Upper cretaceous.

Upper Cretaceous and Upper Eocene source rock models support the idea of upwelling-induced enhanced primary bioproductivity, consequent oxygen depletion and deposition and preservation of OM along the Levant Margin, as well as on top of the ESM. Source rocks along the margin form a narrow band of ~50 km parallel to the palaeo shelf break.In this study, we report the occurrence of 3β-methylhopane homologues with carbon numbers up to C 45 in terrigenous source rocks from the first member of the Upper Cretaceous Qingshankou Formation, Songliao Basin, northeast China, with a preliminary assessment of their potential sources assisted by stable carbon isotopic measurements. 2.Abstract and Figures. A new carcharodontosaurid theropod from the Huincul Formation (Aptian-Cenomanian, Upper Cretaceous) of Neuquén Province, Argentina, is described. Approximately the same size ...The Ingersoll shale, a thin (<1 m) clay-dominated lens within the Upper Cretaceous Eutaw Formation exposed in Russell County, Alabama, contains an exceptionally well-preserved, primarily ...

The Upper Cretaceous is the last geological epoch in the Cretaceous. It began 100.5 million years ago, and ended 66 million years ago. The Cretaceous is traditionally …

The Mesozoic extends over 187 million years from the beginning of the Triassic (252 Ma) to the end of the Cretaceous (65.5 Ma). It was a particularly important period for the geology of western Canada. During this time, several continental collisions occurred along the west coast, resulting in the formation of the Rocky Mountains and the.They represent the easternmost occurrence of Upper Cretaceous pelagic red beds of the Tethys. Late Cretaceous oxic oceanic conditions extended into the southern Tethys because the formation was deposited in southern palaeolatitudes. Therefore, the change from a dysoxic/anoxic to an oxic bottom ocean environment during the Late Cretaceous was at ...

The Lance (Creek) Formation is a division of Late Cretaceous (dating to about 69 – 66 Ma) rocks in the western United States. Named after Lance Creek, Wyoming, the microvertebrate fossils and dinosaurs represent important components of the latest Mesozoic vertebrate faunas. The Lance Formation is Late Maastrichtian in age ( Lancian land ...The linkage between marine transgression and lacustrine source rock development has been highlighted for decades. Here, improved understandings were obtained on this challenging issue based on valuable comprehensive profiles from the Upper Cretaceous Songliao Basin, NE China (Qingshankou Formation, brief as K 2 qn 1). 48 shale samples from the Central Depression in the northern Songliao Basin ...the Cretaceous and lower Tertiary and are thought to result from both paleoseismic activity in the region a11d differential compaction of sedimentary deposits (Reinhardt, 1983). Our ability to interpret the distribution of lithofacies within the Upper Cretaceous and lower Tertiary units is strongly affected by their present outcrop pattern.Judith River near the confluence with the Missouri River. Named by. F.V. Hayden, 1871; [2] F.B. Meek, 1876. [3] The Judith River Formation is a fossil -bearing geologic formation in Montana, and is part of the Judith River Group. It dates to the Late Cretaceous, between 79 and 75.3 million years ago, [4] corresponding to the "Judithian" land ...Lower Cretaceous, but I am confident that it is Cenomanian in age and represents the lower part of the Upper Cretaceous as I stated in my "Upper Cretaceous Floras of the World", and in this I am corroborated by European paleontologists from the fauual evidence. Thus the matter stood until 1925, when W. W. Boyer

The field area lies north of Canyon San Fernando (near the town of El Rosario), on the Pacific coastal margin of the Baja California peninsula, Baja California del Norte, Mexico, (Fig. 1).The Rosario Formation is the youngest unit in a belt of Upper Cretaceous deposits comprising the Peninsular Ranges forearc basin complex, which crops out discontinuously along the Pacific margin of Baja ...

The Cretaceous Maha Sarakham Formation in this area consists of evaporite units (Lower Salt and Middle/Upper Salt) interbedded with clastic sediment. Potash minerals in the upper part of the Lower Salt Unit are associated with an underlying thick bed of rock salt. The δ 11 B values of halite (21.46 ‰–32.62‰) indicated a marine origin ...

