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Characterization of Overgrowth Structures Formed Around Individual Clay Particles During Early Diagenesis
Beidellite Diagenesis Illite Montmorillonite Overgrowths Scanning electron microscopy
2012/1/10
The coarse (0.4? 祄) clay fraction of an Albian black shale collected in the Atlantic Ocean (Deep Sea Drilling Project leg 11) consists chiefly (90?5%) of smectite and 5?0% illite. Both minerals are lo...
Tectonic Implications of Illite/Smectite Diagenesis, Barbados Accretionary Prism
Barbados Diagenesis Faulting Illite/smectite Tectonics
2012/1/12
The depth distribution of illite/smectite (I/S) compositions was investigated for a well drilled to a depth of 3462 m on Barbados Island, the only subaerial exposure of the Barbados accretionary compl...
Absence of Clay Diagenesis in Cretaceous-Tertiary Marine Shales, Campos Basin, Brazil
Diagenesis Illite Interstratified Nontronite Shale Smectite X-ray powder diffraction
2012/1/12
In Upper Cretaceous-Tertiary marine shales (Campos Formation) from the Campos basin, Brazil, mixed-layer illite/smectite (I/S) has remained randomly interstratified to depths of 3500 m and to temperat...
Comparisons between the Diagenesis of Dioctahedral and Trioctahedral Smectite, Brazilian Offshore Basins
Brazil Chlorite Corrensite Diagenesis Illite Interstratification Saponite Smectite Trioctahedral Vitrinite reflectance
2012/1/12
Burial diagenetic reactions of di- and trioctahedral clay minerals were compared in Brazilian offshore, basinal sediment sequences of Cretaceous age. Originally dioctahedral smectite-rich shales of th...
Oxygen Isotopes and the Extent of Diagenesis of Clay Minerals during Sedimentation and Burial in the Sea
Diagenesis Gulf of Mexico Isotope Mississippi River Oxygen Sedimentation Smectite
2012/1/12
Oxygen isotope ratios of <0.1-µm smectite in bottom sediments of the Mississippi River and the Gulf of Mexico near the mouth of the river have been determined to investigate diagenesis of land-d...
Relationship Between Illite/Smectite Diagenesis and Hydrocarbon Generation in Lower Cretaceous Mowry and Skull Creek Shales of the Northern Rocky Mountain Area
Diagenesis Hydrocarbon Illite/smectite Interstratification Maturation Pyrolysis Shale
2012/1/12
The percentage of expandable layers in illite/smectite (I/S) mixed-layer clay decreases with increasing temperature and depth in a section through marine Cretaceous shales in the Champlin 1 Hartley Fe...
Zeolite Diagenesis Below Pahute Mesa, Nevada Test Site
Analcime Clinoptilolite Closed hydrologic system Diagenesis K-feldspar Mordenite Zeolite
2012/2/8
The Tertiary silicic volcanic rocks in the Silent Canyon Caldera beneath Pahute Mesa, of the Department of Energy's Nevada Test Site have been divided into three vertical mineralogical zones that vary...
Black Shale—Its Deposition and Diagenesis
Black shale Deposition Diagenesis Organic matter Syngenetic ores
2012/2/10
Black shale is a dark-colored mudrock containing organic matter that may have generated hydrocarbons in the subsurface or that may yield hydrocarbons by pyrolysis. Many black shale units are enriched ...
Diagenesis of Clay Minerals from Lower Cretaceous Shales of North Eastern British Columbia
Diagenesis Clay Minerals Lower Cretaceous Shales North Eastern British Columbia
2012/2/15
Clay minerals from shale outcrops of the Lower Cretaceous Buckinghorse Formation (4250 ft thick) were investigated in order to assess their degree of diagenesis and their oil-generating potential. Cry...
Burial Diagenesis in Gulf Coast Pelitic Sediments
Burial Diagenesis Gulf Coast Pelitic Sediments
2012/2/20
Subsurface samples of shales ranging in age from Pleistocene to Eocene obtained from five Gulf Coast oil wells were examined mineralogically and chemically to determine the nature and extent of burial...