Results 101 to 110 of about 24,652 (211)

Impact experiments in support of “Lithopanspermia”: The route from Mars to Earth [PDF]

open access: yes, 2006
Shock recovery experiments on a Martian analogue rock (gabbro) loaded with three types of microorganisms reveal that these organisms survive the impact and ejection phase on Mars at shock pressures up to about 50 GPa with exponentially decreasing ...
Artemieva, N. A.   +9 more
core  

Impact and collisional processes in the solar system [PDF]

open access: yes
The mechanical and thermodynamic aspects of shock impact cratering and accretionary processes on solid planets and satellites are being investigated experimentally.
Ahrens, T. J.
core   +1 more source

Results from the Apollo passive seismic experiment [PDF]

open access: yes
Recent results from the Apollo Seismic Network suggest that primitive differentiation occurred in the outer shell of the moon to a depth of approximately 300 km and the central region of the moon is presently molten to a radius of between 200 and 300 km.
Dorman, J.   +5 more
core   +4 more sources

The origin and tectonic implications of the ca. 406 Ma magmatic activity in the western Yangtze Block, South China

open access: yesSolid Earth Sciences
In this study, we report for the first time a new gabbro diorite, forming in an intraplate extensional environment during the Early Devonian, in the Shimian of the western margin of the Yangtze Block.
Chun-Mei Liu   +9 more
doaj   +1 more source

The boundary between the Central Asian Orogenic belt and Tethyan tectonic domain deduced from Pb isotopic data [PDF]

open access: yes, 2015
Castillo, Paterno R   +7 more
core   +1 more source

Application of imaging spectrometer data to the Kings-Kaweah ophiolite melange [PDF]

open access: yes
The Kings-Kaweah ophiolite melange in east-central California is thought to be an obducted oceanic fracture zone and provides the rare opportunity to examine in detail the complex nature of this type of terrain.
Mustard, John F., Pieters, Carle M.
core   +1 more source

A geologic atlas of TIMS data [PDF]

open access: yes
In the three years since the first data were taken, it was well demonstrated that the Thermal Infrared Multispectral Scanner (TIMS), properly used, can be a most valuable tool for the geologist.
Abbott, Elsa
core   +1 more source

neoKREEP: A new lunar component at Apollo 17 [PDF]

open access: yes
The Apollo 11 (Mare Tranquillitatis) and Apollo 17 (Mare Serenitatis) landing sites are important as the only sources of high-Ti basalt visited by the Apollo missions.
Jerde, Eric A.   +2 more
core   +1 more source

Workshop on Magmatic Processes of Early Planetary Crusts: Magma Oceans and Stratiform Layered Intrusions [PDF]

open access: yes
The significance of the lunar highland pristine cumulate samples were reevaluated with the aid of the additional insights provided by geologically constrained terrestrial investigations.
Mccallum, I. S., Walker, D.
core   +1 more source

Ratio maps of iron ore deposits Atlantic City district, Wyoming [PDF]

open access: yes
Preliminary results of a spectral rationing technique are shown for a region at the southern end of the Wind River Range, Wyoming. Digital ratio graymaps and analog ratio images have been produced for the test site, but ground truth is not yet available ...
Vincent, R. K.
core   +1 more source

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