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Understanding the textures of Apollo 11 high-Ti mare basalts: A quantitative petrographic approach
Xue, Zhuqing1,2,3; Welsh, Donald F.3; Neal, Clive R.3; Xiao, Long4
2021-12-15
发表期刊METEORITICS & PLANETARY SCIENCE
ISSN1086-9379
页码19
通讯作者Neal, Clive R.(neal.1@nd.edu)
摘要This paper represents a comprehensive crystal size distribution (CSD) study of ilmenite and plagioclase from 12 Apollo 11 basalts from four of the five compositional groups (Groups A, B1, B2, B3, and one unclassified basalt-Group "U" basalt 10062). Ilmenite was saturated in the magma at/before eruption, resulting in subsurface growth of phenocrysts (Group B1) and many small crystals upon eruption. Plagioclase always exhibits linear CSDs representing a single cooling regime in each sample, which is interpreted as crystallizing within isolated magma pockets late in the cooling of the erupted lava flow. Latent heat of crystallization and insulating effects of crystallized phases produced slower cooling and lower plagioclase nucleation densities. Exceptions are the Group B2 and B3 basalts, indicating relatively earlier crystallization of plagioclase on the lunar surface. Our study demonstrates that textures of the Apollo 11 basalts are a product of the interplay among cooling rate, bulk composition, and nucleation density during crystallization. Group A basalts have the highest cooling rates compared to the other Apollo 11 samples (except 10072,53), and were erupted through high effusion rates producing thick flows that underwent extended cooling that induced textural coarsening in both early crystallizing ilmenite and late-stage plagioclase. Group B1 lavas had the lowest effusion rates producing the thinnest flows. The Groups B2, B3, and U basalts are intermediate between these end members. Our approach can be used to define eruption environment, crystallization sequence, and cooling rate of samples collected on the Moon from non-bedrock sources.
DOI10.1111/maps.13767
收录类别SCI
语种英语
资助项目China Scholarship Council[201806410078] ; National Key R & D Program of China[2020YFE0202100] ; Pre-research Project on Civil Aerospace Technologies of CNSA[D020205]
WOS研究方向Geochemistry & Geophysics
WOS类目Geochemistry & Geophysics
WOS记录号WOS:000730381000001
出版者WILEY
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被引频次:3[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.qdio.ac.cn/handle/337002/177513
专题深海极端环境与生命过程研究中心
通讯作者Neal, Clive R.
作者单位1.Univ Chinese Acad Sci, Sch Marine Sci, Beijing 100049, Peoples R China
2.Chinese Acad Sci, Ctr Deep Sea Res, Inst Oceanol, Qingdao 266071, Peoples R China
3.Univ Notre Dame, Dept Civil & Environm Engn & Earth Sci, Notre Dame, IN 46556 USA
4.China Univ Geosci, Sch Earth Sci, Wuhan 430074, Peoples R China
第一作者单位中国科学院海洋研究所
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Xue, Zhuqing,Welsh, Donald F.,Neal, Clive R.,et al. Understanding the textures of Apollo 11 high-Ti mare basalts: A quantitative petrographic approach[J]. METEORITICS & PLANETARY SCIENCE,2021:19.
APA Xue, Zhuqing,Welsh, Donald F.,Neal, Clive R.,&Xiao, Long.(2021).Understanding the textures of Apollo 11 high-Ti mare basalts: A quantitative petrographic approach.METEORITICS & PLANETARY SCIENCE,19.
MLA Xue, Zhuqing,et al."Understanding the textures of Apollo 11 high-Ti mare basalts: A quantitative petrographic approach".METEORITICS & PLANETARY SCIENCE (2021):19.
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