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    Diagenesis of Middle Tertiary carbonates in the Toa Baja Well, Puerto Rico

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    GonzalezLA_GRL_18(3)513.pdf (386.5Kb)
    Issue Date
    1991-03-01
    Author
    Gonzalez, Luis A.
    Ruiz, Héctor M.
    Publisher
    American Geophysical Union
    Type
    Article
    Article Version
    Scholarly/refereed, publisher version
    Metadata
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    Abstract
    The Toa Baja Well drilled in northern Puerto Rico to adepth of 2705 m (8872 ft.) penetrated over 550 m (1800 ft.) of Tertiary carbonates. The limestone-dominated portion of the well consists mostly of shallow-water backreef carbonates. Metastable carbonates have been either calcitized, dolomitized or dissolved. The pétrographie character of the Tertiary carbonates in the Toa Baja Well, and those reported by Monroe [1980], the cathodoluminescence petrography, and the stable isotopic compositions indicate that these carbonates were rapidly cemented in the marine environment (limiting compaction), that replacement of metastable carbonates by calcite and precipitation of sparry calcite took place mostly in meteoric diagenetic environments and dolomitization probably occurred in a meteoric-marine mixing zone. Given the history of numerous drainage systems that dissected the Tertiary carbonates throughout their depositional history [Monroe, 1980] and the repeated Cenozoic sea level oscillations [Monroe, 1980; Seiglie and Moussa, 1984], it is likely that alteration of metastable carbonates took place during lowstands. Interstratified fluvial deposits suggest the continued influence of meteoric fluids in local highlands [Monroe, 198O].
    Description
    This is the publisher's version, also available electronically from "http://onlinelibrary.wiley.com".
    URI
    http://hdl.handle.net/1808/17037
    DOI
    https://doi.org/10.1029/91GL00397
    ISSN
    0094-8276
    Collections
    • Geology Scholarly Works [245]
    Citation
    González, L., & Ruiz, H. (1991). Diagenesis of Middle Tertiary carbonates in the Toa Baja Well, Puerto Rico. Geophysical Research Letters, 18(3), 513-516, http://www.dx.doi.org/10.1029/91GL00397

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    Contact KU ScholarWorks
    785-864-8983
    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    785-864-8983

    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    Image Credits
     

     

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