Search Results - "Delano, J. W"

Apollo 17 regolith, 71501,262: A record of impact events and mare volcanism in lunar glasses by ZELLNER, N. E. B., DELANO, J. W., SWINDLE, T. D., BARRA, F., OLSEN, E., WHITTET, D. C. B.

“…— Thirteen glasses from Apollo 17 regolith 71501,262 have been chemically analyzed by electron microprobe and isotopically dated with the 40Ar/39Ar dating…”
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An integrated approach to understanding Apollo 16 impact glasses: Chemistry, isotopes, and shape by DELANO, J. W., ZELLNER, N. E. B., BARRA, F., OLSON, E., SWINDLE, T. D., TIBBETTS, N. J., WHITTET, D. C. B.

“…The major‐ and minor‐element abundances were determined by electron microprobe in 1039 glasses from regoliths and regolith breccias to define the compositional…”
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Impact glasses from the Apollo 14 landing site and implications for regional geology by Zellner, N. E. B., Spudis, P. D., Delano, J. W., Whittet, D. C. B.

“…Lunar impact glasses possess the unmodified refractory element ratios of the original fused target materials at the sites of impacts. These target materials…”
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Origin of lunar ultramafic green glasses: constraints from phase equilibrium studies by Elkins, L.T, Fernandes, V.A, Delano, J.W, Grove, T.L

“…Phase equilibria experiments on an Apollo 14B green glass composition are used to develop a petrogenetic model for the Apollo 14B green glasses. New…”
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Evidence from (40)Ar/(39)Ar ages of lunar impact glasses for an increase in the impact rate [not, vert, similar]800 Ma ago by Zellner, N.E.B., Delano, J W, Swindle, T D, Barra, F, Olsen, E, Whittet, D.C.B.

“…Geochemical and (40)Ar/(39)Ar data on nine impact glasses from the Apollo 14, 16, and 17 landing sites indicate at least seven distinct impact events with ages…”
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K-Bentonites and Graptolite Biostratigraphy in the Middle Ordovician of New York State and Quebec: A New Chronostratigraphic Model by Goldman, Daniel, Mitchell, Charles E., Bergström, Stig M., Delano, John W., Tice, Steven

“…Published correlations of the extensive set of altered volcanic ash beds (K-bentonites) present in the upper Middle Ordovician rocks of New York State imply…”
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Discovery of the Ordovician Millbrig K-bentonite Bed in the Trenton Group of New York State: implications for regional correlation and sequence stratigraphy in eastern North America by Mitchell, Charles E, Adhya, Soumava, Bergström, Stig M, Joy, Michael P, Delano, John W

“…The Ordovician (Chatfieldian) Millbrig K-bentonite Bed is a key stratigraphic marker horizon that is regionally synchronous over much of eastern and central…”
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40Ar/39Ar ages of lunar impact glasses: Relationships among Ar diffusivity, chemical composition, shape, and size by Zellner, N.E.B., Delano, J.W.

“…Lunar impact glasses, which are quenched melts produced during cratering events on the Moon, have the potential to provide not only compositional information…”
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Magmatic compositions and source terranes estimated from melt inclusions in detrital Cr-rich spinels: An example from mid-Cretaceous sandstones in the eastern Tethys Himalaya by Zhu, Bin, Delano, John W., Kidd, William S.F.

“…Cr-rich spinel is a detrital component within turbidites from the well-exposed, mid-Late Cretaceous Tianba Formation sequence in the Nieru Valley, southern…”
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Implications for the primitive atmosphere of the oxidation state of Earth's upper mantle by Arculus, R. J, Delano, J. W

“…The oxidation states of materials in the earth's mantle are investigated in order to provide constraints on the composition of the primitive earth atmosphere…”
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40Ar/39Ar ages of lunar impact glasses: Relationships among Ar diffusivity, chemical composition, shape, and size by Zellner, N. E. B, Delano, J. W

“…Geochimica et Cosmochimica Acta (2015) 161:203-218 Lunar impact glasses, quenched melts produced during cratering events on the Moon, have the potential to…”
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40Ar/39Ar and cosmic ray exposure ages of plagioclase-rich lithic fragments from Apollo 17 regolith, 78461 by Das, J. P., Baldwin, S. L., Delano, J. W.

“…Argon isotopic data is used to assess the potential of low-mass samples collected by sample return missions on planetary objects (e.g., Moon, Mars, asteroids),…”
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Electrochemical measurements bearing on the oxidation state of the Skaergaard Layered Intrusion by KERSTING, A. B, ARCULUS, R. J, DELANO, J. W, LOUREIRO, D

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sup 40^Ar/^sup 39^Ar and cosmic ray exposure ages of plagioclase-rich lithic fragments from Apollo 17 regolith, 78461 by Das, J P, Baldwin, S L, Delano, J W

“…Argon isotopic data is used to assess the potential of low-mass samples collected by sample return missions on planetary objects (e.g., Moon, Mars, asteroids),…”
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Evidence from super(40)Ar/ super(39)Ar ages of lunar impact glasses for an increase in the impact rate [not, vert, similar]800 Ma ago by Zellner, NEB, Delano, J W, Swindle, T D, Barra, F, Olsen, E, Whittet, DCB

“…Geochemical and super(40)Ar/ super(39)Ar data on nine impact glasses from the Apollo 14, 16, and 17 landing sites indicate at least seven distinct impact…”
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RNA, a Precursor to the Origin of Life by Ferris, J P, Joshi, P C, Aldersley, M F, Delano, J W

“…The RNA world is believed to be the most likely precursor to the origins to life on Earth (1). We observed initially that montmorillonite clay-catalyzed the…”
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Petrology and Geochemistry of Ordovician K-Bentonites in New York State: Constraints on the Nature of a Volcanic Arc by Delano, J. W., Schirnick, C., Bock, B., Kidd, W. S. F., Heizler, M. T., Putman, G. W., De Long, S. E., Ohr, M.

“…Altered volcanic ashes (K-bentonites) in the late Ordovician (Caradocian) Utica shale of New York State are the product of explosive arc volcanism. Most of the…”
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Impact glasses from the Apollo 14 landing site and implications for regional geology by Zellner, N E B, Spudis, P D, Delano, J W, Whittet, D C B

“…Lunar impact glasses possess the unmodified refractory element ratios of the original fused target materials at the sites of impacts. These target materials…”
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Redox history of the Earth's interior since approximately 3900 Ma: implications for prebiotic molecules by Delano, J W

“…The history of the oxidation state in the Earth's mantle has been constrained using (a) the whole-rock abundances of Cr and V in ancient volcanics, and (b) the…”
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Impact glasses from the Apollo 14 landing site and implications for regional geology by ZELLNER, N. E. B, SPUDIS, P. D, DELANO, J. W, WHITTET, D. C. B

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