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Showing 1 to 20 of 93 for “"Carboniferous"”.
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Stratigraphy of the mid-Carboniferous boundary
… the stratigraphy of the newly defined mid-Carboniferous boundary. The selection of the mid-Carboniferous stratotype section should reconcile problems between the different mid-Carboniferous biostratigraphies developed throughout the world and provide a standard against which other …
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Thermal and Diagenetic Evolution of Carboniferous Sandstones, Central Appalachian Basin
The thermal and diagenetic evolution of Carboniferous sandstones in the central Appalachian basin has been resolved using various techniques. Paleothermometers including vitrinite reflectance and fluid inclusions indicate that burial of Lower and Upper Pennsylvanian strata of the Appalachian …
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Structural geology of carboniferous rocks near Marble Falls, Burnet County, Texas
Carboniferous rocks assigned to the Houy, Chappel, Barnett, Marble Falls, and Smithwick formations crop out near Marble Falls, Texas. Numerous northeast-trending normal faults that cut the Paleozoic and Precambrian rocks are covered by Cretaceous deposits. Faulting in the area began about the time …
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Sedimentology, diagenesis and geochemistry of the Great Limestone, Carboniferous, northern England.
Yoredale type cyclothems of the Mid-Carboniferous of north east England were deposited as a result of glacio-eustatic fluctuations arising from waxing and waning of the Gondwana ice sheets present in the southern hemisphere. Rhythmic alternations of areas of maximum cyclothem thickness have been …
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Anatomy of a Carboniferous transgression: upper Tullig Cyclothem, County Clare, Ireland
… consequences of relative sea-level rise in a Carboniferous transgressive sequence in County Clare, western Ireland. The transgression in focus is at the top of the Tullig Cyclothem, and is exposed in several sections over a distance of 46 km. The aims of this thesis are to describe and …
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Tectonics and sedimentation in the Devonian and carboniferous rocks of SW Devon, England.
… zone, comprising Upper Devonian and lower Carboniferous strata, extends into central Devon and east Cornw~ll and the geometry and facing of the early folds in these rocks indicate a transport direction to the south or south east. Dl folds generally verge north but are downward facing …
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Stratigraphic Variations in the Carboniferous Section Across the Arkansas-Oklahoma State Line Arch
<p>The State Line Arch is represented by a structural high that trends through the study area in a loose alignment with the Arkansas-Oklahoma state line. Evidence of the arch extending further to the north includes a structural high and stratigraphic variation at an outcrop on Highway 59 near …
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Variation Studies of Non-Marine Pelecypods From the Upper Carboniferous of Eastern North America
Made available in DSpace on 2014-12-04T19:13:35Z (GMT). No. of bitstreams: 1 0023351.pdf: 9640916 bytes, checksum: ed43aab701e2696783ba5b3a236dfded (MD5) Previous issue date: 1957
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Magnetic Characteristics of Carboniferous Continental Depositional Systems: Implications for the Recognition of Depositional Hiatuses
Quaternary magnetic studies have provided the conceptual framework to bridge magnetic studies into ancient systems. In cases where environmental materials have been subjected to diagenetic alteration two questions come to mind: 1) What part of the magnetic signal is preserved in the rocks; and 2) …
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Diagenesis of a carboniferous isolated carbonate platform from the subsurface of the Precaspian Basin, Kazakhstan
Includes bibliographical references (pages 67-72).
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Petrology, geochemistry, diagenesis and depositional environment of the Upper Devonian - Lower Carboniferous Exshaw Formation, northwestern Alberta.
The Upper Devonian (Famennian)-Lower Carboniferous (Tournaisian) Exshaw Formation is a thin, laterally extensive organic-rich petroleum source rock. It is one of Canada's most important petroleum source rocks and is a major contributor to the Lower Cretaceous Mannville heavy oil accumulations in …
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The Carboniferous Courceyan-Chadian) Sedimentary Facies Mosaic of the Keel -Ardagh Area of County Longford, Eire
… environments of the Silurian, Devonian and Lower Carboniferous lithologies in the Keel area are deduced and described. This was accomplished by the analysis of over 10.000M. of diamond drilled core from the area. <br/><br/>The oldest rocks are Silurian shales with turbidites. Deposition was in …
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Tertiary and carboniferous magmatism around Lundy Island and the outer Bristol Channel - a geophysical and geochemical perspective
The British Tertiary Volcanic Province comprises central volcanic complexes with positive gravity and magnetic anomalies, some centres associated with both large volumes of continental flood basalts and regional dyke swarms. The Lundy Island is the southern most expression of Tertiary volcanism and …
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Comparative stratigraphy of the lower part of the Carboniferous-Permian Bird Spring Formation, Spring Mountains, Clark County, Nevada
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric and Planetary Sciences, 1984.
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Seismic studies on the Derbyshire dome
… been a stable uplifted area since at least Lower Carboniferous times. This project is principally concerned with four 30km seismic refraction lines which crossed the limestone outcrop of Derbyshire and N. Staffordshire in order to investigate the Dome's upper crustal structure, using quarry blasts …
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