Clay mineral analyses were carried out on late Maastrichtian–early Palaeocene (Cretaceous–Tertiary) sedimentary rocks in the Ariyalur area of the Cauvery Basin (southeastern India). These investigations were aimed at determining the sedimentary provenance and palaeoclimate of the area in the latest Cretaceous and earliest Tertiary.
Sedimentation was impeded since then on the intermediate and deep sites of Demerara Rise, possibly due to the action of deep submarine currents.", keywords = "Black shales, Cretaceous, Demerara, Tertiary, Tropical Atlantic",
Compositional and petrographic data from bentonites and shales indicate that clay minerals in Cretaceous Colorado Group marine shales from the Western Canada Sedimentary Basin are largely derived from volcanic ash delivered to the basin as fine-grained eolian sediment.
Of special interest to scientists is a thin layer of clay that neatly separates layers of rock laid down in the Cretaceous Period (when dinosaurs lived) from layers deposited …
Site 576, located in the Northwest Pacific, drilled nearly 55 meters of pelagic, red clay sediments before bottoming in Cretaceous calcareous ooze. Geotechnical testing of the sedimentary sections showed both sites to be primarily responding to the effects of mechanical compaction, or consolidation.
The clay sedimentation patterns in the North and South Iberian sections across the Cretaceous-Tertiary passage are controlled overwhelmingly by regional or local geodynamic and diagenetic phenomena. Thus any global, namely extraterrestrial, influence cannot be identified.
The Late Cretaceous sedimentary sequence in the Upper Benue Trough consists of seven formations. Outcrop samples from the type localities of these units were analysed by X-ray diffraction for their day mineral content. The composition and distribution of the clay minerals are influenced by tectonics ...
the most abundant clay mineral in the Cretaceous deep-sea sediments. Smectite-rich deposits correlate with periods of relatively low sedimentation rates.
in the Cretaceous Deposits of the Russkoe–Chaselka MegaArch (West Siberian Oil and Gas Basin) V. A. Zhemchugovaa, * and M. O. Berbenevb a Department of Geology, Moscow State University, ... inance of clay sedimentation in the alluvial plain (Posamentier and Allen, 2014). In the PK 19
The Cretaceous rocks in western Illinois (Frye et al., 1964) (fig. K-4) also are clastic rocks, largely sand, and as much as 100 feet thick. They are the easternmost outliers of Cretaceous sediments that formerly covered the region east of the Rocky Mountains and north of the Ozarks.
Comparative mineralogical and geochemical clay sedimentation in the Betic Cordilleras and Basque–Cantabrian Basin areas at the Cretaceous–Tertiary boundary. Sediment. Geol .
Mid-Cretaceous tectonic evolution of the Tongareva triple junction ... is coincident with the end of volcaniclastic sedimentation and the onset of carbonate sedimentation on the Manihiki Plateau. Sliter (1992) identiﬁed foraminiferal zone KS7 (the Leupoldina
Jurassic and Cretaceous Transgressive-Regressive (T-R) Cycles, Northern Gulf of Mexico, USA Ernest A. Mancini and T. Markham Puckett Department of Geological Sciences and Center for Sedimentary Basin Studies, P.O. Box 870338,
Sedimentation history of the South Pacific pelagic clay province over the last 85 million years Inferred from the geochemistry of Deep Sea Drilling Project Hole 596. ... show great variability in the composition of pelagic clays accumulated in the South Pacific since the late Cretaceous. Elemental associations indicate that most of this ...
Distribution and origin of clay minerals in the Lower Cretaceous of the Alava Block (Basque-Cantabrian Basin, Spain) ... to different sedimentation and subsidence rates. GEOLOGICAL SETTING The Alava Block is located in the Basque-Cantabrian Basin (Fig.1a), between the Pyrenean
Clays and Clay Minerals, Vol. 34, No. 4, 390-402, 1986. ... maturation of the organic matter or the sediment in which it was deposited were sought. Because the mat- uration of organic matter involves the loss of CO2 and ... Cretaceous source rocks in northern Rocky Mountain basins. Because the Rock-Eval and TOC data have
The distinctive Mg-smectite that is the predominant clay mineral in the Cretaceous/ Tertiary (K/T) boundary marl at Stevns Klint, Denmark (that is, the Fish Clay), which has been previously believed to have formed from impact-derived glass, is also present in the upper of two marls of probable early ...
both the Cretaceous and Paleogene sediments is clay or claystone, often punctuated by thin carbonate or silici-clastic turbidites, although thicker sand bodies and ... Upper Jurassic and Lower Cretaceous sedimentation in a series of marginal basins, which include the Mandawa and Ruvuma Basins of the study area (see Fig.1).
Cretaceous and Cenozoic sedimentation in the Mississippi embayment. Physiographically the modern Mississippi em- ... Late Cretaceous and Cenozoic Geology of the New Madrid Seismic Zone 349 Figure 4. Data (a) and structure contour map (b) of the top of the Upper Cretaceous ... mation is a calcareous marine clay that thins northward. Be-neath ...
The clay mineralogy of Lower Cretaceous deep-sea fan sediment in the western North Atlantic is dominated by smectite in most intervals, and by illite in samples from intervals of high sand input. Different intervals of higIt'sand
Pedersen, PK & Steel, R 1999, ' Sequence stratigraphy and alluvial architecture of the Upper Cretaceous Ericson Sandstone, Glades-Clay Basin area, Wyoming/Utah border ' Mountain Geologist, vol. 36, no. 2, pp. 71-84.
The clay mineralogy of Lower Cretaceous deep-sea fan sediment in the western North Atlantic is dominated by smectite in most intervals, and by illite in samples from intervals of high sand input. Different intervals of high sand
sedimentation in the Benue Trough ( Ladipo, 1988; Akande and Erdtmann, 1998). Okigwe and its environs, which is the study area is composed of upper Cretaceous succession of Nkporo Shale, Mamu Formation, Ajali Formation and Nsukka Formation.
sediment, mineral or organic particles that are deposited by the action of wind, water, or glacial ice. These sediments can eventually form sedimentary rocks (see rock rock, aggregation of solid matter composed of one or more of the minerals forming the earth's crust.
Geology Test Practice #2. STUDY. PLAY. 1. Viscosity of the magma is controlled by? ... -Increased sediment load causes the river to steepen its gradient to transport more sediment. ... What element was found to be enriched in a thin clay layer marking the Cretaceous-Tertiary boundary at several sites around the world? -calcium-uranium-iridium ...
The Cretaceous–Paleogene (K–Pg) extinction event, also known as the Cretaceous–Tertiary (K–T) extinction, was a sudden mass extinction of some three-quarters of the plant and animal species on Earth, approximately 66 million years ago.
The Cretaceous–Paleogene (K–Pg) boundary, formerly known as the Cretaceous–Tertiary (K-T) boundary, is a geological signature, usually a thin band of rock. K, the first letter of the German word Kreide (chalk), is the traditional abbreviation for the Cretaceous Period and Pg is the abbreviation for the Paleogene Period.
Sedimentation in the Lower Benue Trough commenced with the marine Albian Asu River Group, the Asu River ... Paleoclimate Reconstruction during Mamu Formations (Cretaceous) Based on Clay Mineral 44 | Page Paleoclimatic Significance of Clay Mineral Assemblages From Mamu Formation ...