Selected Publications

 

Donadini, F., Pesonen, L.J., Korhonen, K., Deutsch, Harlan, S., 2011, Paleomagnetism and paleointensity of the 1.1 Ga old diabase sheets from central Arizona: Geophysica, v. 47(1–2),p.  3–30.

Harlan, S.S., and Morgan, L.A., 2010, Paleomagnetic results from Tertiary volcanic strata and related intrusions, Absaroka Volcanic Supergroup, Yellowstone National Park and vicinity: Contributions to the North American Apparent Polar Wander Path: Tectonophysics, v. 485, p. 245–259, doi:10.1016/j.tecto.2009.12.025.

Dudás, F.O., Ispolatov, V.O., Harlan, S.S., and Snee, L.W., 2010, 40Ar/39Ar Geochronology and geochemical reconnaissance of the Lowland Creek volcanic field, west-central Montana: Journal of Geology, v. 118, p. 295–304.

Geissman, J.W., Holm, D., Harlan, S.S., and Embree, G.F., 2010, Paleomagnetic evidence for rapid, high temperature formation of large-scale rheomorphic structures in the upper Pliocene Huckleberry Ridge Tuff, east-central Idaho: Geology, v. 38, p. 263-266, doi: 10.1130/G30492.1.

Harlan, S.S., and Geissman, J.W., 2009, Paleomagnetism of Tertiary intrusive and volcaniclastic rocks of the Cerrillos Hills and surrounding region, Española basin, New Mexico, U.S.A.: Assessment and implications for vertical-axis rotations associated with extension of the Rio Grande rift: Lithosphere, v. 1, p. 155-173.

Harlan, S.S., Geissman, J.W., Whisner, S.C. and Schmidt, C.J., 2008, Paleomagnetism and geochronology of sills of the Doherty Mountain area, southwestern Montana: Implications for the timing of fold and thrust belt deformation and vertical-axis rotations along the southern margin of the Helena salient: Geological Society of America Bulletin, in press, DOI: 10.1130/B26313.1

Harlan, S.S., Geissman, J.W., and Snee, L.W., 2008, Paleomagnetism of Proterozoic mafic dikes from the Tobacco Root Mountains, southwest Montana: Precambrian Research, v. 113, no. 3-4, p. 239-264.

Kellogg, K.S., and Harlan, S.S., 2007, New 40Ar/39Ar ages and paleomagnetic results bearing on the tectonic and magmatic history of the northern Madison Range and Madison Valley region, southwestern Montana: Rocky Mountain Geology, v. 42, no. 2, p. 157-174.

Meltzer, A., Harlan, S.S., Lerner-Lam, A., Raab, F.J., and Rathje, E., 2007, EarthScope Facility Management Review: National Science Foundation, Arlington, Virginia.  Produced for the National Science Foundation, Directorate for Geosciences, Division of Earth Science, November 14-15, 2007.

Morgan, L.A., Shanks, W.C. III, Pierce, Kenneth, K.L., Lovalvo, D.A., Lee, G.K., Webring, M.W., Stephenson, W.J., Johnson, S.Y., Harlan, S.S., Schulz, B., and Finn, C.A., 2007, The floor of Yellowstone Lake is anything but quiet: New Discoveries from high-resolution sonar imaging, seismic-reflection profiling, and submersible studies: U.S. Geological Survey Professional Paper 1717F, p. 95-126.

Harlan, S.S., 2007, Book Review:  The Earth’s Magnetism: An Introduction for Geologists, by R. Lanza and A. Meloni, Eos, Transactions of the American Geophysical Union, v. 88, no. 10, p. 123-124.

Harlan, S.S., 2006, 40Ar/39Ar dates from the Robinson Anticline Intrusive Complex, Montana: Implications for the timing and duration of alkaline magmatism in the central Montana alkalic province: Rocky Mountain Geology, v. 41, no. 1, p. 45-55. PDF

Du Bray, Harlan, S.S., and Wilson, A.B., 2006, Petrology of the Crazy Mountains dike swarm and geochronology of associated sills, Montana: U.S. Geological Survey Professional Paper 1715, 21. pp. PDF

Harlan, S.S., Premo, W.P., Unruh, D, and Geissman, J.W., 2005, Isotopic Dating of Meso- and Neoproterozoic Mafic Magmatism in the Southern Tobacco Root Mountains, southwestern Montana: Precambrian Research, v. 136, no 3-4, p. 277-289. PDF

Harlan, S.S., Snee, L.W., Mehnert, H., Schmidt, R.G., Sheriff, S., and Irving, A., 2005, 40Ar/39Ar and K-Ar geochronology and tectonic significance of the Late Cretaceous Adel Mountain volcanics and spatially associated Tertiary igneous rocks, northwestern Montana: U.S. Geological Survey Professional Paper 1696, 29 pp. PDF

Petronis, M.S., Hacker, D.B., Holm, D.K., Harlan, S.S., Geissman, J.W., 2004, Anisotropy of magnetic susceptibility and paleomagnetic data bearing on magma emplacement of the Stoddard Mountain laccolith, Iron Axis Magmatic Province, southwest Utah, in Magnetic Fabric: Methods and Applications, F. Martin-Hernandez, C.M. Luneburg, C. Aubourg, and M. Jackson, Geological Society of London, Special Paper 238, p. 251-283.

