Upper cretaceous.

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). January 2013 [2] The Coniacian is an age or stage in the geologic timescale. It is a subdivision of the Late Cretaceous Epoch or Upper Cretaceous Series and spans the time between 89.8 ± 1 Ma and 86.3 ± 0.7 Ma (million years ago). The Coniacian is preceded by the Turonian and followed by the Santonian.The Upper Jurassic succession contains the Baicheng Fm. The Huoshiling, Shahezi, Yingcheng, Denglouku, and Quantou Fms compose the Lower Cretaceous section; and Upper Cretaceous strata include the Qingshankou (K 2 qn), Yaojia, Nenjiang (K 2 n), Sifangtai, and Mingshui Fms (Gao and Cai, 1997).. The sediments of K 2 qn and K 2 n were deposited in a semideep lake during global sea level rise (Liu ...It is during the Cretaceous that the first ceratopsian and pachycepalosaurid dinosaurs appeared. Also during this time, we find the first fossils of many insect ...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.

Upper Cretaceous Stratigraphy and Depositional Environments of Western Kansas by Donald E. Hattin, Indiana University, and Charles T. Siemers, Cities Service Company Assisted by Gary F. Stewart, Oklahoma State University. Originally published in 1978 as Kansas Geological Survey Guidebook 3. The book was reprinted in 1987 with some modifications.

Figure 1 Early Cretaceous paleogeography and principal fossiliferous exposures in central Niger. (A) Maps showing Niger and the location of the fossiliferous exposures in the Tiourarén Formation (localities: 1, Tiourarén and In Kaf; 2, Tamerát; 3, Fako and In Abaka; and 4, Tawachi) and middle horizons of the Tegama Group (Gadoufaoua); latitude in degrees north, longitude in degrees east.The regional Cretaceous structural and isopach/lithofacies maps of the Middle East provide a unique overview of the major tectonic and stratigraphic developments in the leading petroleum basin of the World. The structural map of the Near Top Cretaceous and the Upper Cretaceous isopach show that most of the tectonic elements of the region ...

Only two Cretaceous source rocks exist in the NRB, the Upper Cretaceous Donga and the Upper Cretaceous Yogou source rocks. The source rock of the Yogou Formation is the most prolific in the entire NRB and has basin-wide distribution (Zhou et al., 2017; Xiao et al., 2019).late Upper Cretaceous strata along a west-to-east transect from Virden, New Mexico, to Del Rio, Texas (Fig. 1), using ammonites and inoceramid bivalves, and (2) to provide a provisional faunal zonation for this area that links it with the better known zonation for the Western Interior (Fig. 2). Late Cretaceous ammonite faunas from southwest New ...ODP Leg 132, with some Upper Cretaceous sediment recovered at Sites 47, 48, 305, 577, and 810. The Cretaceous sections recovered at all sites during Leg 198 were characterized by pure nannofossil ooze in the Campanian and Maastrichtian and chert with nannofossil ooze and porcellanite in the older Cretaceous sections. The presence of ubiqui-the Upper Cretaceous Tuscaloosa and Woodbine Formations, Western Gulf Province of the Gulf Coast Region, Louisiana and Texas, 2007 Printed on recycled paper Introduction The U.S. Geological Survey (USGS) completed an assessment of the undiscovered natural gas resources of the Upper Cretaceous Tuscaloosa and Woodbine Formations in the downdip

This upper Cretaceous source provides good oil source rocks in most parts of The Western Desert and moderate-quality gas source rocks in the Umbaraka area. Significant amounts of oil believed to have been generated from this source, are located in the Abu Gharadig and Gindi basins (Schlumberger 1995).

Large carnivorous dinosaurs, are common in the Late Cretaceous of Asia, but only some fragment teeth have been recovered from southern China. In a paper published in the latest issue of Vertebrata ...

