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Thursday, May 7, 2020 | History

4 edition of Experimental constraints on the origin of lunar high-Ti ultramafic glasses found in the catalog.

Experimental constraints on the origin of lunar high-Ti ultramafic glasses

Experimental constraints on the origin of lunar high-Ti ultramafic glasses

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Published by National Aeronautics and Space Administration, National Technical Information Service, distributor in [Washington, DC, Springfield, Va .
Written in English

    Subjects:
  • Titanium,
  • Ilmenite,
  • Glass,
  • Magma,
  • Crystallization,
  • Liquidus,
  • Mineralogy

  • Edition Notes

    StatementT.P. Wagner and T.L. Grove.
    Series[NASA contractor report] -- 207385., NASA contractor report -- NASA CR-207385.
    ContributionsGrove, T. L., United States. National Aeronautics and Space Administration.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL17583555M
    OCLC/WorldCa42062782

    Kamei A., Obata M., Michibayashi K., Hirajima T. & Svojtka M. (): Two Contrasting Fabric Patterns of Olivine Observed in Garnet and Spinel Peridotite from a Mantle-derived Ultramafic Mass Enclosed in Felsic Granulite, the Moldanubian Zone, Czech Republic. – Journal of Petrology, 51, 1–2: 1– On January 1, the Academy of Sciences of the Czech Republic was established by the transformation from the ČSAV, and the Geological Institute became a part of the ASCR. The Institute belongs to the I. Department of Mathematics, Physics and Earth Sciences and to the 3rd Section of Earth Sciences.

      Comprehensive Pb-Sr-Nd-Hf isotopic, trace element, and mineralogical characterization of mafic to ultramafic rock reference materials. NASA . The Sheahan Diamond Literature Reference Compilation; The Sheahan Diamond Literature Reference Compilation is compiled by Patricia Sheahan. who publishes on a monthly basis a list of new scientific articles related to diamonds as well as media coverage and corporate announcementscalled the Sheahan Diamond Literature Service that is distributed as a free pdf .

    Rock Physics and Phase - Free ebook download as PDF File .pdf), Text File .txt) or read book online for free. to control the origin of mafic-ultramafic rocks in the crust. Therefore, if the proposed petrogenetic models are on the right track, the geochemistry of Ca and Mg and other chemical elements (e.g. Fe) might well need revising. The contribution of the geophysical data is also important in deducing the chemical composition of the upper mantle.


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Experimental constraints on the origin of lunar high-Ti ultramafic glasses Download PDF EPUB FB2

Experimental constraints on the origin of lunar high-Ti ultramafic glasses T. WAGNER and T. GROVE Department of Earth, Atmospheric, and Planetary Science, Massachusetts Institute of Technology, Cambridge, MassachusettsUSA (Received Febru ; accepted in revised form Novem ). Herein, we critically reevaluate the assimilation model for the formation of lunar high-Ti magmas by modeling the major element chemical variation observed in the lunar ultramafic glasses.

These ultramafic glasses are most similar to high-Mg mare basalts (e.g., Ridley et al., ), but have consistently higher Mg, Ni and molar Mg/(Mg + Fe) and Cited by: Experimental Constraints on the Origin of Lunar High-Ti Ultramafic Glasses: Phase equilibria and dissolution rate experiments are used to develop a petrogenetic model for the high-Ti lunar ultramafic glasses.

Near-liquidus phase relations of the Apollo 14 black glass, the most Ti-rich lunar ultramafic glass, are determined to GPa. Get this from a library. Experimental constraints on the origin of lunar high-Ti ultramafic glasses. [T P Wagner; T L Grove; United States. National Aeronautics and Space Administration.].

Two new hypotheses for the origin of the lunar high-Ti ultramafic glasses are considered in this study. These new models are motivated by experimental results on a model hybridized lunar magma ocean cumulate composition and by the failure of current models to adequately account for the processes that lead to the origin of these unique lunar ultramafic by: 8.

Two new hypotheses for the origin of the lunar high-Ti ultramafic glasses are considered in this study. These new models are motivated by experimental results on a model hybridized lunar magma ocean cumulate composition and by the failure of current models to adequately account for the processes that lead to the origin of these unique lunar ultramafic.

