The Yamato-793605 martian meteorite consortium

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概要

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• We describe the consortium that has been organized to coordinate study of the Yamato-793605 shergottitic peridotite, a 16-g meteorite of presumed martian origin. Y-793605 is similar to two other Antarctic martian meteorites, ALH-77005 and LEW88516. One of the most important goals of the consortium is to determine how the cosmic-ray exposure history of Y-793605 compares with those of ALH-77005 and LEW88516. An aphanitic-glassy shock melted lithology that constitutes, as scattered veins and globby enclaves, roughly 30 vol% of the rock, has also been targeted for particularly intense scrutiny. Consortium results reported in the papers that follow confirm strong similarities between Y-793605 and ALH-77005 and LEW88516,in terms of mineralogy and petrology, trace elements, and cosmic-ray exposure. The mineralogical, petrological, and trace-element similarities are so strong, they suggest that Y-793605,ALH-77005 and LEW88516 formed as cumulates (i.e., mainly large poikilitic pyroxenes enclosing cumulus olivines and chromites) from a single parent magma. The igneous crystallization age of Y-793605 has not yet been precisely determined. However, some important consortium investigations are still underway.

• 国立極地研究所の論文

著者

• KOJIMA Hideyasu

  National Institute of Polar Research

• Warren Paul

  Institute Of Geophysics And Planetary Physics University Of Califonia

• Miyamoto Masamichi

  Mineralogical Institute Graduate School Of Science University Of Tokyo

関連論文

• Yamato-86720: A CM carbonaceous chondrite having experienced extensive aqueous alteration and thermal metamorphism
• A PRELIMINARY REPORT ON THE GEOLOGY OF THE CENTRAL PART OF THE SOR RONDANE MOUNTAINS, EAST ANTARCTICA
• The global accretion rate of extraterrestrial materials in the last glacial period estimated from the abundance of micrometeorites in Antarctic glacier ice
• General characterization of Antarctic micrometeorites collected by the 39th Japanese Antarctic Research Expedition: Consortium studies of JARE AMMs (III)
• META-ULTRAMAFIC ROCK FROM THE AUSTKAMPANE AREA OF THE S∅R RONDANE MOUNTAINS, EAST ANTARCTICA
• MINERAL PARAGENESIS OF THE SAPPHIRINE-BEARING ROCK FROM THE AUSTKAMPANE AREA OF THE S∅R RONDANE MOUNTAINS, EAST ANTARCTICA
• Metamorphic transformations of opaque minerals in some eucrites
• Mineralogy of the Asuka 87 and 88 eucrites and crustal evolution of the HED parent body
• Preliminary report on the Yamato-86032 lunar meteorite: I. Recovery, sample descriptions, mineralogy and petrography
• Preliminary examination of the Yamato-86032 lunar meteorite: II. Major and trace element chemistry
• Rb-Sr age of an impact event recorded in Yamato-791088 H chondrite
• Thermoluminescence studies of ordinary chondrites in the Japanese Antarctic meteorite collection, IV: Asuka ordinary chondrites
• Thermoluminescence studies of ordinary chondrites in the Japanese Antarctic meteorite collection, III: Asuka and Yamato type 3
• Thermoluminescence studies of ordinary chondrites in the Japanese Antarctic meteorite collection, II: New measurements for thirty type 3 ordinary chondrites
• Yamato-791093, a metal-sulfide-enriched H-group chondritic meteorite transitional to primitive IIE irons with silicate inclusions
• Mineralogy of Antarctic aubrites, Yamato-793592 and Allan Hills-78113: Comparison with non-Antarctic aubrites and E-chondrites
• Diffraction profile analysis of olivines in thin sections of meteorites by the micro-region Laue method using synchrotron radiation
• Consortium reports of lunar meteorite Yamato-793274
• Weathering of some Antarctic meteorites: Infrared spectroscopy
• Mineralogical study of angrite Asuka-881371: Its possible relation to angrite LEW87051
• The alteration of chondrules and matrices in new Antarctic carbonaceous chondrites
• Yamato-82162: A new kind of CI carbonaceous chondrite found in Antarctica
