ITCZ controls on Late Cretaceous black shale sedimentation in the tropical Atlantic Ocean P. Hofmann1 and T. Wagner2 Received 12 April 2011; revised 11 October 2011; accepted 12 October 2011; published 23 December 2011. [1] This study presents …
ITCZ controls on Late Cretaceous black shale sedimentation in the tropical Atlantic Ocean P. Hofmann1 and T. Wagner2 Received 12 April 2011; revised 11 October 2011; accepted 12 October 2011; published 23 December 2011.
Comparative mineralogical and geochemical clay sedimentation in the Betic Cordilleras and Basque-Cantabrian Basin areas at the Cretaceous-Tertiary boundary M. Ortega Huertas a, F. Martinez Ruiz a,', I. Palomo a, H. Charnley b
Thermal models and clay diagenesis in the Tertiary-Cretaceous sediments of the Alava block (Basque-Cantabrian basin, Spain) J. AROSTEGUI 1,*, F. J. SANGU ¨ ESA 1, F. NIETO 2 AND J. A. URIARTE 3 1 Departamento de Mineralog ´a y Petrolog a, Facultad de Ciencia y Tecnolog a, Universidad del Pa sVasco/EHU, Apdo.644,48080,Spain, 2 DepartamentodeMineralog ´ayPetrolog …
Climate, tectonics and meteoritic impact expressed by clay mineral sedimentation across the Cretaceous-Tertiary boundary at Blake Nose, Northwestern Atlantic F.MARTI´NEZ-RUIZ1, M. ORTEGA-HUERTAS2,*ANDI.PALOMO2 1InstitutoAndaluz deCiencias laTierra,Facultad Ciencias,Avda. Fuentenueva,s/n. 18002Granada,Spain,and
Clay mineral fractionation from land to offshore environments is enhanced especially when shallow rimmed carbonate platforms expand and retain kaolinite and/or chlorite in shallow environments (Deconinck et al., 1985; Godet et al., 2008). Sea‐level changes may have played a significant role in Pliensbachian clay mineral sedimentation.
7/9/2018· The clay mineralogy of Upper Permian–Lower Cretaceous mudstones from East Greenland has been investigated by X-ray diffraction (XRD), atomic force microscopy (AFM) and thermal analysis in order to evaluate long-term trends in provenance and palaeoclimate and to …
Among calcareous nannofossils, important primary producers in Jurassic and Cretaceous oceans, nannoconids were carbonate rock-forming organisms. During the …
Significant terrigenous inputs are evidenced by increasing proportions of detrital clay minerals such as illite, kaolinite and chlorite at various levels in the mid- to upper Campanian, while smectitic minerals predominate and represented the background of the Late Cretaceous clay sedimentation.
The Jurassic–Cretaceous episodes of convergence of the Nevadan and Sevier Orogenies have led to the establishment of the Western Interior Basin (WIB), an elongated interior foreland marine basin (Kauffman, 1977, Hay et al., 1993).This basin was developed between the active American Cordilleran orogenic belt (Sevier Highlands) to the west (Jordan, 1981, Weimer, 1984) and the American stable ...
Until quite recently, the terminal Cretaceous extinctions were a subject that was discussed almost exclusively by paleontologists. The main topic of interest was the disappearance of several major groups of organisms that had dominated Mesozoic fossil assemblages, such as the dinosaurs, most of the cephalopods, the rudists, and the inoceramids (e.g., Schindewolf, 1954), as well as the marked ...
Influence of tectonics and palaeoenvironment on late cretaceous clay sedimentation in the upper benue trough, Nigeria E. I. Enu Department of Geology, University of Ife, Ile‐Ife, Nigeria
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 western and eastern Early Cretaceous North Atlantic commenced as wet and humid, the northern North Atlantic was prone to strong terrigenous deposition. Aptian large eustatic sea level rise, shoaling CCD and heating climate led to widespread clay deposition. The climatic and oceanographic changes led to OAE formation, from the Aptian onward.
The Cretaceous (/ k r ɪ ˈ t eɪ. ʃ ə s /, krih-TAY-shəs) is a geological period that lasted from about 145 to 66 million years ago (mya). It is the third and final period of the Mesozoic Era, as well as the longest.The name is derived from the Latin creta, "chalk".It is usually abbreviated K, for its German translation Kreide.. The Cretaceous was a period with a relatively warm climate ...
Abstract. Georges Millot's thesis (1949) was on the «Relationships between the nature and genesis of argillaceous sedimentary rocks». His last scientific contribution was published in early 1991 a few months before he died and was entitled «About the abundance of smectite minerals in common marine sediments deposited during high sea level stages in late Jurassic-Paleogene times» (Chamley ...
Sequence 1: Callovian-Oxfordian: Sedimentation of the Schieland Group (Central Graben Subgroup) in the Dutch Central Graben commenced in the Middle to Late Callovian G.2 (see pdf) .The sandy fluvial plain sediments of the Lower Graben Formation covered the erosion surface, mostly consisting of Lower to Middle Jurassic Altena Group sediments.The upper part of the succession in particular shows ...
Continental weathering as a driver of Late Cretaceous cooling: new insights from clay mineralogy of Campanian sediments from the southern Tethyan margin to the Boreal realm. Article Mar 2018
During the Cretaceous, organic matter exceeded oxygen supply and sediments served as a sink for organic carbon in the Western Interior. In marine sediments with an excess of organic matter, early diagenesis is a depth-zoned process with three principal metabolic zones: (1) aerobic oxidation, (2) sulfate reduction, and (3) methane generation.
Southeastern Nigeria (Fig.1).Clay mineral distribution was studied in major clay units within the age of Cretaceous (Campanian - Maastrichtian) of the Mamu Formation (Figure 2) in different geological situation, that occurred within the Lower Benue Trough, Southeastern Nigeria, Nigeria (Figure 3). This unit is described briefly.
Late Cretaceous and Cenozoic Geology of the New Madrid Seismic Zone Cretaceous and Cenozoic sedimentation in the Mississippi embayment. Physiographically the modern Mississippi em mation is a calcareous marine clay that thins northward.
Authigenic, volcanogenic, and detrital influences on the Cenomanian–Turonian clay sedimentation in the Western Interior Basin: Implications for palaeoclimatic reconstructions ... The Cretaceous ...
ABSTRACT: Diagenesis in the Cretaceous and Tertiary sediments of the Alava Block (Basque-Cantabrian basin) has been studied using the clay mineralogy (X-ray diffraction) of cuttings from three representative wells of a N S cross-section. More than 5500 m of various lithologies (marls,
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.
The Cretaceous–Paleogene (K–Pg) extinction event, also known as the Cretaceous–Tertiary (K–T) extinction, was a sudden mass extinction of three-quarters of the plant and animal species on Earth, approximately 66 million years ago. With the exception of some ectothermic species such as the leatherback sea turtle and crocodiles, no tetrapods weighing more than 25 kilograms (55 pounds ...
clay sedimentation of the Late Cretaceous is tentatively explained by the combination of favourable factors induced mainly by highstand of the sea-level. The climatic conditions, the reduction of continental areas, the development of carbonate platforms and the decrease in sedimentation rates ...