Santiago Leon, Agustin Cardona, Mauricio Parra, Edward Sobel, Juan S. Jaramillo, Johannes Glodny, Victor A. Valencia, David Chew, Camilo Montes, Gustavo Posada, Gaspar Monsalve, Andres Pardo-Trujillo
- A geological transect across the suture separating northwestern South America from the Panama Arc helps document the provenance and thermal history of both crustal domains and the suture zone. During middle Miocene, strata were being accumulated over the suture zone between the Panama Arc and the continental margin. Integrated provenance analyses of those middle Miocene strata show the presence of mixed sources that includes material derived from the two major crustal domains: the old northwestern South American orogens and the younger Panama Arc. Coeval moderately rapid exhumation of Upper Cretaceous to Paleogene sediments forming the reference continental margin is suggested from our inverse thermal modeling. Strata within the suture zone are intruded by similar to 12 Ma magmatic arc-related plutons, marking the transition from a collisional orogen to a subduction-related one. Renewed late Miocene to Pliocene acceleration of the exhumation rates is the consequence of a second tectonic pulse, which is likely to be triggered by theA geological transect across the suture separating northwestern South America from the Panama Arc helps document the provenance and thermal history of both crustal domains and the suture zone. During middle Miocene, strata were being accumulated over the suture zone between the Panama Arc and the continental margin. Integrated provenance analyses of those middle Miocene strata show the presence of mixed sources that includes material derived from the two major crustal domains: the old northwestern South American orogens and the younger Panama Arc. Coeval moderately rapid exhumation of Upper Cretaceous to Paleogene sediments forming the reference continental margin is suggested from our inverse thermal modeling. Strata within the suture zone are intruded by similar to 12 Ma magmatic arc-related plutons, marking the transition from a collisional orogen to a subduction-related one. Renewed late Miocene to Pliocene acceleration of the exhumation rates is the consequence of a second tectonic pulse, which is likely to be triggered by the onset of a flat-slab subduction of the Nazca plate underneath the northernmost Andes of Colombia, suggesting that late Miocene to Pliocene orogeny in the Northern Andes is controlled by at least two different tectonic mechanisms.…
MetadatenAuthor details: | Santiago LeonORCiD, Agustin Cardona, Mauricio ParraORCiD, Edward SobelORCiDGND, Juan S. JaramilloORCiD, Johannes GlodnyORCiD, Victor A. ValenciaORCiD, David ChewORCiD, Camilo MontesORCiD, Gustavo PosadaORCiD, Gaspar MonsalveORCiD, Andres Pardo-Trujillo |
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DOI: | https://doi.org/10.1002/2017TC004785 |
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ISSN: | 0278-7407 |
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ISSN: | 1944-9194 |
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Title of parent work (English): | Tectonics |
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Subtitle (German): | an example from neogene Panama-Nazca-South america interactions |
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Publisher: | American Geophysical Union |
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Place of publishing: | Washington |
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Publication type: | Article |
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Language: | English |
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Date of first publication: | 2017/12/22 |
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Publication year: | 2018 |
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Release date: | 2022/03/14 |
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Volume: | 37 |
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Issue: | 1 |
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Number of pages: | 21 |
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First page: | 119 |
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Last Page: | 139 |
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Funding institution: | Fundacion para la Promocion de la Investigacion y la Tecnologia (FPIT) [3.809]; Asociacion Colombiana de Geologos y Geofisicos del Petroleo (ACGGP); Corporacion Geologica Ares (Project "Paleogene Accretion-Deformation in Western Colombia: Implications in South-American Continental Growth and Andean Orogeny"); CAPESCAPES; FAPESPFundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) [2013/03265-5]; Colombian science foundation COLCIENCIAS [50491, 51686] |
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Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Geowissenschaften |
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DDC classification: | 5 Naturwissenschaften und Mathematik / 55 Geowissenschaften, Geologie / 550 Geowissenschaften |
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Peer review: | Referiert |
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Publishing method: | Open Access / Bronze Open-Access |
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