| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5782030 | Marine and Petroleum Geology | 2017 | 53 Pages |
Abstract
The location of the source area of sediment was determined using U-Pb detrital zircon dating. Provenance ages are uniform within the M1 Sandstone cluster in a population that ranges from 1.4 to 1.6 billion years. These ages indicate that sands were derived mostly from erosion of the lithotectonic Rio Negro-Jurena province, located to the northeast of the studied area. Detrital ages from the overlying Maastrichtian Tena Formation include ages between 80 and 200 Ma pointing to an important change in the source areas, located in the Eastern Cordillera of Ecuador. The change in sediment supply from east to west recorded in the Tena Formation coincide with the initial episodes of the Andean orogeny, and may be driven by the collision of fragments of the Caribbean large igneous province (CLIP) against the continental margin of northwestern South America.
Keywords
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Authors
Cristian Vallejo, Diego Tapia, Janeth Gaibor, Ron Steel, Mario Cardenas, Wilfried Winkler, Anne Valdez, Jose Esteban, Mariana Figuera, Jose Leal, Dario Cuenca,