40Ar-39Ar analyses of Yamato-75097 (L6) chondrite from Antarctica
スポンサーリンク
概要
- 論文の詳細を見る
^<40>Ar-^<39>Ar analyses were performed on the host phase of an H-clast bearing chondrite Yamato-75097 (L6). The result indicates a typical U-shaped age spectrum, suggesting that the serious degassing event occurred at about 490Ma or slightly younger age for this meteorite. Since the meteorite shows a sign of shock, this event might have been a collisional event. It is estimated that more than 99% of radiogenic ^<40>Ar was degassed during this event. For this degassing, it requires prolonged time of at least a few hours even at 1200℃, and a longer time is required if the ambient temperature is lower and the diffusion mainly controls the degassing process.
- 国立極地研究所の論文
著者
-
Kaneoka Ichiro
Earthquake Research Institute, University of Tokyo
-
Kaneoka Ichiro
Earthquake Research Institute University Of Tokyo
-
Yanai Keizo
National Institute of Polar Research
-
Takaoka Nonuo
Department of Earth Sciences, Faculty of Science, Yamagata University
-
Takaoka Nonuo
Department Of Earth Sciences Faculty Of Science Yamagata University
-
Kaneoka Ichiro
Earthquake Research Institute The University Of Tokyo
関連論文
- 40Ar-39Ar analyses of a lumar meteorite (Yamato-86032) and a few LL3 and LL4 chondrites from Antarctica
- Yamato-86720: A CM carbonaceous chondrite having experienced extensive aqueous alteration and thermal metamorphism
- Origin and Evolution of Condrules Based on Na/Al-Dispersion and -Convergence in Yamato-74 Ordinary Chondrites
- Antarctic howardites and their primitive crust
- Mineralogy of the Yamato diogenites as possible pieces of a single fall
- Mineralogical Examination of the Allan Hills Achondrites and Their Bearing on the Parent Bodies
- A Classification for Some Small Chondrites in the Yamato-74 and -75 Meteorites
- Some Unique Meteorites Found in Antarctica and Their Relation to Asteroids
- Mineralogical Examination of the Yamato-75 Achondrites and Their Layered Crust Model
- A Classification of the Yamato-75 Chondrites Based on Chemical Compositions of Olivines and Pyroxenes
- Mineralogical Examination of the Allan Hills No.5 Meteorite
- Yamato Achondrite Polymict Breccias
- A Preliminary Mineralogical Examination of the Yamato-74 Achondrites
- A Classification for the Yamato-74 Chondrites Based on the Chemical Composition of their Olivines and Pyroxenes
- Chemical compositions of Antarctic meteorites I
- Preliminary report on the Yamato-86032 lunar meteorite: I. Recovery, sample descriptions, mineralogy and petrography
- AGE AND PALEOMAGNETIC STUDIES FOR INTRUSIVE AND METAMORPHIC ROCKS FROM THE SOR RONDANE MOUNTAINS, ANTARCTICA
- Rb-Sr age of an impact event recorded in Yamato-791088 H chondrite
- Amino Acids in the Yamato-74662 Meteorite, an Antarctic Carbonaceous Chondrite
- Mineralogy of Antarctic aubrites, Yamato-793592 and Allan Hills-78113: Comparison with non-Antarctic aubrites and E-chondrites
- AMS 14C ages of Yamato achondritic meteorites
- 40Ar-39Ar analyses of Y-74063 and ALH-78230: Consortium study onunique meteorites from Antarctica
- 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
- Rb-Sr whole-rock ages of metamorphic rocks from eastern Queen Maud Land, East Antarctica
- Rb-Sr mineral isochron ages of metamorphic rocks around Syowa Station and from the Yamato Mountains, East Antarctica
- Construction of I-Xe and ^Ar-^Ar Dating System Using a Modified VG3600 Mass Spectrometer and the First I-Xe Data Obtained in Japan
- The alteration of chondrules and matrices in new Antarctic carbonaceous chondrites
- A preliminary classification of Yamato-74, -75 chondrites from Antarctica
- A Preliminary Classification of Yamato Chondrites with Reference to Metal-Sulfide Equilibrium
- Yamato-82162: A new kind of CI carbonaceous chondrite found in Antarctica
- Varieties of lunar meteorites recovered from Antarctica
- Oxygen Isotopes in Several Yamato Meteorites
- K-Ar Dating of Volcanic Rocks Dredged from the Yamato Seamount Chain in the Japan Sea
- The classification and reconnaisance petrography o of basaltic achondrites from the Yamato 1979 collection including pigeonite cumulate eucrites,a new group
- On the relationships between the ^Ar-^Ar dating results and the conditions of basaltic samples
- ^Ar-^Ar Dating : Investigation of some Technical Problems and its Application to the Deccan Trap Rocks and a Unique Meteorite from Antarctica
- Yamato-74662 Meteorite: A Carbonaceous Chondrite Type II
