Michael Cosca

Michael Cosca is a research geologist with the U.S. Geological Survey, who combines ⁴⁰Ar/³⁹Ar geochronology with mineralogy, petrology, and field geology to understand igneous, metamorphic, and tectonic processes at the regional, local, and sub-grain scale.  Mike received his undergraduate degree in geology from the University of California, Berkeley (1981) and M.Sc. (1985) and Ph.D. (1989) in geology from the University of Michigan, Ann Arbor.  After completing his Ph.D., he moved to Switzerland and for nearly 19 years conducted scientific research at the University of Lausanne (http://www.unil.ch/gse/home.html).   During this time he constructed a ⁴⁰Ar/³⁹Ar research laboratory and obtained research funding that supported 4 Ph.D. students, 2 M.Sc. students and 2 post-doctoral scholars and worked closely with colleagues from Lausanne.  This research was funded primarily with grants he obtained from the Swiss National Science Foundation (http://www.snf.ch/en/Pages/default.aspx) with additional support from the University of Lausanne. 

Mike joined the U.S Geological Survey in 2008 and supervises the ⁴⁰Ar/³⁹Ar geochronology laboratory in Denver.  His research is broadly focused on understanding the geochronology of ore deposits, mountain building, volcanic stratigraphy, landscape formation, near-surface faulting, physical and chemical controls of argon distribution in minerals and rocks, and developing novel methods for ⁴⁰Ar/³⁹Ar analysis.  Much of his research involves collaborations with USGS scientists from the Geology, Geophysics, and Geochemistry Science Center and the Geosciences and Environmental Change Science Center.  Current research projects include the Cenozoic landscape evolution of the Southern Rocky Mountains, igneous activity related to mineralization in the Basin and Range province, and the timing of fluid flow and mineralization in the Proterozoic mid continent rift of North America.

Publications

Cosca, M.A., and Chaffee, M.A., 1983, Geochemical analyses of rock, stream-sediment, and panned-concentrate samples from the Laurel-McGee and Wheeler Ridge Roadless Areas, Inyo and Mono Counties, California:  U.S. Geological Survey Open-file Report 83-3, 107 p.

Cosca, M.A., Chaffee, M.A., and Capstick, D.O., 1983, Mineral resource potential map of the Wheeler Ridge Roadless Area, Inyo and Mono Counties, California:  U.S. Geological Survey Miscellaneous Field Studies Map, MF-1411B.

Cosca, M.A., Chaffee, M.A., and Johnson, R., 1983,  Mineral resource potential map of the Laurel-McGee Roadless Area, Mono County, California: U.S. Geological Survey Miscellaneous Field Studies Map, MF-1411C. 

Cosca, M.A., and Capstick, D.O., 1983, Laurel-McGee and Wheeler Ridge Roadless Areas, California, In: Wilderness mineral potential: Assessment of mineral resource potential in US Forest Service Lands: U.S. Geological Survey Professional Paper 1300, Marsh, S.P. and Dickinson, R.G. (eds.), p. 281-283.

Cosca, M.A., and Peacor, D.R., 1987, Chemistry and structure of esseneite (CaFe3+AlSiO6), a new pyroxene produced by pyrometamorphism:  American Mineralogist 72, pp. 148-156.

Yau, Y.C., Peacor, D.R., Essene, E.J., Lee, J.H., Kuo, L.C., and Cosca, M.A., 1987, Hydrothermal experiments on candidate packing materials.  Clays and Clay Mineralalogy,  v. 35, p. 241-250.

Cosca, M.A., Rouse, R.C., and Essene, E.J., 1988, Dorrite (Ca2(Mg2 Fe3+4)(Al4Si2)O20), a new member of the aenigmatite group from a pyrometamorphic melt-rock.  American Mineralogist, v. 73, p. 1440-1449.

Cosca, M.A., Essene, E.J., Geissman, J.G., Simmons, W.B., and Coates, D.A., 1989, Pyrometamorphic rocks associated with naturally burned coal beds, Powder River Basin, Wyoming.  American Mineralogist, v. 74, p. 85-100.

Cosca, M.A., 1989, Cooling and inferred uplift history of the Grenville Orogen, Ontaria: constraints from ⁴⁰Ar/³⁹Ar thermochronology: PhD thesis University of Michigan, 235 pp.

Cosca, M.A., Sutter, J.F., and Essene, E.J., 1990, Comment on "Interpretation of K/Ar mineral dates from the Grenville Orogenic Belt."  American Journal of Science, v. 290, p. 202-204.

Cosca, M.A., Sutter, J.F., and Essene, E.J., 1991, Cooling and inferred uplift/erosion history of the Grenville Orogen, Ontario: constraints from ⁴⁰Ar/³⁹Ar thermochronology.  Tectonics, v. 10,  p. 959-977.