The Cretaceous period has just two very long epochs: Upper Cretaceous 100.5 million years ago (mya) to 65 mya; Lower Cretaceous 145.5 mya to 100.5 mya. The Lower Cretaceous at ~45 million years, is the longest epoch in the Phanerozoic eon. Though famous for its land fauna, the Cretaceous sea level rose much higher than today.Sep 1, 2021 · These successions correspond to four distinct tectono-sedimentary phases, from older to younger forming the Upper Paleozoic Karoo Supergroup, the Cretaceous Galula Formation, the Oligocene Nsungwe Formation and the Miocene-Recent Lake Beds strata (Roberts et al., 2012) (Fig. 1). Germany is located at the centre of the map. Germany is located between the geologically very old ( Precambrian) East European Craton ( Baltica) to the north and north-east (that further north is exposed as the Baltic Shield ), and the geologically young (Cenozoic) Alpine - Carpathian Orogen to the south. The corresponding crustal provinces of ...The Cenomanian is, in the ICS ' geological timescale, the oldest or earliest age of the Late Cretaceous Epoch or the lowest stage of the Upper Cretaceous Series. [4] An age is a unit of geochronology; it is a unit of time; the stage is a unit in the stratigraphic column deposited during the corresponding age. Download scientific diagram | A, Geographical and geological situation of Upper Cretaceous outcrops in the Southern Pyrenees and distribution of the ...The meaning of CRETACEOUS is of, relating to, or being the last period of the Mesozoic era characterized by continued dominance of reptiles, emergent dominance of angiosperms, diversification of mammals, and the extinction of many types of organisms at the close of the period; also : of, relating to, or being the corresponding system of rocks.

A new genus and species of an elasmosaurid plesiosaur, Futabasaurus suzukii, is described based on a partial skeleton from the Inoceramus amakusensis Zone (Lower Santonian, Upper Cretaceous) of ...Recently, a construction project in the Upper Cretaceous red beds of the Ganzhou Basin, Jiangxi Province, China revealed a fossilized clutch of spheroolithid eggs. In this contribution, we briefly describe two of these eggs and their embryonic contents, accessioned at the Yingliang Stone Natural History Museum (YLSNHM) in Fujian Province, China.Despite this, species of carcharodontosaurians have been recovered from two lower Upper Cretaceous formations (Cenomanian and Turonian) of Asiamerica and include large taxa [5,6]. As the apex predators in these early Late Cretaceous ecosystems, their faunal associations with other predators, particularly tyrannosauroids, are poorly known.The Santonian is an age in the geologic timescale or a chronostratigraphic stage. It is a subdivision of the Late Cretaceous Epoch or Upper Cretaceous Series. It spans the time between 86.3 ± 0.7 mya ( million years ago) and 83.6 ± 0.7 mya. The Santonian is preceded by the Coniacian and is followed by the Campanian.In this article, we have obtained new paleomagnetic and magnetic anisotropy datasets from the upper Cretaceous to lower Eocene sedimentary rocks in the Cuojiangding area, and combined them with published paleomagnetic data, regional geological reports, biostratigraphic ages and U Pb zircon geochronology to discuss their tectonic implications. 2.Taxonomy and paleoecology of lyssacinosan Hexactinellida from the Upper Cretaceous (Coniacian) of Bornholm, Denmark, in comparison with other Postpaleozoic representatives. Abhandlungen der Senckenbergischen Naturforschenden Gesellschaft , …This research focuses on Upper Cretaceous geological units using legacy industry 2-D seismic reflection and well data. It provides an integrated description and ...

Oct 18, 2023 · Cretaceous Period, in geologic time, the last of the three periods of the Mesozoic Era. The Cretaceous began 145.0 million years ago and ended 66 million years ago; it followed the Jurassic Period and was succeeded by the Paleogene Period (the first of the two periods into which the Tertiary Period was divided).

