Por favor, use este identificador para citar o enlazar a este item:
http://hdl.handle.net/10261/218445
COMPARTIR / EXPORTAR:
SHARE CORE BASE | |
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE | |
Título: | Evidence of Hydrocarbon-Rich Fluid Interaction with Clays: Clay Mineralogy and Boron Isotope Data from Gulf of Cádiz Mud Volcano Sediments |
Autor: | Martos Villa, Rubén; Mata Campo, Maria Pilar; Williams, Lynda B.; Nieto, Fernando CSIC ORCID; Arroyo Rey, Xavier; Sainz-Díaz, C. Ignacio | Palabras clave: | Mud volcano B isotopes Illite–smectite Molecular modelling fluids Gulf of Cádiz Hydrocarbons |
Fecha de publicación: | 2020 | Editor: | Multidisciplinary Digital Publishing Institute | Citación: | Minerals 10(8): 651 (2020) | Resumen: | Clay dehydration at great depth generates fluids and overpressures in organic-rich sediments that can release isotopically light boron from mature organic matter, producing 10B-rich fluids. The B can be incorporated into the tetrahedral sites of authigenic illite during the illitization of smectite. Therefore, the crystal-chemical and geochemical characterization of illite, smectite or interlayered illite–smectite clay minerals can be an indicator of depth (temperature) and reactions with the basin fluids. The aim of this study was to determine the detailed clay mineralogy, B-content and isotopic composition in illite–smectite rich samples of mud volcanoes from the Gulf of Cádiz, in order to evaluate interactions of hydrocarbon-rich fluids with clays. Molecular modeling of the illite structure was performed, using electron density functional theory (DFT) methods to examine the phenomenon of B incorporation into illite at the atomic level. We found that it is energetically preferable for B to reside in the tetrahedral sites replacing Si atoms than in the interlayer of expandable clays. The B abundances in this study are high and consistent with previous results of B data on interstitial fluids, suggesting that hydrocarbon-related fluids approaching temperatures of methane generation (150 °C) are the likely source of B-rich illite in the studied samples. | Descripción: | © 2020 by the authors. | Versión del editor: | https://doi.org/10.3390/min10080651 | URI: | http://hdl.handle.net/10261/218445 | DOI: | 10.3390/min10080651 | E-ISSN: | 2075-163X |
Aparece en las colecciones: | (IACT) Artículos (IGME) Artículos |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
---|---|---|---|---|
Evidence_Martos_Art2020.pdf | 4,39 MB | Adobe PDF | Visualizar/Abrir |
CORE Recommender
SCOPUSTM
Citations
10
checked on 20-abr-2024
WEB OF SCIENCETM
Citations
11
checked on 18-feb-2024
Page view(s)
113
checked on 23-abr-2024
Download(s)
170
checked on 23-abr-2024
Google ScholarTM
Check
Altmetric
Altmetric
Este item está licenciado bajo una Licencia Creative Commons