Geissman, J.W., and Harlan, S.S., 2004, Paleomagnetic and rock magnetic evidence of a secondary yet early magnetization in large sandstone pipes and host late Middle Jurassic (Callovian) Summerville Formation and Bluff Sandstone near Mesita, west-central New Mexico: Journal of Geophysical Research, 109, B07107, doi:10.1029/2003JB002463. PDF

Varga, R.J., Faulds, J.E., Snee, L.W., Harlan, S.S., and Bettison-Varga, 2004, Miocene extension and extensional folding in an anticlinal segment of the Black Mountains accommodation zone, Colorado River extensional corridor, southwestern USA: Tectonics, v. 23, TC1019, doi:10.1029/2002TC001454.  PDF

Harlan, S.S., Heaman, L.W., LeCheminant, A.N., and Premo, W.R., 2003, The Gunbarrel mafic magmatic event: A key 780 Ma time marker for Rodinia plate reconstructions: Geology, v. 13, p. 1053-1056. View Abstract and Color Figures

Morgan, L.A., Shanks, P., Lovalvo, D., Pierce, K., Lee, G., Webring, M., Stephenson, W., Johnson, S., Finn, C., Schulze, B., and Harlan, S., 2003, The floor of Yellowstone Lake is anything but quiet!: Yellowstone Science, v. 11, p. 15-30. PDF

Harlan, S.S., Geissman, J.W., and Premo, W.R., 2003, Paleomagnetism and geochronology of an Early Proterozoic quartz diorite in the southern Wind River Range, Wyoming, USA: Tectonophysics, v. 362, p. 105-122. PDF

Morgan, L.A., Shanks, W.C. III, Lovalvo, D.A., Johnson, S.Y., Stephenson, W.J., Pierce, K.L., Harlan, S.S., Finn, C.A., Lee, G., Webring, M., Schulze, B., Duhn, J., Sweeney, R., and Balisteri, L., 2003, Exploration and discovery in Yellowstone Lake: results from high-resolution sonar imaging, seismic reflection profiling, and submersible studies: Journal of Volcanology and Geothermal Research, v. 122, p. 221-242.

Harlan, S.S., 2002, Book Review: Paleomagnetism: Continents and Oceans, by M.W. McElhinny and P.L. McFadden, EOS, Transactions of the American Geophysical Union, v. 83, no. 20, p. 225.

Hudson, M.R., Harlan, S.S., and Kirkham, R., 2002, Paleomagnetic investigation of the structural deformation and magnetostratigraphy of Neogene basalt flows in western Colorado, in Kirkham R.M., Scott, R.B., and Judkins, T.W., eds., Late Cenozoic evaporate tectonism and volcanism in west-central Colorado: Boulder, Colorado, Geological Society of America Special Paper 366, p. 197-212.

Geissman, J.W. and Harlan, S.S., 2002, Late Paleozoic remagnetization of Precambrian crystalline rocks along the Precambrian/Carboniferous nonconformity, Rocky Mountains: a relationship among deformation, remagnetization, and fluid migration: Earth and Planetary Science Letters, v. 203, p. 905-924.  PDF

Karlstrom, K.E., Åhäll, K-I. Harlan, S.S., Williams, M.L., McClelland, J., and Geissman, J.W., 2001, Long-lived (1.8-0.8 Ga) Cordilleran-type orogen in southern Laurentia, its extensions to Australia and Baltica, and implications for refining Rodinia: Precambrian Research, v. 111, p. 5-30.

Faulds, J.E., Olson, E.L., Harlan, S.S., and McIntosh, W.C., 2002, Miocene extension and fault-related folding in the Highland Range, southern Nevada: A three-dimensional perspective: Journal of Structural Geology, v. 24, p. 861-886.

Wawrzyniec. T.F., Geissman, J.W., Anderson, R.E., Harlan, S.S., and Faulds, J.E., 2001, Paleomagnetic data bearing on style of deformation in the Lake Mead area, southern Nevada: Journal of Structural Geology, v. 23, p. 1255-1279.

Karlstrom, K.E., Harlan, S.S., Williams, M.L., McClelland, J., Geissman, J.W., and Åhäll, K-I, 1999, Refining Rodinia: Geologic evidence for the Australia-western U.S. connection in the Proterozoic: GSA Today, v. 9, no. 10, p. 1-7. PDF

Dudas, F.O., and Harlan, S.S., 1999, An ancient depleted mantle sample from a 42 Ma dike in Montana: Constraints on Persistence of the lithosphere during Eocene magmatism: Journal of Geology, v. 107, p. 287-299.

Olson, E.L., Faulds, J.E., and Harlan, S.S., 1999, Miocene extension and extension-related folding in the Highland Range, southern Nevada: Implications for hydrocarbon exploration, in Faulds, J.E., ed., Cenozoic geology of the northern Colorado River extensional corridor, southern corridor, southern Nevada and northwestern Arizona: Economic implications of regional segmentation structures: Nevada Petroleum Society Guidebook, p. 97-114.

Harlan, S.S., and Geissman, J.W., 1998, Paleomagnetism of the Middle Proterozoic Electra Lake Gabbro, Needle Mountains, southwestern Colorado: Journal of Geophysical Research, v. 103, p. 15497-15507.

Harlan, S.S., Duebendorfer, E.M., and Deibert, J., 1998, New 40Ar/39Ar isotopic dates from Miocene volcanic rocks in the Lake Mead area and southern Las Vegas Range, Nevada: Canadian Journal of Earth Sciences , v. 35, p. 495-503. PDF

du Bray, E.A., and Harlan, S.S., 1998, Geology, age, and tectonic setting of the Cretaceous Sliderock Mountain volcano, Montana: U.S. Geological Survey Professional Paper 1602, 19 pp.

