Kyte, Frank T. (2003): Identification of late Eocene impact deposits at ODP Site 1090

Leg/Site/Hole:
ODP 177
ODP 177 1090
Identifier:
2003-053332
georefid
10.2973/odp.proc.sr.177.110.2001
doi
Creator:
Kyte, Frank T.
University of California at Los Angeles, Center for Astrobiology, Los Angeles, CA, United States
author
Identification:
Identification of late Eocene impact deposits at ODP Site 1090
2003
In: Gersonde, Rainer, Hodell, David A., Blum, Peter, Andersson, Carin, Austin, William E. N., Billups, Katharina, Channell, James E. T., Charles, Christopher D., Diekmann, Bernhard, Filippelli, Gabriel M., Flores, Jose-Abel, Hewitt, Antony T., Howard, William R., Ikehara, Minoru, Janecek, Thomas R., Kanfoush, Sharon L., Kemp, Alan E. S., King, Stagg L., Kleiven, Helga Flesche, Kuhn, Gerhard, Marino, Maria, Ninnemann, Ulysses S., O'Connell, Suzanne, Ortiz, Joseph D., Stoner, Joseph S., Sugiyama, Kazuhiro, Warnke, Detlef A., Zielinski, Ulrich, Proceedings of the Ocean Drilling Program, scientific results; Southern Ocean paleoceanography; covering Leg 177 of the cruises of the drilling vessel JOIDES Resolution; Cape Town, South Africa, to Punta Arenas, Chile; sites 1088-1094; 9 December 1997-5 February 1998
Texas A&M University, Ocean Drilling Program, College Station, TX, United States
177
Anomalous concentrations of Ir have been found in upper Eocene sediments from Ocean Drilling Program (ODP) Hole 1090B. Clear and dark-colored spherules that are believed to be microtektites and clinopyroxene-bearing microkrystites, respectively, were found in the samples with highest Ir. The peak Ir concentration in Sample 177-1090B-30X-5, 105-106 cm (954 pg/g) and the net Ir fluence (14 ng/cm2) at this site are higher that at most other localities except for Caribbean site RC9-58. The Ir anomaly and impact debris are probably correlative with similar deposits found at ODP Site 689 on the Maude Rise and at other localities around the world.
English
Serial
Coverage:Geographic coordinates:
North:-42.5449
West:8.5359East: 8.5359
South:-42.5449
Stratigraphy; Cenozoic; concentration; cores; correlation; Eocene; geochemical anomalies; geochemistry; identification; impacts; iridium; Leg 177; lithostratigraphy; metals; mineral composition; Ocean Drilling Program; ODP Site 1090; Paleogene; platinum group; Southern Ocean; spherules; tektites; Tertiary; upper Eocene;
.