نتایج جستجو برای: upper albian

تعداد نتایج: 205454  

Journal: :Marine and Petroleum Geology 2021

2D multi-channel seismic profiles and a 3D survey were utilised together with potential field available well data to study the late Mesozoic-Cenozoic tectono-stratigraphic evolution of northern Lofoten-Vesterålen margin, offshore Norway. The analysis resulted in an updated structural stratigraphic framework, new better refined elements. Distinct along-margin basin segmentation is evident impose...

Journal: :Frontiers in Earth Science 2023

Integrated organic petrographic and geochemical analyses were made on organic-rich marine carbonate mixed clastic-carbonate rocks of Middle–Late Jurassic Early Cretaceous age from the Shushan Basin, Egypt to evaluate their hydrocarbon potential. Analyses allowed identification depositional settings, paleoclimate, three third order genetic stratigraphic sequences (SQ) with deposits assigned high...

Journal: :Climate of The Past 2021

Abstract. The Early Cretaceous is characterized by warm background temperatures (i.e., greenhouse climate) and carbon cycle perturbations that are often marked ocean anoxic events (OAEs) associated shifts in the hydrologic cycle. Higher-resolution records of terrestrial marine δ13C δ18O (both carbonates organics) suggest climate during Aptian–Albian, including a period with OAE 1a early Aptian ...

Journal: :Cretaceous Research 2021

Coal seams preserve continuous and high-resolution records of paleoenvironments wildfire events during peat accumulation. In order to elucidate characteristics terrestrial climate changes the time accumulation, petrographic coals in Lower Cretaceous Yimin Formation (Albian) Jiuqiao Sag, Hailar Basin, NE China were studied. petrology analysis shows that studied coal are characterized by dominant...

Journal: :Journal of Vertebrate Paleontology 2021

Ferrodraco lentoni, an anhanguerid from the Upper Cretaceous Winton Formation of northeast Australia, is most complete Australian pterosaur described to date, represented by a partial cranium, incomplete cervical series and wing elements. Herein we present comprehensive osteological description Ferrodraco, as well emended diagnosis for this taxon. In addition, compare with other isolated remain...

Journal: :Gondwana Research 2021

The mid-Cretaceous (Albian and Cenomanian, 113–93.9 Myr) marked a transformative interval of shark evolution during which lamniforms (mackerel sharks) diversified as dominant marine predators. Yet, their radiation dynamics relative to major biotic turnovers delimiting the Albian–Cenomanian Cenomanian–Turonian boundaries are incompletely understood. Here, we use high-resolution dental fossil rec...

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