Search Results - "Bowring, S."

Initial pulse of Siberian Traps sills as the trigger of the end-Permian mass extinction by Burgess, S. D., Muirhead, J. D., Bowring, S. A.

“…Mass extinction events are short-lived and characterized by catastrophic biosphere collapse and subsequent reorganization. Their abrupt nature necessitates a…”
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High-precision geochronology links the Ferrar large igneous province with early-Jurassic ocean anoxia and biotic crisis by Burgess, S.D., Bowring, S.A., Fleming, T.H., Elliot, D.H.

“…Apparent synchrony between eruption/emplacement of large igneous province (LIP) magmas and mass extinction has led to the implication of magmatism as a primary…”
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U/Pb Zircon Geochronology and Tempo of the End-Permian Mass Extinction by Bowring, S. A., Erwin, D. H., Jin, Y. G., Martin, M. W., Davidek, K., Wang, W.

“…The mass extinction at the end of the Permian was the most profound in the history of life. Fundamental to understanding its cause is determining the tempo and…”
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The role of an H2O-rich fluid component in the generation of primitive basaltic andesites and andesites from the Mt. Shasta region, N California by Grove, T., Parman, S., Bowring, S., Price, R., Baker, M.

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Age of Neoproterozoic Bilatarian Body and Trace Fossils, White Sea, Russia: Implications for Metazoan Evolution by Martin, M. W., Grazhdankin, D. V., Bowring, S. A., Evans, D. A. D., Fedonkin, M. A., Kirschvink, J. L.

“…A uranium-lead zircon age for a volcanic ash interstratified with fossil-bearing, shallow marine siliciclastic rocks in the Zimnie Gory section of the White…”
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Timescales and significance of high-pressure, high-temperature metamorphism and mafic dike anatexis, Snowbird tectonic zone, Canada by Flowers, R. M., Bowring, S. A., Williams, M. L.

“…New geochronological, isotopic and geochemical data for a spectacular swarm of deep crustal migmatitic mafic dikes offer important insight into processes…”
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Applying the concept of "energy return on investment" to desert greening of the Sahara/Sahel using a global climate model by Bowring, S. P. K, Miller, L. M, Ganzeveld, L, Kleidon, A

“…Altering the large-scale dynamics of the Earth system through continual and deliberate human intervention now seems possible. In doing so, one should question…”
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Age and Provenance of the Beardmore Group, Antarctica: Constraints on Rodinia Supercontinent Breakup by Goodge, J. W., Myrow, P., Williams, I. S., Bowring, S. A.

“…New U‐Pb ages for detrital and igneous zircons constrain the depositional age and sedimentary provenance of the Beardmore Group, a siliciclastic succession…”
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Pb and Sr concentrations and isotopic compositions in prehistoric North American teeth: A methodological study by Dudás, F.Ö., LeBlanc, S.A., Carter, S.W., Bowring, S.A.

“…We present Pb and Sr isotopic compositions and elemental concentrations for dentin and enamel from 28 human teeth from 10 locations in the southwestern United…”
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The Earth's Early Evolution by Bowring, Samuel A., Housh, Todd

“…The Archean crust contains direct geochemical information of the Earth's early planetary differentiation. A major outstanding question in the Earth sciences is…”
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Petrological and geochronological constraints on high pressure, high temperature metamorphism in the Snowbird tectonic zone, Canada by Baldwin, J. A., Bowring, S. A., Williams, M. L.

“…The upper deck of the East Athabasca mylonite triangle (EAmt), northern Saskatchewan, Canada, contains mafic granulites that have undergone high P–T…”
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Multi-stage exhumation of young UHP–HP rocks: Timescales of melt crystallization in the D’Entrecasteaux Islands, southeastern Papua New Guinea by Gordon, S.M., Little, T.A., Hacker, B.R., Bowring, S.A., Korchinski, M., Baldwin, S.L., Kylander-Clark, A.R.C.

“…On the D’Entrecasteaux Islands, southeastern Papua New Guinea (PNG), a series of domes expose the youngest known ultrahigh-pressure (UHP) to high-pressure…”
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Geochronological constraints on the Legs Lake shear zone with implications for regional exhumation of lower continental crust, western Churchill Province, Canadian Shield by Mahan, K. H., Williams, M. L., Flowers, R. M., Jercinovic, M. J., Baldwin, J. A., Bowring, S. A.

“…The Legs Lake shear zone marks the southeastern boundary of an extensive region (>20,000 km2) of high-pressure (0.8-1.5+ GPa) granulite-facies rocks in the…”
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Metamorphism, Melting, and Extension: Age Constraints from the High Himalayan Slab of Southeast Zanskar and Northwest Lahaul by Walker, J. D., Martin, M. W., Bowring, S. A., Searle, M. P., Waters, D. J., Hodges, K. V.

“…We present evidence for two distinct stages of Tertiary metamorphism (M1and M2) in the High Himalayan Slab of southeast Zanskar and northwest Lahaul, as well…”
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Pleistocene melting and rapid exhumation of the Nanga Parbat massif, Pakistan: Age and P– T conditions of accessory mineral growth in migmatite and leucogranite by Crowley, J.L., Waters, D.J., Searle, M.P., Bowring, S.A.

“…Rapid Pleistocene exhumation of the core of the Nanga Parbat massif (northwestern Himalayan syntaxis) is inferred by combining U-Pb dates from monazite,…”
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Subduction and terrane collision stabilize the western Kaapvaal craton tectosphere 2.9 billion years ago by Schmitz, Mark D, Bowring, Samuel A, de Wit, Maarten J, Gartz, Volker

“…Integrative models of crust and mantle structure, age, and growth of the oldest continental nuclei;the Archean cratons;are critical to understanding the…”
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Chuar Group of the Grand Canyon: record of breakup of Rodinia, associated change in the global carbon cycle, and ecosystem expansion by 740 Ma by Karlstrom, K E, Bowring, S A, Dehler, C M, Knoll, A H, Porter, S M, Des Marais, D J, Weil, A B, Sharp, Z D, Geissman, J W, Elrick, M B, Timmons, J M, Crossey, L J, Davidek, K L

“…The Chuar Group (approximately 1600 m thick) preserves a record of extensional tectonism, ocean-chemistry fluctuations, and biological diversification during…”
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Evaluation of Duluth Complex anorthositic series (AS3) zircon as a U-Pb geochronological standard: new high-precision isotope dilution thermal ionization mass spectrometry results by Schmitz, Mark D, Bowring, Samuel A, Ireland, Trevor R

“…U-Pb zircon geochronology is increasingly called upon to achieve the resolution of absolute time at the 0.1% to 1% level for rocks of Phanerozoic to Hadean…”
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Multistage exhumation and juxtaposition of lower continental crust in the western Canadian Shield: Linking high-resolution U-Pb and 40Ar/39Ar thermochronometry with pressure-temperature-deformation paths by Flowers, R. M., Mahan, K. H., Bowring, S. A., Williams, M. L., Pringle, M. S., Hodges, K. V.

“…New U‐Pb (titanite, apatite, rutile) and 40Ar/39Ar (hornblende, muscovite, biotite) data are linked with existing pressure‐temperature‐deformation paths to…”
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Biostratigraphic and Geochronologic Constraints on Early Animal Evolution by Grotzinger, John P., Bowring, Samuel A., Saylor, Beverly Z., Kaufman, Alan J.

“…Two distinct evolutionary pulses, represented by the Vendian Ediacaran fauna and Cambrian small shelly faunas, are generally thought to characterize the…”
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