Subvolcanic Magma Accumulation Rates and Volcano-pluton Connections
Work here is focused on 1) the Southern Rocky Mountain Volcanic field of Colorado and New Mexico in collaboration with Bill McIntosh (New Mexico Tech) and Peter Lipman (Emeritus USGS), and 2) the Sierra Nevada batholith of California in collaboration with Allen Glazner (UNC) and John Bartley (University of Utah). We are trying to understand the rates and mechanisms of pluton construction and are reevaluating the links between magmas trapped underground preserved as plutonic rocks and those that erupt as volcanic rocks. The Southern Rockies provide a chance to study volcanic rocks and their related shallow intrusive rocks exposed along the flanks of the Rio Grande Rift. In the Sierra Nevada, the glacially “cleaned” 3D exposure presents an opportunity to study the subvolcanic roots of a former continental arc.
*Indicates paper authored by student with Coleman as an advisor
Bartley, J.M., Glazner, A.F. and Coleman, D.S., 2018, Diking and deformation of granodiorite during growth of the Half Dome pluton, Yosemite National Park, California: resubmitted to Geosphere, v. 14, no. 3, doi:10.1130/GES01458.1.
Coleman, D.S., Mills, R.D. and Zimmerer, M.J, 2016, The pace of plutonism. Elements, v. 12, no. 2, p. 97-102, doi: 10.2113/gelements.12.2.97.
Rioux, M., Farmer, G.L., Bowring, S.A., Wooton, K.M., Amato, J.M., Coleman, D.S. and Verplanck, P.L., 2016, The link between volcanism and plutonism in epizonal magma systems; high‑precision U–Pb zircon geochronology from the Organ Mountains caldera and batholith, New Mexico, Contributions to Mineralogy and Petrology, v. 171, no. 13, DOI 10.1007/s00410-015-1208-6
*Frazer, R.E., Coleman, D.S., and Mills, R.D., 2014, Zircon U-Pb geochronology of the Mount Givens Granodiorite: Implications for the genesis of large volumes of eruptible magma: Journal of Geophysical Research, v. 119, no. 4, doi:10.1002/2013JB010716.
*Mills, R.D., and Coleman, D.S., 2013, Temporal and chemical connections between plutons and ignimbrites from the Mount Princeton magmatic center: Contributions to Mineralogy and Petrology, v. 165, p. 961-980, doi:10.1007/s00410-012-0843-4.
Coleman, D.S., Bartley, J.M., Glazner, A.F., and Pardue, M.A., 2012, Is chemical zonation in plutonic rocks driven by changes in source magma composition, or shallow crustal differentiation?: Geosphere, v. 8, no. 6, p. 1568–1587; doi:10.1130/GES00798.1.
*Davis, J.W., Coleman, D.S., Gracely, J.T., Gaschnig, R., and Stearns, M., 2012, Magma accumulation rates and thermal histories of plutons of the Sierra Nevada batholith, CA: Contributions to Mineralogy and Petrology, v. 163, no. 3, p. 449-465, doi: 10.1007/s00410-011-0683-7.
*Tappa, M.J., Coleman, D.S., Mills, R.D., and Samperton, K. M., 2011, The plutonic record of a silicic ignimbrite from the Latir volcanic field, New Mexico: Geochemistry, Geophysics, Geosystems, v. 12, no. 10, Q10011, doi: 10.1029/2011GC003700.
*Mills, R.D., Glazner, A.F., and Coleman, D.S., 2009, Scale of pluton/wall rock interaction near May Lake, Yosemite National Park, California, USA: Contributions to Mineralogy and Petrology, v. 158, p. 263-281, doi: 10.1007/s00410-009-0381-x.
*Gray, W., Glazner, A.F., Coleman, D.S. and Bartley, J.M., 2008, Long-term geochemical variability of the Late Cretaceous Tuolumne Intrusive Suite, Central Sierra Nevada, California, Annen, C. and Zelmer, G.F., eds. Dynamics of Crustal Magma Transfer, Storage and Differentiation: Geological Society of London, Special Publication, v. 304, p. 183-202, doi: 10.1144/SP304.10.
Bartley, J.M., Coleman, D.S. and Glazner, A.F., 2008, Incremental emplacement of granitic plutons by magmatic crack-seal: Transactions of the Royal Society of Edinburgh,v. 97, no. 4, p. 383-396.
Glazner. A.F., Coleman, D.S. and Bartley, J.M., 2008, The tenuous connection between high-silica rhyolites and granodiorite plutons. Geology, v. 36, no. 2, p. 183-186, doi: 10.1130/G24496A.1.