Cosca, M.A., Essene, E.J., and Bowman, J.R., 1991, Complete chemical analyses of metamorphic hornblendes: implications for normalizations, calculated H2O activities and thermobarometry.  Contributions to Mineralogy and Petrology, v. 108,  p. 472-484.

Cosca, M.A., Hunziker, J.C., Huon, S., and Masson, H., 1992, Radiometric age constraints on mineral growth, metamorphism, and tectonism of the Gummfluh Klippe,  Briançonnais domain of the Préalpes, Switzerland.  Contributions to Mineralogy and Petrology, v. 112, p. 439-449.

 Cosca, M.A., Essene, E.J., Kunk, M.J., and Sutter, J.F., 1992, Differential unroofing within the Central Metasedimentary  Belt of the Grenville Orogen: constraints from⁴⁰Ar/³⁹Ar thermochronology.  Contributions to Mineralogy and Petrology, v. 110,  p. 211-225.

Spring, L., Bussy, F., Vannay, J.C., Huon, S., and Cosca, M.A., 1993, Early Permian granitic dykes of alkaline affinity in the Indian High Himalaya of Upper Lahul and SE Zanskar: geochemical characterization and geotectonic implications.  Journal of the Royal Society, v. 74, p. 251-264.

Cosca, M.A. and O'Nions R.K., 1994, A re-examination of the influence of composition on argon retentivity in metamorphic  calcic amphiboles.  Chemical Geology, v. 112, p. 39-56.

Odin, G.S., Assorgia, A., Barca, S., Porcu, A., Spano, J., and Cosca, M., 1994, ⁴⁰Ar/³⁹Ar geochronology of a Burdigalian tuff from central-northern Sardinia.  Giornale Geologia, v. 56, p. 185-197.

Odin, G.S., Jelen, B., Drobne, K., Uhan, J., Skaberne, D., PavŠic, J., Cimerman, F.. Cosca, M., and Hunziker, J.C., 1994, Premiers âge géochronologiques de niveaux volcaniclastiques oligocènes de la Région de Zasavje, Slovénie. Giornale Geologia, v. 56, p. 199-212.

van der Pluijm, B.A., Mezger, K., Cosca, M.A., and Essene, E.J., 1994, Determining the significance of high-grade shear zones by using temperature-time paths, with examples from the Grenville Orogen.  Geology, v. 22, p. 743-746. 

Cosca, M.A., Essene, E.J., Mezger, K., and van der Pluijm, B.A., 1995, Constraints on the duration of tectonic processes: protracted extension and deep crustal rotation in the Grenville Orogen.  Geology, v. 23, p. 361-364.

Crespo-Blanc, A., Masson, H., Sharp, Z., Cosca, M., and Hunziker, J., 1995, A stable and ⁴⁰Ar/³⁹Ar isotope study of a major thrust in the Helvetic nappes (Swiss Alps): evidence for fluid flow and constraints on nappe kinematics.  Geological Society of America Bulletin, v. 106, p. 1129-1144.

Odin, G.S., Takahashi, M., and Cosca, M., 1995, ⁴⁰Ar/³⁹Ar geochronology of biostratigraphically controlled Miocene tuffs from central Japan: Comparison with Italy and age of the Serravallian-Tortonian boundary. Chemical Geology, v. 125, p. 105-117.

Odin, G.S., Coccioni, R., Cosca, M., and Montanari, A., 1995, Geochronology of a Late Serravallian biotite-rich layer; dating of the FO of Globogerina nepenthes in the Central Apennines, Italy. Chemical Geology, v. 125, p. 118-121.

Ruffini, R., Cosca, M.A., d’Atri, A., Hunziker, J.C., and Polino, R., 1995, The volcanic supply of the Taveyanne turbidites (Savoie, France): a riddle for Tertiary Alpine volcanism. In: Polino, R. And Sacchi, R. (eds.) Rapporti Alpi-Appennino e Guide Alle Escursioni, Accademia Nazionale Delle Scienze Detta Dei XL, Roma, p. 359-376.

Schmädicke, E., Mezger, K., Cosca, M.A., and Okrusch, M., 1995, Variscan Sm/Nd and Ar/Ar ages of eclogite-facies rocks from the Erzgebirge, Bohemian Massif.  Journal of Metamorphic Geology, v. 13, p. 537 - 552.

Kirschner, D.L., Cosca, M.A., Hunziker, J.C., and Masson, H., 1996, Staircase ⁴⁰Ar/³⁹Ar spectra of fine-grained white mica: timing and duration of deformation and empirical constraints on argon diffusion. Geology, v. 24, p. 747-750.

Schärer, U., Cosca, M., Hunziker, J., and Steck, A., 1996, Termination of major ductile strike-slip shear and differential cooling along the Insubric line (Central Alps): U/Pb, Rb/Sr and ⁴⁰Ar/³⁹Ar ages of cross-cutting pegmatites.  Earth and Planetary Science Letters, v. 142, p. 331-352. 

