Download or read book Early and Middle Atokan Lithostratigraphy and Reservoir Development Northern Arkoma Basin Northwestern Arkansas written by Matthew Alan Blaylock and published by . This book was released on 2016 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Arkoma Basin is a peripheral foreland arc basin associated with the Ouachita orogenic belt. In Arkansas, the basin is bounded by the Ouachita belt to the south and the Ozark Dome to the north. Sedimentary rocks of early to middle Atokan age are present in the shallow subsurface at the northern margin of the Arkoma Basin in northwestern Arkansas. Sedimentary units of this time interval reflect basinal subsidence, and the transition of the Arkoma Basin from a passive margin shelf to a rapidly evolving foreland arc basin. Sediment sources from the north and east produced a thickened Lower and Middle Atoka record across the basin. Using PETRA, wireline logs were used to construct two sets of stratigraphic cross-sections that document the depositional changes that occurred during Arkoma Basin subsidence and associated structural events in northwestern Arkansas. Both sets of cross-sections extend west to east with one set in the north: cross-section North and the other set in the south: cross-section South. The Lower Atoka, Areci and Tackett were each deposited as a discrete interval, but the component sands of each unit are different reflecting different environment dynamics and sources. This explains why gas reservoir development in the Atoka Formation of the Arkoma Basin is so variable.
Download or read book Structural and Stratigraphic Transition from the Arkoma Shelf Into the Arkoma Basin During Basin Subsidence Arkoma Basin Northwest Arkansas written by Elizabeth Whitney Studebaker and published by . This book was released on 2014 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Arkoma basin is an arcuate Paleozoic structural feature in the Ouachita foreland that extends from central Arkansas and westward into southeastern Oklahoma. The Arkoma shelf lies immediately north of the basin and is comprised of Cambrian to Pennsylvanian age sedimentary rocks. In northwestern Arkansas, the stratigraphic and structural transition from the shelf into the northern portion of the Arkoma basin is poorly defined. Wireline logs were used to construct a series of three north to south cross sections, as well as two along-strike west to east cross sections to examine Morrowan and lower Atokan age strata. In addition to cross sections, isopach and structural contour maps were constructed from wireline log correlation. North to south cross sections display thickening to the south, particularly with sandstone and shale units. West to east cross sections exhibit thickening to the east due to proximity to an eastern terrigenous sediment source. Morrow and lower Atoka strata document the initiation of Arkoma basin subsidence during early Pennsylvanian time and reflect an eastern source of terrigenous sediment to the Arkoma shelf.
Download or read book Structure and Stratigraphy of a Complex Anticlinal Feature Backbone Anticline Arkoma Basin Arkansas written by Shailyn Marie Abbott and published by . This book was released on 2014 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Arkoma Basin of Arkansas and Oklahoma formed in the Ouachita foreland during the late Mississippian and Pennsylvanian periods (about 290- to 330 million years ago). The basin developed in response to convergent tectonic boundaries that closed obliquely from west to east associated with Ouachita orogenic event. The Backbone anticline in the northern Arkoma Basin is a prominent product of this convergence, and represents the first major component of this study. The structure is asymmetric with beds on the southern limb dipping steeply to the south. It is also expressed topographically as a prominent ridge that trends eastward from the Oklahoma-Arkansas border approximately 30 miles. The ridge is bounded on the northern side by a steeply dipping normal fault with most of the sedimentary exposure occupying a position on the southern hanging wall of the structure. Strata involved in the structure are sandstone and shale units from the middle and upper part of the Atoka Formation. A recent road cut in southern Sebastian County, Arkansas exposes a complete and continuous section of more than 600 feet in thickness through an upper Atoka sandstone unit along the Backbone anticline. A subsurface stratigraphic study of the middle of the Backbone anticline was also conducted. Several normal and some reverse faults were noted from cross-sections of the subsurface using IHS PETRARTM software program. The upper 5400 feet of the Atoka Formation includes intervals from the middle and upper part of the formation. This interval extending from the Casey Sand to the Upper Alma Formation was examined by means of three cross-sections prepared from wire line logs to determine the role of faulting in the sedimentary section
