Tedford, R. A.; Kelly, D. C. (2004): A deep-sea record of the late Miocene carbon shift from the southern Tasman Sea. American Geophysical Union, Washington, DC, United States, In: Exon, Neville F. (editor), Kennett, James P. (editor), Malone, Mitchell (editor), The Cenozoic Southern Ocean; tectonics, sedimentation, and climate change between Australia and Antarctica, 151, 273-290, georefid:2005-035035

Abstract:
Changes in carbonate sedimentation and planktonic foraminiferal preservation during the late Miocene carbon shift (LMCS) are assessed using a relatively complete upper Miocene to lowe Pliocene section recovered from Ocean Drilling Program (ODP) Site 1172 in the southern Tasman Sea. Parallel stable isotope records were generated using size-specific, depth-stratified planktonic and benthic foraminifera. All three of the foraminiferal delta (super 13) C stratigraphies record the isotopic decrease that marks the LMCS. The onset of the LMCS coincides with upper magnetochron C2n.2n within planktonic foraminiferal zone SN10. Pulses of carbonate dissolution punctuate the LMCS at other subantarctic sites, indicating that the dissolution spike at Site 1172 reflects a regional change to Southern Ocean circulation/chemistry. The LMCS marks when deepsea delta (super 13) C records of more modern aspect first appeared in the geologic record, and may signify a new steady state in ocean carbonate chemistry. (mod. journ. abst.)
Coverage:
West: 149.5500 East: 149.5600 North: -43.5700 South: -43.5800
Relations:
Expedition: 189
Site: 189-1172
Data access:
Provider: SEDIS Publication Catalogue
Data set link: http://sedis.iodp.org/pub-catalogue/index.php?id=2005-035035 (c.f. for more detailed metadata)
This metadata in ISO19139 XML format