• Modal mineral abundances and the differentiation trends in primitive achondrites
• Varieties of lunar meteorites recovered from Antarctica
• The classification and reconnaisance petrography o of basaltic achondrites from the Yamato 1979 collection including pigeonite cumulate eucrites,a new group
• A preliminary study of REE abundances in chondrules, an inclusion and mineral fragments from Yamato-793321 (CM2) chondrite
• Thermoluminescence of Japanese Antarctic ordinary chondrite collection
• Infrared diffuse reflectance spectra of weathered and unweathered CR2 chondrites: Comparison with asteroids
• A Brachina-like inclusion in the Yamato-75097 L6 chondrite: A preliminary examination
• Geology and geologic structure of the northern Ongul Islands and surroundings, East Antarctica
• Evaluation of diffusion coefficients of Fe-Mg and Ca in olivine
• Mineralogical comparison of Hammadah al Hamra 126 with some ureilites
• Yamato-793605: A new lherzolitic shergottite from the Japanese Antarctic meteorite collection
• Cooling rates of olivine xenocrysts in the EET79001 shergottite
• Chemical zoning of olivines in the Yamato-791717 CO3 chondrite
• Diffuse reflectance spectra for heated samples of an H5 chondrite: Importance of oxygen fugacity at heating
• Magnetic properties and natural remanent magnetization of carbonaceous chondrites containing pyrrhotite
• Micro raman spectroscopy of diamonds in the Canyon Diablo iron meteorite: Implication for shock origin
• Comparisons of textural and chemical variations of minerals in some primitive achondrites and an H7 chondrite, with reference to their formation and cooling histories
• Lherzolitic Martian meteorites Allan Hills 77005, Lewis Cliff 88516 and Yamato-793605: Major and minor element zoning in pyroxene and plagioclase glass
• The variation of Zn content in spinel group minerals and daubreelites of primitive achondrites
• The Yamato-793605 martian meteorite consortium
• TRACE ELEMENT CHARACTERISTICS OF METAMORPHIC AND PLUTONIC ROCKS FROM THE BELGICA MOUNTAINS, EAST ANTARCTICA
• Amphibolite-facies mineral assemblages in the Belgica Mountains, East Antarctica
• Geology of the Belgica Mountains
• Geology of Honnor Oku-iwa Rock, East Antarctica
• Geology of Kasumi Rock, East Antarctica
• PETROLOGY OF DOLOMITIC MARBLES FROM KASUMI ROCK, PRINCE OLAV COAST, EAST ANTARCTICA
• A classification of several Yamato-75 chondrites (V)
• Terrestrial alteration of Fe-Ni metals in Antarctic ordinary chondrites and the relationship to their terrestrial ages
• The collection of micrometeorites in the Yamato Meteorite Ice Field of Antarctica in 1998
• The Asuka-90 meteorites collection from Antarctica: Searching, initial processing and preliminary identification
• Meteorite search by JARE-39 in 1998-99 season
• Yamato-791197: A lunar meteorite in the Japanese collection of Antarctic meteorites
• Geochemical investigation of five lunar meteorites : Implications for the composition, origin and evolution of the lunar crust
• Geochemical investigation of two lunar mare meteorites: Yamato-793169: and Asuka-881757
• Geochemistry of lunar meteorite Yamato-82192: comparison with Yamato-791197, ALHA81005, and other lunar samples
• Yamato-793605, EET79001, and other presumed martian meteorites: Compositional clues to their origins
• Origin of metal-troilite aggregates in six ordinary chondrites
• The Asuka-87 and Asuka-88 collections of Antarctic meteorites: Search, discoveries, initial processing, and preliminary identification and classification
• Yamato-74063: Chondritic meteorite classified between E and H chondrite groups
• Yamato-8451: A newly identified pyroxene-bearing pallasite
• Geochemistry of lunar meteorite Yamato-791197: Comparison with ALHA81005 and other lunar samples
• The global accretion rate of extraterrestrial materials in the last glacial period estimated from the abundance of micrometeorites in Antarctic glacier ice

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