Download or read book Stratigraphy and Depositional Characterization of the Moorefield Shale Middle Late Mississippian in Its Type Area Northeastern Arkansas Eastern Arkoma Basin written by Griffin William Warner and published by . This book was released on 2019 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Moorefield Shale represents the Meramecian Series in the Eastern Arkoma Basin in northern Arkansas. Lying on the margin of the Mississippi Embayment and Reelfoot Rift, sequence stratigraphic interpretations have labelled the Moorefield Shale a lowstand wedge succeeding the Early Mississippian (Osagean) Boone Limestone conformably and overlain conformably by the Hindsville Limestone/Batesville Sandstone. The unit contains a basal brown-black limestone and succeeding brown-black phosphatic shale. The Moorefield Shale was deposited along the broad, stable cratonic platform on the southern flank of Laurasia, before it's collision with Gondwanaland to form the supercontinent Pangea at the end of the Paleozoic. During this time, the midcontinent region was covered by shallow seas and carbonates covered most of the region. A shallowly dipping carbonate ramp developed in the region providing a foundation for clastic sediment deposition. The Boone Limestone underlies the Moorefield Shale throughout the eastern Arkoma Region however, the Boone carbonate sediment was transported from its origin on the Burlington Shelf in the northwestern part of Arkansas, and thicknesses of the Boone Limestone significantly decrease to the south and east. Thinning of the Boone Limestone has allowed greater accommodation space for succeeding formations in the eastern Arkoma Basin, and has allowed the Moorefield Shale to be considerably thicker in the east. Thicknesses of the Moorefield Shale measure to approximately 100 feet in outcrop, and 350 feet or greater in the subsurface. Due to the lack of research, the Moorefield Shale offers a unique perspective into the stratigraphy and deposition of Mississippian units of the eastern Arkoma Basin.
Download or read book Structural Cross Sections and Subsurface Maps of the Atoka Formation in the Northern Arkoma Basin Western and Northwestern Arkansas written by David Lewis Nance and published by . This book was released on 2018 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Arkoma Basin is one of several peripheral foreland basins situated on the front of the Ouachita orogenic fold and thrust belt. The transition from the foredeep to the Ozark Plateaus is a short one in terms of latitude. The Atoka Formation in Arkansas comprises the bulk of the sediments in the Arkoma Basin. Three divisions of the Atoka Formation have been informally assigned as the Upper, Middle, and Lower based on differences in sedimentary response to tectonic processes that occurred during the formation and subsidence of the Arkoma Basin. In the Arkansas portion of the Arkoma Basin, the lower Atoka marks the onset of tectonic subsidence in between the Mulberry and the Cass Fault systems and displays a maximum of almost 1,000 feet of thickening in the study area. The middle Atoka in the same area gains a maximum of 4,000 feet of sediment. The upper Atoka achieves a maximum thickness of 1,800 feet. Entrapment of hydrocarbons within the Atoka Formation in the Arkoma Basin has led many oil and gas companies to penetrate and log the formation with electric, gamma ray and other mechanical logs while exploring for natural gas. This study uses these raster logs to provide a variety of maps and cross sections that illustrate the coastal systems of the lower and upper Atoka Formation and aid in the interpretation of the sedimentary response of the three Atoka divisions with respect to structural timing and sedimentology. With the subsurface maps and cross sections, a more synthesized version of the Atoka Formation in the northern Arkoma Basin of western version is produced.