The Upper Cretaceous to Paleogene sequences in the Middle East are characterized by regional anoxic black shale occurrences, enriched in different stratigraphic levels of various local basins (Abed et al., 2005; Almogi-Labin et al. 1990a, 1993; Ashckenazi-Polivoda et al., 2010, 2011; Holbourn et al., 1999; Inan et al., 2010). The studied black ...Despite the abundant literature on limnic Cretaceous ostracode faunas, the database on mid-Late Cretaceous taxa is still scarce. The Songliao Basin in northeastern China preserves a diverse assemblage of ostracode fossils from the Santonian–Campanian Nenjiang and Sifangtai formations.Type of Dinosaur: Theropod Existed: Late Cretaceous, 71-68 Mya Where found: Alberta, Canada Estimated length: 8-10 m (26-33 ft.) Albertosaurus was a member of the dinosaur family Tyrannosauridae (the same family to which T. rex and Gorgosaurus belong). The first Albertosaurus specimen to be found was a partial skull. It was …The Cretaceous (IPA: / 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.At around 79 million years, it is the longest geological period of the entire Phanerozoic.The name is derived from the Latin creta, "chalk", which is abundant in the latter ...... Upper Cretaceous (Senonian) formations. Figure 1 Facies map and schematic paleogeographic reconstruction of the Moroccan Atlas region during the Late ...Numerous feathered dinosaur specimens have recently been recovered from the Middle-Upper Jurassic and Lower Cretaceous deposits of northeastern China, but most of them represent small animals 1 ...

The 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 …1 de abr. de 2013 ... Sequence stratigraphy of the lower Upper Cretaceous (Upper Cenomanian - Turonian) of the Eastern Desert, Egypt ... Late Cretaceous transgression.This upper Cretaceous source provides good oil source rocks in most parts of The Western Desert and moderate-quality gas source rocks in the Umbaraka area. Significant amounts of oil believed to have been generated from this source, are located in the Abu Gharadig and Gindi basins (Schlumberger 1995). Typical oil source rocks are present in non ...ODP Leg 132, with some Upper Cretaceous sediment recovered at Sites. 47, 48, 305, 577, and 810. The Cretaceous sectio ns recovered at all sites. d u r i n g L e g 1 9 8 w e r e c h a r a c t e r i ...The Upper Cretaceous Qingshankou Formation in the Songliao Basin, NE China is known to contain excellent petroleum source rocks. In addition, it serves as a valuable record to study depositional conditions within the water column and climatic change.Only two Cretaceous source rocks exist in the NRB, the Upper Cretaceous Donga and the Upper Cretaceous Yogou source rocks. The source rock of the Yogou Formation is the most prolific in the entire NRB and has basin-wide distribution (Zhou et al., 2017; Xiao et al., 2019). The Donga Formation is predominantly Type III kerogen of very poor to ...

IN THIS PAPER the discovery in Japan of smaller Foraminifera from the Upper Cretaceous strata is recorded for the firsi: time. This contribution, in addition to ...The geological and paleoenvironmental setting and the vertebrate taxonomy of the fossiliferous, Cenomanian-age deltaic sediments in eastern Morocco, generally referred to as the “Kem Kem beds”, are reviewed. These strata are recognized here as the Kem Kem Group, which is composed of the lower Gara Sbaa and upper Douira formations. Both …

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 ...The Bellezma-Batna Mountains of northeast Algeria mainly consist of Jurassic-Cretaceous platform carbonate deposits (Marmi, 1995 ), forming the eastern part of the …During the last three decades, several basal ceratopsians have been unearthed in Upper Jurassic and Lower Cretaceous strata in Asia and North America, including Yinlong downsi 1, Chaoyangsaurus ...The alvarezsaurids are best known from the Upper Cretaceous of the Gobi Desert in Mongolia and northern China, although they are among the rarest theropod dinosaurs there. Even the fragmentary specimen PIN 5838/1, the holotype of Ondogurvel alifanovi described herein is among the most complete alvarezsaurid specimens known from the Gobi Desert.The Upper Cretaceous Ilhabela sandstones, which represent the main reservoir unit in the Santos Basin, were deposited in a fluvial to shallow marine environment during a period of active basaltic ...English: Map of North America with the Western Interior Seaway during the Campanian (Upper Cretaceous). Paleogeography of North America during the late Campanian Stage of the Late Cretaceous (∼75 Ma). Modified after Blakey. Deutsch: Karte von Nordamerika mit dem Western Interior Seaway während des Campaniums (Obere …

The Upper Cretaceous Nenjiang lacustrine shale (K 2 n) is one of the most essential hydrocarbon source rocks in NE China with massive OM deposition across the Santonian-Campanian boundary interval, which can be correlated with the terminal stage of the last oceanic anoxic event in the Cretaceous, OAE3. This study focuses on the lower part of ...

The Upper Cretaceous Lameta (~infratrappean) Formation of the Jabalpur area (Madhya Pradesh, Central India) preserves one of the most diverse Late Cretaceous reptilian assemblages (largely dominated by dinosaurs) and other significant biotic elements of the Indian subcontinent. The Lameta Formation in the Jabalpur region comprises excellent ...

