التفاصيل البيبلوغرافية
| العنوان: |
Provenance analysis of the Tena Formation in the Anzu River, Puyo – Ecuador ; Análisis de procedencia de la Formación Tena en el río Anzu, Puyo – Ecuador |
| المؤلفون: |
Romero-Cóndor, Christian Wladimir, Cervantes-Gualuchico, Heidy Liliana, Oyague-Vergara, Emilio José, Heredia-Puente , Sofia Tatiana, Pazmiño-Aguiar , Paola Dominique, Proaño-Altamirano, Antonio Patricio, Ortiz-Mercado , María Angelica, Carranco-Andino , Fausto Rodolfo, Guerrero-Tamayo , Erick Javier, Martínez-Jimenez , Víctor Horacio |
| المصدر: |
Boletín de Ciencias de la Tierra; No. 55 (2024): January - June; 56 - 73 ; Boletín de Ciencias de la Tierra; Núm. 55 (2024): Enero - Junio; 56 - 73 ; 2357-3740 ; 0120-3630 |
| بيانات النشر: |
Universidad Nacional de Colombia - Sede Medellín - Facultad de Minas |
| سنة النشر: |
2024 |
| المجموعة: |
Universidad Nacional de Colombia: Portal de Revistas UN |
| مصطلحات موضوعية: |
geochemistry, petrography, heavy minerals, Tena formation, subandean zone, geoquímica, petrografía, minerales pesados, formación Tena, zona subandina |
| الوصف: |
The Upper Cretaceous sedimentary mega-sequence of the Oriente Basin (Ecuador) is composed of the Hollín, Napo, and Tena formations, which have been extensively studied due to their economic interest in the oil industry. However, the limited information regarding the petrographic and geochemical characteristics of the source rocks of the Tena Formation in the central and southern Subandean zone has generated uncertainty in the regional geological evolution model, particularly in the Maastrichtian to Paleocene interval. The Anzu River section, northwest of Puyo, provides the opportunity to analyze the provenance of the Tena Formation, exhibiting its stratigraphic sequence fully and continuously. With the purpose of defining the detrital source of the Tena Formation, this research details the lithostratigraphy, petrography, geochemistry, and heavy mineral association in the Anzu River section. Petrographic analysis reveals that the sandstones of the Tena Formation are lithic feldspathic arenites, lithic arkoses, and sub-litharenites, originating from sedimentary sources rich in quartz, with igneous and metamorphic influence. The associations of heavy minerals and concentrations of major, trace, and rare earth elements indicate that these sandstones mainly come from recycled sedimentary provinces, with influence from acidic igneous and metamorphic provinces. These sources would be linked to Andean regions that exhumed and assimilated tectonic blocks or wedges from the Oriente Basin during the onset of the Andean orogeny in the late Upper Cretaceous and early Paleocene; the erosion of these blocks controlled the detritus available for the sedimentation of the Tena Formation in the study area. ; La mega secuencia sedimentaria del Cretácico Superior de la cuenca Oriente en Ecuador se compone por las formaciones Hollín, Napo y Tena, que ha sido ampliamente estudiada debido a su interés económico en la industria petrolera. No obstante, la escasa información acerca de las características petrográficas y geoquímicas de las ... |
| نوع الوثيقة: |
article in journal/newspaper |
| وصف الملف: |
application/pdf |
| اللغة: |
Spanish; Castilian |
| Relation: |
https://revistas.unal.edu.co/index.php/rbct/article/view/112656/91941; https://revistas.unal.edu.co/index.php/rbct/article/view/112656 |
| الاتاحة: |
https://revistas.unal.edu.co/index.php/rbct/article/view/112656 |
| Rights: |
Derechos de autor 2024 Boletín de Ciencias de la Tierra ; https://creativecommons.org/licenses/by-nc-nd/4.0 |
| رقم الانضمام: |
edsbas.D33ABA88 |
| قاعدة البيانات: |
BASE |