Cannariato, Kevin G; Kennett, James P; Behl, Richard J (1999): Benthic foraminiferal assemblage changes during interstadial 4 to 8 in ODP Site 146-893A, Santa Barbara Basin [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.713004, Supplement to: Cannariato, KG et al. (1999): Biotic response to late Quaternary rapid climate switches in Santa Barbara Basin: Ecological and evolutionary implications. Geology, 27(1), 63-66, https://doi.org/10.1130/0091-7613(1999)027%3C0063:BRTLQR%3E2.3.CO;2
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Abstract:
Benthic foraminiferal assemblages from Santa Barbara Basin exhibit major faunal and ecological switches associated with late Quaternary millennial- to decadal-scale global climate oscillations. Repeated turnovers of entire faunas occurred rapidly (<40-400 yr) without extinction or speciation in conjunction with Dansgaard-Oeschger shifts in thermohaline circulation, ventilation, and climate, confirming evolutionary model predictions of Roy et al. Consistent faunal successions of dysoxic taxa during successive interstadials reflect the extreme sensitivity and adaptation of the benthic ecosystem to the rapid environmental changes that marked the late Quaternary and possibly other transitional intervals in the history of the Earth's ocean-atmosphere-cryosphere system. These data support the hypothesis that broad segments of the biosphere are well adapted to rapid climate change.
Other version:
Benthic foraminiferal assemblage changes in ODP Site 146-893A [dataset]. ftp://rock.geosociety.org/pub/reposit/1999/9908.pdf
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Latitude: 34.287500 * Longitude: -120.036000
Date/Time Start: 1992-11-20T10:30:00 * Date/Time End: 1992-11-20T23:40:00
Minimum Elevation: -588.0 m * Maximum Elevation: -588.0 m
Event(s):
146-893A * Latitude: 34.287500 * Longitude: -120.036000 * Date/Time Start: 1992-11-20T10:30:00 * Date/Time End: 1992-11-20T23:40:00 * Elevation: -588.0 m * Penetration: 196.5 m * Recovery: 204.91 m * Location: North Pacific Ocean * Campaign: Leg146 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 21 core; 196.5 m cored; 0 m drilled; 104.3 % recovery
Comment:
The most dominant benthic foraminiferal taxa and species within the assemblages are as followed:
Dysoxic (O2 = 0.1-0.3 ml/l) - Bolivina tumida, Buliminella tenuata, Globobulimina auriculata
Suboxic (O2 = 0.3-1.5 ml/l) - Uvigerina, Oridorsalis, Cassidulina, Nonionella
Oxic (O2 > 1.5 ml/l) - Epistominella pacifica, Nonionellina labradorica, Rutherfordoides rotundata
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | AGE | Age | ka BP | Geocode | ||
| 2 | Sample code/label | Sample label | Cannariato, Kevin G | DSDP/ODP/IODP sample designation | ||
| 3 | Foraminifera, benthic | Foram benth | % | Cannariato, Kevin G | Dysoxic | |
| 4 | Foraminifera, benthic | Foram benth | % | Cannariato, Kevin G | Suboxic | |
| 5 | Foraminifera, benthic | Foram benth | % | Cannariato, Kevin G | Oxic |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
3136 data points
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