Bill, M., Bussy, F., Cosca, M., Masson, H., and Hunziker, J.C., 1997, High-precision U-Pb and ⁴⁰Ar/³⁹Ar dating of an Alpine ophiolite (Gets nappe, French Alps).  Eclogae Geologicae Helvetiae, v. 90, p. 43-54.

Bryant, C.J., Cosca, M.A., and Arculus, R.J., 1997, ⁴⁰Ar/³⁹Ar ages of Clarence River Supersuite intrusions from the northern portion of the New England Batholith, southern New England Orogen. In Ashley, P.M. and Flood, P.G., eds., Tectonics and Metallogenesis of the New England Orogen, Geological Society of Australia Special Publication, v. 19, p. 242-253. 

Hoinkes, G., Thöni, M., Lichem, C., Bernhard, F., Kaindl, R., Schweigel, J., Tropper P., and Cosca, M., 1997, Metagranitoids and associated metasediments as indicators for the pre-Alpine magmatic and metamorphic evolution of the western Austroalpine Oetztal Basement (Kaunertal, Tirol). Swiss Bulletin of Mineralogy and Petrology, v. 77, p. 299-314.

Moecher, D.M., Cosca, M.A., and Hanson, G.N., 1997, Ar isotope and petrologic constraints on the middle to late Paleozoic thermotectonic history of the southern Connecticut Valley Zone, New England Appalachians. Geological Society of America Bulletin, v.109, p. 164-175.

Odin, G.S., d’Atri, A., Tateo, F., Cosca, M., and Hunziker, J.C., 1997, Integrated stratigraphy near the Oligocene-Miocene boundary in the Piedmont basin (Italy): biostratigraphy and geochronology.  In Montanari, A., Coccioni, R., and Odin, G. S. (eds.) Miocene Integrated Stratigraphic Sequence, p. 209-220.  Elsevier, Amsterdam.

Odin, G.S., Amorosi, A.,  Tateo, F., Coccioni, R., Cosca, M., Negri, A., Pini, G.A., and Hunziker, J.C., 1997, Integrated stratigraphy (biostratigraphy and geochronology) of the Early Miocene sequence from the Emilian Apennines (Italy).  In Montanari, A., Coccioni, R., and Odin, G. S. (eds.) Miocene Integrated Stratigraphic Sequence, p. 221-248. Elsevier, Amsterdam.

Odin, G.S., Cuenca Bescós, G., Canuda, J.J., Cosca, M., and Lago, M., 1997, Biostratigraphy and geochronology of a Miocene continental volcanoclastic layer from the Ebro basin, Spain.   In Montanari, A., Coccioni, R., and Odin, G. S. (eds.) Miocene Integrated Stratigraphic Sequence, p. 297-310. Elsevier, Amsterdam.

Odin, G.S., Miculan, P., Cosca, M., Tateo, F., Amorosi, A., and Hunziker, J.C., 1997, Biostratigraphy and geochronology of an Early Serravallian volcanoclastic layer from Sicily.   In Montanari, A., Coccioni, R., and Odin, G. S. (eds.) Miocene Integrated Stratigraphic Sequence, p. 351-360. Elsevier, Amsterdam.

Odin, G.S., Takahashi, M., Coccioni, R., and Cosca, M., 1997, Géochronologie de niveaux situés autour de l’apparition de Globigerina nepenthes au Japon et in Italie: âge de la limite Serravallien/Tortonien  In Montanari, A., Coccioni, R., and Odin, G. S. (eds.) Miocene Integrated Stratigraphic Sequence, p. 393-400. Elsevier, Amsterdam. 

Odin, G.S., Cosca, M., Tateo, F., Negri, A., Vai, G. B., and Hunziker, J.C., 1997, Integrated stratigraphy of the Late Tortonian Peive di Gesso section (Romagna, Italy).  In Montanari, A., Coccioni, R., and Odin, G. S. (eds.) Miocene Integrated Stratigraphic Sequence, p. 449-460. Elsevier, Amsterdam. 

Odin, G.S., Vai, G.B., Cosca, M., Tateo, F., and Hunziker, J.C., 1997, Contribution to the geochronology of the Tortonian/Messinian bundary in the Faenza (Romagna, Italy).  In Montanari, A., Coccioni, R., and Odin, G. S. (eds.) Miocene Integrated Stratigraphic Sequence, p. 519-528. Elsevier, Amsterdam.

Odin, G.S., Ricci Lucchi, F., Tateo, F., Cosca, M., and Hunziker, J.C., 1997, Integrated stratigraphy of the Maccarone section, Late Messinian (Marche region, Italy).  In Montanari, A., Coccioni, R., and Odin, G. S. (eds.) Miocene Integrated Stratigraphic Sequence, p. 529-544. Elsevier, Amsterdam.