Download or read book Structure and Stratigraphy of the Arkoma Basin of Western Arkansas written by James Carson Sloan and published by . This book was released on 1999 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Shelf to Basin Transition and Tectonostratigraphy of the Atoka Formation lower Pennsylvanian in the Arkoma Basin Northwest Arkansas written by Travis Gibson White and published by . This book was released on 2019 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: The east-to-west oriented Arkoma Basin is a peripheral foreland basin or depositional trough that developed during the Carboniferous Period. This formation covers an aerial extent of approximately 33,800 square miles and spans from west-central Arkansas into southeastern Oklahoma (McGilvery, Manger, and Zachry, 2016; Perry, 1995). The Atoka Formation, deposited during the early Pennsylvanian, is the largest Paleozoic formation by aerial extent in the state of Arkansas and is located within and comprises the bulk of Arkoma Basin sediments (McFarland, 2004; Nance, 2018). This formation has been informally divided into three divisions, the lower, middle, and upper, based on their stratigraphic response to differing tectonic processes. A tectonostratigraphic interpretation was made for each division of the Atoka Formation using high resolution cross sections; correlated using well log, seismic, and surface data. Five condensed regional transects were constructed that aided in the development of a cross section "grid" meant to represent the deep marine to shallow marine depositional hinge lines. Each of the three Atoka divisions have a different dominant depositional force. The Lower Atoka deposition was dominated by eustasy, and with sediment supply from the start of Arkoma Basin tectonics, the middle division was dominated by tectonic subsidence and the upper was dominated by sediment supply. The transition between the Atoka divisions and the magnitude of migration between each deep marine hinge line indicates the progradation of the Upper Atoka depositional cycles occurred more rapidly than the retrogradation of the Middle Atoka. The maximum flooding of the formation occurred within the Middle Atoka's uppermost informal member, the Morris Member. The Lower Atoka was deposited on an extensive tectonically stable structural platform, which is supported by no lithostratigraphic transition to deep marine deposits within this project's study area. The deep marine deposition is characterized by shales encapsulating tumultuously distributed and isolated sandstone complexes. These sandstone complexes are not correlated to the shallow marine sandstones by anything but a condensed geologic timeline.
Download or read book Guidebook Arkoma Basin and North Central Ouachita Mountains written by Tulsa Geological Society and published by . This book was released on 1961 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Middle Atoka Depositional Systems of the Southwestern Arkoma Basin Arkansas written by Pamela K. Williams and published by . This book was released on 1985 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Stratigraphy Facies Relationships and Depositional Environments of Morrowan and Atokan Strata Eastern Arkoma Basin Arkansas written by Stephen Norbert Williams and published by . This book was released on 1986 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Geologic Transect of the Arkoma Basin in Northwest Arkansas written by Eric Wesley Jameson and published by . This book was released on 1998 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Lithostratigraphy and Depositional Systems of the Bloyd and Hale Formations Pennsylvanian in the Western Arkoma Basin of Arkansas written by Ronald R. Foshee and published by . This book was released on 1980 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book First Report of a Geological Reconnoissance of the Northern Counties of Arkansas Made During the Years 1857 and 1858 written by David Dale Owen and published by . This book was released on 1858 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Arkoma Basin Exploration written by Rinehart Oil News Company and published by . This book was released on 1963 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sequence Stratigraphy and Depositional Systems of the Mansfield Sand Upper Atoka Formation Arkoma Basin Arkansas written by Scott Aubrey Cherry and published by . This book was released on 2012 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Mansfield sand is an informally named member of the Pennsylvanian Atoka Formation in Arkansas. Once a productive gas reservoir, the Mansfield is situated in a double plunging anticline in the southern portion of the Arkoma Basin. The formation is internally composed of sandstone units ranging in thickness from tens of feet to over a hundred feet interbedded with shale units ranging in thickness from several tens of feet to hundreds of feet. Previous studies have focused on the stratigraphy of the lower and middle Atoka. A detailed subsurface study of the stratigraphic framework of the Mansfield sand was conducted using conventional lithostratigraphy and sequence stratigraphy. Four progradational parasequences have been identified within a highstand systems tract. Deposition of the Mansfield occurred in a deltaic environment on a sandy, fluvial or wave dominated shoreline.
Download or read book Depositional Systems of the Lower Atoka Formation in the Arkoma Basin Arkansas written by Jay S. Johnston and published by . This book was released on 1982 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:
