FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2555762203> ?p ?o ?g. }

• W2555762203 endingPage "391" @default.
• W2555762203 startingPage "377" @default.
• W2555762203 abstract "Abstract Ages have been obtained using the 87 Rb– 87 Sr, 147 Sm– 143 Nd, and 146 Sm– 142 Nd isotopic systems for one of the most slowly cooled lunar rocks, Apollo 17 Mg-suite troctolite 76535. The 147 Sm– 143 Nd, 146 Sm– 142 Nd, and Rb–Sr ages derived from plagioclase, olivine, and pyroxene mineral isochrons yield concordant ages of 4307 ± 11 Ma, 4299 +29 / −35 Ma, and 4279 ± 52 Ma, respectively. These ages are slightly younger than the age determined on ferroan anorthosite suite (FAS) rock 60025 and are therefore consistent with the traditional magma ocean model of lunar differentiation in which the Mg-suite is intruded into the anorthositic crust. However, the Sm–Nd ages record when the rock passed below the closing temperature of the Sm–Nd system in this rock at ∼825 °C, whereas the Rb–Sr age likely records the closure temperature of ∼650 °C. A cooling rate of 3.9 °C/Ma is determined using the ages reported here and in the literature and calculated closure temperatures for the Ar–Ar, Pb–Pb, Rb–Sr, and Sm–Nd systems. This cooling rate is in good agreement with cooling rates estimated from petrographic observations. Slow cooling can lower apparent Sm–Nd crystallization ages by up to ∼80 Ma in the slowest cooled rocks like 76535, and likely accounts for some of the variation of ages reported for lunar crustal rocks. Nevertheless, slow cooling cannot account for the overlap in FAS and Mg-suite rock ages. Instead, this overlap appears to reflect the concordance of Mg-suite and FAS magmatism in the lunar crust as indicated by ages calculated for the solidus temperature of 76535 and 60025 of 4384 ± 24 Ma and 4383 ± 17, respectively. Not only are the solidus ages of 76535 and 60025 nearly concordant, but the Sm–Nd isotopic systematics suggest they are derived from reservoirs that were minimally differentiated prior to ∼4.38 Ga. Although the Sr isotopic composition of 60025 indicates its source was minimally differentiated, the Sr isotopic composition of 76535 indicates it underwent fractionation just prior to solidification of the 76535. These observations are consistent with both a magma ocean or a serial magmatism model of lunar differentiation. In either model, differentiation of lunar source regions must occur near the solidification age of thee samples. Perhaps the best estimate for the formation age of lunar source regions is the Rb–Sr model age of the 76535 source region age of 4401 ± 32 Ma. This is in good agreement with Sm–Nd model ages for the formation of ur-KREEP and suggests that differentiation of a least part of the Moon could not have occurred prior to ∼4.43 Ga." @default.
• W2555762203 created "2016-11-30" @default.
• W2555762203 creator A5032270574 @default.
• W2555762203 creator A5034179199 @default.
• W2555762203 creator A5044769887 @default.
• W2555762203 creator A5066120124 @default.
• W2555762203 creator A5076034169 @default.
• W2555762203 date "2017-03-01" @default.
• W2555762203 modified "2023-10-16" @default.
• W2555762203 title "Chronologic implications for slow cooling of troctolite 76535 and temporal relationships between the Mg-suite and the ferroan anorthosite suite" @default.
• W2555762203 cites W1965300445 @default.
• W2555762203 cites W1966987091 @default.
• W2555762203 cites W1968843077 @default.
• W2555762203 cites W1971513400 @default.
• W2555762203 cites W1977457396 @default.
• W2555762203 cites W1978625848 @default.
• W2555762203 cites W1980481770 @default.
• W2555762203 cites W1981622916 @default.
• W2555762203 cites W1987984093 @default.
• W2555762203 cites W2001254705 @default.
• W2555762203 cites W2006145646 @default.
• W2555762203 cites W2024341329 @default.
• W2555762203 cites W2031143732 @default.
• W2555762203 cites W2032660613 @default.
