Bartolini, Annachiara (2006): Cretaceous radiolarian biochronology and carbon isotope stratigraphy of ODP Site 1149 (northwestern Pacific, Nadezhda Basin)

Leg/Site/Hole:
ODP 185
ODP 185 1149
Identifier:
2006-060883
georefid
10.2973/odp.proc.sr.185.011.2003
doi
Creator:
Bartolini, Annachiara
Universite de Lausanne, Institut de Geologie et Paleontologie, Lausanne, Switzerland
author
Identification:
Cretaceous radiolarian biochronology and carbon isotope stratigraphy of ODP Site 1149 (northwestern Pacific, Nadezhda Basin)
2006
In: Ludden, John N. (editor), Plank, Terry (editor), Escutia, Carlota (editor), Abrams, Lewis J., Alt, Jeffrey C., Armstrong, Robin N., Barr, Samantha, Bartolini, Annachiara, Cairns, Graeme, Fisk, Martin R., Guerin, Gilles, Haveman, Shelley A., Hirono, Tetsuro, Honnorez, Jose, Kelley, Katherine A., Larson, Roger L., Lozar, Francesca M., Murray, Richard W., Pletsch, Thomas K., Pockalny, Robert A., Rouxel, Olivier, Schmidt, Angelika, Smith, David C., Spivack, Arthur J., Staudigel, Hubert, Steiner, Maureen B., Valentine, Robert B., Proceedings of the Ocean Drilling Program; scientific results, Izu-Mariana Margin; covering Leg 185 of the drilling vessel JOIDES Resolution; Hong Kong, People's Republic of China, to Yokohama, Japan; Sites 801 and 1149; 12 April-14 June 1999
Texas A&M University, Ocean Drilling Program, College Station, TX, United States
185
In the Nadezhda Basin (northwestern Pacific), the contact between oceanic crust basalt and its sedimentary cover was recovered at Site 1149 during Leg 185. The bottom sedimentary section (Unit IV) is characterized by interbedded radiolarian chert and radiolarian nannofossil chalk/marl. This peculiar lithology for the western Pacific has allowed an approach of integrated stratigraphy between radiolarians and carbon isotope data. The upper Valanginian delta (super 13) C positive excursion, correlatable to magnetic Chron M11, was individuated. Biochemostratigraphy constrains the calibration of the positive magnetic lineation at Site 1149 as Chron M12r. Moreover, these data confirm the upper Valanginian delta 13C positive excursion as a global event, probably linked to high primary productivity.
English
Serial
Coverage:Geographic coordinates:
North:31.2030
West:143.2100East: 143.2100
South:31.2030
Stratigraphy; bedding; biostratigraphy; biozones; C-13/C-12; carbon; chemostratigraphy; Cretaceous; Invertebrata; isotope ratios; isotopes; Leg 185; Lower Cretaceous; Mesozoic; microfossils; Nadezhda Basin; North Pacific; Northwest Pacific; Ocean Drilling Program; ODP Site 1149; Pacific Ocean; planar bedding structures; Protista; Radiolaria; sedimentary structures; species diversity; stable isotopes; Valanginian; West Pacific;
.