If this is the case, then Gryphoceratops is the smallest adult-sized ceratopsian known from the Upper Cretaceous of North America and one of the smallest known ornithischians. More complete leptoceratopsid specimens from the Milk River Formation are required to clarify the taxonomic relationships and adult size of Gryphoceratops.The basin fill thins toward the basin margins (Fig. 1) and is dominated by Cretaceous terrigenous successions. The Upper Cretaceous strata composed of the Qingshankou (K 2 qn), Yaojia (K 2 y), Nenjiang (K 2 n), Sifangtai (K 2 s) and Mingshui (K 2 m) formations (Fig. 1) comprise excellent source rocks in the Qingshankou (K 2 qn) and Nenjiang (K ...The fossils were unearthed from the sandstone bed of the Upper Cretaceous Quantou Formation in Shanqian Village, Liufangzi Town, Gongzhuling City, Changchun Area, Jilin Province, China. Dromaeosaurids are small to medium-sized carnivorous dinosaurs, and they occur from the Early Cretaceous to the Late Cretaceous ( Turner et al., 2012 ).Apr 21, 2020 · The 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 ... Udanoceratops belonged to the Ceratopsia (the name is derived Greek meaning 'horned face'), a group of herbivorous dinosaurs with parrot -like beaks which thrived in North America and Asia during the Cretaceous Period. [1] It is placed within the Leptoceratopsidae, as the only Asian representative at the time, along with the North …The integument of the theropod dinosaur Carnotaurus sastrei from the Upper Cretaceous of Argentina is here described in detail for the first time. The scaly skin of this abelisaurid is the most completely preserved of any theropod and the only example of this form of integument known outside of Tetanurae (excluding footprints).Upper Cretaceous (Maastrichtian and Campanian) hydrocarbon source rocks from the Latrobe Group, Gippsland Basin (Australia) have been analysed using gas chromatography-mass spectrometry (GC-MS) in order to understand their geochemical characteristics and to reconstruct palaeovegetation and palaeoclimate changes.The Cretaceous is divided into Early and Late Cretaceous epochs, or Lower and Upper Cretaceous series. In older literature the Cretaceous is sometimes divided into three series: Neocomian (lower/early), Gallic (middle) and Senonian (upper/late). A subdivision in eleven stages, all originating from European stratigraphy, is now used worldwide. ...PDF | On May 20, 2022, K.M. Edgar and others published Data report: Cenozoic and Upper Cretaceous bulk carbonate stable carbon and oxygen isotopes from IODP Expedition 369 Sites U1513, U1514, and ...

Sand is a normal marine Upper Cretaceous sand-facies assem­ blage typical of the level-bottom shelf area. It is character­ ized by its variety of gastropods and numerous burrowing pelecypods. In contrast the fauna of the upper part of the Coffee Sand is dominated by surface-dwelling and attachedJudith 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 ...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 ... Instagram:https://instagram. salary of lpnwhat is considered a standard alcoholic drinkdingbats level 125deca assessment Apr 1, 2022 · The upper Cretaceous biostratigraphic marker species in tropical areas are considered important events for the present study, and some have been incorporated and are called unique events (UE). In the graphic representation, they are identified by a double asterisk, and since they are present in less than four out of seven wells, RASC does not ... jayhawks radio networkku game stream 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.Type of Dinosaur: Theropod Existed: Late Cretaceous, 71-68 Mya Where found: Alberta, Canada Estimated length: 8-10 m (26-33 ft.) Albertosaurus was a member of the dinosaur family Tyrannosauridae (the same family to which T. rex and Gorgosaurus belong). The first Albertosaurus specimen to be found was a partial skull. It was … kansas public employees retirement system A limited exposure of Upper Cretaceous marine siltstones and claystones near the coastal town of Carlsbad, California, contains a remarkably well-preserved ...The Kem Kem beds in South Eastern Morocco contain a rich early Upper (or possibly late Lower) Cretaceous vertebrate assemblage. Fragmentary remains, predominantly teeth and jaw tips, represent several kinds of pterosaur although only one species, the ornithocheirid Coloborhynchus moroccensis, has been named.Here, we describe a new azhdarchid pterosaur, Alanqa saharica nov. gen. nov. sp., based ...7 de set. de 2018 ... At the time the Upper Cretaceous portion of the formation was deposited, central western Queensland was at ∼50°S palaeolatitude (Li & Powell, ...