TY - JOUR. T1 - Origin of lunar ultramafic green glasses. T2 - Constraints from phase equilibrium studies. AU - Elkins, L. AU - Fernandes, V. by: Origin of lunar ultramafic green glasses: Constraints from phase equilibrium studies Article in Geochimica et Cosmochimica Acta 54(13).

T.P. Wagner, T.L. Grove: Experimental constraints on the origin of lunar high-Ti ultramafic glasses, Geochim. Cosmochim. A – () CrossRef Google Scholar. We infer that high-Ti ultramafic magmas are derived from low-Ti ultramafic parent magmas by assimilation of ilmenite ± clinopyroxene ± urKREEP ± pigeonite in the shallow lunar interior.

magma ocean thatsolidified early in lunar history (Solomon andLonghi,;Warren,;Snyderetal.,).Exper-imental studies of these glasses, together with the high-Ti mare basalt suite, are a prerequisite for understanding the natureoftheirmeltingprocesses,sourcematerials,anddepth of origin in the lunar mantle.

Lunar high-titanium (HiTi) ultramafic glasses provide us with evidence of the mantle processes that led to the melting of the lunar magma ocean cumulates nearly one billion years after the magma ocean solidified.

Constraints on the depth, temperature and melting processes that formed the HiTi glasses are crucial for understanding the melting. Tungsten isotopic constraints on the origin and evolution of the Moon Book Kruijer, Thomas S.

; Kleine, Thorsten Here we report the Moon most likely formed as the result of a collision between the proto-Earth and a differentiated body possibly the size of Mars (Cameron and Benz, ; Hartmann and Davis, ).Author: Walker, D. [] *Thy, P., and G. Lofgren, Experimental constraints on the low‐pressure evolution of transitional and mildly alkalic basalts: The effect of Fe‐Ti oxide minerals and the origin of basaltic andesites, Contrib.

by: Treiman et al. investigate the origin of magnesium aluminate spinel, (Mg,Fe)Al 2 O 4, in lunar anorthositic rocks Although uncommon, recent near-infrared spectra of the Moon have delineated regions where spinel is the only ferromagnesian mineral, and the rock is inferred to be spinel anorthosite.

The authors consider multiple alternative. Publications: (Note: Publications marked by * are extended page abstracts. Not listed are some regular abstracts, published in various scientific journals, proceedings of meetings, etc.).

For high-Ti glasses, such a relationship has been interpreted by Saal et al. as reflecting kinetic degassing of H 2 followed by OH-dominated diffusion at later stages in a low-pressure environment after fragmentation of the magma.

In glasses with more than 10 ppm water, low- to very-low-Ti glasses display heavier D/H ratios than high-Ti by:   1. Introduction. The origin of the Moon remains a subject of considerable debate, as evidenced by emergence of several new ideas [1,2] as well as refinements of previously proposed models [3,4].However, regardless of which model is more applicable to the lunar origin, one common feature appears to be processing of the Moon-forming material in a magma disc Cited by: Early studies concluded that the Ir contents of picritic high-Ti orange and low-Ti green glasses were only offset from the terrestrial array by a factor of 2 to 4 (Ganapathy et al.

; Morgan and Wandless ; Righter et al. ), leading some authors to conclude that the abundances of HSE in the lunar mantle sampled by the picritic glasses Cited by: This banner text can have markup.

web; books; video; audio; software; images; Toggle navigation. During the period tothe large number of papers, books, and monographs published on the petrology and geochemistry of igneous rocks reflects the vitality and continued growth of this central earth science discipline.

While an attempt has been made to prepare a reasonably complete bibliography, the accompanying text, of necessity, reflects a subjective selection of .A new lunar high-Ti basalt type defined from clasts in Apollo 16 breccia Geochimica et Cosmochimica Acta, / Kring, D.A.

[1] Gamma ray spectroscopy data acquired by Lunar Prospector are used to determine global maps of the elemental composition of the lunar surface. Maps of the abundance of major oxides, MgO, Al 2 O 3, SiO 2, CaO, TiO 2, and FeO, and trace incompatible elements, K and Th, are presented along with their geochemical spectral mixing is used to model Cited by: