Results 101 to 110 of about 139,956 (281)
Salinity Constraints on Subsurface Archaeal Diversity and Methanogenesis in Sedimentary Rock Rich in Organic Matter [PDF]
, 2007 Patricia J. Waldron +3 more
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Grain Segregation Mechanism in Aeolian Sand Ripples [PDF]
Eur. Phys. J.-E, 1 January 2000, 1998 Many sedimentary rocks are formed by migration of sand ripples. Thin layers of coarse and fine sand are present in these rocks, and understanding how layers in sandstone are created has been a longstanding question. Here, we propose a mechanism for the origin of the most common layered sedimentary structures such as inverse graded climbing ripple ...
arxiv
, 2008 Biblioteca de Educación del Ministerio de Educación, Cultura y Deporte; Calle San Agustín, 5 - 3 planta; 28014 Madrid; Tel.
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Hydrocarbon potential in the key basins in the East Coast of Africa
Petroleum Exploration and Development, 2013 This paper analyzes the evolution and sedimentary filling characteristics of regional structures in the sedimentary basins in the east coast of Africa and discusses the different geological conditions of hydrocarbon accumulations (e.g.
Zongying ZHOU +3 more
doaj
Macroscopic Dielectric Constant for Microstructures of Sedimentary Rocks [PDF]
Granular Matter, vol. 2, page 137, (2000), 1999 An approximate method to calculate dielectric response and relaxation functions for water saturated sedimentary rocks is tested for realistic threedimensional pore space images. The test is performed by comparing the prediction from the approximate method against the exact solution.
arxiv
Petroleum Exploration and DevelopmentThe saline lacustrine hybrid sedimentary rocks are complex in lithology and unknown for their sedimentary mechanisms. The hybrid sedimentary rocks samples from the Neogene upper Ganchaigou Formation to lower Youshashan Formation (N1–N21) in the Fengxi ...
Guangyong SONG +9 more
doaj
A study of radioactive elements of various rocks in Pattani Province with gamma ray spectrometer [PDF]
Songklanakarin Journal of Science and Technology (SJST), 2002 The radioactivity of the three elements, potassium, uranium and thorium, in rocks of various types in Pattani Province was investigated by using a gamma ray spectrometer.
Kaewtubtim, P. +2 more
doaj
Geothermal Energy in Sedimentary Basins: Assessing Techno-economic Viability for Sustainable Development [PDF]
Geothermal Resources Council Transactions, 2023Drilling deep geothermal wells has proven to be a challenging endeavor, primarily due to issues such as loss circulation events, material limitations under high temperatures, and the production of corrosive fluids. Furthermore, the substantial upfront costs, coupled with geological and technical obstacles associated with drilling super-hot EGS wells in
arxiv
Fossilization in Geopark Araripe studied through X-ray diffraction, scanning microscopy and thermogravimetric analysis [PDF]
arXiv, 2008 The Geopark Araripe, located in Northeastern Brazil, is the first UNESCO Natural Park in the South hemisphere and a world-famous fossil deposit of the Early Cretaceous period (approximately 120 million years). Fossilized fish fauna in Geopark Araripe is found inside of sedimentary rocks in three-dimensional forms. In the present study sedimentary rocks
arxiv
Sedimentary rocks of southern Patagonia [PDF]
American Journal of Science, 1900 n ...
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