At Site 167 a nearly complete sedimentary section ranging in age from Pleistocene to Tithonian and composed almost entirely of calcareous ooze, chalk, cherty chalk, cherty limestone, and argillaceous limestone was drilled to a depth of approximately 1170 meters where the basaltic basement was reached. The relative continuity and age of the section makes it useful for studies of deep-sea diagene...

BACKGROUND Southwestern Henan Province in central China contains many down-faulted basins, including the Xixia Basin where the Upper Cretaceous continental sediments are well exposed. The Majiacun Formation is a major dinosaur-bearing stratigraphic unit that occurs in this basin. METHODOLOGY/PRINCIPAL FINDINGS A new basal hadrosauroid dinosaur, Zhanghenglong yangchengensis gen. et sp. nov., i...

Studying the evolution and biogeographic distribution of dinosaurs during the latest Cretaceous is critical for better understanding the end-Cretaceous extinction event that killed off all non-avian dinosaurs. Western North America contains among the best records of Late Cretaceous terrestrial vertebrates in the world, but is biased against small-bodied dinosaurs. Isolated teeth are the primary...

The new genus Gosavisiphon with the type-species Halimeda paucimedullaris SCHLAGINTWEIT & EBLI, 1998, tentatively referred to the Udoteaceae, is described from the Late Cretaceous (Middle/Late Cenomanian-Santonian) of the Branderfl eck Formation and the Lower Gosau Subgroup of the Northern Calcareous Alps (Austria, Germany). It is a plurimillimetric to pluricentimetric marine, hard-substrate dw...

Dezful embayment contains several potential source rocks deposited in tectonically active environments. Existence of various source rocks with different geological ages makes this area one of the most prolific regions throughout the Middle East. The Pabdeh Formation (Lower Paleocene-Eocene), the Gurpi Formation (Santonian-Masstrichtian), the Kazhdumi Formation (Albian) and the Gadvan Formation ...

Abstract The structure and tectonic evolution of the Cretaceous rift basins southern Egypt are poorly understood. In this study, tectonostratigraphy Komombo Basin has been determined using seismic, well biostratigraphic data. basin is compared to Kharit, Nuqra Beni Suef in as Muglad Sudan. a 58 km long, 28 wide NW–SE trending half‐graben infilled with 2200 m Berriasian‐Maastrichtian sediments o...

Rare erratic clasts – extraneous rock types occur in the Upper Cretaceous Chalk, including a local basal facies, Cambridge Greensand. The underlying Albian Gault Clay and Hunstanton Red Chalk Formations have also yielded erratics. discovery of these erratics, their description development hypotheses to explain origins significance are reviewed. They became subject scientific interest with inter...