Harlan, S.S., Rosenbaum, J.G., Rutledge, E.M., and Muhs, D., 1999, Sediment magnetic data, thermomagnetic determinations, and geochemical analyses of Holocene and Pleistocene soils and their parent materials from Zanesville, Ohio: Contributions to Quaternary paleoclimate studies of midcontinent loess deposits: U.S. Geological Survey, Open File Report OF 99-516, 29 pp. .DJVU Version

Harlan, S.S., Rosenbaum, J.G., Muhs, D., and Bettis, E.A., III, 1998, Sediment magnetic data from the Elba Cut, Fullerton Canal, Howard County, Nebraska: Contributions to Quaternary paleoclimatic studies of Midcontinent loess deposits: U.S. Geological Survey Open-File Report 98-48, 76 pp. .DJVU Version

Harlan, S.S., Rosenbaum, J.G., Muhs, D., and Bettis, E. A., III, 1998, Sediment magnetic data and thermomagnetic determinations of for modern and ancient soils and parent materials near McCook, Red Willow County, Nebraska: Contributions to Quaternary paleoclimatic studies of midcontinent loess deposits: U.S. Geological Survey Open-File Report 98-46, 36 pp. .DJVU Version

Harlan, S.S., Rosenbaum, J.G., Muhs, D., and Bettis, EA., III, 1998, Sediment magnetic data and thermomagnetic determinations of Holocene and Pleistocene soils and their parent materials from Bellevue, Scarpy County, Nebraska: Contributions to Quaternary paleoclimate studies of midcontinent loess deposits: U.S. Geological Survey Open-File Report 98-47, 54 pp. .DJVU Version

Harlan, S.S., Geissman, J.W., and Snee, L.W., 1997, Paleomagnetic and 40Ar/39Ar geochronologic data from Late Proterozoic mafic dikes and sills, Montana and Wyoming:  U.S. Geological Survey Professional Paper 1580, 16 pp. Web Version PDF Version

Harlan, S.S., Geissman, J.W., Snee, L.W., and Reynolds, R.L., 1996, Late Cretaceous remagnetization of Proterozoic mafic dikes, southern Highland Range, southwestern Montana: A paleomagnetic and 40Ar/39Ar study: Geological Society of America Bulletin, v. 108, p. 653-668.

Harlan, S.S., 1996, Timing of emplacement of the sapphire-bearing Yogo dike, Little Belt Mountains, Montana: Economic Geology, v. 91, 1159-1162. PDF

Harlan, S.S., Snee, L.W., Geissman, J.W., 1996, 40Ar/39Ar geochronology and paleomagnetism of Independence volcano, Absaroka Volcanic Supergroup, Beartooth Mountains, Montana:  Canadian Journal of Earth Sciences, v. 33, p. 1648-1654.

du Bray, E.A., and Harlan, S.S., 1996, The Eocene Big Timber stock, south-central Montana: Development of extensive compositional variation in an arc-related intrusion by side-wall crystallization and cumulate glomerocryst remixing:  Geological Society of America Bulletin, v. 108, no. 11, p.1404-1424.

Harlan, S.S., Geissman, J.W., C.D. Henry, T. Onstott, 1995, Paleomagnetism and 40Ar/39Ar geochronology of gabbro sills at Mariscal Mountain anticline, southern Big Bend National Park, Texas;  Implications for the timing of Laramide tectonism and vertical axis rotations in the southern Cordilleran Orogenic Belt:  Tectonics, v. 14, p. 307-321.

Park, J.K., Buchan, K.L., and Harlan, S., 1994, A proposed giant radiating dyke swarm fragmented by the separation of Laurentia and Australia based on paleomagnetism of ca. 780 Ma mafic intrusions in western North America: Earth and Planetary Science Letters, v. 132, p. 129-139.

Harlan, S.S., Snee, L.W., Geissman, J.W., and Brearley, A., 1994, Paleomagnetism of the Middle Proterozoic Laramie Anorthosite Complex and the Sherman Granite, southern Laramie Range, Wyoming and Colorado: Journal of Geophysical Research, v. 99, p. 17997-18020.

Kellogg, K.S., Harlan, S.S., Mehnert, H.H., Snee, L.W., Pierce, K.L., Hackett, W.R., and Rodgers, D.W., 1994, Age and stratigraphic relations of the Arbon Valley tuff, eastern Snake River Plain, Idaho:  U.S. Geological Survey Bulletin 2091, 18pp.

Harlan, S.S., 1993, Paleomagnetism of Middle Proterozoic diabase sheets from central Arizona:  Canadian Journal of Earth Sciences, v. 30, p. 1415-1426.

Schmidt, C.J., Evans, J.P., Harlan, S.S., Batatian, D., Derr, D., Malizzi, L., McDowell, R., Nelson, J., Parke, M., and Weberg, E., 1993, Mechanical behavior of basement rocks during movement of the Scarface thrust, central Madison Range, Montana, in Schmidt, C.J., Chase, R.B., and Erslev, E. eds., Laramide Basement Deformation in the Rocky Mountain Foreland of the Western United States:  Geological Society of America Special Paper 280, p. 89-105. 

Evans, J. P., Dubois, M.A., Batatian, D., Harlan, S.S., Derr, D., Malizzi, L., McDowell, R., Nelson, J., Parke, M., Schmidt, C.J., and Weberg, E., 1993, Deformation mechanisms and kinematics of a Precambrian-cored fold and fault structure:  Jakeys Fork structure, northeastern Wind River Range, Wyoming,  in Schmidt, C.J., Chase, R.B., and Erslev, E. eds., Laramide Basement Deformation in the Rocky Mountain Foreland of the Western United States:  Geological Society of America Special Paper 280, p. 163-176.

Geissman, J.W., Jackson, M.J., Harlan, S.S., and Van der Voo, 1991, Paleomagnetic results from Cambro-Ordovician metaigneous contact rocks, Florida Mountains, SW New Mexico:  Journal of Geophysical Research, v. 96, p. 6053-6068.

Harlan, S.S., Geissman, J.W., Lageson, D.R., and Snee, L.W., 1988, Paleomagnetic and isotopic dating of thrust belt deformation along the eastern edge of the Helena salient, northern Crazy Mountains, Montana: Geological Society of America Bulletin, v. 100, p. 492-499.