Odin, G.S., Deino, A., Cosca, M., Laurenzi, M.A., and Montanari, A., 1997, Miocene geochronology: methods, techniques, and results.  In Montanari, A., Coccioni, R., and Odin, G. S. (eds.) Miocene Integrated Stratigraphic Sequence, p. 581-594. Elsevier, Amsterdam.

Restrepo-Pace, P.A., Ruiz, J., Gehrels, G., and Cosca, M., 1997, Distribution and petro-tectonic character of the Grenville-age basement in the Colombian Andes, based on new geochronological, geochemical, and isotopic data. Earth and Planetary Science Letters, v. 150, p. 427-441.

Cosca, M.A., Arculus, R.J., Pearce, J.A., and Mitchell, J.G., 1998, Inception and early evolution of the Izu-Bonin-Mariana arc system: evidence from ⁴⁰Ar/³⁹Ar and K-Ar geochronology.  The Island Arc, v. 7, p. 579-595.

Cosca, M.A., Mezger, K., and Essene, E.J., 1998, The Baltica-Laurentia connection: Sveconorwegian (Grenvillian) metamorphism, cooling, and unroofing in the Bamble Sector, Norway. Journal of Geology, v. 106, p. 539-552.

Markley, M.J., Teyssier, C., Cosca, M.A., Caby, R., Hunziker, J.C. and Sartori, M., 1998, Alpine deformation and ⁴⁰Ar/³⁹Ar geochronology of synkinematic white mica in the Siviez-Mischabel Nappe, western Pennine Alps, Switzerland. Tectonics, v. 17, p. 407-425.

Roberts, D., Cosca, M.A., and Rice, A.H.N., 1998, A ⁴⁰Ar/³⁹Ar dating study of very low-grade metamorphism from the Rybachi and Sredni Peninsulas, NW Russia-a preliminary report. Norwegian Geological Survey Report, v. 168, p. 1-17.

Cosca, M.A., Shimron, A., and Caby, R., 1999, Late Precambrian metamorphism and cooling in the Arabian-Nubian Shield: petrology and ⁴⁰Ar/³⁹Ar geochronology of metamorphic rocks of the Elat area (southern Israel).  Precambrian Research, v. 98, p. 107-127.

Dèzes, P.J., Vannay, J.-C., Steck, A., Bussy, F., and Cosca, M., 1999, Synorogenic extension: quantitative constraints on the age and throw of the Zanskar Shear Zone (NW Himalaya). Geological Society of America Bulletin, v. 111, p. 364-374.

Guillot, S., Cosca, M.A., Allemand, P., and Le Fort, P., 1999, Contrasting metamorphic and geochronologic evolution along the Himalayan Belt. In: Macfarlane, A., Sorkhabi, R.B., Quade, J. (eds) Himalaya and Tibet: Mountain Roots to Mountain Tops. Geological Society of America Special Paper, v. 328, p. 117-128.

Haeberlin, Y., Moritz, R., Fontboté, L., and Cosca, M., 1999, The Pataz gold province (Peru) within the frame of a mesothermal gold and antimony belt of the Eastern Andean Cordillera.  In: Stanley, C.J., et al. (eds.) Mineral deposits: processes to processing. Balkema, 2, 1323-326.

Jaboyedoff, M., and Cosca, M.A., 1999, Dating incipient metamorphism using ⁴⁰Ar/³⁹Ar geochronolgy and XRD modeling: a case study from the Swiss Alps. Contributions to Mineralogy and Petrology, v. 135, p. 93-113.

Mezger, K., and Cosca, M.A., 1999, The thermal history of the Eastern Ghats (India) as revealed by U-Pb and ⁴⁰Ar/³⁹Ar dating of metamorphic and magmatic minerals: implications for the SWEAT correlation. Precambrian Research v. 94, p. 251-271.

Giorgis, D., Cosca, M.A., Li, S., 2000, Distribution and significance of extraneous argon in UHP eclogite (Sulu terrane, China): insights from in-situ ⁴⁰Ar/³⁹Ar UV-laser ablation analysis. Earth and Planetary Science Letters, v. 181, p. 605-615.

de Sigoyer, J., Chavagnac, V., Blichert-Toft, J., Villa, I., Luais, B., Guillot, S., Cosca, M., and Mascle, G., 2000, Dating the Indian continental subduction and collisional thickening in the northwest Himalaya: Multichronology of the Tso Morari eclogites. Geology, v.  28, p. 487-490. 

Zeh, A., Cosca, M., Brätz, H., Okrusch, M., and Tichomirova, M., 2000, Simultaneous horst-basin formation and magmatism during Late Variscan transtension: evidence from⁴⁰Ar/³⁹Ar and ²⁰⁷Pb/²⁰⁶Pb geochronology  of the Ruhla Crystalline Complex,  International Journal of Earth Science, v.  89, p. 52-71. 

