High-titanium mare basalts
Web15 feb 2001 · Unlike the mare basalts that erupted in the highlands, though, at least some of the basalts in this region have extremely high concentrations of titanium [40] and should be relatively dense. In order to reconcile our magma buoyancy hypothesis with the dense titanium-rich basalts that are found within Oceanus Procellarum, we need to show that … WebBulk compositional and mineral chemical data for 28 previously unanalyzed samples support the classification of Apollo-17 high-Ti mare basalts into three-types (A, B, and C), defined on the basis of analyses of fine-grained basalts. The most MgO- and TiO2-rich fine-grained basalts of these types appear to be the best choices for representing the compositions …
High-titanium mare basalts
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Web1 feb 1979 · Bulk compositional and mineral chemical data for 28 previously unanalyzed samples support the classification of Apollo-17 high-Ti mare basalts into three-types (A, B, and C), defined on the... Web15 apr 2024 · Mare basalts exhibit large variations in compositions, especially the TiO 2 content. As such, they were initially subdivided into three groups on the basis of the bulk …
WebWe found that the increase in the mean titanium content occurred within a relatively short period near approximately 2.3 Ga, suggesting that the magma source of the mare basalts changed at this particular age. Moreover, the high-titanium basaltic eruptions are correlated with a second peak in volcanic activity near ~2 Ga. WebThe high titanium basalts collected in the maria Tranquillitatis and Serenitatis crystallized 3.5-3.9 Ga ago. The ages of the low titanium rocks found in Oceanus Procellarum and on the eastern edge of mare Imbrium are lower, 3.1-3.4 Ga. There is, however, evidence that high-Ti basalts with lower ages and low-Ti basalts with higher ages occur on ...
Web9 gen 2003 · Moreover, the depths of origin of these glasses can exceed 500 km (refs 27–29) and might share a mantle source with PKT basalts. If the high-titanium source region originally solidified at a ... Web1 nov 2001 · Abstract. The last major phase of lunar volcanism produced extensive high-titanium mare deposits on the western nearside which remain unsampled by landing …
WebTranslations in context of "Ilmenite" in Italian-English from Reverso Context: Inoltre, alcuni mari basaltici hanno un livello particolarmente alto di titanio, nella forma di Ilmenite.
WebThe oldest surface exposed mare basalts are very low Ti basalts of the Telemann Formation. These are overlain by low to intermediate Ti basalts of the Hermann Formation. The youngest exposed basalts are the moderately Ti-rich members of the Sharp Formation. john baker centralia washingtonWebLunar high-Ti (TiO 2, 8–14 weight percent) mare basalts include low-K (K 2 O < 0.1 weight percent) Apollo 11 and 17 and high-K (K 2 O ∼ 0.3 weight percent) Apollo 11 varieties. … john baker cresswellWeb7 set 2001 · Basaltic volcanism is responsible for the lunar maria—the dark, smooth plains that fill ancient basins on the Moon. This volcanism must have occurred after the magma ocean had solidified. Mare volcanism is caused by the remelting of iron-rich cumulate rocks, deep in the lunar mantle (below 400 km). intellibed reviews 2020Web1 mar 2010 · PDF This abstract describes the diversity in high-Ti mare basalts. Find, read and cite all the research you need on ResearchGate john baker chips 2017Web1 giu 2024 · The high‐titanium basaltic eruptions occurring during the last volcanic activity period can be explained by the three possible scenarios (1) the ilmenite‐bearing … john baker cincinnatiWeb1 giu 1992 · High-Ti mare basalts (i.e., high-Ti/low-Al/low-K) are found at Apollo 11 and Apollo 17 sites; however, the A-11 basalts contain lower TiO 2 abundances, a considerably larger range in trace-element contents, and the only … john baker cleveland ohUsing terrestrial classification schemes, all mare basalts are classified as tholeiitic, but specific subclassifications have been invented to further describe the population of lunar basalts. Mare basalts are generally grouped into three series based on their major element chemistry: high-Ti basalts, low-Ti basalts, and very-low-Ti (VLT) basalts. While these groups were once thought to be distinct based on the Apollo samples, global remote sensing data from the Clementine mission now … john baker creative planning