Thesis (Ph. D.)--University of Wisconsin--Madison, 1950. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 170-177).

Thesis (M.S.)--West Virginia University, 2000. / Title from document title page. Document formatted into pages; contains viii, 152 p. : ill. (some col.), maps. Includes abstract. Includes bibliographical references (p. 62-64).

Thesis (M.S.)--Pennsylvania State University, 1960. / Includes bibliographical references (leaves 86-91).

Thesis (Ph. D.)--Johns Hopkins University, 1913. / Biography. Reprinted from vol. 1 of Upper Cretaceous, pub. by the Maryland geological survey.

<p> The Middle Devonian Marcellus Shale is a natural gas producing formation that was deposited in the Appalachian foreland basin in what is now eastern North America. An unconformity truncates the Marcellus in southern West Virginia and progressively younger units onlap progressively older units. The zero isopach line that marks the edge of the Marcellus is mapped to reveal the southeastern boundary. A well production analysis is conducted to locate the region of maximum natural gas production. Four lithologic completions intervals in three different well fields are compared. This study shows that the most economically viable drilling is from the Marcellus Shale completion intervals that are less than 30 feet in Chapmanville gas field in western Logan County, West Virginia. Outside of the zero isopach are areas comprised of onlapping featheredges of younger formations that comprise a black shale unit mistakenly identified as &ldquo;Marcellus Shale&rdquo;. These areas produce significantly less gas than the &ldquo;true&rdquo; Marcellus Shale.</p>

<p> Integrated analysis of well and geophysical data can provide detailed geologic interpretation of the subsurface in Osage County, Oklahoma. Systems tracts and depositional system successions can be interpreted at marginal seismic resolution using well log motif with seismic reflector character within a depositional context. Shelf-prism and subaqueous, delta-scale clinoforms of Missourian age observed in 3D seismic were interpreted with greater sequence stratigraphic detail when coupled with wireline well logs. The Late Pennsylvanian Midcontinent Sea was thought to be approximately 150 feet average depth across the southern Midcontinent during the Missourian Stage, and deepen towards the Arkoma and Anadarko Basins to the south. Here we show that the Late Pennsylvanian Midcontinent Sea floor was in water depths greater than 600 feet and sloped to the southeast, toward major, southern basins, during the Missourian Stage in Osage County. Shelf-prism and delta scale clinoforms up to 600 and 300 feet of relief, respectively, were observed in paired seismic and well log cross sections, thickness maps, and structure maps dipping northwest at 052&deg; strike, upon a basin floor dipping southeast at 253&deg; strike. Lithologic and sequence stratigraphic interpretation revealed a mixed carbonate-siliciclastic system comprising of delta, offshore shelf, and carbonate buildup depositional systems of mesothem, 3rd order sequence magnitude. The observed succession included: 1) falling stage to lowstand, sand-prone, subaqueous delta, 2) transgressive to highstand offshore shelf and carbonate bank, and 3) falling stage delta. The depositional sucession demonstrates how carbonate banks related spatially to terrigenous sediment input in northeastern Oklahoma during the Late Pennsylvanian because of glacio-eustasy and possible tectonism.</p><p>

No description available.

<p> The Tuscaloosa Marine Shale (TMS) in southwest Mississippi and south-central Louisiana has potential to become a prolific source of fossil fuels using hydraulic fracturing technology. The objective of this study is to better understand the sequence and regional stratigraphy, lithology, and character of the TMS. Studying the TMS&rsquo;s lithologic, depositional, and diagenetic properties is essential to maximize potential production. Characterization of the eastern TMS was performed with cuttings from two wells provided by the Mississippi Oil and Gas Board through MDEQ, and two provided by the USGS. Thirty-one petrophysical logs were correlated, to make cross sections and trace sequence stratigraphic intervals within the TMS. Results of the study showed lithologic variability and compaction across the study area, and a sequence stratigraphic correlation of the highstand systems track between the Tuscaloosa and Eagle Ford Groups. This research aims to work toward the greatest potential of the TMS as an unconventional reservoir.</p><p>

<p> Over the past 70 years the Mississippian strata of Northwest Arkansas have been studied in great detail. The study area is located on the escarpment between the Boston Mountains Plateau and the Springfield Plateau where a surface occurrence of Mississippian age rock allows for access to outcrops in close proximity to gas wells that encounter subsurface Mississippian strata. Many outcrops found in Northwest Arkansas expose Lower Mississippian (Kinderhookian-Osagean) strata that represent a full third order transgressive/regressive sequence that is unconformity bounded. These Mississippian outcrops are commonly treated as surface analogs to the Mississippi Lime Play in North Central Oklahoma. This thesis focuses on the analysis of Boone tripolitic chert in the subsurface utilizing wireline data available from selected gas wells within the study area. The primary goal of this project is to determine and quantify the subsurface stratigraphic position of tripolitic chert from wells that cut a complete section of the Boone Formation. 24 of the 27 (89%) wells within the study with bulk density logs penetrated a substantial section of the Boone Formation and confirmed the presence of tripolite through a density value less than 2.1 g/cc. </p><p> Analysis of wireline data from selected wells is used to characterize the Mississippian system with a specific focus on the distribution of tripolitic chert. Correlation of Mississippian gas production to tripolitic chert occurrence along with the correlation of subsurface data with outcrop data are secondary objectives.</p><p>

<p> In the Roberts Mountains of north-central Nevada, several large masses of the autochthonous carbonate succession overlie the highly deformed siliciclastic succession of the Roberts Mountains allochthon (RMA). These carbonate masses, or tectonic erratics, were plucked from the underlying autochthon and carried in the base of the upper plate of the post-Antler Orogeny Henderson thrust as it ramped structurally upwards and eastwards. Kinematic indicators in the form of folds and fractures within the carbonate masses at Henderson Summit, Vinini Creek, Mineral Hill, and Lone Mountain show a general eastward stress direction. Intense brecciation is observed in the lower parts of the carbonate masses and in the immediately underlying siliciclastic strata of the RMA. Based on observations and kinematic evidence, the carbonate masses at Henderson Summit, Vinini Creek, Mineral Hill, and Lone Mountain are interpreted to be tectonic erratics, which in turn further supports and extends the tectonic erratic hypothesis.</p><p>