globalchange  > 气候变化与战略
DOI: 10.1016/j.earscirev.2019.102966
论文题名:
Tectonostratigraphy of the Late Archean Dharwar Supergroup, Dharwar Craton, India: Defining a tectonic history from spatially linked but temporally distinct intracontinental and arc-related basins
作者: Krapež B.; Srinivasa Sarma D.; Ram Mohan M.; McNaughton N.J.; Rasmussen B.; Wilde S.A.
刊名: Earth Science Reviews
ISSN: 00128252
出版年: 2020
卷: 201
语种: 英语
中文关键词: Archean ; Back-arc basins ; Dharwar Craton ; Rift basins ; SHRIMP geochronology ; Tectonostratigraphy
英文关键词: Archean ; backarc basin ; geochronology ; SHRIMP dating ; siliciclastic deposit ; tectonic setting ; tectonostratigraphy ; turbidite ; volcanic rock ; volcaniclastic deposit ; Dharwar Craton ; India
英文摘要: The Dharwar Supergroup comprises the unconformity bound Bababudan and Chitradurga groups. The Bababudan Group, which is best preserved in the Western Dharwar Craton, records a divergent margin comprising a basalt-dominant intracontinental rift sequence, a shale-BIF drift sequence, and a sandstone-shale thermal-subsidence sequence. The rift stage evolved from ∼2765 Ma to ∼2720 Ma, whereas the succession was folded, uplifted and eroded during development of a convergent continental margin from ∼2680 Ma. Ocean opening was to the east or southeast. The Chitradurga Group records a two-stage back-arc basin behind an east-facing continental arc. Stage I evolved between ∼2609 Ma and ∼2582 Ma, and Stage II between ∼2582 Ma and ∼2540 Ma. The two stages are separated by a subaerial unconformity. Stage I comprises siliciclastic fluvial, shallow-marine and deep-marine sedimentary rocks and bimodal volcanic rocks. Stage I is best preserved in the Western Dharwar Craton, but there are equivalents in the Eastern Dharwar Craton. Stage II in the Western Dharwar Craton comprises deep-marine turbidites of siliciclastic and volcaniclastic provenance, and basaltic and felsic volcanic rocks. Volcanic Stage II sequences in the Eastern Dharwar Craton define an arc-adjacent position. Tectonically driven cyclic uplift and erosion were responsible for the mismatch between preserved stratigraphic thickness and time, particularly for Stage II sequences. A remnant of a <2540 Ma late-stage basin in the northeast of the Eastern Dharwar Craton defines a syncollisional tectonic setting. The Dharwar Supergroup was deformed in a SW-verging hinterland magmatic fold/thrust belt from ∼2540 Ma. © 2019 Elsevier B.V.
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/166131
Appears in Collections:气候变化与战略

Files in This Item:

There are no files associated with this item.


作者单位: College of Earth Sciences, Guilin University of Technology, Guilin, 541004, China; CSIR-National Geophysical Research Institute, Hyderabad-7, India; John de Laeter Centre for Isotope Research, Curtin University, Bentley, WA 6102, Australia; School of Earth Sciences, University of Western Australia, Crawley, WA 6009, Australia; School of Earth and Planetary Sciences, Curtin University, Bentley, WA 6102, Australia

Recommended Citation:
Krapež B.,Srinivasa Sarma D.,Ram Mohan M.,et al. Tectonostratigraphy of the Late Archean Dharwar Supergroup, Dharwar Craton, India: Defining a tectonic history from spatially linked but temporally distinct intracontinental and arc-related basins[J]. Earth Science Reviews,2020-01-01,201
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Krapež B.]'s Articles
[Srinivasa Sarma D.]'s Articles
[Ram Mohan M.]'s Articles
百度学术
Similar articles in Baidu Scholar
[Krapež B.]'s Articles
[Srinivasa Sarma D.]'s Articles
[Ram Mohan M.]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Krapež B.]‘s Articles
[Srinivasa Sarma D.]‘s Articles
[Ram Mohan M.]‘s Articles
Related Copyright Policies
Null
收藏/分享
所有评论 (0)
暂无评论
 

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.