Výsledky vyhledávání - "Ekaterina V. Korochantseva"

The lunar Dhofar 1436 meteorite: 40Ar‐39Ar chronology and volatiles, revealed by stepwise combustion and crushing methods

Autor: A. V. Korochantsev, A. I. Buikin, Jens Hopp, A. B. Verchovsky, Ekaterina V. Korochantseva, Mahesh Anand, Mario Trieloff

The lunar meteorite Dhofar 1436 is dominated by solar wind type noble gases. Solar argon is equilibrated with “parentless” 40Ar commonly known as lunar orphan argon. Ar‐Ar isochron analyses determined the lunar trapped 40Ar/36Ar ratio to 2.51 �

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f0f0432b1129b6ee9805ba4f5db486fc

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Sierra Gorda 009: A new member of the metal‐rich G chondrites grouplet

Autor: Catherine M. Corrigan, Mario Trieloff, Vladimir V. Kozlov, Cyril A. Lorenz, Thomas Ludwig, A. B. Verchovsky, A. V. Korochantsev, Munir Humayun, Svetlana N. Teplyakova, Kevin Righter, V. I. Grokhovsky, Ekaterina V. Korochantseva, Ian A. Franchi, Marina A. Ivanova

Publikováno v: Meteoritics & Planetary Science. 55

We investigated the metal‐rich chondrite Sierra Gorda (SG) 009, a member of the new G chondrite grouplet (also including NWA 5492, GRO 95551). G chondrites contain 23% metal, very reduced silicates, and rare oxidized mineral phases (Mg‐chromite,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f8dce7b852dbb25687857ce56457dada
https://doi.org/10.1111/maps.13546

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Noble Gases, Nitrogen and Carbon Isotopic Compositions of the Ghubara Meteorite, Revealed by Stepwise Combustion and Crushing Methods

Autor: Ekaterina V. Korochantseva, A. V. Korochantsev, A. I. Buikin, C. A. Lorenz, A. B. Verchovsky

Publikováno v: Geochemistry International. 56:1384-1397

The Ghubara meteorite contains abundant trapped gases in voids of highly retentive phases that can be released by stepwise crushing and thermal degassing. Their composition is dominated by the solar wind component and by radiogenic argon. We favor a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c01e4d2d25a513841c76c39fbb5606c4
https://doi.org/10.1134/s0016702918130050

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Trapped extraterrestrial argon in meteorites

Autor: A. I. Buikin, Ekaterina V. Korochantseva, Mario Trieloff

Publikováno v: Geochemistry International. 55:971-976

The article considers different points of view on the genesis of extraterrestrial trapped argon with a composition different from primordial/solar in meteorites and lunar rocks. An alternative hypothesis of the origin of this component is discussed.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::706822758859fdcd2b76b55139c196af
https://doi.org/10.1134/s0016702917110064

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39Ar-40Ar chronology of the enstatite chondrite parent bodies

Autor: Jens Hopp, U. Ott, Ekaterina V. Korochantseva, Alexey I. Buykin, Mario Trieloff

Publikováno v: Meteoritics & Planetary Science. 49:358-372

Ar-Ar isochron ages of EL chondrites suggest closure of the K-Ar system at 4.49 ± 0.01 Ga for EL5 and 6 chondrites, and 4.45 ± 0.01 Ga for EL3 MAC 88136. The high-temperature release regimes contain a mixture of radiogenic 40Ar* and trapped primord

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::33a71bdc720a4c1f84ae104ca1bb815d
https://doi.org/10.1111/maps.12243

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40Ar-39Ar and cosmic-ray exposure ages of nakhlites-Nakhla, Lafayette, Governador Valadares-and Chassigny

Autor: A. I. Buikin, Jenns Hopp, Mario Trieloff, Ekaterina V. Korochantseva, Ulrich Ott, Susanne P. Schwenzer

Publikováno v: Meteoritics & Planetary Science. 46:1397-1417

We present 40Ar-39Ar dating results of handpicked mineral separates and wholerock samples of Nakhla, Lafayette, and Chassigny. Our data on Nakhla and Lafayette and recently reported ages for some nakhlites and Chassigny (Misawa et al. 2006; Park et a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e8d68ee205f5787785d34bf723ea360c
https://doi.org/10.1111/j.1945-5100.2011.01240.x

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Distribution of Mantle and Atmospheric Argon in Mantle Xenoliths from the Western Arabian Peninsula: Constraints on Timing and Composition of Metasomatizing Agents in the Lithospheric Mantle

Autor: Hans-Peter Meyer, A. I. Buikin, Rainer Altherr, Jens Hopp, Ekaterina V. Korochantseva, Mario Trieloff, Melanie Kaliwoda

Publikováno v: Journal of Petrology. 51:2547-2570

To investigate the geochemical behaviour of argon isotopes during mantle metasomatism and to obtain chronological information on the age of metasomatic events under the Arabian Shield, we analyzed mantle xenoliths and hornblende megacrysts from Saudi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5f0a043319e45fd5b0d8aeb24a1f8d3a
https://doi.org/10.1093/petrology/egq073

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Shergottites Dhofar 019, SaU 005, Shergotty, and Zagami:40Ar-39Ar chronology and trapped Martian atmospheric and interior argon

Autor: A. I. Buikin, Ekaterina V. Korochantseva, Mario Trieloff, Jens Hopp

Publikováno v: Meteoritics & Planetary Science. 44:293-321

We report a high-resolution 40Ar-39Ar study of mineral separates and whole-rock samples of olivine-phyric (Dhofar 019, Sayh al Uhaymir [SaU] 005) and basaltic (Shergotty, Zagami) shergottites. Excess argon is present in all samples. The highest (40Ar

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::94b3d7275ea938e3890116d4ed9b4268
https://doi.org/10.1111/j.1945-5100.2009.tb00735.x

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