Early terrestrial and lunar anorthosites:Comparative geochemistry and evolutionary processes
作者机构：School of the EnvironmentUniversity of WindsorWindsorON N9B 3P4Canada GeoZentrum NordbayernFriedrich-Alexander-UniversitätErlangen 91054BayernGermany Center for Global TectonicsState Key Laboratory for Geological Processes and Mineral ResourcesChina University of GeosciencesWuhanHubei ProvincePR China School of GeographyGeology and the EnvironmentUniversity of LeicesterLeicester LE17RHUK
出 版 物：《Geoscience Frontiers》 (地学前缘（英文版）)
年 卷 期：2024年第15卷第6期
页 面：348-366页
核心收录：
学科分类：0709[理学-地质学] 070901[理学-矿物学、岩石学、矿床学] 07[理学]
基 金：Alexander von Humboldt-Stiftung, AvH IUGS National Natural Science Foundation of China, NSFC Natural Sciences and Engineering Research Council of Canada, NSERC, (RGPIN-2019-04236, 41890834) Natural Sciences and Engineering Research Council of Canada, NSERC
主 题：Early terrestrial anorthosites Lunar anorthosites Geochemistry Mineral chemistry
摘 要：In a paper in 1970,Brian Windley first recognised that early terrestrial and lunar anorthosites both have calcic plagioclase,and low TiO_(2)and high CaO and Al_(2)O_(3)*** these similarities,the geochemistry of early terrestrial and lunar anorthosites has not been rigorously compared and *** this end,we compiled 425 analyses from 212 early terrestrial anorthosite occurrences and 306 analyses from 16 lunar anorthosite *** was supplemented by a compilation of plagioclase anorthite(An)contents and pyroxene Mg#from early terrestrial and lunar *** terrestrial anorthosites have lower whole-rock An contents but similar Mg#to lunar *** CaO contents of lunar anorthosites are higher than those of early terrestrial anorthosites for a given MgO and Al_(2)O_(3)content,early terrestrial anorthosites have higher SiO_(2)contents than lunar anorthosites at a given MgO content,and lunar anorthosites have higher Eu/Eu*anomaly ratios yet broadly similar La/Yb and Nd/Sm ratios than early terrestrial *** early terrestrial anorthosites have less fractionated chondrite-normalised rare earth element(REE)patterns and less prominent positive Eu anomalies than lunar *** anorthosites have higher plagioclase An contents,yet a similar range of pyroxene Mg#compared to their early terrestrial *** early terrestrial anorthosites are more fractionated than some lunar *** interpretations imply that most early terrestrial anorthosites crystallised from basaltic parental magmas that were generated by high-degree partial melting of sub-arc asthenosphere mantle wedge sources that were hydrated by slab-derived fluids,with the remainder being associated with mid-ocean ridge and mantle plume *** of the arc-related early terrestrial anorthosites were influenced by crustal *** addition,early terrestrial anorthosites originated from partial melting of the mantle at variou
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