Averages and ranges of paleoenvironmental proxy records of ODP Hole 108-658C (Table 1)
Citation
Zhao M, Eglinton G, Haslett S K, Jordan R W, Sarnthein M, Zhang Z (2000). Averages and ranges of paleoenvironmental proxy records of ODP Hole 108-658C (Table 1). PANGAEA - Data Publisher for Earth & Environmental Science. Occurrence dataset https://doi.org/10.1594/pangaea.757616 accessed via GBIF.org on 2024-09-01.Description
Several high-resolution proxy environmental records have been obtained for the last 35 kyr from ODP Hole 658C, a well-studied site ca. 200 km off Cap Blanc, NW Africa. The collective assessment based on the marine proxies (UK'37 SST, contents of TOC and chlorins, Upwelling Radiolarian Index and the percentage of Florisphaera profunda), surprisingly indicates that the last glacial maximum (LGM) was characterized by warmer sea surface temperature (SST), weaker upwelling, and lower marine productivity, compared with the preceding older glacial and subsequent deglaciation periods. Of the terrigenous proxies, the mean grain size of the non-carbonate fraction and the terrigenous alkane content indicate that wind strength and aridity were high. The weaker upwelling at the 658 site during the LGM may have resulted from changes in the strength and direction of the wind systems and/or shifts in the position and geometry of the upwelling cell.Taxonomic Coverages
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Chromistarank: kingdom
- rank: kingdom
Geographic Coverages
Event: 108-658C,
Canarias Sea
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Bibliographic Citations
Contacts
Meixun Zhaooriginator
Geoffrey Eglinton
originator
Simon K Haslett
originator
Richard William Jordan
originator
Michael Sarnthein
originator
Zhaohui Zhang
originator
metadata author
PANGAEA - Data Publisher for Earth & Environmental Science
email: info@pangaea.de
homepage: https://www.pangaea.de
Frank-Oliver Glöckner
administrative point of contact
Robert Huber
administrative point of contact