Publications

Published peer-reviewed papers:

Adirondack Highlands & the Grenville orogen

• Metzger, E.P., Leech, M.L., *Davis, M., *Reeder, J., *Swanson, B., and Waring, H., 2021, Ultrahigh-temperature granulite-facies metamorphism and exhumation of deep crust in a migmatite dome during late- to post-orogenic collapse and extension in the central Adirondack Highlands, Geosphere.
• **Davis, M., Leech, M.L., and Metzger, E.P., 2020, Determining the petrotectonic evolution of Ledge Mountain migmatites with phase equilibria modeling and melt reintegration: Adirondack Highlands, New York, American Geophysical Union, Fall Meeting Supplement, Abstract V019-0004.
• **Davis, M., Leech, M.L., and Metzger, E.P., 2020, Determining the petrotectonic evolution of Ledge Mountain migmatites with phase equilibria modeling and melt reintegration: Adirondack Highlands, New York, Geological Society of America Abstracts with Programs, 52, 6, doi: 10.1130/abs/2020AM-358255. 
• Leech, M.L., Metzger, E.M., and **Swanson, B., 2019, Evidence for ultrahigh-temperature (UHT) metamorphism in the Adirondack Highlands, Geological Society of America Annual Meeting, Abstract T23-4-11, doi: 10.1130/abs/2019AM-339742.
• Leech, M.L., *Swanson, B., and Metzger, E., 2017, Kyanite-bearing migmatites at Ledge Mountain, Adirondack Highlands, American Geophysical Union, Fall Meeting Supplement, Abstract V31B-0512.
• *Reeder, J., Metzger, E., Bickford, M.E., Leech, M.L., and Waring, H., 2016, Kyanite-bearing migmatites in the central Adirondack Mountains: Implications for late- to post-orogenic metamorphism and melting in a collisional orogen, American Geophysical Union, Fall Meeting Supplement, Abstract V23D-3009.
• *Reeder, J., Metzger, E., Bickford, M.E., and Leech, M.L., 2016, Kyanite-bearing migmatites in the central Adirondack Mountains: determining a P-T-t path and its implications on conceptual models, Geological Society of America Abstracts with Programs, Vol. 48, No. 7, Paper No. 336-12, doi: 10.1130/abs/2016AM-285430.

The graphite-diamond transition & diamond preservation in UHP rocks

• Sonin, V., Leech, M.L., Chepurov, A., Zhimulev, E., and Chepurov, A., 2018, Why are diamonds preserved in UHP metamorphic complexes? Experimental evidence for the effect of pressure on diamond graphitization, International Geology Review, doi:10.1080/00206814.2018.1435310.
• Bostick, B., Jones, R.E., Chen, C., Ernst, W.G., Leech, M.L., and Beane, R.J., 2003, Low-temperature microdiamond aggregates in the Maksyutov metamorphic complex, south Ural Mountains, Russia, American Mineralogist, 88, 1709-1717.
• Leech, M.L. and Ernst, W.G., 1998. Graphite pseudomorphs after diamond?  A carbon isotope and spectroscopic study of graphite cuboids from the Maksyutov Complex, south Ural Mountains, Russia, Geochimica et Cosmochimica Acta, 62, p. 2143-2154.

