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Integrated subsurface study on lithofacies and diagenetic controls over porosity distribution in the Upper Ordovician Trenton Limestone in Northwestern Ohio

Ahsan, Mustafa
http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1546435185616111

Abstract Details

2019, Master of Science (MS), Bowling Green State University, Geology.
Previous studies of the Upper Ordovician Trenton Limestone in northwestern Ohio interpreted an extensive subtidal carbonate platform on the northwest margin of Taconic foreland basin. This study focused on the subsurface facies analysis and paragenesis of the Trenton Limestone using eight different wells (3564, 20347, 2878, 2971, 2972, 2973, 3374, and 20239) in Hancock, Wood, and Wyandot counties. The wells were correlated using gamma-ray and density logs. Paragenesis was studied using petrography, SEM, EDAX, and cathodoluminescence. A total of 51 thin sections were used to study petrography, microfacies and diagenesis. Drill cores from two well sections (Core#3564 and Core# 3374) were used for lithofacies analysis. Cores 2878, 2971, and 2972 were used only for thin section analysis. The Trenton Limestone mainly consists of bioclastic carbonate (mudstone, wackestone, packstone, and grainstone) with minor amounts of siliciclastic shale. The dominant lithofacies, in order of importance, are heterolithic laminated carbonate mudstone and siliciclastic shale (lithofacies Cml) which are interpreted as tidalites, massive gray carbonate mudstone (Cmm), massive light gray carbonate mudstone with Stromatactis (Cms), massive bioclastic grainstone (Cgm) which are interpreted as storm layers, massive grainstone with lithoclasts (Cgm) which are interpreted as reworked beachrock, skeletal packstone (Cps), massive dolomicrite (Dmm) and massive dolograinstone (Dgm), alternation of planar laminated carbonate mudstone and wackestone (Cmw), alternation of skeletal packstone and skeletal mud/wackestone (Cpm), alternation of packstone and mudstone (Cmf), and carbonate wackestone (Cws). The presence of tidalites, mudcracks, lithoclasts, shell debris, and storm layers indicate that the Trenton Limestone in Northwestern Ohio was deposited in a peritidal carbonate ramp environment. Three lithofacies associations were the tempestite association lithofacies, back ramp lithofacies association and proximal deep ramp lithofacies association. The sequence of diagenesis has been interpreted to be: (1) bioturbation (2) authigenesis (glauconization and pyritization) (3) burial and moderate compaction (4) calcite cementation (5) micritization (6) silicification (7) dolomitization (8) late pyritization and, (9) dedolomitization. Different diagenetic features in the paragenetic sequence such as dolomitization, dissolution and dedolomitization helped in porosity creation and bitumen stains in their vicinity meant petroleum migration and accumulation. This knowledge may be used in future if any exploration work is undertaken.
James Evans, PhD (Advisor)
John Farver, PhD (Committee Member)
Jeffrey Snyder, PhD (Committee Member)
188 p.
Geology
diagenesis; paragenesis; trenton limestone; facies anaysis; microfacies; lithofacies; petrography; SEM; cathodoluminescence; carbonate rocks; porosity; petroleum geology;

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Citations

  • Ahsan, M. (2019). Integrated subsurface study on lithofacies and diagenetic controls over porosity distribution in the Upper Ordovician Trenton Limestone in Northwestern Ohio [Master's thesis, Bowling Green State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1546435185616111

    APA Style (7th edition)

  • Ahsan, Mustafa. Integrated subsurface study on lithofacies and diagenetic controls over porosity distribution in the Upper Ordovician Trenton Limestone in Northwestern Ohio. 2019. Bowling Green State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1546435185616111.

    MLA Style (8th edition)

  • Ahsan, Mustafa. "Integrated subsurface study on lithofacies and diagenetic controls over porosity distribution in the Upper Ordovician Trenton Limestone in Northwestern Ohio." Master's thesis, Bowling Green State University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1546435185616111

    Chicago Manual of Style (17th edition)

bgsu1546435185616111
749
© 2019, some rights reserved.Creative Commons License Integrated subsurface study on lithofacies and diagenetic controls over porosity distribution in the Upper Ordovician Trenton Limestone in Northwestern Ohio by Mustafa Ahsan is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License. Based on a work at etd.ohiolink.edu.
This open access ETD is published by Bowling Green State University and OhioLINK.