| DOI: | 10.1306/11111413138
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| Scopus记录号: | 2-s2.0-84941312843
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| 论文题名: | Precambrian-Pleistocene tectono-stratigraphic evolution of the southern Llanos Basin, Colombia |
| 作者: | Moreno-López M.C.; Escalona A.
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| 刊名: | AAPG Bulletin
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| ISSN: | 0149-1500
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| EISSN: | 1558-9230
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| 出版年: | 2015
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| 发表日期: | 2015
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| 卷: | 99, 期:8 | | 起始页码: | 1473
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| 结束页码: | 1501
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| 语种: | 英语
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| Scopus关键词: | Buildings
; Deformation
; Seismology
; Stratigraphy
; Submarine geology
; Tectonics
; Well logging
; Anticlinal structure
; Basin evolution
; Eastern Cordillera
; Eastern regions
; Paleoproterozoic
; Stratigraphic sequences
; Upper Cretaceous
; Upper Paleozoic
; Geochronology
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| Scopus学科分类: | Energy
; Earth and Planetary Sciences
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| 英文摘要: | The Llanos basin, located in the eastern region of Colombia, northwestern South America, is an Andean foreland basin between the Eastern Cordillera (Colombian Andes) and the Guyana Precambrian shield. The basin is the latest stage of a complex multiphase evolution that began in the Paleozoic at the latest. A Paleozoic-Pleistocene basin evolution model is presented based on a regional, two-dimensional, industry seismic data set and well-log observations for the southern part of the basin. Five tectono-stratigraphic sequences were identified: (1) lower Paleozoic depocenters preserved along inverted Neoproterozoic basement blocks; (2) an upper Paleozoic marine sequence folded and faulted in the late Paleozoic during assembly of Pangea; (3) Upper Cretaceous-Paleocene shallow marine sediments deposited in a distal foreland basin related to uplift of the Western and Central Cordilleras of Colombia, the sequence pinches out against a Paleozoic hinge or foreland bulge area; (4) an Eocene-Miocene foreland basin related to uplift of the Eastern Cordillera resulting in a wedge geometry; and (5) Pliocene-Pleistocene fluvial deltaic rocks overfilling the foreland basin. Reactivation of Paleozoic structures occurs at the top of this sequence with the development of anticlinal structures. Present-day stress fields indicate that subduction of the Nazca plate beneath South America may be responsible for reactivation of Paleozoic structures. Inversion of north-south structures with the Neoproterozoic basement is interpreted to be responsible for the Paleozoic and Pleistocene deformation, whereas Cenozoic deformation is related to the two main stages of foreland development of the basin. To the east, where the Paleoproterozoic basement is present, no deformation is interpreted. Copyright ©2015. The American Association of Petroleum Geologists. All rights reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84941312843&doi=10.1306%2f11111413138&partnerID=40&md5=4484cde0eb861321c5247fb99948e4af
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| Citation statistics: |
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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/13071
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| Appears in Collections: | 过去全球变化的重建
影响、适应和脆弱性
科学计划与规划
气候变化与战略
全球变化的国际研究计划
气候减缓与适应
气候变化事实与影响
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| Recommended Citation: | |
Moreno-López M.C.,Escalona A.. Precambrian-Pleistocene tectono-stratigraphic evolution of the southern Llanos Basin, Colombia[J]. AAPG Bulletin,2015-01-01,99(8)
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