Bralower, Timothy J.; Fullagar, Paul D.; McCay, Taylor A.; MacLeod, Kenneth G.; Bergen, James A.; Zapata, Eglee (2004): Strontium isotope stratigraphy of Cretaceous sediments at Sites 1183 and 1186, Ontong Java Plateau. Texas A&M University, Ocean Drilling Program, College Station, TX, United States, In: Fitton, J. Godfrey, Mahoney, John J., Wallace, Paul J., Antretter, Maria J., Banerjee, Neil R., Bergen, James A., Cairns, Graeme, Castillo, Paterno R., Chambers, Lynne M., Chazey, William J., III, Coffin, Millard F., Godard, Marguerite M., Hall, Stuart A., Honnorez, Jose, Ingle, Stephanie P., Kroenke, Loren W., MacLeod, Kenneth G., Naruse, Hajime, Neal, Clive R., Ogg, James G., Riisager, Peter, Sano, Takahashi, Sikora, Paul J., van der Werff, Wietze, White, Rosalind V., Zhao, Xixi, Proceedings of the Ocean Drilling Program; scientific results; basement drilling of the Ontong Java Plateau; covering Leg 192 of the cruises of the drilling vessel JOIDES Resolution; Apra Harbor, Guam, to Apra Harbor, Guam; Sites 1183-1187; 8 September-7 November 2000, 192, georefid:2005-004700

Abstract:
Strontium isotope stratigraphy of the Cretaceous sections recovered in Holes 1183A and 1186A generally matches trends expected from the seawater Sr isotope curve. Combined with biostratigraphic data, the (super 87) Sr/ (super 86) Sr measurements provide a good chronostratigraphic framework for these holes. In the mid-Cretaceous where the seawater Sr isotopic curve changes direction several times, biostratigraphy removes ambiguity in interpreting (super 87) Sr/ (super 86) Sr values. Furthermore, (super 87) Sr/ (super 86) Sr values refine the interpretation of several mid-Cretaceous unconformities suggested by nannofossil biostratigraphy. For the Campanian-Maastrichtian sediments in both holes, ages predicted from Sr isotope stratigraphy are as much as 2.5 m.y. younger than those from nannofossil stratigraphy. This offset likely results from differences in the way that ages are calibrated to nannofossil datums and the seawater Sr isotopic curve. Numerous Sr isotope values are high for their stratigraphic position, suggesting incorporation of excess 87Sr presumably derived from terrigenous clays. Other Sr isotope values suggest minor errors in the estimated ages of nannofossil datums.
Coverage:
West: 157.0100 East: 159.5100 North: -.4100 South: -1.1100
Relations:
Expedition: 192
Site: 192-1183
Site: 192-1186
Supplemental Information:
Available only on CD-ROM in PDF format and on the Web in PDF or HTML; includes appendix
Data access:
Provider: SEDIS Publication Catalogue
Data set link: http://sedis.iodp.org/pub-catalogue/index.php?id=10.2973/odp.proc.sr.192.106.2004 (c.f. for more detailed metadata)
Data download: application/pdf
This metadata in ISO19139 XML format