Session T13B. New Advances on the Geologic and Tectonic Framework of Colombia and Its Surrounding Regions I
The crustal evolution of Colombia is the result of multiple accretion deformation events that took place from Paleoproterozoic to Holocene, and modern interactions between the South American, Nazca, and Caribbean Plates. The longevity and diversity of its geological record make Colombia and surrounding regions suitable for studying local events and for understanding regional tectonic phenomena. The data acquired over the last 20 years provide an opportunity to rethink our understanding of the geologic and tectonic processes that have shaped the region. Such studies are critical to identify major challenges and explore strategies to address these in the future. This session aims to foster interdisciplinary exchanges and discussions about the geological evolution of Colombia and surrounding regions, but also to provide new research focuses and open opportunities for research collaborations. We welcome contributions at the local and regional scale that span tectonics, stratigraphy, sedimentology, geochronology, petrology, geophysics, paleontology, and related areas.
Chairs: Jorge GÓMEZ TAPIAS, Daniela MATEUS—ZABALA and Rubby Melissa LASSO—MUÑOZ
Session Type: Oral
Date and Time: Monday, 9 December 2019; 1:40 p.m. – 3:40 p.m.
Location: Moscone South; 155, Upper Mezz.
1:40 p.m.
| Tectonic setting in northwestern South America illuminated by a newly relocated earthquake catalog. German A. PRIETO and Daniel MARTÍNEZ.
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1:55 p.m.
| Construction of the Eastern Cordillera of Colombia: Insights from the sedimentary record. Brian K. HORTON, Mauricio PARRA and Andres MORA.
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2:10 p.m.
| Cenozoic tectonic evolution the Sierra Nevada de Santa Marta, northern Colombia. Mauricio PARRA, Sebastián ECHEVERRI, Ana María PATIÑO, Edward R. SOBEL, Kerry GALLAGHER and Andres MORA.
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2:25 p.m.
| The Colombian magmatic record of the Panama arc collision and subduction of the Nazca Plate. Agustin CARDONA, Santiago LEON, Christy B. TILL, Juan Sebastián JARAMILLO and Victor VALENCIA.
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2:40 p.m.
| Consequences of time–varying subduction geometry beneath Colombia. Lara S. WAGNER, Gaspar MONSALVE, Christy B. TILL, Agustin CARDONA, Brian K. HORTON, Andres MORA, Mauricio PARRA, Thorsten W. BECKER, Claudio FACCENNA and Marlena JONES.
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2:55 p.m.
| Late Silurian exhumation of the proto–Andean margin as determined from detrital U–Pb geochronology in the Perijá Range, northeastern Colombia. Alejandro PIRAQUIVE, Nicolas VILLAMIZAR, Carolina JIMENEZ, David CONTRERAS–FAYAD, Jimmy Alejandro MUÑOZ–ROCHA and Mary Luz PEÑA–URUEÑA.
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3:10 p.m.
| Stratigraphy, sedimentary signatures, and processes associated with the Chicxulub asteroid impact in the Gorgonilla Island K/Pg section. Hermann Dario BERMUDEZ, Vivi VAJDA, Francisco J. VEGA, Jose Antonio ARZ, Ignacio ARENILLAS, Timothy J. BRALOWER, Paul R. RENNE, Jose Vicente RODRÍGUEZ, Maria Ximena ZORRILA and Vicente GILABERT.
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3:25 p.m.
| Tectonic inheritance and the uplift of the northern Andes. Andres MORA, Camilo HIGUERA–DIAZ, Mauricio PARRA, Brian K. HORTON and Victor M. CABALLERO.
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