- K-Ar Ages of the Neogene Submarine Volcanic Rocks and Overlying Quaternary subaerial Lavas from the Mt. Karibayama Area, Southwest Hokkaido
- Oxygen isotopic compositions of petrographically described inclusions from Antarctic unequilibrated ordinary chondrites
- Intergranular trace elements in mantle xenoliths from Russian Far East : Example for mantle metasomatism by hydrous melt
- 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
- Oxygen isotopic compositions of several Antarctic meteorites
- Oxygen isotopic compositions of some Yamato meteorites
- Geochemistry of Quaternary basalts from the Yatsugatake volcano, central Japan : Generation of an unusually deep Wadati-Benioff zone beneath the volcanic front by double-overlapping subduction
- Sm-Nd AND Rb-Sr ISOCHRON AGES FOR META-TRONDHJEMITES FROM CAPE HINODE, EAST ANTARCTICA
- 40Ar-39Ar analysis of phlogopite in the Horoman Peridotite Complex, Hokkaido, Japan and implications for its origin
- U-Th-Pb isotopic systematics of lunar meteorite Asuka-31
- The active period of the Ayu Trough estimated from K-Ar ages: the southeastern spreading center of Philippine Sea Plate
- Mode of occurrence, bulk chemical compositions, and mineral textures of ultramafic rocks in the Lutzow-Holm Complex, East Antarctica
- Aluminum silicates in the Prince Olav and Soya Coasts, East Antarctica
- 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
- Metamorphic rocks of the Cape Hinode district, East Antarctica
- Major Element Chemistry of Metamorphic Rocks of the Cape Hinode District, East Antarctica
- Geology of several islands of the west of Langhovde, East Antarctica
- The Asuka-90 meteorites collection from Antarctica: Searching, initial processing and preliminary identification
- The Asuka-87 and Asuka-88 collections of Antarctic meteorites: Preliminary examination with brief descriptions of some typical and unique-unusual specimens
- Foreword
- 40Ar-39Ar analyses of Yamato-75097 (L6) chondrite from Antarctica
- A review of the Yamato-80, -81 and -82 meteorite collections
- Yamato-793592: The first enstatite achondrite (aubrite) in the Yamatometeorite collections
- K-Ar Ages of Volcanic Rocks of Daruma and Ida Volcanoes in the Izu Peninsula, Central Japan
- ^Ar-^Ar Dating of Terrestrial and Exterrestrial Materials : Basalts from the Japan Sea Floor, Deccan Plateau and Meteorites from Antarctica
- Yamato-791197: A lunar meteorite in the Japanese collection of Antarctic meteorites
- Geology and Geologic Structure of the Langhovde and Skarvsnes Regions, East Antarctica
- Chemical Characteristics of Biotites and Hornblendes from Metamorphic Rocks around Lutzow-Holmbukta, East Antarctica
- 40Ar-39Ar analyses of Juvinas fragments
- Investigation of dust bands from blue ice fields in the Lewis Cliff (Beardmore) area, Antarctica: A progress report
- The Asuka-87 and Asuka-88 collections of Antarctic meteorites: Search, discoveries, initial processing, and preliminary identification and classification
- A preliminary processing of Yamato-79 meteorites
- On the degassing state and the chemical structure of the Earth's interior inferred from noble gas isotopes : Past and recent views
- A review of the Yamato-74 meteorite collection
- Yamato-74063: Chondritic meteorite classified between E and H chondrite groups
- Yamato-8451: A newly identified pyroxene-bearing pallasite
- Yamato-74 Meteorites Collection, Antarctica from November to December 1974
- Meteorites from Antarctica (Extended Abstract)
- First Meteorites Found in Victoria Land, Antarctica, December 1976 and January 1977-Report of the U.S.-Japan Joint Program Titled "Antarctic Search for Meteorites"1976-1977-
- Mineralogical examination of the Yamato-79 achondrites : Polymict eucrites and ureilites
- Total Carbon and Sulfur Abundances in Antarctic Meteorites
- Sr and Nd isotope ratios and trace element concentrations in kimberlites from Shandong and Liaoning (China) and the Kimberley area (South Africa)
- Meteorite Search in Victoria Land, Antarctica in 1977-1978 Austral Summer
- Magmatic processes revealed by noble gas signatures : the case of Unzen Volcano, Japan
- Collection of Yamato meteorites in the 1979-1980 field season, Antarctica
- Foreword
- Significance of He-Pb Isotope Systematics in Earth Sciences (〔希ガスの質量分析に関する特集〕)
- Noble gas degassing from meteorites as inferred from 40Ar-39Ar analytical data
- Angrite Asuka-881371: Preliminary examination of a unique meteorite in the Japanese collection of Antarctic meteorites