Results 11 to 20 of about 3,243 (195)

Pressure‐Induced sp 2 ‐sp 3 Transitions in Carbon‐Bearing Phases

open access: yesGeophysical Monograph Series, Page 1-9., 2020

This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.

Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions

Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
Sergey S. Lobanov   +1 more
wiley  

+6 more sources

The Osmium Isotope Signature of Phanerozoic Large Igneous Provinces

open access: yesGeophysical Monograph Series, Page 229-246., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Alexander J. Dickson   +2 more
wiley  

+4 more sources

The Prevailing Catalytic Role of Meteorites in Formamide Prebiotic Processes

open access: yesLife, 2018
Meteorites are consensually considered to be involved in the origin of life on this Planet for several functions and at different levels: (i) as providers of impact energy during their passage through the atmosphere; (ii) as agents of geodynamics ...
Raffaele Saladino   +2 more
doaj   +1 more source

Collection of Yamato Meteorites, Antarctica, in December 1973

open access: yesAntarctic Record, 1976
In addition to 9 meteorites, designated as Yamato meteorites, discovered in December 1969 at the SE end of the Yamato Mountains, East Antarctica, 12 stoney meteorites were found in December 1973 in nearly the same area by the traverse glaciology party of
Kazuyuki SHIRAISHI   +2 more
doaj   +1 more source

Molecular Asymmetry in Prebiotic Chemistry: An Account from Meteorites

open access: yesLife, 2016
Carbonaceous Chondrite (CC) meteorites are fragments of asteroids, solar planetesimals that never became large enough to separate matter by their density, like terrestrial planets.
Sandra Pizzarello
doaj   +1 more source

Identifying the wide diversity of extraterrestrial purine and pyrimidine nucleobases in carbonaceous meteorites

open access: yesNature Communications, 2022
All DNA/RNA nucleobases were identified in carbonaceous meteorites. Having been provided to the early Earth as a component in carbonaceous meteorites, these molecules might have played a role for the emergence of genetic functions in early life.
Yasuhiro Oba   +6 more
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

A detailed record of the BELARE 2019-2020 meteorite recovery expedition on the Nansen Ice Field, East Antarctica

open access: yesAntarctic Record, 2021
This report summarizes the Belgian Antarctic Expedition (BELARE) 2019-2020 meteorite search and recovery expedition near the Sør Rondane Mountains of East Antarctica during the 2019-2020 field season.
Steven Goderis   +8 more
doaj   +1 more source

The Origin and Physico-Chemical Properties of Some Unusual Earth Rock Fragments

open access: yesApplied Sciences, 2022
In this paper, several researches were undertaken related to a violent phenomenon, characterized by a sonic boom, felt on an area of at least 500 km2, shortly followed by the fall of rock fragments that were then recovered from the ground.
Alexandru Cocean   +7 more
doaj   +1 more source

Grain Size Effects on Visible and Near-infrared (0.35–2.5 μm) Laboratory Spectra of Ordinary Chondrite and HED Meteorites

open access: yesThe Planetary Science Journal, 2023
Remote spectral characterization of near-Earth asteroids (NEAs) relies on laboratory spectral calibration to constrain their surface composition, including mineral chemistry and relative mineral abundances.
Bryn Bowen   +10 more
doaj   +1 more source

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