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Borehole image techniques applied to identification of chert and dolomite layers in lacustrine sediments

  • Datos identificativos

    Identificador: imarina:9217447
    Handle: https://hdl.handle.net/20.500.11797/imarina9217447
    Autores:
    J MiróMaría José JuradoOriol Oms LlobetJuan Diego Martín MartínJordi IbáñezPere Anadón MonzónJ CrespoB Gómez de SolerG CampenyJordi Agustí i Ballester
    Resumen:
    Geophysical logging tools, particularlyultrasonic acoustic borehole image techniques, are applied on two different wells (CP1 and CP2) to identify and characterize the lacustrine interval (40m) of the Camp dels Ninots maar -diatreme infill (Pliocene, Catalan Coastal Ranges). The CP1 well was cored and also geophysical logs and oriented borehole images were acquired. CP2 hole was partially cored but logging (geophysics and borehole images) was fully undertaken. Continuous core recovery in CP1 is compared with oriented images and is further used to identify and characterize highly reflective signals in a section of CP2 borehole that was not cored. These signals are related to silicified zones and belong to discontinuous centimetric chert nodules, while indurated massive carbonates are characterized as intervals of continuous reflectance. Despite opal nodules (chert) can be relatively small, they have a distinctive response in the ultrasonic borehole images.

  • Otros:

    Autor según el artículo: J Miró; María José Jurado; Oriol Oms Llobet; Juan Diego Martín Martín; Jordi Ibáñez; Pere Anadón Monzón; J Crespo; B Gómez de Soler; G Campeny; Jordi Agustí i Ballester
    Departamento: Història i Història de l'Art
    Autor/es de la URV: Agusti Ballester, Jorge
    Resumen: Geophysical logging tools, particularlyultrasonic acoustic borehole image techniques, are applied on two different wells (CP1 and CP2) to identify and characterize the lacustrine interval (40m) of the Camp dels Ninots maar -diatreme infill (Pliocene, Catalan Coastal Ranges). The CP1 well was cored and also geophysical logs and oriented borehole images were acquired. CP2 hole was partially cored but logging (geophysics and borehole images) was fully undertaken. Continuous core recovery in CP1 is compared with oriented images and is further used to identify and characterize highly reflective signals in a section of CP2 borehole that was not cored. These signals are related to silicified zones and belong to discontinuous centimetric chert nodules, while indurated massive carbonates are characterized as intervals of continuous reflectance. Despite opal nodules (chert) can be relatively small, they have a distinctive response in the ultrasonic borehole images.
    Áreas temáticas: Geografía
    Acceso a la licencia de uso: https://creativecommons.org/licenses/by/3.0/es/
    Direcció de correo del autor: jorge.agusti@urv.cat
    Identificador del autor: 0000-0002-7240-1992
    Fecha de alta del registro: 2023-04-15
    Versión del articulo depositado: info:eu-repo/semantics/publishedVersion
    Enlace a la fuente original: https://sge.usal.es/archivos/GEO_TEMAS/Geo_temas16_ss_simposios.pdf
    Referencia al articulo segun fuente origial: Geotemas (Madrid). (16): 575-578
    Referencia de l'ítem segons les normes APA: J Miró; María José Jurado; Oriol Oms Llobet; Juan Diego Martín Martín; Jordi Ibáñez; Pere Anadón Monzón; J Crespo; B Gómez de Soler; G Campeny; Jordi (2016). Borehole image techniques applied to identification of chert and dolomite layers in lacustrine sediments. Geotemas (Madrid), (16), 575-578
    URL Documento de licencia: https://repositori.urv.cat/ca/proteccio-de-dades/
    Entidad: Universitat Rovira i Virgili
    Año de publicación de la revista: 2016
    Tipo de publicación: Journal Publications