Results 91 to 100 of about 102,836 (336)
Geostandards and Geoanalytical Research, EarlyView.Key Points A stoichiometric calibration method for dual‐energy computed tomography allows non‐destructive characterisation of materials. Different acquisition settings and three different scanners were tested, characterising three rocks of known composition. Comparison of measurement results reveals the key parameters to be considered to perform useful
Margherita Martini +7 more
wiley +1 more source
Classification of stony meteorites and chondrules – the case of meteorite Jesenice
Geologija, 2012 In the first part of the paper there is a description about genesis of meteorites, in particularly about stony meteorites– chondrites, since meteorite Jesenice is an ordinary L chondrite. Chondrules represent main part of the mass ofchondritic meteorites.
Bojan Ambrožič +3 more
doaj
Data-Driven UPLC-Orbitrap MS Analysis in Astrochemistry
Life, 2019 Meteorites have been found to be rich and highly diverse in organic compounds. Next to previous direct infusion high resolution mass spectrometry experiments (DI-HR-MS), we present here data-driven strategies to evaluate UPLC-Orbitrap MS analyses.
Alexander Ruf +4 more
doaj +1 more source
A Portable Magnetometer for Magnetic Measurements of Meter‐Sized Meteorites
Geochemistry, Geophysics, Geosystems, 2020 Meteorites contain records of past magnetic fields in the form of natural remanent magnetization (NRM). A key property of meteorite magnetization that provides information about its origin is its dependence on spatial scale.
Elise Clavé +6 more
doaj +1 more source
Rare and unique meteorites from Antarctica [PDF]
The detection of Antarctic meteorites of Lunar and perhaps Martian origin, belongs to the most important discoveries in planetology during the last years.
Palme, H.
core +1 more source
, 2019 Metallic microstructures in slowly-cooled iron-rich meteorites reflect the thermal and magnetic histories of their parent planetesimals. Of particular interest is the cloudy zone, a nanoscale intergrowth of Ni-rich islands within a Ni-poor matrix that ...
Bryson, James F. J. +2 more
core +2 more sources
Dating climatic change in hot deserts using desert varnish on meteorite finds [PDF]
, 2003 A thin coating of desert varnish occurs on Forrest 009 and Nurina 004, both equilibrated ordinary chondrite (L6) finds from the Nullarbor Plain, Australia.
Bland, P.A., Lee, M.R.
core +1 more source
Geostandards and Geoanalytical Research, EarlyView.Key Points PEEK tubing has been observed to adsorb Pd and Pt ions, resulting in significantly reduced recoveries of Pd and Pt elements. HPA‐S provides a more effective dissolution for meteorite samples than Carius tube digestion, resulting in higher mass fractions for PGE.
Yuling Zeng +2 more
wiley +1 more source
Geochemistry and petrology of primitive achondrite meteorites LEW 88280, MAC 88177, ALHA 81187, EET 84302, and LEW 88663 [PDF]
Primitive achondrites are meteorites that have mineral and bulk chemical compositions similar to the most primitive meteorites (chondrites) but have textures similar to more evolved meteorites (achondrites).
Field, Stephen W.
core +1 more source
Cosmic-ray exposure records and origins of meteorites [PDF]
, 1985 The cosmic-ray records of meteorites are used to infer much about their origins and recent histories. The methods used to interpret meteorites' cosmic-ray records, especially identifying simple or complex exposure histories, often are inadequate ...
Reedy, R. C.
core +1 more source