Results 81 to 90 of about 21,160 (248)
Meteoritics &Planetary Science, EarlyView.Abstract Despite meteorites having been recognized as the source of iron in some ancient iron artifacts, few archeological irons have been analyzed so far, as invasive methods are precluded. In this work, four iron knives and one axe collected near Guelmime and Imilchil (Morocco) were investigated by advanced analytical techniques, including handheld ...
Giorgio S. Senesi +6 more
wiley +1 more source
Study of the Extraterrestrial Materials at Antarctica, IV. : On the Yamato Meteorites
Antarctic Record, 1974 Additional mineralogical and chemical studies of the Yamato meteorites are under way. The mode analysis and the optical properties in thin sections are examined under a microscope.
Makoto SHIMA +2 more
doaj +1 more source
Viroids-First—A Model for Life on Earth, Mars and Exoplanets
Geosciences, 2019 The search for extraterrestrial life, recently fueled by the discovery of exoplanets, requires defined biosignatures. Current biomarkers include those of extremophilic organisms, typically archaea.
Karin Moelling, Felix Broecker
doaj +1 more source
Antarctic Record, 2023 We provide a comprehensive overview of a reconnaissance expedition aimed at identifying new possible meteorite stranding zones in the surrounding of the Belgian Princess Elisabeth Antarctica (PEA) station in the Sør Rondane Mountains during the BELARE ...
Vinciane Debaille +9 more
doaj +1 more source
Weathering of stony meteorites in Antarctica [PDF]
, 1986 Weathering produces undesirable physical, chemical, and isotopic changes that might disturb the records of cosmochemical evolution that are sought in meteorites. Meteorites are physically disintegrated by crack propagation phenomena, including ice riving
Gooding, J. L.
core
Thermal history, collisional history, and structure of the CK‐chondrite parent body
Meteoritics &Planetary Science, EarlyView.Abstract Major chondrite groups (H, L, LL, R, EH, EL, CK) with some members of petrologic type 5 and 6 also have some members of types 3 and 4; they do not have members of type 1 or 2. Their parent bodies had onion‐shell structures and were internally heated by the decay of 26Al.
Alan E. Rubin
wiley +1 more source
A Model Study on the Dynamics of the Amino Acid Content in Micrometeoroids during Atmospheric Entry
Chemistry, 2020 A model for the survival of the amino acid content in micrometeorites and its possible transformations upon atmospheric entry is described. Since any organic species released in the atmosphere at high altitudes would exhibit a limited lifetime with ...
Carlo Canepa
doaj +1 more source