干旱区生态环境知识资源中心(Arid): A Middle to Late Miocene Trans-Andean Portal: Geologic Record in the Tatacoa Desert

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DOI	10.3389/feart.2020.587022
	A Middle to Late Miocene Trans-Andean Portal: Geologic Record in the Tatacoa Desert
	Montes, C.; Silva, C. A.; Bayona, G. A.; Villamil, R.; Stiles, E.; Rodriguez-Corcho, A. F.; Beltran-Trivino, A.; Lamus, F.; Munoz-Granados, M. D.; Perez-Angel, L. C.; Hoyos, N.; Gomez, S.; Galeano, J. J.; Romero, E.; Baquero, M.; Cardenas-Rozo, A. L.; von Quadt, A.
通讯作者	Montes, C (corresponding author), Univ Norte, Barranquilla, Colombia.
来源期刊	FRONTIERS IN EARTH SCIENCE
EISSN	2296-6463
出版年	2021
卷号	8
英文摘要	Integration of several geologic lines of evidence reveals the prevalence of a lowland trans-Andean portal communicating western Amazonia and the westernmost Andes from at least middle Miocene until Pliocene times. Volcanism and crustal shortening built up relief in the southernmost Central and Eastern Cordilleras of Colombia, closing this lowland gap. Independent lines of evidence consist first, of field mapping in the Tatacoa Desert with a coverage area of similar to 381 km(2), 1,165 km of geological contact traces, 164 structural data points, and 3D aerial digital mapping models. This map documents the beginning of southward propagation of the southernmost tip of the Eastern Cordillera's west-verging, fold-and-thrust belt between similar to 12.2 and 13.7 Ma. Second, a compilation of new and published detrital zircon geochronology in middle Miocene strata of the Tatacoa Desert shows three distinctive age populations: middle Miocene, middle Eocene, and Jurassic; the first two sourced west of the Central Cordillera, the latter in the Magdalena Valley. Similar populations with the three distinctive peaks have now been recovered in western Amazonian middle Miocene strata. These observations, along with published molecular and fossil fish data, suggest that by Serravallian times (similar to 13 Ma), the Northern Andes were separated from the Central Andes at similar to 3 degrees N by a fluvial system that flowed into the Amazon Basin through the Tatacoa Desert. This paleogeographic configuration would be similar to a Western Andean, or Maranon Portal. Late Miocene flattening of the subducting Nazca slab caused the eastward migration of the Miocene volcanic arc, so that starting at similar to 4 Ma, large composite volcanoes were built up along the axis of today's Central Cordillera, closing this lowland Andean portal and altering the drainage patterns to resemble a modern configuration.
英文关键词	Northern Andes Andes miocene drainages La Venta portal Magdalena valley
类型	Article
语种	英语
开放获取类型	Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:000611589900001
WOS关键词	MAGDALENA VALLEY BASIN ; NORTHERN ANDES ; EASTERN CORDILLERA ; FORELAND-BASIN ; REGIONAL PROVENANCE ; TECTONIC EVOLUTION ; SEDIMENTARY-ROCKS ; U-PB ; COLOMBIA ; UPLIFT
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/347897
作者单位	[Montes, C.; Lamus, F.; Hoyos, N.; Galeano, J. J.] Univ Norte, Barranquilla, Colombia; [Silva, C. A.; Stiles, E.; Gomez, S.; Romero, E.] Smithsonian Trop Res Inst, Ctr Trop Paleoecol & Archaeol, Ancon, Panama; [Bayona, G. A.; Baquero, M.] Corp Geol Ares, Bogota, Colombia; [Villamil, R.; Munoz-Granados, M. D.] Univ Los Andes, Dept Geociencias, Bogota, Colombia; [Stiles, E.] Univ Washington, Dept Biol, Seattle, WA 98195 USA; [Rodriguez-Corcho, A. F.] Univ Melbourne, Schoool Earth Sci, Melbourne, Vic, Australia; [Beltran-Trivino, A.; Gomez, S.; Romero, E.; Cardenas-Rozo, A. L.] Univ EAFIT, Dept Ciencias Tierra, Medellin, Colombia; [Perez-Angel, L. C.] Univ Colorado, Cooperat Inst Res Environm Sci CIRES, Inst Arctic & Alpine Res INSTAAR), Dept Geol Sci, Boulder, CO 80309 USA; [von Quadt, A.] Swiss Fed Inst Technol, Dept Earth Sci, Inst Geochem & Petrol, Zurich, Switzerland
推荐引用方式 GB/T 7714	Montes, C.,Silva, C. A.,Bayona, G. A.,et al. A Middle to Late Miocene Trans-Andean Portal: Geologic Record in the Tatacoa Desert[J],2021,8.
APA	Montes, C..,Silva, C. A..,Bayona, G. A..,Villamil, R..,Stiles, E..,...&von Quadt, A..(2021).A Middle to Late Miocene Trans-Andean Portal: Geologic Record in the Tatacoa Desert.FRONTIERS IN EARTH SCIENCE,8.
MLA	Montes, C.,et al."A Middle to Late Miocene Trans-Andean Portal: Geologic Record in the Tatacoa Desert".FRONTIERS IN EARTH SCIENCE 8(2021).