Results 41 to 50 of about 100,442 (300)

Foraminiferal Biostratigraphy of the Uppermost Cretaceous Period, Duhok Area, Kurdistan Region, North of Iraq

open access: yesIraqi Geological Journal, 2021
A relatively complete Late Maastrichtian succession of the upper part of the Shiranish Formation (Upper Cretaceous) in the Duhok area is investigated for the planktic foraminiferal assemblages. This studied interval consists mainly of bluish shale, marl,
Abdulrahman Bamerni
doaj   +1 more source

New titanosauriform (Dinosauria: Sauropoda) specimens from the Upper Cretaceous Daijiaping Formation of southern China [PDF]

open access: yesPeerJ, 2019
Titanosauriform sauropod dinosaurs were once considered rare in the Upper Cretaceous of Asia, but a number of titanosauriforms from this stratigraphic interval have been discovered in China in recent years.
Fenglu Han   +5 more
doaj   +2 more sources

High-precision U-Pb ages in the early Tithonian to early Berriasian and implications for the numerical age of the Jurassic-Cretaceous boundary [PDF]

open access: yes, 2019
The numerical age of the Jurassic-Cretaceous boundary has been controversial and difficult to determine. In this study, we present high-precision U-Pb geochronological data around the Jurassic-Cretaceous boundary in two distinct sections from different ...
Aguirre-Urreta, Maria Beatriz   +10 more
core   +1 more source

New understanding and exploration direction of hydrocarbon accumulation in Termit Basin, Niger

open access: yesPetroleum Exploration and Development, 2023
Based on the seismic and drilling data, casting thin sections, geochemical analysis of oil and rock samples, and hydrocarbon generation history simulation, the hydrocarbon accumulation characteristics and exploration direction of Termit superimposed ...
Shengqiang YUAN   +8 more
doaj   +1 more source

New record of Abelisauroid Theropods from the Bauru group (upper cretaceous), São Paulo State, Brazil [PDF]

open access: yes, 2014
Isolated bones of abelisauroid theropods from the Bauru Group (Late Cretaceous, Brazil), are described. They correspond to three individuals represented by fused ischia and part of the ilium, a partial axis, and a right fi bula, respectively. The fossils
Iori, Fabiano V.   +2 more
core   +1 more source

I.—Upper Cretaceous Terebelloids from England [PDF]

open access: yesGeological Magazine, 1911
In April, 1879, William Davies published in the GeologicalMagazine (n.s., Dec. II, Vol. VI. pp. 145–8) a paper on “Some Fish Exuviæ from the Chalk, generally referred to Dercetis elongatus, Ag.; and on a new species of Fossil Annelide, Terebella Lewesiensis”.
openaire   +1 more source

Scientific Drilling of the Terrestrial Cretaceous Songliao Basin [PDF]

open access: yesScientific Drilling, 2008
Investigations of critical climate changes during the Cretaceous have the potential to enhance our understanding of modern global warming because the extreme variances are the best-known and most recent example of a greenhouse Earth (Bice et al., 2006 ...
Terrestrial Scientific Drilling of the Cretaceous Songliao Basin Science Team   +2 more
doaj   +1 more source

Geological Characteristics of the Mesozoic Unconformities in Eastern Heilongjiang, NE China: Implications for the Mesozoic Continental Margin Evolution of Northeast Asia

open access: yesFrontiers in Earth Science, 2022
Most of the significant petroleum- and coal-bearing sedimentary basins in Northeast Asia originated via rifting and thermal subsidence during the Late Jurassic-Early Cretaceous, followed by basin inversion in the Late Cretaceous.
Xueqin Zhao   +6 more
doaj   +1 more source

Upper Cretaceous Mollusca from Southern California [PDF]

open access: yes, 1937
One new genus and thirteen new species of Mollusca are described from the Upper Cretaceous fauna of the Santa Ana Mountains, southern California. New generic assignments based upon discovery and study of previously unobserved structural features are ...
Popenoe, Willis Parkison
core  

Home - About - Disclaimer - Privacy