Authigenic monazite and xenotime Pb-Pb/U-Pb dating of siliciclastic sedimentary rocks

doi:10.1016/j.earscirev.2022.104217

	Authigenic monazite and xenotime Pb-Pb/U-Pb dating of siliciclastic sedimentary rocks
	Lan, Zhongwu 1,2,3
刊名	EARTH-SCIENCE REVIEWS
	2022-11-01
卷号	234 页码:15
关键词	Authigenic Xenotime Monazite U-Pb Pb-Pb dating Events
ISSN号	0012-8252
DOI	10.1016/j.earscirev.2022.104217
通讯作者	Lan, Zhongwu(lzw1981@126.com)
英文摘要	Authigenic xenotime (YPO4) and monazite ((Ce, La, Nd)PO4) are common trace components in siliciclastic sedimentary rocks, where they can form under diverse geological processes such as low-temperature early diagenesis or hydrothermal activities or later low grade metamorphism. Authigenic xenotime and monazite could carry distinctive geochemical fingerprints. By virtue of their commonly high U and Th concentrations (commonly 100-1000 ppm) and high closure temperature for U/Th-Pb isotope systems (700-800 degrees C), dates from authigenic phosphate are frequently used to constrain the depositional age of sedimentary rocks. Their tiny size (commonly <20 mu m but can be occasionally up to about 1 mm in diameter for large monazite nodules) requires SEM-BSE imaging to locate for in situ high spatial and mass resolution SIMS U-Pb/Pb-Pb dating analyses. Their variable chemical compositions, particularly xenotime, require multiple (at least three) matrix-matching stan-dards to correct U-Pb fractionation. Interpretation of radiometric ages sometimes encounters difficulties because of diverse origins of phosphates including diagenetic, hydrothermal, and detrital origins. An integrated petrographic and geochemical study can aid in telling apart diagenetic xenotime/monazite from their hydro-thermal and detrital counterparts, thereby correctly applying them to constrain the depositional age of sedi-mentary rocks.
资助项目	National Science Foundation of China[41673016] ; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences[SKL-Z202001] ; State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences[193112] ; State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences[223115] ; State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences[GPMR201902]
WOS关键词	SHRIMP U-PB ; UNDERSTANDING GEOLOGIC PROCESSES ; NW AUSTRALIA IMPLICATIONS ; LA-ICP-MS ; DIAGENETIC XENOTIME ; FLUID-FLOW ; AGE CONSTRAINTS ; HYDROTHERMAL ALTERATION ; WITWATERSRAND BASIN ; ELECTRON-MICROPROBE
WOS研究方向	Geology
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000880583300002
资助机构	National Science Foundation of China ; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences ; State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences ; State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences
内容类型	期刊论文
源URL	[http://ir.nigpas.ac.cn/handle/332004/41421]
专题	中国科学院南京地质古生物研究所
通讯作者	Lan, Zhongwu
作者单位	1.China Univ Geosci, State Key Lab Geol Proc & Mineral Resources, Wuhan 430074, Hubei, Peoples R China 2.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Jiangsu, Peoples R China 3.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Lan, Zhongwu. Authigenic monazite and xenotime Pb-Pb/U-Pb dating of siliciclastic sedimentary rocks[J]. EARTH-SCIENCE REVIEWS,2022,234:15.
APA	Lan, Zhongwu.(2022).Authigenic monazite and xenotime Pb-Pb/U-Pb dating of siliciclastic sedimentary rocks.EARTH-SCIENCE REVIEWS,234,15.
MLA	Lan, Zhongwu."Authigenic monazite and xenotime Pb-Pb/U-Pb dating of siliciclastic sedimentary rocks".EARTH-SCIENCE REVIEWS 234(2022):15.