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Deposition, stratigraphy, provenance...

Franklin Dykes, Alyssa.

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Deposition, stratigraphy, provenance, and reservoir characterization of carbonate mudstones: The Three Forks formation, Williston Basin.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Deposition, stratigraphy, provenance, and reservoir characterization of carbonate mudstones: The Three Forks formation, Williston Basin./
Author:	Franklin Dykes, Alyssa.
Description:	185 p.
Notes:	Source: Dissertation Abstracts International, Volume: 76-04(E), Section: B.
Contained By:	Dissertation Abstracts International76-04B(E).
Subject:	Geology. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3667695
ISBN:	9781321419641

Deposition, stratigraphy, provenance, and reservoir characterization of carbonate mudstones: The Three Forks formation, Williston Basin.
Franklin Dykes, Alyssa.

Deposition, stratigraphy, provenance, and reservoir characterization of carbonate mudstones: The Three Forks formation, Williston Basin. - 185 p.

Source: Dissertation Abstracts International, Volume: 76-04(E), Section: B.

Thesis (Ph.D.)--Colorado School of Mines, 2014.

This item is not available from ProQuest Dissertations & Theses.

This thesis uses a drill core database from a 250 square mile area of North Dakota and Montana to evaluate the depositional environment, stratigraphic development, provenance, and reservoir quality of the Famennian Three Forks carbonate mudstones.

ISBN: 9781321419641Subjects--Topical Terms:

516570
Geology.

Deposition, stratigraphy, provenance, and reservoir characterization of carbonate mudstones: The Three Forks formation, Williston Basin.
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020 $a 9781321419641
035 $a (MiAaPQ)AAI3667695
035 $a AAI3667695
040 $a MiAaPQ $c MiAaPQ
100 1 $a Franklin Dykes, Alyssa. $3 3174001
245 1 0 $a Deposition, stratigraphy, provenance, and reservoir characterization of carbonate mudstones: The Three Forks formation, Williston Basin.
300 $a 185 p.
500 $a Source: Dissertation Abstracts International, Volume: 76-04(E), Section: B.
500 $a Advisers: J. Frederick Sarg; Steve Sonnenberg.
502 $a Thesis (Ph.D.)--Colorado School of Mines, 2014.
506 $a This item is not available from ProQuest Dissertations & Theses.
506 $a This item must not be sold to any third party vendors.
520 $a This thesis uses a drill core database from a 250 square mile area of North Dakota and Montana to evaluate the depositional environment, stratigraphic development, provenance, and reservoir quality of the Famennian Three Forks carbonate mudstones.
520 $a Depositional environments and lithofacies include the following. Schizohaline, storm dominated intrashelf deposits defined by disturbed claystone, dolomudstone, sandstone, laminated mudstone, and distorted to brecciated dolomudstone lithofacies. These lithofacies often contain syneresis cracks, desiccation cracks, high depositional rate features such as convolute bedding and load features, and many scours. Ichnofacies vary from fairweather mobile and sessile feeding traces, early post-storm event escape traces, post-event opportunistic colonizers, and a final return to fairweather colonies. Arid shallow shelf deposits form during times of minimal fluvial and resultant minimal siliciclastic input into the basin, as well as times of evaporation conducive to broad salina, evaporative gypsum deposits. Mudflats rim these two shelf environments. During arid times they commonly contain abundant syndepositional nodular anhydrites and during less arid times they are full of intraclasts that range in abundance and size. Significant autogenic organization of these deposits is inferred to result in high frequency facies variability due to geomorphologic buildups. A major allogenically controlled shift progresses upwards in the stratigraphy as the deposits decrease in evidence of aridity and increase in evidence of fluvial inputs.
520 $a Detailed correlations and calibrations to regional biostratigraphic studies delineate seven third-order transgressive-regressive cycles within the formation. Calibration to the biostratigraphic timescale facilitates comparison of 87 Sr/ 86 Sr data to eustatic trends. These data indicate freshwater inputs that also provide more radiogenic Sr than the well-mixed global curve. Additionally delta 34 S values across chronostratigraphically equivalent Famennian deposits in western North America corroborate this conclusion.
520 $a Quantitative mineralogy trends, siliciclastic grain size comparisons, and epsilonNd values support a primary fluvial system of sediments derived and progressively recycled from the Ellesmerian and Caledonian orogens north of the Canadian Shield as the primary siliciclastic sources. Some petrographic trends however do suggest some ephemeral drainage behavior from multiple directions surrounding the basin. Gypsum converted to anhydrite was precipitated directly from the fluvially-modified seawater indicated by radiogenically enriched 87 Sr/ 86 Sr values. Dolomites predominantly formed as automicrites through freshwater mixing and meso- to hypersaline reflux based on elevated 87 Sr/ 86 Sr values, fluvial input evidence including syneresis and sand pulses, ichnofacies and bedded evaporites. Automicrite nucleated through biological processes attributed to unique chemical conditions in the intrashelf basin.
520 $a Details regarding the geologic formation of these rocks have significant implications for understanding controls on reservoir matrix characteristics. Heterogeneous samples with smaller grain sizes, variable sedimentary structures, or clay mottles consistently have superior reservoir quality than larger siliciclastic grain sizes, or homogenous textured samples. Subtle differences in pore sizes, shapes and resultant interconnectivity determine the potential for matrix oil saturation. Mercury porosimetry and nitrogen adsorption and desorption data indicate that for oil saturation to occur in this formation the reservoir matrix requires either high volumes of moderately sized nanopores with moderate connectivity or a moderate volume of large nanopores with some connectivity. Oil saturations in matrix with reservoir bitumen or in poor matrix quality that does not meet these criteria may be difficult to actually produce.
590 $a School code: 0052.
650 4 $a Geology. $3 516570
650 4 $a Sedimentary geology. $3 3173828
650 4 $a Petroleum engineering. $3 566616
690 $a 0372
690 $a 0594
690 $a 0765
710 2 $a Colorado School of Mines. $b Geology and Geological Engineering. $3 2094087
773 0 $t Dissertation Abstracts International $g 76-04B(E).
790 $a 0052
791 $a Ph.D.
792 $a 2014
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3667695