D’Atri, A., Dela Pierre, Ruffini, R., Novaretti, A., Cosca, M., Hunziker, J.C., 2001, Calcareous plankton biostratigraphy and ⁴⁰Ar/³⁹Ar dating of Miocene volcanoclastic layers from Monferrato (NW Italy). Eclogae Geologicae Helvetiae, v. 94, p. 137-144. 

Crowe, W.A., Cosca, M.A., Harris, L.B., 2001, ⁴⁰Ar/³⁹Ar geochronology and Neoproterozoic tectonics along the northern margin of the Eastern Ghats Belt in north Orissa, India. Precambrian Research, v. 108, p. 237-266.

Edel, J-B., Dubois, D., Marchant, R., Hernandez, J., and Cosca, M., 2001, La rotation miocène inférieur du bloc corso-sarde. Nouvelles contraintes paléomagnetiques sur la fin du mouvement.  Bulletin Societé géologique de France, v. 172, p. 275-283.

Janák, M., Plašienka, D., Frey, M., Cosca, M., Schmidt, S., Lupták, B., and Meres, S., 2001, Cretaceous evolution of a metamorphic core complex, the Verporic unit, Western Carpathians (Slovakia): P-T conditions and in situ ⁴⁰Ar/³⁹Ar UV laser probe dating of metapelites. Journal of Metamorphic Geology, v. 19, p. 197-216.

Kramar, N., Cosca, M.A., Hunziker, J.C., 2001, Heterogenous ⁴⁰Ar* distributions in naturally deformed muscovite: in situ UV-laser ablation evidence for microstructurally controlled intragrain diffusion. Earth and Planetary Science Letters, v. 192, p. 377-388.

Odin, G.S., Takahashi, M., and Cosca M.A., 2001, ⁴⁰Ar/³⁹Ar geochronology of Middle Miocene calcareous nannofossil biohorizhons in central Japan. Chemical Geology, v. 171, p. 239-252.

de Sigoyer, J., Chavagnac, V., Blichert-Toft, J., Villa, I., Luais, B., Guillot, S., Cosca, M., and Mascle, G., 2001, Dating the Indian continental subduction and collisional thickening in the northwest Himalaya: Multichronology of the Tso Morari eclogites. Comment and Reply, Geology, v. 29, p. 191-192.

Feeley, T.C., Cosca, M.A., and Lindsay, C.R., 2002, Petrogenesis and implications of calc-alkaline cryptic hybrid magmas from Washburn volcano, Absaroka Volcanic Province, USA. Journal of Petrology, v. 43, p. 663-703.

Markley, M., Teyssier, C., and Cosca, M., 2002, The relation between grain size and ⁴⁰Ar/³⁹Ar date for Alpine white mica from the Siviez-Mischabel Nappe, Switzerland. Journal of Stuctural Geology, v. 24, p. 1937-1955.

Mulch, A., Cosca, M.A., and Handy, M.R., 2002, In situ UV-laser ⁴⁰Ar/³⁹Ar geochronology of a micaceous mylonite: an example of defect-enhanced argon loss. Contributions to Mineralogy and Petrology, v. 142, p. 738-752.

Solé, J., Cosca, M., Sharp, Z., and Enrique, P, 2002, ⁴⁰Ar/³⁹Ar geochronolgy and stable isotope geochemistry of late-Hercynian intrusions from north-eastern Iberia with implications for argon loss in K-feldspar. International Journal of Earth Science, v. 91, p. 865-881.

Bendezú, R., Fontbonté, L., Cosca, M., 2003, Relative age of Cordilleran base metal lode and replacement deposits, and high sulfidation Au-(Ag) epithermal mineralization in the Colquijirca district, central Peru.  Mineralium Deposita, v. 38, p. 683-694.

Camprubí, A., Ferrari, L., Cosca, M.A., Cardellach, E., Canals, A., 2003, Ages of epithermal deposits in Mexico: regional significance and links with the evolution of Tertiary volcanism. Economic Geology, v. 98, p. 1029-1037.

Feeley, T.C., and Cosca, M.A., 2003, Time vs. composition trends of magmatism at Sunlight volcano, Absaroka Volcanic Province, Wyoming. Geological Society of America Bulletin, v. 115, p. 714-728.

Giorgis, D., Cosca, M.A., Rumble, D., 2003, Pre-metamorphic d¹⁸O signatures in morphologically complex zircons from the Qinglongshan UHP meta-granite (Sulu terrain, China).  Swiss Bulletin of Mineralogy and Petrology, v. 83, p. 133-144.

Jourdan, F., Marzoli, A., Bertrand, H., Cosca, M., Fontignie, D., 2003, The Northernmost CAMP: ⁴⁰Ar/³⁹Ar age, petrology and Sr-Nd-Pb isotope geochemistry of the Kerforne dike, Brittany, France. In: Hames, W.C et al. (eds.) The Central Atlantic Magmatic Province: Fragments of Pangea,  AGU Geophysical Monograph, v. 136, DOI: 10.1029/136GM11.