Geissman, J.W., Brown, L., Turrin, B., McFadden, L.D., and Harlan, S., 1990, Brunhes chron excursion/polarity episode recorded during the late Pleistocene, Albuquerque Volcanoes, New Mexico, USA:  Geophysical Journal International, v. 102, p. 73-88.

Geissman, J.W., Harlan, S.S., and Brearley, A., 1988, The physical isolation of carriers of geologically stable remanent magnetization:  paleomagnetic and rock magnetic microanalysis and electron microscopy:  Geophysical Research Letters, v. 15, p. 479-482.

Geissman, J.W., Harlan, S.S., Brown, L., Turrin, B., and McFadden, L.D., 1989, Brunhes chron geomagnetic excursion during the latest Pleistocene, Albuquerque volcanoes, New Mexico, U.S.A., in Geomagnetism and Palaeomagnetism, F.J. Lowes, D.W. Collinson,, J.H. Parry, S.K., Runcorn, D.C. Tozer, and A. Soward, editors.  Kluwer Academic Publishers, Norwell, Mass.  NATO Geomagnetism and Paleomagnetism Advanced Studies Institute, p. 123-136.

 

Web-based Contributions

 

Harlan, S.S., Mafic dikes of the Beartooth Mountains, Montana and Wyoming: Road Log Supplement, NSF Teaching Petrology in the 21st Century Workshop, Bozeman, MT, July 8-16, 2003 (http://serc.carleton.edu/files/NAGTWorkshops/petrology03/Mafic_dykes.doc; see also http://mason.gmu.edu/~sharlan/mafic_dikes_beartooth_mountains.htm).

 

Conference Abstracts

 

Harlan, S. S., Geissman, J. W., Snee, L. W., 2010, Paleomagnetism of Proterozoic Mafic Dikes of the South Pass Area, Southern Wind River Mountains, Wyoming: American Geophysical Union, American Geophysical Union, Fall Meeting 2010, abstract #GP33C-0955.

Harlan, S.S., Geissman, J.W., and Snee, L.W., 2010, Paleomagnetism of Proterozoic mafic dikes, southern Wind River Mountains, Wyoming: Geological Society of American Abstracts with Programs, v. 42, No. 5, p. 262.

Harlan, S.S., and Morgan, L.A., 2007, Paleomagnetism and rock magnetic results from Quaternary lavas and tuffs of the Yellowstone Plateau Volcanic Field: Geological Society of America Abstracts with Programs, v. 39, No. 6, p. 469.

Harlan, S.S., and Morgan, L.A., 2006, Paleomagnetic and rock magnetic properties of Tertiary volcanic and intrusive rocks of the Eocene Absaroka Volcanic Supergroup, northeastern Yellowstone Park: Geological Society of America Abstracts with Programs, Vol. 38, No. 7, p. 352.

Harlan, S.S., and Morgan, L.A., 2007, Paleomagnetism and rock magnetic results from Quaternary lavas and tuffs of the Yellowstone Plateau Volcanic Field: submitted to 2007 Annual Meeting of the Geological Society of America, Denver Colorado, in press.

Harlan, S.S., and Morgan, L.A., 2006, Paleomagnetic and rock magnetic properties of Tertiary volcanic and intrusive rocks of the Eocene Absaroka Volcanic Supergroup, northeastern Yellowstone Park: Geological Society of America Abstracts with Programs, Vol. 38, No. 7, p. 352.

Geissman, J.W., Holm, D., and Harlan, S.S., 2006, Paleomagnetic and anisotropy of magnetic susceptibility (AMS) documentation of the formation of large-scale rheomorphic structures in the 2.06 Ma Huckleberry Ridge Tuff, eastern Idaho: Eos, Transactions of the American Geophysical Union, v. 87(52), Fall Meeting Supplement, Abstract GP11A-0062.

Harlan, S.S., 2005, The Paleoproterozoic leopard dikes of the Wyoming Craton: A dismembered fragment of the 2.45 Ga Hearst-Matachewan giant radiating dike swarm of the Superior Craton?: Geological Society of America Abstracts with Programs, Vol. 37, No. 7, p. 505. Abstract and Poster Handout.

Harlan, S.S., Weese, A., Geissman, J.W. Snee, L.W., Sauer, R., 2005, Paleomagnetic and 40Ar/39Ar geochronology of Tertiary intrusions in the Espanola Basin, New Mexico: Further evidence for vertical-axis block rotations in the Rio Grande Rift: Eos Trans. AGU, 86(52), Fall Meet. Suppl., Abstract GP33A-0087.

Pesonen, L.J., Korhonen, K., Deutsch, A., Fabio, D., Harlan, S., Nevanlinna, H., 2005, Reversal asymmetry in the paleomagnetic data at 1.1 Ga;--new results from SW Arizona sills: Eos Trans. AGU, 86(52), Fall Meet. Suppl., Abstract GP33A-0089.

Harlan, S.S., 2005, New 40Ar/39Ar dates from alkaline intrusions in the northern Crazy Mountains, Montana: Implications for the timing and duration of alkaline magmatism in the Central Montana Alkalic Province: EarthScope in the Rocky Mountains Meeting Poster Session Website: http://serc.carleton.edu/earthscoperockies/volabstracts.html.

Harlan, S.S., Premo, W.R., Unruh, D.M., Snee, L.W., and Geissman, J.W., 2005, Geochronological evidence for Meso- and Neoproterozoic mafic magmatism along the western margin of the Wyoming craton: EarthScope in the Rocky Mountains Meeting Poster Session Website: http://serc.carleton.edu/earthscoperockies/volabstracts.html.