Coleman, D.S., Gray, W., and Glazner, A. F., 2004, Rethinking the emplacement and evolution of zoned plutons: geochronologic evidence for incremental assembly of the Tuolumne Intrusive Suite, California: Geology, v. 32 no. 5, p. 433-436, doi: 10.1130/G20220.1.
Glazner, A.F., Bartley, J.M., Coleman, D.S., Gray, W.M. and Taylor, R. Z., 2004, Are plutons assembled over millions of years by amalgamation from small magma chambers?: Geological Society of America Today, v. 14, no. 4/5, p. 4-11, doi: 10.1130/1052-5173(2004)0142.0.CO;2.
Forensic Geology and Geoarchaeology
My students are active in forensic geology and geoarchaeology. Because “you are what you eat” we can exploit the Sr isotopic composition of an individual’s teeth to understand migration history. We use this regularly in the study of ancient populations to explore, for example, slave trade. A new project in collaboration with Dr. Lee Boushell (UNC School of Dentistry) seeks to combine knowledge of tooth mineralization to expand the utility of isotope studies in forensic science. In addition to teeth, we use isotope geochemistry of stone tools, metal artifacts and pottery to unravel trade and exchange networks among ancient civilizations.
Standen, V.G., Valenzuela, D., Monsalve, S., Santoro, C., Arriaza, B. and Coleman, D., 2018, Prehistoric polydactylism: Biological evidence and rock art representation from the Atacama Desert in northern Chile: submitted to International Journal of Paleopathology, v. 22, p. 54-65, doi:10.10163/j-ijpp-2018.05.005.
Standen, V.G., Arriaza, B., Santoro, C.M. and Coleman, D., 2017, Habitation and mobility patterns of Chinchorro populations of the Atacama Desert (9000-3000 BP): Geoarchaeology, doi 10.1002/gea.21594.
Perry, M.A., Coleman, D.S., Dettman, D.L. and al-Shiyab, A.H., 2009, An isotopic perspective on the transport of Byzantine mining camp laborers into southwestern Jordan: American Journal of Physical Anthropology, in press, 18 ms p., 7 figs., 6 tables.
Perry, M. A., Coleman, D. S. and Delhopital, N., 2008, Mobility and exile at 2nd century A.D. Khirbet Edh-Dharih: Strontium isotope analysis of human migration in western Jordan, Geoarchaeology, v. 23, no. 4, p. 524-549.
Goodman, A., Jones, J., Reid, J., Mack, M. Blakey, M., Amarasiriwardena, D., Burton P. and Coleman, D., 2004, Isotopic and elemental chemistry of teeth: Implications for places of birth, forced migration patterns, nutritional status and pollution: in Blakey, M. L. and Rankin-Hill, L. M. (eds.) New York African Burial Ground Skeletal Biology Report, Volume 1, Howard University, Washington, D.C., p. 217-268.
Polymetallic Sulfide and Porphyry Mineralization
Gaynor, S.P., Coleman, D.S, Rosera, J.M. and Tappa, M.J., 2018, Geochronology of a Bouguer gravity low: Journal of Geophysical Research: Solid Earth, v. 124, p. 1-12. 10.1029/2018JB015923.
Gaynor, S., Rosera, J.M. and Coleman, D.S., 2019, Magmatic history of the Questa porphyry Mo deposit: Geosphere, v. 15, p. 1-28, doi: 10.1130 /GES01675.1.
Rosera, J.M., Coleman, D.S. and Stein, H.J., 2013, Re-evaluating genetic models for porphyry Mo mineralization at Questa, New Mexico: Implications for ore deposition following silicic ignimbrite eruption: Geochemistry Geophysics Geosystems, v. 14, p. 787-805, doi:10.1002/ggge.20048
Environmental Isotope Geochemistry
Wang, Z., Dwyer, G,S,, Coleman, D.S. and Vengosh, A., 2019, Lead Isotopes as a New Tracer for Detecting Coal Fly Ash in the Environment: Environmental Science and Technology Letters. doi: 10.1021/acs.eslett.9b00512.
Watts, E.M., Coleman, D.S., Colon-Ramirez, A.M. and Walsh, A.R., 2018, Sources of strontium to the Neuse and Cape Fear river basins, North Carolina: Journal of Geophysical Research: Earth Surface, v. 124, https://doi.org/10.1029/2018JF004797.
Down, A., Schreglmann, K., Plata, D., Elsner, M., Warner, N., Vengosh, A., Moore, K. Coleman, D. and Jackson, R.B., 2015, Pre-drilling background groundwater quality in the Deep River Triassic Basin of central North Carolina, USA, submitted to Applied Geochemistry, v. 60, p. 3-13.
Drew S. Coleman