Kirschner, D.L., Cosca, M.A., and Masson, H., 2003, Timing of deformation in the Helvetic Alps: evidence from ⁴⁰Ar/³⁹Ar and Rb/Sr geochronology of white micas.  Contributions to Mineralogy and Petrology, v. 145, p. 460-480.

Kramar, N., Cosca, M.A., Buffat, P.A., and Baumgartner, L.P., 2003, Stacking fault-enhanced argon diffusion in naturally deformed muscovite.  In Vance, D., Muller, W., and Villa, I., eds.,  Geochronology: Linking the Isotopic Record with Petrology and Textures, Geological Society of London. Special Publication v. 220, p. 249-260.

Rodríguez Aller, J., Cosca, M. A., Gil Ibarguchi, J. I., and Dallmeyer, R. D., 2003, Strain partitioning and preservation of  ⁴⁰Ar/³⁹Ar ages for the eclogite-facies stage during Variscan exhumation of a subducted crust (Malpica-Tui allochthon, NW Spain) Lithos, v. 70, p. 111-139.

Schlup, M., Carter, A., Cosca, M., and Steck, A., 2003, Exhumation history of eastern Ladakh revealed by ⁴⁰Ar/³⁹Ar and fission-track ages: the Indus River-Tso Morari transect, NW Himalaya.  Journal of the Geological Society of London, v. 160, p. 385-369.

Haeberlin, Y., Moritz, R., Fontboté, L., and Cosca, M., 2004, Carboniferous orogenic gold deposits at Pataz, Eastern Andean Cordillera, Peru: Geological and structural framework, paragenesis, alteration, and ⁴⁰Ar/³⁹Ar geochronology.  Economic Geology, v. 99, p. 73-112.

Mulch, A. and Cosca, M.A., 2004, Crystallization or cooling ages? In situ UV-laser ⁴⁰Ar/³⁹Ar  geochronology of muscovite in mylonitic rocks.  Journal of  the Geological Society of London, v. 161, p. 573-582.

Mulch, A., Teyssier, C., Cosca, M.A., Vanderhaeghe, O., and Vennemann, T., 2004, Reconstructing paleoelevation in eroded orogens.  Geology, v. 32, p. 525-528. 

Winer, G.S., Feeley, T.C., and Cosca, M.A., 2004, Basaltic volcanism in the Bering Sea: geochronology and volcanic evolution of St. Paul Island, Pribilof Islands, Alaska.  Journal of  Volcanology and Geothermal Research, v. 134, p. 277-301.

Vannay, J-C., Grasemann, B., Rahn, M., Frank, W., Carter, A., Baudraz, V., Cosca, M., 2004, Miocene to Holocene exhumation of metamorphic crustal wedges in the NW Himalaya: evidence for tectonic extrusion coupled to fluvial erosion.  Tectonics, v. 23, DOI:10.1029/2002TC001429.

Cosca, M.A., Giorgis, D., Rumble, D., Liou, J.G., 2005, Limiting effects of UHP metamorphism on length-scales of oxygen, hydrogen, and argon isotope exchange: an example from the Qinglongshan UHP eclogites.  International Geology Review, v. 47, p. 716-749.

Cosca, M.A., Caby, R., and Bussy, F., 2005, Geochemistry and ⁴⁰Ar/³⁹Ar geochronology of pseudotachylyte associated with UHP whiteschists from the Dora Maira massif, Italy.  Tectonophysics, v. 402, p. 93-110. 

Mulch, A., Cosca, M.A., Fiebig, J., and Andresen, A., 2005, Time scales of deformation and exhumation in extensional detachment systems determined by high-spatial resolution in situ UV-laser ⁴⁰Ar/³⁹Ar dating.   Earth and Planetary Science Letters, v. 233, p. 375-390.

Putlitz, B., Cosca, M.A., and Schumacher, J., 2005, Prograde mica ⁴⁰Ar/³⁹Ar growth ages recorded in high pressure rocks (Syros, Cyclades, Greece).  Chemical Geology, v. 214, p. 79-98.

Cosca, M. A., Giorgis, D., Rumble, D., and Liou, J. G. 2006, Limiting effect of UHP metamorphism on length scales of oxygen, hydrogen, and argon isotope exchange: an example from the Qinglongshan UHP ecologites, Sulu Terrane, China: In: Phase relations, high-pressure terranes, P-T-ometry, and plate pushing: a tribute to W. G. Ernst. International Book Series, v. 9, p. 290-323.

