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Age, provenance and tectonic setting of Dajin conglomerate, Tibet
Li, S (Li Shun)1,2; Ding, L (Ding Lin)1,3; Fu, JJ (Fu JiaJun)1,2; Yue, YH (Yue YaHui)1; Li, S
Source PublicationACTA PETROLOGICA SINICA
2016
Volume32Issue:11Pages:3537-3546
AbstractThe Dajin conglomerate that crops out along the southern foot of Mt. Kailas is a matter of concern because of the presence of larger benthic foraminifera in the strata. As the uncertainty of the depositional age, the tectonic setting of this unit is still in debate. In this study, the youngest age cluster of detrital zircons from Dajin conglomerate constrains the maximum depositional age of this unit to be Late Oligocene to Early Miocene (24 similar to 27Ma). Provenance data (field observation, sandstone petrology and detrital zircon U-Pb ages) indicate that the basal and top sections of Dajin conglomerate were derived directly from Gangdese arc, but the middle part of this unit (including the foraminiferal assemblages) was recycled from the Cuojiangding Group in the west. Dajin conglomerate is in conformable contact with the overlying Gangdese conglomerate. The age and provenance results of Dajin conglomerate are also consistent with Gangdese conglomerate. Therefore, we conclude that Dajin conglomerate is part of the Gangdese conglomerate. The strata of Dajin conglomerate are weakly deformed and mostly planar. This unit should be deposited in extensional tectonic regime, which might be related to the rollback and break-off of the down-going Indian plate during Late Oligocene to Early Miocene.
Subject Area地质学
WOS ID:000388278500022
Language英语
Indexed BySCI
KeywordFore-arc Basin Indo-asian Collision Tsangpo Suture Zone Zircon U-pb Southern Tibet Sedimentary History Gangdese Batholith Southwestern Tibet Volcanic-rocks Clastic Rocks
Cooperation Status国内
Department碰撞
SubtypeArticle
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Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itpcas.ac.cn/handle/131C11/7505
Collection图书馆
Corresponding AuthorLi, S
Affiliation1.Chinese Acad Sci, Inst Tibetan Plateau Res, Beijing 100101, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China
Recommended Citation
GB/T 7714
Li, S ,Ding, L ,Fu, JJ ,et al. Age, provenance and tectonic setting of Dajin conglomerate, Tibet[J]. ACTA PETROLOGICA SINICA,2016,32(11):3537-3546.
APA Li, S ,Ding, L ,Fu, JJ ,Yue, YH ,&Li, S.(2016).Age, provenance and tectonic setting of Dajin conglomerate, Tibet.ACTA PETROLOGICA SINICA,32(11),3537-3546.
MLA Li, S ,et al."Age, provenance and tectonic setting of Dajin conglomerate, Tibet".ACTA PETROLOGICA SINICA 32.11(2016):3537-3546.
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