L. E. Nyquist
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Shock experiments on basalt—Ferric sulfate mixes and their possible relevance to the sulfide bleb clusters in large impact melts in shergottites Open
Large impact‐melt pockets in shergottites contain both Martian regolith components and sulfide/sulfite bleb clusters that yield high sulfur concentrations locally compared to bulk shergottites. The regolith may be the source of excess sulf…
View article: <sup>40</sup>Ar/<sup>39</sup>Ar ages of Northwest Africa 7034 and Northwest Africa 7533
<sup>40</sup>Ar/<sup>39</sup>Ar ages of Northwest Africa 7034 and Northwest Africa 7533 Open
The Martian breccias NWA 7034, NWA 7533, and paired meteorites record events ranging in age from 4.47 Ga to 1 wt% K and thought to be rich in feldspar and one containing <~1 wt% K, cluster near 1.4 Ga. The 40 Ar/ 39 Ar ages of nine grains …
Signatures of the Martian regolith components entrained in some impact‐melt glasses in shergottites Open
Martian regolith components are found in some impact melts ( IM ) containing Martian atmospheric gases in the shergottites Elephant Moraine ( EET ) 79001, Tissint, Zagami, and Shergotty. Excess sulfur abundances provide strong indicators f…
View article: Rb‐Sr and Sm‐Nd isotopic and <scp>REE</scp> studies of igneous components in the bulk matrix domain of Martian breccia Northwest Africa 7034
Rb‐Sr and Sm‐Nd isotopic and <span>REE</span> studies of igneous components in the bulk matrix domain of Martian breccia Northwest Africa 7034 Open
The bulk matrix domain of the Martian breccia NWA 7034 was examined petrographically and isotopically to better understand the provenance and age of the source material that make up the breccia. Both 147 Sm‐ 143 Nd and 146 Sm‐ 142 Nd age r…