| DOI: | 10.1016/j.earscirev.2018.11.009
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| 论文题名: | Archean fluvial deposits: A review |
| 作者: | Long D.G.F.
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| 刊名: | Earth Science Reviews
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| ISSN: | 00128252
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| 出版年: | 2019
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| 卷: | 188 | | 起始页码: | 148
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| 结束页码: | 175
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| 语种: | 英语
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| 英文关键词: | Archean
; craton
; deformation
; depositional environment
; fluvial deposit
; metamorphism
; mudstone
; piggyback basin
; plate tectonics
; water mass
; Africa
; Australia
; India
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| 英文摘要: | The recognition of Archean fluvial deposits is complicated in many cases by post depositional deformation and metamorphism. Most surviving deposits can be categorized as deposits of alluvial fans with and without debris flows, and sand and gravel-bed braided rivers. Examples of possible intermediate to high sinuosity meandering systems have been tentatively identified in Africa, Australia and India: all lack clear evidence of lateral migration and can be reinterpreted in terms of esturine deposition, shallow tide-influenced marine, and deep-water mass-flow deposits respectively. Mudstone intervals in Archean fluvial strata are rare, and where present, are typically of silt grade. These may represent ponds developed within channel thalwegs, or where more extensive may be of lacustrine rather than floodplain origin. Prior to 3.2 Ga preserved fluvial deposits appear to be largely confined to the flanks of volcanic cones or plateau, perhaps reflecting globally high sea level combined with the small-scale of cratonic nuclei. The onset of modern style plate tectonics in the early Mesoarchean allowed for more extensive generation and preservation of fluvial strata: most of these are first cycle deposits, preserved in rift, strike-slip, and foreland basins, with rare examples accumulating in forearc and syn-tectonic piggy-back basins. © 2018 Elsevier B.V. |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/165866
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| Appears in Collections: | 气候变化与战略
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作者单位: | Department of Earth Sciences, Laurentian University, Sudbury, ON, Canada
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| Recommended Citation: | |
Long D.G.F.. Archean fluvial deposits: A review[J]. Earth Science Reviews,2019-01-01,188
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