Harlan, S.S., Geissman, J.W., Whisner, S.C., and Schmidt, C.J., 2005, Paleomagnetism and 40Ar/39Ar dating of folded sills in the Lombard Thrust Sheet, south central Montana: Implications for the timing and fold and thrust belt deformation and vertical axis rotations along the southern margin of the Helena Salient: EarthScope in the Rocky Mountains Meeting Poster Session Website: http://serc.carleton.edu/earthscoperockies/volabstracts.html.

Donadini F., Pesonen L.J., Korhonen K., Harlan S. & Deutsch A., 2005, New paleomagnetic, petrophysical and paleointensity results from the Gila County diabases, Central Arizona: Fifth International Dyke Conference IDC5 Abstract Volume, “Dyke swarms - time markers of crustal evolution”, Rovaniemi , Finland.

Pesonen, L.J., Korhonen, K., Deutsch, A., Fabio, D., Harlan, S., Nevanlinna, H., 2005, Reversal asymmetry in the paleomagnetic data at 1.1 Ga—new results from SW Arizona sills: Eos, Transactions of the American Geophysical Union, v. 86(52), Fall Meeting Supplement, Abstract GP33A-0089.

Pesonen, L.J., Korhonen, Deutsch, A., Donadini, Harlan, S., and Nevanlinna, H., New paleomagnetic data of 1.1 Ga diabases of Arizona – Implications to the assembly of Rodinia: submitted to Supercontinents and Earth Evolution Symposium 2005, Fremantle, Australia.

Harlan, S.S., 2005, 40Ar/39Ar dates from alkaline intrusions of the northern Crazy Mountains, south-central Montana: EOS, Transactions of the American Geophysical Union, AGU 86(18), Joint Assembly Supplement, Abstract T43D-02.

Harlan, S.S. and Geissman, J.W., 2004, Paleomagnetism of Tertiary intrusive and volcanic rocks from the Cerrillos Hills, New Mexico: Evidence for crustal block rotation in the Rio Grande Rift: Geological Society of America Abstracts with Programs, v. 36, no. 5, p. 435.

Harlan, S.S., Premo, W.P., Unruh, D., Snee, LW., and Geissman, J.W., 2004, Geochronologic evidence for Meso- and Neoproterozoic Mafic Magmatism along the western margin of the Wyoming craton: Geological Society of America Abstracts with Programs, v. 36, p. 5, p. 508.

Robinson, D., Kalakay, T., Williams, M., Mogk, D., Harlan, S., Hubbard, M., Reese, J., Hogan, J., Trupe, C., Badger, R., 2004, On the cutting edge: Integrating structural geology, petrology, tectonics and geochronology to solve geologic problems: Geological Society of America Abstracts with Programs, v. 36, no. 5, p. 427.

Harlan, S.S., Heaman, L., LeCheminant, A.N., and Premo, W.R., 2003, The 780 Ma Gunbarrel Magmatic Event: U-Pb documentation of widespread mafic magmatism along the Neoproterozoic western margin of Laurentia: American Geophysical Union Fall Meeting Supplement, Abstract V31E-0972.

Harlan, S.S., Snee, L.W., Vielreicher, Richard M., Goldfarb, R.G., Mortensen, J., Bradley, D.C, 2003, Age and cooling history of gold deposits and host rocks in the Willow Creek Mining District, Talkeetna Mountains, south-central Alaska: Geological Society of America Abstracts with Programs, Abstract 94-10.

Harlan, S.S., Heaman, L., LeCheminant, A.N., and Premo, W.R., 2003, The Gunbarrel mafic magmatic event: A key 780 time marker for Rodinia plate reconstructions: Geological Society of America Abstracts with Programs, Abstract 206-2.

Petronis, M.S., Hacker, D.B., Holm, D.K., Harlan, S.S., Geissman, J.W., 2003, Anisotropy of magnetic susceptibility and paleomagnetic data bearing on magma emplacement of the Stoddard Mountain laccolith, Iron Axis Magmatic Province, southwest Utah: Geological Society of America Abstracts with Programs, Abstract 132-7.

Donadini, F., Pesonen, L.J., and Harlan, S., 2003, Preliminary Thellier-paleointensity measurements on Precambrian rocks: Geophysical Research Abstracts, v. 5, 00560, European Geophysical Society.

Harlan, S.S., Geissman, J.W., Whisner, S.C., Schmidt, C.J., 2002, Paleomagnetism and 40Ar/39Ar dating of folded sills in the Lombard thrust sheet, south central Montana: Implications for the timing of fold and thrust belt deformation and vertical axis rotations along the southern margin of the Helena salient: EOS, Transactions of the American Geophysical Union, Abstract GP72B-1008.

Harlan, S.S., Geissman, J.W., and Premo, W., 2000, Preliminary paleomagnetic and geochronologic results from an Early Proterozoic mafic dike in the southern Wind River Mountains, Wyoming: Geological Society of America Abstracts with Programs, v. 32, no. 7, p. A-453.

Geissman, J.W., and Harlan, S.S., 2000, Testing an association between remagnetization and orogeny: the effect of ancestral Rocky Mountain deformation on the paleomagnetism of Paleozoic and Precambrian rocks in the western Cordillera: Geological Society of America Abstracts with Programs, v. 32, no. 7, p. A-465.

Karlstrom, K.E., Ahall, K.-I., Williams, M.L., McClelland, J., Harlan, S.S., and Geissman, J.W., 2000, Long-lived (1.8 to 1.0 Ga) convergent orogen in southeastern Laurentia: its extension to Australia and Baltica and implications for refining Rodinia: Geological Society of America Abstracts with Programs, v. 32, no. 7, p. A-317

Schmidt, C.J., Whisner, C.J., Harlan, S.S., and Geissman, J.W., 2000, Paleomagnetic and geochronologic dates bearing on the timing of fold and thrust belt deformation in the Lombard thrust sheet along the southern margin of the Helena salient, south central Montana: Geological Society of America Abstracts with Programs, v. 32, no. 7, p. A-170.

