Late Maastrichtian to Danian dinoflagellate cyst and calcareous nannofossil biostratigraphy was analyzed at the Sur Río Chico borehole, Austral Basin, Argentina. Two stratigraphical intervals from 965 1003 m below ground surface of drilled section were defined. The co-occurrence Manumiella bertodano, M. seelandica conorata in 990–1000 1000–1003 mbgs interval, associated with top Neprolithus fre...

The Mariana forearc system, in the northwestern Pacific, is known as only convergent margin setting with currently active serpentine mud volcanism. Fantangisña serpentinite volcano lies 62 km west of trench, within influence North Equatorial Current (NEC). Cores recovered by International Ocean Discovery Program (IODP) Expedition 366 contain pelagic sediments overlying layered deposits. At bott...

Petrological, geochemical, and biostratigraphical investigations have been conducted on seventy-nine samples from four selected sections in Jordan to understand the factors that influenced enrichment deposition of massive phosphorite deposits. The calcareous nannofossil marker species Broisonia parca constrica Reticulofenestra bisecta, assigned 1 2 (Hawar Al Dhahikiyya), were indicative Campani...

The Cape Roberts Project was successfully completed in the austral spring of 1999 with drilling of the 939.42-m CRP-3 drillhole, located 2-km west of the CRP-2/2A drillhole. The CRP-3 core comprises a 790-m Cenozoic (glacio-) marine sequence separated from underlying Devonian basement rocks by a c. 30-mthick dolerite conglomerate of undetermined age. Here, we present the results of a palaeomagn...

The Late Miocene-Early Pliocene Biogenic Bloom (∼9–3.5 Ma) was a paleoceanographic phenomenon defined by anomalously high accumulations of biological components at multiple open ocean sites, especially in certain regions the Indian, and Pacific oceans. Its temporal spatial extent with available information leaves fundamental questions about driving forces responses unanswered. In this work, we ...

The variations in assemblages of calcareous nannofossils are tracked the Dakhla and Tarawan Formations exposed at Gebel Nezzazat (central Sinai, Egypt). Five nannofossil biozones, namely NP2/3, NP4, NP5, NP6, NP7/8 identified. A distinct marker bed related to Latest Danian Event (LDE) occurs within Fm. earliest representative fasciculiths, Lithoptychius schmitzii, first just below LDE is follow...

Reticulofenestra pseudoumbilicus is a Neogene calcareous nannofossil species whose highest stratigraphic occurrence (Top) reliable biohorizon in the Pliocene, calibrated at 3.82 Ma. The present record from least Middle Miocene, within an interval around Top Sphenolithus heteromorphus, 13.53 Ma, but its lower distribution range not precisely delineated. study of assemblages sediment cores Integr...