Results 311 to 320 of about 1,242,825 (373)

Prokaryotic Communities Differ Along a Geothermal Soil Photic Gradient

Microbial Ecology, 2012
Geothermal influenced soils exert unique physical and chemical limitations on resident microbial communities but have received little attention in microbial ecology research. These environments offer a model system in which to investigate microbial community heterogeneity and a range of soil ecological concepts.
James F, Meadow, Catherine A, Zabinski
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Normal Geothermal Gradient in United States

AAPG Bulletin, 1935
The objects in preparing this paper have been, first, to prepare a brief summary of the gradients deduced from recent geothermal surveys in the United States; and second, to discuss the data thus summarized from the standpoint of a normal geothermal gradient.
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Geothermal Gradients in Mississippi Embayment: ABSTRACT

AAPG Bulletin, 1983
A statistical analysis of bottom-hole temperatures from oil and gas wells in the northern Mississippi embayment suggests that the geothermal gradient below a depth of 1 km is low (22.2°C/km) and for the New Madrid seismic zone, it is even lower (15.7°C/km).
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Estimation of Curie point depth, geothermal gradient and heat flow within the lower Benue trough, Nigeria using high resolution aeromagnetic data

Modeling Earth Systems and Environment, 2020
J. Yakubu, F. Okeke, D. Obiora
semanticscholar   +1 more source

GEOTHERMAL GRADIENTS AND GEOTHERMAL OIL GENERATION IN SOUTHERN IRAQ: A PRELIMINARY INVESTIGATION

Journal of Petroleum Geology, 1984
Local geothermal gradients in South Iraq were used in calculating the time‐temperature indices of source rock maturation, as modified by Waples (1980). Accordingly, Cretaceous, Jurassic, Triassic and probably Paleozoic rocks are calculated to be with in the thermal petroleum generative zone in several parts of southern Iraq.
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Thermal response tests on deep borehole heat exchangers with geothermal gradient

, 2020
R. Beier
semanticscholar   +1 more source

Geologic Significance of a Geothermal Gradient Curve

AAPG Bulletin, 1937
The Getty-Dooley well No. 7 was drilled in Eddy County, New Mexico, to a depth of 6,683 feet and passed through a thick section of Permian rocks, including the Rustler, Salado, Carlsbad, Capitan, Delaware Mountain, and into the top of the Bone Spring limestone. This stratigraphic section is divisible into three lithologic units: the Rustler-Salado, the
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Geothermal Gradients, Hydrodynamics, and Hydrocarbon Occurrences, Alberta, Canada

AAPG Bulletin, 1984
Using coal rank data and the demonstrated genetic link between the present hydrodynamic regime and geothermal gradient pattern, it is possible to reconstruct the geothermal history of Alberta over the past 60 m.y. Palinspastic adjustment for tectonic compression caused by the major Laramide thrusting shows that the predeformation isoreflectance lines ...
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Approximate Geothermal Gradients in Niger Delta Sedimentary Basin

AAPG Bulletin, 1976
More than 1,000 well logs from the Niger delta sedimentary basin were examined for temperature-data quality. Most measurements were made within 4 to 8 hours of cessation of mud circulation. Such nonequilibrium temperatures were corrected to approximately true formation values by applying a numerical solution to a modified Lachenbruch-Brewer's equation.
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Regional variations in geothermal gradient and heat flow across the African plate

, 2020
D. Macgregor
semanticscholar   +1 more source