Results 91 to 100 of about 32,577 (247)

The mineralogy and alteration history of the Yamato-type (CY) carbonaceous chondrites (Supporting Data)

open access: green, 2023
Martin D. Suttle   +9 more
openalex   +1 more source

Olivine–ringwoodite transformation in Katol meteorite: implications for localized superheating of chondritic melt and seismic attenuation

open access: yesProgress in Earth and Planetary Science
Constraining 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

Composition of the L5 Mars Trojans: Neighbors, not Siblings

open access: yes, 2007
Mars is the only terrestrial planet known to have Tro jan (co-orbiting) asteroids, with a confirmed population of at least 4 objects. The origin of these objects is not known; while several have orbits that are stable on solar-system timescales, work by ...
Andrew S. Rivkin   +40 more
core   +1 more source

Coreless Terrestrial Exoplanets

open access: yes, 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

Antarctic Meteorite Newsletter, volume 9, no. 2 [PDF]

open access: yes
Preliminary description and classifications of meteorites that were completed since publication of the February issue are contained. Most large (greater than 150 g) specimens (regardless of petrologic type) and all pebble sized (less than 150 g ...
Gooding, J. L.
core   +1 more source

Rare earth geochemistry of Arenig cherts from the Ballantrae Ophiolite and Leadhills Imbricate Zone, southern Scotland: implications for origin and significance to the Caledonian Orongeny [PDF]

open access: yes, 1999
Rare earth element (REE) data from low to mid-Arenig cherts are used to test competing models for the early Ordovician evolution of the Laurentian margin in the northern British Isles.
Armstrong, H.A., Floyd, J.D., Owen, A.W.
core  

Laser Irradiation of Carbonaceous Chondrite Simulants: Space-weathering Implications for C-complex Asteroids

open access: yesThe Planetary Science Journal
Surfaces of carbonaceous asteroids (C-complex) have shown diverse, contrasting spectral variations, which may be related to space weathering. We performed laser irradiation experiments on CI and CM simulant material under vacuum to mimic the spectral ...
Andy J. López-Oquendo   +2 more
doaj   +1 more source

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