Articles producció científica> Història i Història de l'Art

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

  • Identification data

    Identifier: imarina:9217447
    Handle: https://hdl.handle.net/20.500.11797/imarina9217447
    Authors:
    J MiróMaría José JuradoOriol Oms LlobetJuan Diego Martín MartínJordi IbáñezPere Anadón MonzónJ CrespoB Gómez de SolerG CampenyJordi Agustí i Ballester
    Abstract:
    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.

  • Others:

    Author, as appears in the article.: 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
    Department: Història i Història de l'Art
    URV's Author/s: Agusti Ballester, Jorge
    Abstract: 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.
    Thematic Areas: Geografía
    licence for use: https://creativecommons.org/licenses/by/3.0/es/
    Author's mail: jorge.agusti@urv.cat
    Author identifier: 0000-0002-7240-1992
    Record's date: 2023-04-15
    Papper version: info:eu-repo/semantics/publishedVersion
    Link to the original source: https://sge.usal.es/archivos/GEO_TEMAS/Geo_temas16_ss_simposios.pdf
    Papper original source: Geotemas (Madrid). (16): 575-578
    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
    Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
    Entity: Universitat Rovira i Virgili
    Journal publication year: 2016
    Publication Type: Journal Publications