Upper Cretaceous dinosaur remains from Afro-Arabia are rare and mainly restricted to pre-Turonian horizons. Consequently, the discovery of new fossils from Upper Cretaceous deposits in the Western Desert, central Egypt is significant because it adds to the meager record of dinosaurs described from this landmass.The aim of the present paper is to develop a lower Upper Cretaceous standard section for the southern MCB, to provide a detailed integrated correlation on intra- and interbasinal scales, and to discuss the sea-level and facies development. Furthermore, it is intended to calibrate the controversial stratigraphic position of Soest Grünsand ...One of the most common causes of thigh pain is muscle strain, according to WebMD. Less common causes include vascular disease, blood clots and arthritis. Some causes of upper thigh pain include:The Mount Eagle Group includes all the Upper Cretaceous sedimentary rocks and is composed of two interfingering facies, epiclastic volcanic sedimentary rocks and tuffaceous sedimentary rocks, both deposited below wave base in a marine environment. A turbidite sequence more than 8000 and perhaps 18,000 feet thick of epiclastic volcanic ...The Lower Cretaceous (Albian) Kharita Formation is composed of sandstone interbedded with shales and siltstone. The Upper Cretaceous (Cenomanian) Bahariya Formation consists mainly of sandstone, with thin streaks of shales and limestone (Kandil 2003). The sandstones are the main gas and/or condensate pay zone.Small abelisaurids are also known from the Upper Cretaceous of Europe, including Tarascosaurus from the Campanian of France (Le Loeuff and Buffetaut, 1991), Betasuchus from the Maastrichtian of the Netherlands (Seeley, 1883; Le Loeuff and Buffetaut, 1991; Tortosa et al., 2014), and an unnamed species from the lower Maastrichtian of France ...

Cretaceous deposits in the area have previously produced dinosaur fossils, and the Paleocene occasionally contains reworked Upper Cretaceous fossils. Based on observations of several short-lived, partial exposures in the greater vicinity (e.g., MMNS locality MS.73.030), a persistent phosphatic fossil assemblage occurs in the uppermost part of ...

Upper Cretaceous sections at the Tanama River are located on the Sigirte-Nado elevation, surrounded by the Tanama River from the west, north, and east (Fig. 3 B). The Tanama River is the left-bank tributary of the Yenisei River. It is located in the north-eastern part of the West Siberian sedimentary basin (e.g. Kontorovich et al., 2014).

Aerotitan sudamericanus, from the Upper Cretaceous of the Neuquén Basin (Patagonia, Argentina), is known from a partial jaw fragment which has been interpreted as either an azhdarchid upper jaw, azhdarchid lower jaw, or thalassodromine upper jaw (as the sister-group of Alanqa).Here, we compare it in detail to upper and lower jaws of taxa belonging to all azhdarchoid lineages.Furcatoceratops (meaning "forked horned face") is a genus of centrosaurine ceratopsid dinosaur from the Late Cretaceous Judith River Formation of Montana. The type species is Furcatoceratops elucidans. Discovery and naming NSM PV 24660, which is the holotype specimen ... NSM PV 24660 was collected from rocks of the upper Coal Ridge Member ...In the Zagros area and the Persian Gulf, Upper Cretaceous carbonate sequences are among the most important hydrocarbon reservoirs. In this study, facies analysis and stratigraphic interpretation of these sequences, Cenomanian-Santonian in age, have been carried out in subsurface sections from various parts of the Zagros area (including the Dezful Embayment and Fars Province) and the Persian ...These variations result from the reactivation of an ante-Cretaceous NE-SW to E-W preexisting fault, which has controlled the sedimentation of the Cretaceous series in an N-S direction. Likewise, this tectonic inheritance is associated to a well pronounced synsedimentary tectonic activity, which is clearly involved in the structuring of Upper ...In open-marine accumulations, a peculiarly common mode of occurrence within Upper Cretaceous hemipelagic (marly chalk) facies of southeastern states, simple floatation of a dinosaurian cadaver into deep-water shelfal areas is the only mechanism involved (Figure 3c; Langston, 1960; Schwimmer, 1996). Such a cadaver, dried on its top side and ...of the fossils. I recognized several well-known Upper Cretaceous species. (Matthes, 1933, p. 1007-1009.} A collection made from the oolitic clay in Janu­ ary 1933 by Willard Farrar of the Missouri Geological Survey and Water Resources showed that, in addition to the. Cretaceous fossils, the clay contained severalApr 15, 2014 · The Late Cretaceous (100.5–66 Ma) is the younger of two epochs into which the Cretaceous period is divided in the geologic timescale. Rock strata from this epoch form the Upper Cretaceous series. The Cretaceous is named after the white limestone known as chalk which occurs widely in northern France and is famously seen in the white cliffs of ... Additional resources. The Cretaceous period was the last and longest segment of the Mesozoic era. It lasted approximately 79 million years, from the minor extinction event that closed the Jurassic ...Upper Cretaceous subsurface stratigraphy and structure of coastal Georgia and South Carolina is based on the study of 24 wells along two transects, one extending across the seaward-dipping sedimentary basin termed the 'Southeast Georgia Embayment' northeastward to the crest of the Cape Fear Arch, and the other alined east-west, parallel to the basin axis and including the COST GE-l well on the OutThe ichnofossil assemblage from the Upper Cretaceous Kem Kem beds contributes evidence for a transition from predominantly terrestrial to marine deposition. Body fossil and ichnofossil records ...First Upper Cretaceous dinosaur track assemblage from Jordan (Middle East) - preliminary results September 2020 Annales Societatis Geologorum Poloniae 90:331 - 342The Campanian is the fifth of six ages of the Late Cretaceous Epoch on the geologic timescale of the International Commission on Stratigraphy (ICS). In chronostratigraphy, it is the fifth of six stages in the Upper Cretaceous Series.Campanian spans the time from 83.6 (± 0.2) to 72.1 (± 0.2) million years ago. It is preceded by the Santonian and it is followed by the Maastrichtian.

