Results 61 to 70 of about 10,659 (186)

The Apollo Virtual Microscope Collection: Lunar Mineralogy and Petrology of Apollo 11, 12, 14, 15 and 16 Rocks [PDF]

open access: yes, 2018
We report on the new Virtual Microscopes on Apollo 16 lunar samples in our Apollo Virtual Microscope ...
Anand, M.   +6 more
core  

Onset of giant planet migration before 4480 million years ago

open access: yes, 2019
Immediately after their formation, the terrestrial planets experienced intense impact bombardment by comets, leftover planetesimals from primary accretion, and asteroids.
Abramov, Oleg   +4 more
core   +1 more source

Petrogenesis of lunar rocks: Rb-Sr constraints and lack of H2O [PDF]

open access: yes
Rb and Sr isotopic data and other chemical data indicate major lunar differentiation at about 4.6 AE and very limited subsequent differentiation. The constraints of limited differentiation post 4.6 AE and the apparent lack of H2O on the moon, when ...
Albee, A. L., Gancarz, A. J.
core   +1 more source

The Geology of the Moon: Geochemistry and Petrology of Lunar Basalts [PDF]

open access: yes, 2010
The aim of this research is to determine any genetic relationships between high- and lowTi lunar basalts in terms of petrology, mineralogy, geochemistry and geochronology, using a set of Apollo samples. SEM images, mineral compositions, and major- and trace-element data indicate that the high and low-Ti mare-basalts form two distinct groups, both ...
openaire   +1 more source

Comparison of lunar rocks and meteorites: Implications to histories of the moon and parent meteorite bodies [PDF]

open access: yes
A number of similarities between lunar and meteoritic rocks are reported and suggest that the comparison is essential for a clear understanding of meteorites as probes of the early history of the solar systems: (1) Monomict and polymict breccias occur in
Fodor, R. V., Keil, K., Prinz, M.
core   +1 more source

Differentiation of Planetesimals and the Thermal Consequences of Melt Migration

open access: yes, 2011
We model the heating of a primordial planetesimal by decay of the short-lived radionuclides Al-26 and Fe-60 to determine (i) the timescale on which melting will occur; (ii) the minimum size of a body that will produce silicate melt and differentiate ...
Gaidos, Eric, Moskovitz, Nicholas
core   +1 more source

The Oxidation State of Sulfur in Lunar Apatite [PDF]

open access: yes
Lunar apatites contain hundreds to thousands of parts per million of sulfur. This is puzzling because lunar basalts are thought to form in low oxygen fugacity (f(sub O2)) conditions where sulfur can only exist in its reduced form (S2()), a substitution ...
Boyce, Jeremy   +5 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

A survey of lunar rock types and comparison of the crusts of earth and moon [PDF]

open access: yes
The principal known types of lunar rocks are briefly reviewed, and their chemical relationships are ...
Wood, J. A.
core   +1 more source

Lunar Outgassing, Transient Phenomena and The Return to The Moon, I: Existing Data

open access: yes, 2007
Herein the transient lunar phenomena (TLP) report database is subjected to a discriminating statistical filter robust against sites of spurious reports, and produces a restricted sample that may be largely reliable.
Arlin P. S. Crotts   +41 more
core   +1 more source

Home - About - Disclaimer - Privacy