• W2555762203 cites W2036456301 @default.
• W2555762203 cites W2044590525 @default.
• W2555762203 cites W2047403801 @default.
• W2555762203 cites W2048857036 @default.
• W2555762203 cites W2050289049 @default.
• W2555762203 cites W2053381713 @default.
• W2555762203 cites W2055246759 @default.
• W2555762203 cites W2056831559 @default.
• W2555762203 cites W2058061343 @default.
• W2555762203 cites W2062042136 @default.
• W2555762203 cites W2064144633 @default.
• W2555762203 cites W2065614974 @default.
• W2555762203 cites W2067432880 @default.
• W2555762203 cites W2069856192 @default.
• W2555762203 cites W2070982661 @default.
• W2555762203 cites W2071251814 @default.
• W2555762203 cites W2071523101 @default.
• W2555762203 cites W2074030880 @default.
• W2555762203 cites W2075785150 @default.
• W2555762203 cites W2076566162 @default.
• W2555762203 cites W2083817603 @default.
• W2555762203 cites W2086905011 @default.
• W2555762203 cites W2087074422 @default.
• W2555762203 cites W2087653387 @default.
• W2555762203 cites W2088490813 @default.
• W2555762203 cites W2089927319 @default.
• W2555762203 cites W2092296354 @default.
• W2555762203 cites W2094336912 @default.
• W2555762203 cites W2099914884 @default.
• W2555762203 cites W2114508111 @default.
• W2555762203 cites W2130384361 @default.
• W2555762203 cites W2139741165 @default.
• W2555762203 cites W2148939411 @default.
• W2555762203 cites W2156121342 @default.
• W2555762203 cites W2185843388 @default.
• W2555762203 cites W2191950900 @default.
• W2555762203 cites W2520768025 @default.
• W2555762203 doi "https://doi.org/10.1016/j.gca.2016.11.021" @default.
• W2555762203 hasPublicationYear "2017" @default.
• W2555762203 type Work @default.
• W2555762203 sameAs 2555762203 @default.
• W2555762203 citedByCount "30" @default.
• W2555762203 countsByYear W25557622032017 @default.
• W2555762203 countsByYear W25557622032018 @default.
• W2555762203 countsByYear W25557622032019 @default.
• W2555762203 countsByYear W25557622032020 @default.
• W2555762203 countsByYear W25557622032021 @default.
• W2555762203 countsByYear W25557622032022 @default.
• W2555762203 countsByYear W25557622032023 @default.
• W2555762203 crossrefType "journal-article" @default.
• W2555762203 hasAuthorship W2555762203A5032270574 @default.
• W2555762203 hasAuthorship W2555762203A5034179199 @default.
• W2555762203 hasAuthorship W2555762203A5044769887 @default.
• W2555762203 hasAuthorship W2555762203A5066120124 @default.
• W2555762203 hasAuthorship W2555762203A5076034169 @default.
• W2555762203 hasBestOaLocation W25557622031 @default.
• W2555762203 hasConcept C127313418 @default.
• W2555762203 hasConcept C151730666 @default.
• W2555762203 hasConcept C166957645 @default.
• W2555762203 hasConcept C205649164 @default.
• W2555762203 hasConcept C2779181077 @default.
• W2555762203 hasConcept C2779870107 @default.
• W2555762203 hasConcept C57830525 @default.
• W2555762203 hasConcept C79581498 @default.
• W2555762203 hasConceptScore W2555762203C127313418 @default.
• W2555762203 hasConceptScore W2555762203C151730666 @default.
• W2555762203 hasConceptScore W2555762203C166957645 @default.
• W2555762203 hasConceptScore W2555762203C205649164 @default.
• W2555762203 hasConceptScore W2555762203C2779181077 @default.
• W2555762203 hasConceptScore W2555762203C2779870107 @default.
• W2555762203 hasConceptScore W2555762203C57830525 @default.
• W2555762203 hasConceptScore W2555762203C79581498 @default.
• W2555762203 hasFunder F4320306101 @default.
• W2555762203 hasFunder F4320338286 @default.

• next