Prince Creek Formation. / 70.0; -151.5. / 83.2; -115.9. The Prince Creek Formation is a geological formation in Alaska with strata dating to the Early Maastrichtian stage of the Late Cretaceous. Dinosaur remains are among the fossils that …The Cretaceous-Paleogene extinction that wiped out the nonavian dinosaurs 66 million years ago was correlated with two extreme events: The Chicxulub impact occurred at roughly the same time that massive amounts of lava were erupting from the Deccan Traps (see the Perspective by Burgess). ... providing complete coverage of the upper four Deccan ...Jul 26, 2022 · The Cretaceous period was the last and longest segment of the Mesozoic era. It lasted approximately 79 million years, from the minor extinction event that closed the Jurassic period about 145 ... The upper Cretaceous to Paleogene sediments of the Gosau Group of the Northern Calcareous Alps (NCA) are unconformably and diachronously overlying Permian to lower Cretaceous units that experienced folding and faulting (Wagreich and Faupl, 1994).Instagram:https://instagram. att login firstnetwww o'reilly auto partshaiti colonized by francehow to run a focus group meeting Chucarosaurus diripienda gen. et sp. nov. is a new and large titanosaurian sauropod from the Neuquén Basin, Rio Negro Province, Patagonia. The specimen was discovered in the Upper Cretaceous strata of the Huincul Formation (middle Cenomanian-lower Turonian). It includes appendicular and relatively slender elements, with a femoral total length of about 1.9 m long.A new genus and species of an elasmosaurid plesiosaur, Futabasaurus suzukii, is described based on a partial skeleton from the Inoceramus amakusensis Zone (Lower Santonian, Upper Cretaceous) of ... rainboltcurved greatswords ds3 Highlights. Two new leptoceratopsids are described from the Campanian and Santonian of Alberta. The Campanian taxon has a unique dentary tooth shape not shared by other leptoceratopsids. The Santonian taxon represents the oldest known leptoceratopsid (∼83 Ma). The Santonian taxon represents the smallest adult-sized ceratopsian from North America.Cretaceous Period - Climate, Extinction, Dinosaurs: In general, the climate of the Cretaceous Period was much warmer than at present, perhaps the warmest on a worldwide basis than at any other time during the Phanerozoic Eon. The climate was also more equable in that the temperature difference between the poles and the Equator was about one-half that of the present. Floral evidence suggests ... thomas robinson block missouri 10 de fev. de 2023 ... Upper Cretaceous–Paleocene Magnetostratigraphy of the Longmenshan Foreland Basin and Its Implications for the Tectonic Deformation of the ...Recently, a construction project in the Upper Cretaceous red beds of the Ganzhou Basin, Jiangxi Province, China revealed a fossilized clutch of spheroolithid eggs. In this contribution, we briefly describe two of these eggs and their embryonic contents, accessioned at the Yingliang Stone Natural History Museum (YLSNHM) in Fujian Province, China.