Results 121 to 130 of about 52,439 (271)
Thermal Alteration of Labile Elements in Carbonaceous Chondrites
, 2018 Carbonaceous chondrite meteorites are some of the oldest Solar System planetary materials available for study. The CI group has bulk abundances of elements similar to those of the solar photosphere.
Andronikov, Alexandre +6 more
core +1 more source
Rare Earth Element Analysis of UR CAIs in CV3 Chondrites by SRXRF [PDF]
, 2020 P. T. Genzel +12 more
openalex +1 more source
Meteoritics and Planetary Science, 2014 Here, we report the mineralogy, petrography, C‐N‐O‐stable isotope compositions, degree of disorder of organic matter, and abundances of presolar components of the chondrite Roberts Massif (RBT) 04133 using a coordinated, multitechnique approach.
J. Davidson +9 more
semanticscholar +1 more source
Expanding the Ichnofacies Model to Tidal Straits: Testing Predictions and Assessing Anomalies
Terra Nova, EarlyView.ABSTRACT Trace fossils are instrumental in facies analysis, but some depositional environments remain underexplored. Cenozoic deposits in Italy have been studied to evaluate the ichnology of tidal straits. These comprise four zones: (1) strait centre, (2) dune‐bedded strait zone, (3) strait end and (4) strait margin.
Luis A. Buatois +6 more
wiley +1 more source
Terra Nova, EarlyView.ABSTRACT The Transbrasiliano‐Kandi‐4°50′ (TK4) shear zone in western Gondwana crosscuts South America and NW Africa for at least 6000 km. Despite its impressive size, the timing of the main episode of dextral ductile shearing is uncertain. We present detailed in situ multi‐mineral geochronology of mylonites from both Brazil and Algeria supporting that ...
F. A. Caxito +4 more
wiley +1 more source
Antarctic meteorite newsletter. Volume 4: Number 1, February 1981: Antarctic meteorite descriptions, 1976, 1977, 1978, 1979 [PDF]
This issue of the Newsletter is essentially a catalog of all antarctic meteorites in the collections of the Johnson Space Center Curation Facility and the Smithsonian except for 288 pebbles now being classed.
Bogard, D. D. +5 more
core +1 more source
Petrogenesis of anomalous Queen Alexandra Range enstatite meteorites and their relation to enstatite chondrites, primitive enstatite achondrites, and aubrites [PDF]
, 2014 D. van Niekerk, Klaus Keil, M. Humayun
openalex +1 more source
Progress in Earth and Planetary ScienceConstraining the superheating of impact melt offers insights into the temperature gradient within shock-melt veins, affecting the growth rate of polymorphic transformations and liquidus phase crystallization.
Kishan Tiwari +3 more
doaj +1 more source
Coreless Terrestrial Exoplanets
, 2008 Differentiation in terrestrial planets is expected to include the formation of a metallic iron core. We predict the existence of terrestrial planets that have differentiated but have no metallic core--planets that are effectively a giant silicate mantle.
Blundell D. +6 more
core +1 more source