Manatschal, G., Engström, A., Desmurs, L., Schaltegger, U., Cosca, M., Müntener, O., Bernoulli, D., 2006, What is the tectono-metamorphic evolution of continental break-up: the example of the Tasna ocean-continent transistion. Journal of Structural Geology, v. 28, p. 1849-1869.

Mulch, A._, Teyssier, C, Cosca, M.A, and Vennemann, T.W., 2006, Thermomechanical analysis of strain localization in a ductile detachment zone.  Journal of Geophysical Research Solid Earth, v. 111, doi:10.1029/2005JB004032.

Mulch, A., Teyssier, C., Cosca, M. A., and Chamberlain, C. P., 2007, Stable isotope paleoaltimetry of Eocene core complexes in the North American Cordillera, Tectonics, v. 26, TC4001, doi:10.1029/2006TC00199.

Keane, S.D., DeWolf, C.P., Essene, E.J., Halliday, A.N., Hall, C.M., Cosca, M.A., 2007, Isotopic Constraints on the Thermal History of the Wind River Range, Wyoming: Implications for Archean Metamorphism. Canadian Journal of Earth Science, v. 43, 1511-1532.

Zechmeister, M.S., Ferre, E., Cosca, M.A., Geissman, J.W., 2007, Slow and fast deformation in the Dora Maira Massif, Italian Alps: Pseudotachylytes and inferences on exhumation history.  Journal of Stuctural Geology, v. 29, p. 1114-1130.

Broecker, M., Klemd, R., Cosca, M., Brock, W., Larionov, A.N., and Rodionov, N., 2009, The timing of eclogite facies metamorphism and migmatization in the Orlica–Śnieżnik complex, Bohemian Massif: constraints from a multimethod geochronological study. Journal of  Metamorphic Geology, v. 27, p. 385-403.

Larson, P.B., Phillips, A., John, D., Cosca, M.A., Pritchard, C., 2009, A preliminary study of older hot spring alteration in Sevenmile Hole, Grand Canyon of the Yellowstone River, Yellowstone Caldera, Wyoming: Journal of Volcanology and Geothermal Research, v. 188, p. 225-236.

Cole, J.C., Trexler, J.H., Cashman, P.H., Miller, I., Shroba, R.R, Cosca M.A., Workman, J.B., 2010, Beyond Colorado’s Front Range: A new look at Laramide basin subsidence, sedimentation, and deformation in north-central Colorado: In: Morgan, L.A., and Quane, S.l., eds., Through the Generations: Geologic and Anthropogenic Field Excursions in the Rocky Mountains from Modern to Ancient: Geological Society of America Field Guide 18, p. 55-76

Ramalho, R.S., Helffrich, G., Cosca, M., Vance, D., Hoffmann, D., and Schmidt, D.N., 2010, Vertical movements of ocean island volcanoes: insights from a stationary plate environment: Marine Geology, v. 275, p. 84-95.

Ramalho, R.S., Helffrich, G., Cosca, M., Vance, D., Hoffmann, D., and Schmidt, D.N., 2010, Episodic swell growth inferred from variable uplift of the Cape Verde hotspot islands: Nature Geoscience, v. 3, p. 774-777.

Schlup, M., Steck, A., Carter, A., Cosca, M., Epard, J-L., and Hunziker, J., 2010, Exhumation history of the NW Indian Himalaya revealed by fission track and ⁴⁰Ar/³⁹Ar ages: Journal of Asian Earth Sciences, v. 40, p. 334-350.

van der Lelij, R., Spikings, R.A., Kerr, A., Kounov, A., Cosca M., Chew, D., and Villagomez, D., 2010, Thermochronology and tectonics of the Leeward Antilles: Evolution of the southern Caribbean Plate boundary zone: Tectonics, v. 29, TC6003, doi:10.1029/2009TC00265.

Drenth, B.J., Turner, K.J., Thompson, R.A., Grauch, V.J.S., Cosca, M.A., and Lee, J.P., 2011, Geophysical expression of elements of the Rio Grande Rift in the northeast Tusas Mountains; preliminary interpretations Geology of the Tusas Mountains and Ojo Caliente area Guidebook - New Mexico Geological Society, v. 62, p. 165-175.

Cosca, M.A., Stunitz, H., Bourgeix, A-L., 2011, ⁴⁰Ar* loss in experimentally deformed muscovite and biotite with implications for ⁴⁰Ar/³⁹Ar geochronology of naturally deformed rocks: Geochimica et Cosmochimica Acta, v. 75, p. 7759-7778.

Trexler, J., Cashman, P., and Cosca, M., 2012, Constraints on the history and topography of the Northeastern Sierra Nevada from a Neogene sedimentary basin in the Reno-Verdi area, Western Nevada. Geosphere, v. 8, p. 548-561.

