气候变化领域集成服务门户(CCPortal): Initiation and evolution of forearc basins in the Central Myanmar Depression

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DOI	10.1130/B35301.1
	Initiation and evolution of forearc basins in the Central Myanmar Depression
	Cai, Fulong; Ding, Lin; Zhang, Qinghai; Orme, Devon A.; Wei, Honghong; Li, Jinxiang; Zhang, Ji'en; Zaw, Than; Sein, Kyaing
通讯作者	Cai, FL (通讯作者)
发表日期	2020
ISSN	0016-7606
EISSN	1943-2674
起始页码	1066
结束页码	1082
卷号	132 期号:5-6
英文摘要	The forearc basin in Myanmar is significant in understanding the development of continental forearc basins. We present stratigraphic, sandstone petrographic, and U-Pb detrital data from Upper Cretaceous-Eocene strata of Chindwin and Minbu sub-basins in the Central Myanmar Depression. The Upper Cretaceous lower Kabaw Formation consists of turbiditic conglomerate, sandstone, and mudstone in the Minbu sub-basin. The composition of conglomerates are mainly schist and subordinate quartz. Prominent detrital zircon age probability peaks are between 260 and 223 Ma, similar with that of Upper Triassic Pane Chaung turbidites and Kanpetlet schist on the West Burma plate. In the upper Kabaw Formation, turbiditic volcanic-rich sandstones have major age populations ranging from 103 to 70 Ma in both Minbu and Chindwin sub-basins. The Paleocene slope environment Paunggyi Formation, which overlies the Kabaw Formation, mainly consists of conglomerate, sandstone, mudstone, and tuff beds in the Minbu sub-basin. In contrast, the Paunggyi Formation in the Chindwin sub-basin is composed of sandstone and mudstone; major detrital zircon age populations from the Paunggyi Formation are between 100 and 60 Ma. Eocene strata in both basins are composed mainly of shallow marine to delta sandstone and mudstone. Major detrital zircon age populations are 100-36 Ma and 600-500 Ma. The Late Cretaceous-Eocene ages from Upper Cretaceous-Eocene strata overlap with igneous crystallization ages from the Western Myanmar Arc. We propose that the Chindwin and Minbu sub-basins developed as parts of a forearc basin along the west flank of Western Myanmar Arc (present coordinate). The forearc basin initiated in Albian time atop the continental West Burma plate due to the formation of a structural high along the western margin of West Burma plate.
关键词	LARGER BENTHIC FORAMINIFERA INDO-BURMAN RANGES TECTONIC EVOLUTION ACCRETIONARY COMPLEX SEDIMENT PROVENANCE PONDAUNG FORMATION U-PB SUBDUCTION PALEOCENE MAGMATISM
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000530917400013
来源期刊	GEOLOGICAL SOCIETY OF AMERICA BULLETIN
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/259870
推荐引用方式 GB/T 7714	Cai, Fulong,Ding, Lin,Zhang, Qinghai,et al. Initiation and evolution of forearc basins in the Central Myanmar Depression[J]. 中国科学院青藏高原研究所,2020,132(5-6).
APA	Cai, Fulong.,Ding, Lin.,Zhang, Qinghai.,Orme, Devon A..,Wei, Honghong.,...&Sein, Kyaing.(2020).Initiation and evolution of forearc basins in the Central Myanmar Depression.GEOLOGICAL SOCIETY OF AMERICA BULLETIN,132(5-6).
MLA	Cai, Fulong,et al."Initiation and evolution of forearc basins in the Central Myanmar Depression".GEOLOGICAL SOCIETY OF AMERICA BULLETIN 132.5-6(2020).