Harlan, S. S., Rosenbaum, J. G., Reynolds, Rich L., Muhs, Dan, Bettis, E. A., III, 1999, Enhancement of anhysteretic remanent magnetism in modern soils from the North American Midcontinent; Implications for paleoclimatic reconstructions: Modreski, Peter J. (compiler) (U. S. Geological Survey, Denver, CO, United States), Abstracts of the 11th annual U. S. Geological Survey, central region, 1999 poster review, Open-File Report , OF 99-0321, p. 11.

Shanks, W.C. Morgan, L.A., Johnson, K.M., Lovalvo, D., Johnson, S.Y., Stephenson, W.J., Harlan, S.S., White, E.A., Waples, J., Val Klump, J., 1999, The floor of Yellowstone Lake is anything but quiet; New discoveries from sonar imaging, seismic reflection and magnetic surveys: EOS, Transactions of the American Geophysical Union, v. 80, F1162.

Pesonen, L.J., and Harlan, S.S., 1999, The apparent Middle Proterozoic reversal asymmetry-A test of the non-dipole model: The Royal Society Conference of Geomagnetic Reversals and Long Term Secular Variation, July 6-7, 1999, London.

Geissman, J.W., Burchfiel, B.C., Liangzhong, C., Harlan, S., and Wawrzyniec. T., 1999, Paleomagnetic data from Upper Jurassic to lower Tertiary redbeds, western Yunnan, PRC: Testing spatial variability in large-magnitude intracontinental deformation: Geological Society of America Abstracts with Programs, v. A-370, p. 159.

ISLE (Integrated Studies of Lake Ecosystems: A cooperative of the U.S. Geological Survey, Eastern Oceanics, and Greater Lakes WATER Institute—University of Wisconsin-Milwaukee), 1999, New discoveries from the floor of Yellowstone Lake: Results from sonar imaging, seismic reflection, and magnetic surveys: Geological Society of America Abstracts with Programs, v. A-370, p. 207. (Individual authors not listed.)

Harlan, S.S., Rosenbaum, J.G., Reynolds, R.E., Muhs, D., and Bettis, E.A., 1998, Enhancement of anhysteretic remanent magnetization in modern soils from the North American midcontinent—implications for paleoclimatic reconstructions: Eos, Transactions of the American Geophysical Union, Fall Meeting Supplement, v. 79, no. 45, p. F238.

Geissman, J., Burchfiel, B.C., Liangzhong, C., Harlan, S., 1998, Paleomagnetic data from Cretaceous redbeds in western Yunnan, PRC: Evaluation of spatial variability in large-magnitude intracontinental deformation: Eos, Transactions of the American Geophysical Union, Fall Meeting Supplement, v. 79, no. 45, p. F223.

Varga, R. J., Bettison-Varga, L., Haverkamp, F., Murrey, R., Spring, S., Wilds, N., Harlan, S., Snee, L., 1998, Tertiary extensional and magmatic development of the Grasshopper  Junction segment of the Black Mtns. accommodation zone, W. Arizona: Geological Society of America Abstracts with Programs, v. 30, no. 7, p. 241.

Rosenbaum, J.G., Reynolds, R.L., Muhs, D., Harlan, S.S., and Beget, J.E., 1998, Pedogenic origin of magnetic property variations in loess/paleosol sequences in central Alaska (Invited): International Symposium and Field Workshop on Paleosols and Climatic Change, Lanzhou University, Peoples Republic of China.

Rosenbaum, J.R., Reynolds, R.L., Muhs, D., Harlan, S.S., and Beget, J.E., 1997, Geochemical constraint on the interpretation of magnetic property variations in loess/paleosol sequences from central Alaska: submitted to Fall 1997 AGU meeting, San Francisco, CA.

Harlan, S.S., Schmidt, C.J., and Geissman, J.W., Nature and timing of recurrent movement on NW-trending faults in SW Montana: Middle Proterozoic to Neogene history: Geological Society of America Abstracts with Programs, 1996 Annual Meeting, v. 28, no. 7, p.  A-509.

Dudas, F.O. and Harlan, S.S., Geochemistry and age of the Haymond School dike, south central Montana: Geological Society of America Abstracts with Programs, 1996 Annual Meeting, v. 28, no. 7, p.  A-481.

Isoplatov, V.O., Dudas, F.O., Snee, L.W., and Harlan, S.S., Precise dating of the Lowland Creek Volcanics, west-central Montana: Geological Society of America Abstracts with Programs, 1996 Annual Meeting, v. 28, no. 7, p.  A-484.

Geissman, J.W., and Harlan, S.S., Paleomagnetism of the Proterozoic LaBonte gabbro and associated rocks, northeast Laramie Range, Wyoming: submitted to the 1996 AGU fall meeting, San Francisco, CA.

Varga, R.J., Faulds, J.E., and Harlan, S.S., Regional extent and dominant geometry of the Black Mountains accommodation zone, northwest Arizona and southern Nevada: Geological Society of America Abstracts with Programs, 1996 Annual Meeting, v. 28, no. 7, p.  A-512.

Harlan , S. S., and Snee, L.W., 1996, 40Ar/39Ar and Paleomagnetic results from Independence Volcano: No evidence for Late Cretaceous volcanism in rocks of the Absaroka Volcanic Supergroup: Eos, Transactions of the American Geophysical Union, Spring Meeting Supplement, v. 77, no. 17, p. S278.

Harlan, S.S. and Geissman, J.W., 1995, Preliminary paleomagnetic results from the Middle Proterozoic Electra Lake Gabbro, Southwestern Colorado: Eos, Transactions of the American Geophysical Union, Fall Meeting Supplement, v. 76, no. 46, p. F177-178.