Tollo, R.P., Aleinikoff, J.N., Mundil, R., Southworth, C.S., Cosca, M.A., Rankin, D.W., Rubin, A.E., Kentner, A.E., Parendo, C.A., and Ray, M.S., 2012, Igneous activity, metamorphism, and deformation in the Mount Rogers area of SW Virginia and NW North Carolina: A geologic record of Precambrian tectonic evolution of the southern Blue Ridge Province, in Eppes, M.C., and Bartholomew, M.J., eds., From the Blue Ridge to the Coastal Plain: Field Excursions in the Southeastern United States: Geological Society of America Field Guide 29, p. 1–66, doi:10.1130/2012.0029(01).

Cosca M.A., 2013, Structural Fabrics (K-Ar/Ar-Ar). In: Rink W., Thompson J. (Ed.) Earth Sciences Series. Encyclopedia of Scientific Dating Methods: SpringerReference (www.springerreference.com). Springer-Verlag Berlin Heidelberg. DOI: 10.1007/SpringerReference_359085 2013-10-29 01:18:41 UTC.

Buchs, D., Pilet, S., Baumgartner, P., Cosca, M., Flores, K., and Bandini, A., 2013, Low-volume intraplate volcanism in the Early/Middle Jurassic Pacific basin documented by accreted sequences in Costa Rica.  Geology, Geophysics, Geosystems (G³), v. 14, p. 1552-1568 

Zhou, R., Schoenbohm, L.M., and Cosca, M.A., 2013, Recent, slow normal and strike-slip faulting in the Pasto Ventura region of the southern Puna Plateau, NW Argentina.  Tectonics, v. 32, p. 1-17.

Lüdecke, T., Mikes, T., Rojay, F.B., Cosca, M., and Mulch, A., 2013, Stable isotope-based reconstruction of Oligo-Miocene paleoenvironment and paleohydrology of Central Anatolian lake basins (Turkey).  Turkish Journal of Earth Sciences, v. 22, p. 793-819.

Farmer, G.L., Glazner, A.F., Kortmeier, W.T., Cosca, M.A., Jones, C.H., Moore, J.E., and Schweickert, R.A., 2013, Mantle lithosphere as a source of postsubduction magmatism, northern Sierra Nevada, California.  Geosphere, v. 9, p. 1102-1124.

Kellogg, K.S., Lee, Keenan, Premo, W.R., and Cosca, M.A., 2013, Geologic map of the Harvard Lakes 7.5' quadrangle, Park and Chaffee Counties, Colorado: U.S. Geological Survey Scientific Investigations Map 3267, 22 p., scale 1;24,000, http://dx.doi.org/10.3133/sim3267.

Cosca, M.A., Thompson, R.A., Lee, J.P., Turner, K.J., Neymark, L.A., and Premo, W.R., 2014, ⁴⁰Ar/³⁹Ar Geochronology, Isotope Geochemistry (Sr, Nd, Pb), and Petrology of Alkaline Lavas Near Yampa, Colorado: Migration of Alkaline Volcanism and Evolution of the Northern Rio Grande Rift. Geosphere, v. 10, no. 2, p. 374–400; doi:10.1130/GES00921.1 

Thompson, R.A., Turner, K.J., Shroba, R.R., Cosca, M.A., Ruleman, C.A., Lee, J.P., and Brandt, T.R., 2014, Geologic map of the Sunshine 7.5' quadrangle, Taos County, New Mexico: U.S. Geological Survey Scientific Investigations Map 3283, scale 1:24,000, http://dx.doi.org/10.3133/sim3283.

Thompson, R.A., Turner, K.J., Shroba, R.R., Cosca, M.A., Ruleman, C.A., Lee, J.P., and Brandt, T.R., 2014, Geologic map of the Ute Mountain 7.5' quadrangle, Taos County, New Mexico, and Conejos and Costilla Counties, Colorado: U.S. Geological Survey Scientific Investigations Map 3284, scale 1:24,000, http://dx.doi.org/10.3133/sim3284.

McQuarrie, N., Tobgay, T., Long, S.P., Reiners, P.W., Cosca, M.A., 2014, Variable exhumation rates and variable displacement rates: Documenting recent slowing of Himalayan shortening in western Bhutan, Earth and Planetary Science Letters, v. 386, pp. 161-174. 

Idleman, L., Cosca, M.A., Heizler, M.T., Thomson, S.N., Teyssier, C., Whitney, D.L., 2014, Tectonic burial and exhumation cycles tracked by muscovite and K-feldspar⁴⁰Ar/³⁹Ar  thermochronology in a strike-slip fault zone, central Turkey, Tectonophysics, v. 612-613, pp. 134-146.

Carrapa, B., Schoenbohm, L.G., Mustapha, F.S., Sobel, E.R., Cosca, M., DeCelles, P.G., Gehrels, G., Russell, J., and Goodman, P., 2014, Multisystem dating of modern river detritus from Tajikistan and China: Implications for crustal evolution and exhumation of the Pamir, Lithosphere, doi: 10.1130/L360.1.