The Himalaya and southern Tibetan plateau 

• Leech, M.L. and Hassett, W.C.**, in revision, Comparing three gneiss domes from the western and eastern Himalaya: The Leo Pargil, Renbu, and Yalashangbo domes.
• Horton, F.** and Leech, M.L., 2013, Age and origin of granites in the Karakoram shear zone and Greater Himalaya Sequence, NW India, Lithosphere, doi:10.1130/L213.1.
• Klemperer, S.L., Kennedy, B.M., Sastry, S.R., Makovsky, Y., Harinarayana, T., and Leech, M.L., 2013, Mantle fluids in the Karakoram fault: Helium isotope evidence, Earth and Planetary Science Letters.
• Leech, M.L., Klemperer, S.L., and Mooney, W.D., 2010, Proceedings for the 25th Himalaya-Karakoram-Tibet Workshop, San Francisco, California, U.S.A., U.S. Geological Survey, Open-File Report 2010-1099, 242 p.
• Leech, M.L., 2009, Reply to comment by M.P. Searle and R.J. Phillips (2009) and R.R. Parrish (2009) on: "Does the Karakoram fault interrupt mid-crustal channel flow in the western Himalaya?", Earth and Planetary Science Letters (2009), doi:10.1016/j.epsl.2009.05.039. This pdf also includes the two comments.
• Leech, M.L., 2008, Does the Karakoram fault interrupt mid-crustal channel flow in the western Himalaya?, Earth and Planetary Sciences, 276, 314-322.
• Leech, M.L., Singh, S., and Jain, A.K., 2008, Continuous metamorphic zircon growth and interpretation of U-Pb SHRIMP dating: An example from the western Himalaya: In, "Metamorphic conditions along convergent plate junctions: Mineralogy, petrology, geochemistry, and tectonics" (W.G. Ernst and D. Rumble III, eds.), Geological Society of America International Book Series, 10, 433-448.
• Leech, M.L., Singh, S., Jain, A.K., 2007, Continuous metamorphic zircon growth and interpretation of U-Pb SHRIMP dating: An example from the western Himalaya, International Geology Review, 49, 313-328.
• Leech, M.L., Singh, S., Jain, A.K., and Klemperer, S.L., and Manickavasagam, R.M., 2006, Reply to comment by P.J. O'Brien on: "The onset of India-Asia continental collision: Early, steep subduction required by the timing of UHP metamorphism in the western Himalaya" by Mary L. Leech, S. Singh, A.K. Jain, Simon L. Klemperer and R.M. Manickavasagam, Earth and Planetary Science Letters 234 (2005) 83-97, Earth and Planetary Science Letters, 245, 817-820.
• Leech, M.L., Singh, S., Jain, A.K., and Klemperer, S.L., and Manickavasagam, R.M., 2005, The onset of India-Asia continental collision: Early, steep subduction required by the timing of UHP metamorphism in the western Himalaya, Earth and Planetary Science Letters, 234, 83-97.

The Dabie-Sulu orogen in Eastern China

• Leech, M.L. and Webb, L.E., 2013, Is the HP-UHP Dabie-Sulu orogen a piercing point for offset on the Tan-Lu fault?, Journal of Asian Earth Sciences, 63, 112-129.
• Yang, T.N., Peng, Y., Leech, M.L., and Lin, H.Y., 2011, Fold patterns indicating Triassic constrictional deformation on the Liaodong peninsula, eastern China, and tectonic implications, Journal of Asian Earth Sciences, 40,72-83, doi:10.1016/j.jseaes.2010.08.017.
• Leech, M.L., Webb, L.E., and Yang, T., 2006, Diachronous histories for the Dabie-Sulu orogen from high-temperature geochronology, Geological Society of America Special Paper 403, 1-22.
• Webb, L.E., Leech, M.L., and Yang, T., 2006, 40Ar/39Ar thermochronology of the Sulu terrane: Late Triassic exhumation of high and ultrahigh-pressure rocks and other implications for Mesozoic tectonics in East Asia, Geological Society of America Special Paper 403, 77-92.
• Yang, T., Xu, Z., and Leech, M.L., 2004, Mass balance during retrogression of eclogite-facies minerals in the Rongcheng eclogite, eastern Sulu UHPM terrane, China, American Mineralogist, 89, 1525-1532.