Harlan, S.S., Geissman, J.W., Snee, L.W., and Reynolds, R., 1995, Late Cretaceous remagnetization of Proterozoic mafic dikes, southern Highland Mountains, southwestern Montana: a paleomagnetic and 40Ar/39Ar study:  International Union of Geodesy and  Geophysics, XXI General Assembly Abstracts, p. B118.

Geissman, J.W., Harlan, S.S., Molina Garza, R., and Feig, T., 1995, Late Paleozoic remagnetization of Proterozoic basement rocks in Colorado and Wyoming: International Union of Geodesy and  Geophysics, XXI General Assembly Abstracts, p. B118 (Invited abstract).

Park, J.K., Buchan, K.L., and Harlan, S.S., 1995, Proposed Giant Radiating Dike Swarm Fragmented by the Separation of Laurentia and Australia -- Based on Paleomagnetism of ca. 780 Ma Mafic Intrusions in Western North America, Geological Association of Canada - Mineralogical Association of Canada Annual Meeting Final Program and Abstracts, p. A-80.

Smith, M., Lageson, D., Heatherington, A., and Harlan, S., 1995, Geochronology, geochemistry, and isotopic systematics of the basalt of Hepburns Mesa, Yellowstone River Valley, Montana: Geological Society of America Abstracts with Programs, v. 27, no. 4, p. 56.

Feig, A.D., Geissman, J.W., Harlan, S.S., and Molina-Garza, R., 1994, Paleomagnetism of the Middle Proterozoic Pikes Peak Batholith, central Front Range of Colorado:  Eos, Transactions of the American Geophysical Union, Supplement, v. 75, no. 44, p. 199.

Buchan, K.L., Park, J.K., Harlan, S.S., Mortensen, J.K., Emslie, R.F., Roddick, J.C., Card, K.D., and Hodych, J.P., 1994, Testing the integrity of subregions of Laurentia in the Proterozoic with paleomagnetism and high-precision dating:  submitted to Geological Survey of Canada 1994 Forum, Ottawa, Ontario.

Taylor, C., Philpotts, J., Sutley, S., Harlan, S., Gent, C., Premo, W., Emsbo, P., and Meir, A., The geochemistry of late Triassic volcanic rocks and age of VMS occurrences along the eastern margin of the Alexander Terrane, submitted to Symposium on the geology and ore deposits of the American Cordillera, Geological Society of Nevada and U.S. Geological Survey, Reno Nevada 1995.

Harlan, S.S., Snee, L.W., and Reynolds, R., 1993, Late Cretaceous remagnetization of Proterozoic mafic dikes, southern Highland Mountains, Montana:  A paleomagnetic and 40Ar/39Ar study:  Eos, Transactions of the American Geophysical Union, v. 74, p. 211.

Harlan, S.S., 1993, New Paleomagnetic results from Middle and Late Proterozoic intrusive rocks of the central and southern Rocky Mountains:  Geological Society of America Abstracts with Programs, v. 25, no. 5, p. 48. 

du Bray, E.A., and Harlan, S.S., 1993, Geology and preliminary 40Ar/39Ar geochronology of Sliderock Mountain volcano, south-central Montana:  Geological Society of America Abstracts with Programs, v. 25, no. 5, p. 48.

Rigby, J.K. Jr., Snee, L.W., Unruh, D., Harlan, S.S., Guan, J., Li, F., Rigby, J.K. Sr., and Kowalis, B.J., 1993, 40Ar/39Ar and U-Pb dates for dinosaur extinction, Nanxiong Basin, Guongdong Province, Peoples Republic of China:  Geological Society of America Abstracts with Programs, v. 25, no. 6, p. A-296.

O'neill, M.J., and Harlan, S.S., 1992, Montana has an early Proterozoic history:  Geological Society of America Abstracts with Programs, v. 24, no. 6, p. 56.

Harlan, S.S., Snee, L.W., Mehnert, H.H., Sheriff, S., and Schmidt, R.G., 1991, New 40Ar/39Ar isotopic ages from the Adel Mountain volcanics:  Implications for the relationship between deformation and magmatism in the Montana Disturbed Belt, western Montana:  Geological Society of America Abstracts with Programs, v. 23, p. A136.

Harlan, S.S., Mehnert, H.H., Snee, L.W., and Meen, J.K., 1991, Preliminary isotopic (K-Ar and 40Ar/39Ar) age determinations from selected Late Cretaceous and Tertiary igneous rocks in Montana:  Montana Bureau of Mines and Geology Special Publication 100, p. 136-137.

Kellogg, K.S., and Harlan, S.S., 1991, Style and timing of Laramide deformation of the northwestern Madison Range, southwestern Montana:  Geological Society of America Abstracts with Programs, v. 23, p. 38.

Harlan, S.S., Snee, L.W., and Geissman, L.W., 1990, Paleomagnetic and 40Ar/39Ar results from mafic dikes and basement rocks, southwest Montana:  Eos, Transactions of the American Geophysical Union, v. 71, p. 1297.

Geissman, J.W., and Harlan, S.S., 1990, Paleomagnetism and rock magnetism of large sandstone pipes in the Beclabito member of the Wanakah Formation (formerly Summerville Formation, Middle Jurassic) near Mesita, central New Mexico:  Eos, Transactions of the American Geophysical Union, v. 17, p. 1298.

Harlan, S.S., Batatian, D., Evans, J., Derr, D., Malizzi, L., McDowell, R., Nelson, G., Parke, M., Schmidt, C., and Weberg, E., 1990, Mechanical behavior of footwall basement rocks, Scarface thrust, central Madison Range, Montana:  Geological Society of America Abstracts with Programs, v. 22, no. 6, p. 13.

