High resolution records of the Elmo event from Shatsky Rise, IODP Sites 1209 & 1211

Author(s): Murphy, B. H.; Zachos, J. C.; McCarren, H. K.; Thomas, E.; Roehl, U.
Author Affiliation(s): Primary:
University of California Santa Cruz, Earth and Planetary Sciences Department, Santa Cruz, CA, United States
Other:
Yale University, United States
Bremen University, Federal Republic of Germany
Volume Title: AGU 2006 fall meeting
Source: Eos, Transactions, American Geophysical Union, 87( Fall Meeting Suppl.); American Geophysical Union 2006 fall meeting, San Francisco, CA, Dec. 11-15, 2006. Publisher: American Geophysical Union, Washington, DC, United States. ISSN: 0096-3941 CODEN: EOSTAJ
Note: In English
Summary: The hyperthermal events of the early Eocene are exceptional analogues for the study of the causes and consequences of global warming. Study of the Paleocene Eocene Thermal Maximum (PETM) event continues to contribute valuable information about dynamics of earth systems in response to rapid carbon input and an abrupt warming. In particular, acidification of the deep sea may have triggered the extinction of calcifying benthic foraminifera. However, the acidification also dissolved carbonate sediments; thus the onset of the PETM is truncated in marine records constructed to date. The development of high-resolution records of similar events is crucial to understanding the complete evolution and dynamics of hyperthermal perturbations to Earth systems. Here we present such a record; percent course fraction, carbonate content, and stable isotope data from benthic foraminifera and bulk sediments from Shatsky Rise, IODP sites 1209 and 1211, which show the smaller ELMO event in its entirety. This record, from the eastern equatorial Pacific, contributes to the ongoing development of globally distributed high-resolution records of global warming events.
Year of Publication: 2006
Research Program: ODP Ocean Drilling Program
Key Words: 12 Stratigraphy, Historical Geology and Paleoecology; Cenozoic; Deep-sea environment; Elmo event; Eocene; Extinction; Foraminifera; High-resolution methods; Invertebrata; Leg 198; Lower Eocene; Marine environment; Microfossils; North Pacific; Northwest Pacific; ODP Site 1209; ODP Site 1211; Ocean Drilling Program; Pacific Ocean; Paleocene; Paleocene-Eocene Thermal Maximum; Paleoclimatology; Paleoecology; Paleogene; Paleotemperature; Protista; Shatsky Rise; Stratigraphic boundary; Tertiary; Upper Paleocene; West Pacific
Coordinates: N323900 N324000 E1583100 E1583000
N320000 N320000 E1575100 E1575100
Record ID: 2007070763
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