The Ural Mountains, Russia 

• Fedkin, V.V., Burlick, T.D.*, Leech, M.L., Shchipansky, A.A., Valizer, P.M., , and Ernst, W.G., 2021, Petrotectonic origin of mafic eclogites from the Maksyutov subduction complex, south Ural Mountains, Russia, Geological Society of America, Special Paper in Honor of Eldridge M. Moores (edited by J. Wakabayashi, Y. Dilek, and Ogawa).
• Fedkin, V.V., Leech, M.L., Shchipansky, A.A., Valizer, P.M., Burlick, T.D.*, and Ernst, W.G., 2017, Coexisting zoned garnets and clinopyroxenes from mafic eclogites of the Maksyutov Complex, south Ural Mountains, Russia, Experiment in Geosciences, 23, 1-10.
• Beane, R.J. and Leech, M.L., 2007, The Maksyutov Complex: The first UHP terrane 40 years later, in Cloos, M., Carlson, W.D., Gilbert, M.C., Liou, J.G., and Sorensen, S.S., eds., Convergent Margin Terranes and Associated Regions: A Tribute to W.G. Ernst: Geological Society of America Special Paper 419, p.153-169, doi: 10.1130/2006.2419(08).
• Leech, M.L. and Willingshofer, E., 2004, Thermal modeling of an ultrahigh-pressure complex in the south Urals, Earth and Planetary Science Letters, 226, 85-99.
• Bostick, B., Jones, R.E., Chen, C., Ernst, W.G., Leech, M.L., and Beane, R.J., 2003, Low-temperature microdiamond aggregates in the Maksyutov metamorphic complex, south Ural Mountains, Russia, American Mineralogist, 88, 1709-1717.
• Leech, M.L., 2001, Arrested orogenic development: eclogitization, delamination, and tectonic collapse, Earth and Planetary Science Letters, 185, p. 149-159.
• Leech, M.L. and Ernst, W. G., 2000, Petrotectonic evolution of the high- to ultrahigh-pressure Maksyutov Complex, Karayanova area, south Ural Mountains:  Structural and oxygen isotope constraints, Lithos, 52, p. 235-252.
• Leech, M.L. and Stockli, D.F., 2000, The late exhumation history of the ultrahigh-pressure Maksyutov Complex, south Ural Mountains, from new apatite fission track data, Tectonics, 19, p. 153-167.
• Leech, M.L., 1999, Petrotectonic evolution of the Maksyutov Complex, south Ural Mountains, Russia, Ph.D. dissertation, Stanford University, 117 p.
• Ernst, W.G., Mosenfelder, J.L., Leech, M.L., and Liu, J., 1998, H2O recycling during continental collision: phase-equilibrium and kinetic considerations. In When Continents Collide, eds., B.R. Hacker and J.G. Liou, Kluwer Academic, Netherlands, 275-295.
• Leech, M.L. and Ernst, W.G., 1998. Graphite pseudomorphs after diamond?  A carbon isotope and spectroscopic study of graphite cuboids from the Maksyutov Complex, south Ural Mountains, Russia. Geochimica et Cosmochimica Acta, 62, p. 2143-2154.
• Beane R.J., Liou J.G., Coleman R.G., and Leech M.L., 1995, Petrology and retrograde P-T path for eclogites of the Maksyutov Complex, southern Ural Mountains, Russia, Island Arc, 4, p. 254-266.
• Lennykh V.I., Valizer P.M., Beane R.J., Leech M.L., and Ernst W.G, 1995. Petrotectonic evolution of the Maksyutov Complex, south Urals, Russia: Implications for ultrahigh-pressure metamorphism, International Geology Review, 37, p. 584-600.

Eclogitization & the  role of fluids in brittle-ductile processes, Norway

• Leech, M.L. and Shulman, D.J., in revision, Fluid-controlled metamorphism of eclogitic pseudotachylite-bearing shear zones, Flakstadøy, northern Norway.
• Leech, M.L. and **Shulman, D.J., 2014, Fluid-controlled eclogitization of pseudotachylyte-bearing shear zones, Flakstadøy, Norway, Goldschmidt conference abstract, 22f-302.
• Leech, M.L. and **Shulman, D.J., 2012, Fluid-controlled metamorphism of eclogitic pseudotachylite-bearing shear zones, Flakstadøy, northern Norway, Eos Trans., Am. Geophys. Union, Fall Meeting Supplement, Abstract MR51A-03.
• *Dutra, S.M., **Shulman, D.J., and Leech, M.L., 2010, Thermobarometry of eclogites-facies shear zones in the Lofoten Islands, Norway, Geol. Soc. Am. Abstr. Prog., 42,  p. 100.
• Leech, M.L., **Shulman, D., and *Dutra, S., 2009, Pseudotachylite in eclogite-facies shear zones from the Lofoten Islands, northern Norway, Eos Trans., Am. Geophys. Union, Fall Meeting Supplement, Abstract V43C-2265.
• **Shulman, D., Leech, M.L., and *Dutra, S., 2009, Eclogite-facies pseudotachylite in deep crustal rocks exposed in northern Norway, Geol. Soc. Am. Abstr. Prog., 41, p. 485.
• *Polito, C. and Leech, M.L., 2006, Petrology and new U-Pb SHRIMP dating for eclogues of the Lofoten Islands, Flakstadøy and Vestvagøy, northern Norway, Eos Transactions AGU, 87, Fall Meeting Supplement, Abstract V31A-0571.

Cordilleran gneiss domes

• **Liu, R. and Leech, M.L., 2016, Regional tectonic evolution of the Pioneer metamorphic complex, south-central Idaho, Am. Geophys. Union, Fall Meeting Supplement, Abstract #T51F-2994.

Other publications - Education-related

• Leech, M.L., Howell, D.G., and Egger, A.E., 2004, A guided inquiry approach to learning the geology of the U.S., Journal of Geoscience Education, 52, 368-373.