Upper cretaceous
The Upper Cretaceous Hall Lake Formation is exposed in south-central New Mexico in Sierra County, primarily across the Cutter sag, between the Fra Cristobal Mountains to the north and Caballo Mountains to the south (Kelley and Silver, 1952; Lucas et al., 2019) (Fig. 1).The Hall Lake Formation was previously considered a member of the McRae Formation (e.g., Lozinsky et al., 1984; Wolberg et al ...The Upper Cretaceous to Upper Palaeocene rocks of the Zimam Formation along the southwestern escarpment of the Hun Graben of NW Libya have been stratigraphically investigated from two ...
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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.According to the most popular theory, the Brachiosaurus dinosaur became extinct during the end of the Cretaceous period due to the impact of a meteor on Earth’s surface.Goannas evolved in the northern hemisphere in the Upper Cretaceous Period about 90 million years ago. Discover more. Australia through time. This self-led activity gives students a taste of both the cultural and natural history exhibitions at the Museum as they create their own digital story about ‘Australia through time’.Thanks to the Internet, it’s easier than ever to watch your favorite shows. Fortunately, all you need is an Internet connection, and you can watch on your computer, handheld device or through an Internet connection on your TV. Use the follo...New Chondrichthyans from the Upper Cretaceous (Campanian-Maastrichtian) of Seymour and James Ross Islands, Antarctica Volume 88, Issue 3 Rodrigo A. Otero (a1) , Carolina Simon Gutstein (a1) , Alexander Vargas (a1) , David Rubilar-Rogers (a2) , Roberto Yury-Yañez (a3) , Joaquin Bastías (a4) and Cristián Ramírez (a4)In 2006, technician Diego Rosales of the Universidad Nacional del Comahue discovered a partial postcranial skeleton of a large theropod in an exposure of the Upper Cretaceous (Santonian) Bajo de la Carpa Formation at a site known as Tratayén in Neuquén Province, northwestern Patagonia, Argentina (Fig. 1 A).The specimen was preliminarily reported in an abstract by Porfiri et al. (2008b).The irregular spatial distribution is explained by the fact that in the most of the West Siberian sedimentary basin the Cretaceous is overlapped by Cenozoic sediments (e.g. Kontorovich et al., 2014). Upper Cretaceous outcrops are only available at the flanks of the basin, and in the Yenisei–Khatanga trough in the east.The Upper Cretaceous deposits of the main part of the Kuji Group are distributed along a band running from northwest to southeast of Japan (Fig 1).The Kuji Group is composed of three parts, the Tamagawa, Kunitan, and Sawayama formations (e.g. Terui and Nagayama., 1995; Umetsu and Kurita, 2007).The lower component of the Tamagawa Formation is formed by shallow marine or terrestrial deposits ...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.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.Meniscoessus robustus – Named by Othniel Charles Marsh in 1889. Remains were discovered in Maastrichtian (Upper Cretaceous) and possibly Paleocene strata of Wyoming, Montana, and South Dakota, USA, and the St. Mary's River Formation of Canada. The weight of this species is estimated to have been about 3.3 kilograms (7.3 lb).Isolated shark teeth in Upper Cretaceous rocks of the Russian Far East and northwest Pacific region have been noted sporadically from Sakhalin Island (Glikman, 1980;Nessov and Golovneva, 1990 ...The Mesaverde Group in the Book Cliffs area, Utah (Fig. 1) is a molasse of Upper Cretaceous (Campanian to Maastrichtian) age that prograded from the Sevier Orogenic belt in central Utah eastward across the Western Interior Basin. The Desert Member of the Blackhawk Formation and the overlying Lower Castlegate Sandstone are two of several fluvial ...Legend: 1, pre-Upper Cretaceous-Mesozoic; 2, Upper Cretaceous; 3, Arenisca de Arén Fm., 4, Tremp Fm., 5, Lower Eocene; 6, Upper Palaeogene; 7, recent fluvial valleys. The third locality, Julı́, near Isona (Lleida), is a dark marl with complete shells of Melanopsis near the base of the `Xulı́' beds of Liebau (1973) , lying above La Posa ...The Upper Cretaceous deposits exposed at Petrești (Figs. 1:11, 2), in an artificial outcrop stretching along the Sebeș River that was created slightly more than a decade ago (Codrea et al., 2010; Vremir, 2010; Csiki-Sava et al., 2012), were formed during, and tellingly illustrate, the main depositional events of the Upper Cretaceous megasequence.