Evans, J.P., Batatian, D., Derr, D., Dubois, M., Harlan, S., Malizzi, L., McDowell, R., Nelson, G., Parke, M., Schmidt, C., and Weberg, E., 1990, Mechanisms and kinematics of a Precambrian-cored fold and fault structure:  Jakeys Fork, Wyoming:  Geological Society of America Abstracts with Programs, v. 22, no. 6, p. 10.

Weberg, E., Batatian, D., Derr, D., Evans, J., Genovese, P., Harlan, S.S., Malizzi, L., McDowell, R., Parke, M., and Schmidt, C., 1990, Footwall deformation below the Scarface thrust, Madison Range, southwestern Montana:  Geological Society of America Abstracts with Programs, v. 22, no. 6, p. 49-50.

Geissman, J.W., Jackson, M., Harlan, S.S., and Van der Voo, R., 1990, Paleomagnetic results from Cambro-Ordovician metaigneous contact rocks, Florida Mountains, SW New Mexico:  Eos, Transactions of the American Geophysical Union, v. 71, p. 487-488.

Harlan, S.S., Geissman, J.W., Snee, L.W., and Schmidt, C.J., 1989, Paleomagnetism of Proterozoic mafic dikes, southwest Montana foreland, USA:  Continental Magmatism Abstracts, IAVCEI, New Mexico Bureau of Mines and Geology Bulletin 131, p. 121.

Harlan, S.S., and Geissman, J.W., 1989, Late Paleozoic remagnetization of Proterozoic crystalline rocks, Colorado Front Range, Colorado:  Eos, Transactions of the American Geophysical Union, v. 70, p. 311.

Geissman, J.W., Harlan, S.S., and Snee, L.W., 1989, The age of primary magnetization of the Stillwater Complex, and the coherence of Arching cratons of Laurentia:  Eos, Transactions of the American Geophysical Union, v. 70, p. 1064.

Geissman, J.W., Harlan, S.S., and Snee, L.W., 1989, The primary age of the Stillwater Complex, Montana, and its significance for the coherence of Archean cratons of Interior Laurentia:  Geological Society of America Abstracts with Programs, v. 21, p. A279.

Hale, C.J., Kellman, L., Geissman, J.W., and Harlan, S.S., 1988, Thellier paleointensity results from the Stillwater Complex and Laramie Anorthosite Complex, Wyoming:  Eos, Transactions of the American Geophysical Union, v. 69, p. 1157.

Harlan, S.S., and Geissman, J.W., 1988, Preliminary paleomagnetic data from Proterozoic mafic dikes, southern Tobacco Root Mountains:  Eos, Transactions of the American Geophysical Union, v. 69, p. 1157.

Harlan, S.S., Geissman, J.W., Mawer, C.K., and Brearley, A., 1988, Paleomagnetic and STEM results from the Proterozoic Laramie anorthosite complex and Sherman Granite:  Eos, Transactions of the American Geophysical Union, v. 69, p. 339.

Geissman, J.W., Harlan, S.S., Eichelberger, J.C., and McCabe, C., 1988, The rock magnetic record of silicic magma emplacement, Inyo Domes, California:  Geological Society of America Abstracts with Programs, v. 20, p. A350.

Geissman, J.W., and Harlan, S.S., 1988, Precambrian paleomagnetism of the central and western United States:  Critical fragments of an APW path and implications for Proterozoic tectonics:  Geological Society of America Abstracts with Programs, v. 20, p. A350.

Harlan, S.S., and Geissman, J.W., 1987, Preliminary paleomagnetic results from the mid-Cretaceous (?) pluton of Indian Springs, Cima volcanic field, eastern Mojave Desert, California:  Eos, Transactions of the American Geophysical Union, v. 68, p. 1253.

Harlan, S.S., Geissman, J.W., Price, J.G., Henry, C.D., Onstott, T.C., and Oldow, J.S., 1987, Paleomagnetic documentation of the cessation of Chihuahuan fold thrust deformation, SW Texas:  Geological Society of America Abstracts with Programs, v. 19, p. 693.

Geissman, J.W., Harlan, S.S., Saxton, J., and Cavanaugh, M., 1987, Late Archean to early Middle Proterozoic paleomagnetism of the central and western U.S.:  New data, assessment of earlier results, and implications for Proterozoic tectonics:  Geological Society of America Abstracts with Programs, v. 19, p. 674.

Geissman, J.W., Harlan, S.S., and Iseri, D., 1987, Paleomagnetic and rock magnetic microanalysis in combination with microbeam techniques to physically isolate and identify carriers of geologically stable RM:  IUGG Abstracts, 1987, Vancouver, British Columbia.

Harlan, S.S., and Geissman, J.W., 1986, Paleomagnetism of Proterozoic mafic dikes in the southern Wind River Range, Wyoming:  A reinvestigation:  Eos, Transactions of the American Geophysical Union, v. 67, p. 928. 

Bell, M.J., Geissman, J.W., and Harlan, S.S., 1986, Tectonic implications of paleomagnetic data from mid-Cretaceous plutons, Excelsior Mountains, Nevada:  Eos, Transactions of the American Geophysical Union, v. 66, p. 928.

Geissman, J.W., and Harlan, S.S., 1986, Stillwater Complex (Montana) paleomagnetism:  Results from banded series units and younger intrusions:  Eos, Transactions of the American Geophysical Union, v. 66, p. 876.

Harlan, S.S., Geissman, J.W., and Lageson, D.R., 1985, Paleomagnetic dating of thrust belt deformation along the eastern margin of the Disturbed Belt, northern Crazy Mountains Basin, Montana:  Eos, Transactions of the American Geophysical Union, v. 66, p. 876.

Harlan, S.S., and Geissman, J.W., 1985, Timing of deformation along the eastern margin of the Disturbed Belt, northern Crazy Mountains, Montana:  1985 Tobacco Root Geological Society Meeting Abstract Volume, Bozeman, MT.