Field investigations in the northwestern segment of Greater Caucasus, a Late Cenozoic orogen, have permitted establishment two new geosites, namely Ubin and Bezeps geosites. Both represent Berriasian–Middle Valanginian (Early Cretaceous) marine deposits with abundant trace fossils. The latter are attributed to Nereites ichnofacies indicate on deep palaeoenvironments (this interpretation challen...

Herein are presented the results of detailed bio- (calcareous dinocysts, calpionellids, foraminifers, saccocomids) and chemostratigraphic (δ13C) studies combined with high-resolution microfacies, rock magnetic and gamma-ray spectrometry (GRS) investigations performed on upper Kimmeridgian–upper Valanginian carbonates of Giewont succession (Tatricum, Maly sections, Western Tatra Mountains, Polan...

Palynostratigraphy and palynofacies analyses are applied to identify transgressive-regressive sequences changes in paleoenvironment through the Middle Jurassic–Early Cretaceous succession of Ramså Basin on Andøya. The conglomerate, succeeding lacustrine-swamp deposits Hestberget Kullgrøfta members (Ramså Formation) overlying terrestrial marginal marine lower Bonteigen Member Formation), compris...

The stable carbon isotopic compositions of carbonate sediments (?13Ccarb) have been widely used to reconstruct the global cycle and as a stratigraphic correlation tool. This work investigates ?13Ccarb record marine organic-rich, mixed siliciclastic?carbonate mudstones accumulated from Tithonian (late Jurassic) early Valanginian (early Cretaceous) in retro-arc basin connected Proto-Pacific Ocean...

Pulau Rote terletak di sebelah selatan busur Banda nonvulkanik memiliki batuan sedimen berumur Kapur yang merupakan bagian dari sikuen Australia/Kolbano. Batuan Mesozoikum Australia Barat Laut potensi menghasilkan hidrokarbon. dikelompokkan kedalam Formasi Menuatau ekuvalensinya berperan sebagai tudung pada cekungan Laut. Litofasies Menu terdiri batugamping, napal, dan rijang dengan komponen ut...

The Valanginian stage (Early Cretaceous) includes an episode of significant environmental changes, which are well defined by a positive δ13C excursion. This globally recorded excursion indicates important perturbations in the carbon cycle, which has tentatively been associated with a pulse in volcanic activity and the formation of the Paraná-Etendeka large igneous province (LIP). Uncertainties ...

The sauropod dinosaur "Pelorosaurus" becklesii was named in 1852 on the basis of an associated left humerus, ulna, radius and skin impression from the Early Cretaceous (Berriasian-Valanginian) Hastings Beds Group, near Hastings, East Sussex, southeast England, United Kingdom. The taxonomy and nomenclature of this specimen have a complex history, but most recent workers have agreed that "P." bec...

Terrestrial ecosystems from the Lower Cretaceous of Europe and bonebeds formed in swampy environments are poorly known. The Berriasian-early Valanginian Angeac-Charente site France represents an example both. Nine field campaigns have yielded thousands fossils over a hundred taxa, including 16 taxa vertebrate macroremains with numerous trample crocodile bite marks; 22 abundant microremains; >10...