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 …The Upper Cretaceous limestones are abundantly fossiliferous with a moderately diverse fauna: in fact, the assemblages are usually mono- or oligospecific. From the analysis of the lithofacies, little differentiated physiographic zones can be hypothesized. On shelves like these, also the ecological niches are usually few because conditions are ...Sequence analysis of the upper Cretaceous Two Medicine and Judith River formations, Montana: nonmarine response to the Claggett and Bearpaw marine cycles. Journal of Sedimentary Research 68 : 615 - 631 .The statistical and probabilistic analyses of a database of Upper Cretaceous tropical dinoflagellate cysts from Venezuela allow us to recognize 21 species in the optimal stratigraphic sequence. Compilation of the dinoflagellate cysts reported in ten studies of Upper Cretaceous tropical localities from northern South America and the Gulf of Guinea allow the recognition of a rich assemblage (262 ...Ichthyosaurs from the Upper Triassic (Carnian–Norian) of the New Siberian Islands, Russian Arctic, and their implications for the evolution of the ichthyosaurian basicranium and vertebral column ... (Upper Cretaceous) of the Volga Region, Russia. Cretaceous Research 2020-06 | Journal article DOI: 10.1016/j.cretres.2020.104419 Part …The Upper Cretaceous deposits of northwestern Colombia accumulated in two regions with distinct tectonic settings. The eastern deposits, consisting of Turonian-Maastrichtian rocks from the Upper ...This study examined both vertical and lateral facies changes as well as petrographic characteristics of the outcropping section of the Upper Cretaceous Shendi Formation in the Musawwarat-Naga area ...
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 ...Jan 1, 2022 · The record of Upper Cretaceous sauropods in Neuquén Basin is the richest from South America. It includes about 32 different species, most of them belonging to titanosaurs (Salgado and Bonaparte, 2007; Novas, 2009). To these, is added here the new genus and species, Menucocelsior arriagadai. 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 ...Upper Cretaceous strata of the Abu Roash area are deformed by a series of NE-trending left-stepped en echelon oblique folds, which are sequentially dissected by faults of the following development ...These Upper Cretaceous oceanic red beds (CORB, e.g., Hu and Sarti, 2002, Hu et al., 2005) characterized a majority of deep-marine pelagic and hemipelagic settings in oceanic basins from the early to mid-Turonian onwards with the exception of the equatorial Atlantic (Hofmann et al., 2003).
The upper part of the sequence has yielded Cretaceous benthic foraminifers (Rajashekhar 1991) and nannoplankton species Marthastenites furcatus of the Turonian age (Jafar 1982). The marine incursion in the Late Cretaceous is represented by small isolated outcrops of the Bagh Beds in the Dhar district, Madhya Pradesh (Fig. 15.15 ).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 Maastrichtian ( / mɑːˈstrɪktiən / mah-STRICK-tee-ən) is, in the ICS geologic timescale, the latest age (uppermost stage) of the Late Cretaceous Epoch or Upper Cretaceous Series, the Cretaceous Period or System, and of the Mesozoic Era or Erathem. It spanned the interval from 72.1 to 66 million years ago.…
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The European Upper Cretaceous deposits have yielded an abundant record of dinosaurs and other continental vertebrates with a great number of sites discovered in the last decades (e.g., [1,2,3,4,5,6,7,8]).In this context, particularly relevant are the sedimentary units of the Ibero-Armorican domain, mainly distributed in the Lusitanian (Portugal), Iberian (central Spain), Pyrenees (north ...The dissolved salt contents of Upper Cretaceous and Paleocene to Lower Eocene formation waters were greatly different, with Na concentrations of 7690-29,900 mg/L and 104,000-126,000 mg/L and Cl concentrations of 12,900-47,400 mg/L and 202,000-209,000 mg/L, respectively. Water samples from Upper Cretaceous sandstones have lower Cl and Na ...
