Results 181 to 190 of about 8,608 (219)
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The rate of dissolution of calcium carbonate from the surface of deep-ocean turbidite sediments
Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences, 1990Abstract It is known that past periods of high atmospheric carbon dioxide concentration are associated with poor carbonate preservation in the deep-ocean sedimentary record. Bottom water can become more aggressive towards carbonate sediments during such periods.
T. R. S. Wilson, Helen E. Wallace
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Attribute expression of channel forms in a hybrid carbonate turbidite formation
Interpretation, 2016Much of the world’s conventional oil and gas production comes from turbidite systems. Interpreting them in three dimensions using commercially available software generally requires seismic attributes. Hybrid carbonate turbidite systems are an interesting phenomenon that is not fully understood.
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SEPM Journal of Sedimentary Research, 1994
ABSTRACT Upper Pennsylvanian to Lower Permian mixed siliciclastic-carbonate sandy turbidites from the Oquirrh-Wood River basin in southern Idaho contain 20 to 60 modal percent microspar and pseudospar. Previous interpretations suggested that neomorphism of detrital lime mud produced the observed carbonate textures.
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ABSTRACT Upper Pennsylvanian to Lower Permian mixed siliciclastic-carbonate sandy turbidites from the Oquirrh-Wood River basin in southern Idaho contain 20 to 60 modal percent microspar and pseudospar. Previous interpretations suggested that neomorphism of detrital lime mud produced the observed carbonate textures.
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The Carbonate Minerals of Deep-Sea Bioclastic Turbidites, Southern Blake Basin
SEPM Journal of Sedimentary Research, 1971ABSTRACT Three cores from the southern Blake Basin and adjoining Blake Ridge penetrated several distinct carbonate units and intervening pelagic terrigenous clay units. Structural and textural changes within the carbonate units strongly suggest that these units were deposited by turbidity currents, which presumably originated in the Bahama Island area.
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Journal of Sedimentary Research, 2010
Abstract Sediment grains in carbonate turbidity currents vary greatly in size, shape, surface texture, and density depending on the evolution of the source carbonate platform in time and space. Facies character and distribution may vary from traditional siliciclastic turbidite models not only because of the difference in composition but also because ...
Hodson, James M., Alexander, Jan
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Abstract Sediment grains in carbonate turbidity currents vary greatly in size, shape, surface texture, and density depending on the evolution of the source carbonate platform in time and space. Facies character and distribution may vary from traditional siliciclastic turbidite models not only because of the difference in composition but also because ...
Hodson, James M., Alexander, Jan
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Geochimica et Cosmochimica Acta, 1989
Carbon isotope data are given for organic matter, calcite, and pore water in carbonate turbidites from the Madeira Abyssal Plain. The carbon isotope composition of dissolved inorganic carbon (DIC) in pore water is between 0.3 and 1%. heavier than modelled values. The δ13C of DIC added to the system is −5.5 to −6.9%., whereas the predicted value is −9.0%
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Carbon isotope data are given for organic matter, calcite, and pore water in carbonate turbidites from the Madeira Abyssal Plain. The carbon isotope composition of dissolved inorganic carbon (DIC) in pore water is between 0.3 and 1%. heavier than modelled values. The δ13C of DIC added to the system is −5.5 to −6.9%., whereas the predicted value is −9.0%
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Detrital, biogenic, and diagenetic carbonates in turbidites of the Bengal Fan
2018Since the Oligocene, the Himalayan erosion drives one of the most important detrital flux to the oceans. More than 500 Mt of sediments are transferred annually from the Bangladesh delta to the shelf and submarine canyon, the Swatch of No Ground. From the canyon, turbidity current drive sediments along channel levees and disperse sediment over 3000 km ...
France-Lanord, Christian +2 more
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SEPM Journal of Sedimentary Research, 1979
ABSTRACT There is a marked compositional contrast between hemipelagite and turbidite material of some Upper Cretaceous turbidite units of the Flysch Zone of the East Alps and of Helminthoid Flysch (Western Alps and Apennines). The first is a carbonate-poor or carbonate-free deposit (0%-5% CaCO3), whereas the directly underlying turbidite sediment ...
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ABSTRACT There is a marked compositional contrast between hemipelagite and turbidite material of some Upper Cretaceous turbidite units of the Flysch Zone of the East Alps and of Helminthoid Flysch (Western Alps and Apennines). The first is a carbonate-poor or carbonate-free deposit (0%-5% CaCO3), whereas the directly underlying turbidite sediment ...
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Sedimentology, 2006
AbstractResults of a detailed petrographic and stable isotope study illustrate that sedimentological differences and eogenetic dissolution/precipitation processes controlled porosity distribution within carbonate turbidites of the Ionian basin (central Albania).
B. DEWEVER +3 more
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AbstractResults of a detailed petrographic and stable isotope study illustrate that sedimentological differences and eogenetic dissolution/precipitation processes controlled porosity distribution within carbonate turbidites of the Ionian basin (central Albania).
B. DEWEVER +3 more
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Jurassic Proximal and Distal Carbonate Turbidites of Central High Atlas Mountains, Morocco: ABSTRACT
AAPG Bulletin, 1973The Lower Jurassic sediments of the High Atlas Mountains of Morocco were deposited in a northeast-southwest-oriented trough approximately 100 km wide and 800 km long. The trough margins are characterized by carbonate and marl shelf deposits, whereas the central, axial part is characterized by offshore, deeper water carbonates and marls.
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