Results 91 to 100 of about 43,521 (279)

Sub-Zero Alteration in an Isotopically Heavy Brine Preserved in a Pristine H Chondrite Xenolith [PDF]

open access: yes
Introduction: Brecciated H chondrites host a variety of xenoliths, including unshocked, phyllo- silicate-rich carbonaceous chondrites (CCs). The brecciated H chondrite Zag (H3-6) is one of two chondrites to host macroscopic (1 - 5mm), xenolithic crystals
Frank, D. R.   +3 more
core   +1 more source

Separation of Q-Noble gas carrier from bulk carbon in enstatite chondrites by stepped combustion [PDF]

open access: yes, 2001
Detailed stepped combustion of HF-HCl residues from carbonaceous and enstatite chondrites suggest Q-noble gas carrier is different from bulk carbon in the ...
Pillinger, Colin   +3 more
core  

Abundance, distribution, and origin of 60Fe in the solar protoplanetary disk

open access: yes, 2012
Meteorites contain relict decay products of short-lived radionuclides that were present in the protoplanetary disk when asteroids and planets formed. Several studies reported a high abundance of 60Fe (t1/2=2.62+/-0.04 Myr) in chondrites (60Fe/56Fe~6*10-7)
Dauphas, Nicolas, Tang, Haolan
core   +1 more source

Chondrites isp. Indicating Late Paleozoic Atmospheric Anoxia in Eastern Peninsular India

open access: yesThe Scientific World Journal, 2014
Rhythmic sandstone-mudstone-coal succession of the Barakar Formation (early Permian) manifests a transition from lower braided-fluvial to upper tide-wave influenced, estuarine setting. Monospecific assemblage of marine trace fossil Chondrites isp.
Biplab Bhattacharya, Sudipto Banerjee
doaj   +1 more source

Report on Antarctic meteorites search around the Sor Rondane Mountains, JARE-29 1988-1989

open access: yesAntarctic Record, 1990
A systematic search for Antarctic meteorites was carried out by the Asuka winter party of the 29th Japanese Antarctic Research Expedition on the bare ice field around the Sφr Rondane Mountains in the 1987-1988 and 1988-1989 field seasons.
Hiroshi Naraoka   +2 more
doaj   +1 more source

Antarctic meteorite descriptions 1976-1977-1978-1979 [PDF]

open access: yes
All previously distributed meteorite data sheets, plus a number of new ones for 1979 chondrites are included. A comprehensive sample index listing meteorite name/number, classification, and weathering category is also included.
Bogard, D. D.   +5 more
core   +1 more source

Heating experiments of the Tagish Lake meteorite: Investigation of the effects of short-term heating on chondritic organics

open access: yes, 2019
We present in this study the effects of short-term heating on organics in the Tagish Lake meteorite and how the difference in the heating conditions can modify the organic matter (OM) in a way that complicates the interpretation of a parent body’s ...
,, ,, Chan, Queenie H. S., Nakato, Aiko
core   +1 more source

Hydrous Chondrites under Shock

open access: yesThe Astrophysical Journal
We examine the shock response of a chondrule-like multicomponent silicate melt enriched with 2 wt% H _2 O, representative of hydrous chondrites, using ab initio molecular dynamics.
Adrien Saurety, Razvan Caracas
doaj   +1 more source

Mineralogy and matrix composition of CR chondrites Renazzo and EET 87770, and ungrouped chondrites Essebi and MAC 87300 [PDF]

open access: yes
The fine-grained mineralogy of the matrix of two CR chondrites, Renazzo and EET 87770, and the ungrouped (but possible related) Essebi and MAC 87300 chondrites was characterized using standard microprobe (focussed beam) and transmission electron ...
Zolensky, Michael E.
core   +1 more source

Study of the Extraterrestrial Materials at Antarctica, III : On the Yamato Meteorites

open access: yesAntarctic Record, 1973
Antarctica is thought to be the most suitable place for searching extraterrestrial materials. Since 1965, we have been studying microtektite and cosmic dust in Antarctica.
Masako SHIMA   +2 more
doaj   +1 more source

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