Cretaceous was a period of intense tectonics placing India in a drifted position against the context of global paleogeography. India was dismembered from Gondwanaland and drifted northward as an island continent leading to many dramatic changes in basinal configurations as a result of the closure of the Gondwana rift basins as well as the …Find out information about Upper Cretaceous. The late epoch of the Cretaceous period of geologic time, beginning about 90 million years ago. McGraw-Hill Dictionary of Scientific …Along-Strike and Down-Dip Variations in Shallow-Marine Sequence Stratigraphic Architecture: Upper Cretaceous Star Point Sandstone, Wasatch Plateau, Central Utah, U.S.A. Publication Journal of Sedimentary Research
Preliminary study of a diverse dinosaur asse May 9, 2022 · 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. This TDP expedition targeted recovery of excellently preserved microfossils (foraminifera and calcareous nannofossils) for Late Cretaceous paleoclimatic, ... Cretaceous Dinosaurs in Parks. Cretaceous (145 to 66 Ma) dinosaur foThe Upper Cretaceous-Paleocene turbiditic deposits Upper GSSP ratified. 2002 [3] The Albian is both an age of the geologic timescale and a stage in the stratigraphic column. It is the youngest or uppermost subdivision of the Early/Lower Cretaceous Epoch / Series. Its approximate time range is 113.0 ± 1.0 Ma to 100.5 ± 0.9 Ma (million years ago).--Systematic paleontology, Upper Cretaceous, by E.W. Berry, H.A. Pilsbry, J.A. Gardner, R.S. Bassler, W.B. Clark, L.W. Stephenson.--General index.-- ... Upper Cretaceous pelagic red carbonates which consist of The Cretaceous period is one of the major divisions of the geologic timescale, reaching from the end of the Jurassic period, from about 146 to 136 million years ago (Ma) to the beginning of the Paleocene epoch of the Paleogene period, or Tertiary sub-era (about 65.5 to 64 Ma). As the longest geological period, the Cretaceous constitutes nearly half of the Mesozoic.Abstract: The Alpine Orogen contains in South East Europe, from the Carpathians to the Balkans-Srednogorie, an Upper Cretaceous, ore bearing igneous belt: a narrow elongated body which runs discontinously from the Apuseni Mountains in the North, to the western part of the South Carpathians (Banat) in Romania, and further South to the Carpathians of East Serbia and still further East to ... The Maastricht Formation (Dutch: Formatie van Maastricht; abbrevODP Leg 132, with some Upper Cretaceous sediDinosaurios Cretaceous tetrapods of Argen The Upper Cretaceous (Maastrichtian) Lameta Formation is well-known for its osteological and oological remains of sauropods from the eastern and western parts of the Narmada Valley, central India. The newly documented ninety-two titanosaur clutches from Dhar District (Madhya Pradesh State, central India) add further to this extensive data. Previously parataxonomy of these titanosaur clutches ... In the Vitulano area, Upper Cretaceous bauxite bodies fill 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 ... Hence, Upper Cretaceous petroleum system dynamics is i[Despite the abundant literature on limnic CreFollowing a multi-proxy analysis of the U Sections of the Upper Cretaceous (Coniacian to Campanian) Niobrara Formation in two cores from Kansas and Colorado, the Amoco Rebecca Bounds and USGS Portland 1, respectively, were examined by hyperspectral core imaging and analysis. A spectral imaging system combining high-resolution photography (50 μm), 3D laser profiling (20 μm), and near-visible + short-wave infrared reflectance spectroscopy