Academic Journal
Contourite channels: facies model and channel evolution
| العنوان: | Contourite channels: facies model and channel evolution |
|---|---|
| المؤلفون: | Weger, Wouter de, Hernández-Molina, Francisco J., Sierro, Francisco Javier, Chiaella, Domenico, Llave, Estefanía, Fedele, Juan J., Rodríguez Tovar, Francisco J., Míguez-Salas, Olmo, Manar, Mohamed Amine |
| المساهمون: | Total, British Petroleum, Eni, Exxon Mobil Corporation, Wintershall DEA, TGS, Ministerio de Educación, Cultura y Deporte (España), Weger, Wouter de, Chiaella, Domenico, Llave, Estefanía |
| بيانات النشر: | John Wiley & Sons |
| سنة النشر: | 2023 |
| المجموعة: | Digital.CSIC (Consejo Superior de Investigaciones Científicas / Spanish National Research Council) |
| مصطلحات موضوعية: | Bottom currents, Contourite channel system, Contouritic drifts, Deep-water sedimentation, Facies models, Late Miocene, Morocco, Rifian Corrrido, Tides |
| الوصف: | [EN] Despite the rise in published evidence of deep-marine bottom current processes and associated deposits there are still very few documented outcrop examples. Herein are reported results of a contourite channel system related to the late Miocene palaeo-Mediterranean Outflow Water in the Rifian Corridor, Morocco. This work aims to unravel the sedimentary evolution and facies distribution based on the study of large morphological features related to contourite channels and their subsequent sandstone dominated infill sequences. It was found that the channel evolution and facies distribution are related to spatiotemporal changes in flow characteristics of the palaeo-Mediterranean Outflow Water. The recognized channel facies distribution correlates well with previously established bedform stability diagrams. Erosion and upper-stage flow regime bedforms are associated with the most vigorous bottom currents, generally related to its core. Laterally, following the decrease in flow velocity towards the adjacent drift, bedforms comprise dunes, lower-stage plane bedforms and more heterolithic facies. Similar facies changes are also observed down-channel, related to a decrease in flow velocities resulting from turbulent mixing of water masses, associated decreases in density gradients and the subsequent deceleration due to gravity. Results of this work have been used to propose a three-dimensional facies model for channelized sandy contourites. This study contributes to understanding contourite systems, thus benefitting oceanographic and climatic reconstructions as well as aiding the predictability of contourite channel systems for industry geoscience applications. ; This project was funded by the Joint Industry project supported by Total, BP, ENI, ExxonMobil, Wintershall DEA and TGS, executed in the framework of ‘The Drifters Research Group’ at Royal Holloway University of London (RHUL). The research contribution of O. Miguez-Salas was funded through a pre-doctoral grant from the Ministerio de Educacion, Cultura y ... |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | application/pdf |
| اللغة: | English |
| تدمد: | 0037-0746 1365-3091 |
| Relation: | Publisher's version; https://doi.org/10.1111/sed.13042; Sí; Sedimentology 70 (3): 611-644 (2023); http://hdl.handle.net/10261/339344 |
| DOI: | 10.1111/sed.13042 |
| الاتاحة: | http://hdl.handle.net/10261/339344 https://doi.org/10.1111/sed.13042 |
| Rights: | open |
| رقم الانضمام: | edsbas.E03446E |
| قاعدة البيانات: | BASE |
| تدمد: | 00370746 13653091 |
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| DOI: | 10.1111/sed.13042 |