Mid-Piacenzian sea surface temperature record from ODP Site 1115 in the western equatorial Pacific
Stratigraphy
By: Danielle Stoll
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Abstract
Planktic foraminifer assemblages and alkenone unsaturation ratios have been analyzed for the mid-Piacen-zian (3.3 to 2.9 Ma) section of Ocean Drilling Program (ODP) Site 1115B, located in the western equatorial Pacific off the coast of New Guinea. Cold and warm season sea surface temperature (SST) estimates were determined using a modern analog technique. ODP Site 1115 is located just south of the transition between the planktic foraminifer tropical and subtropical faunal provinces and approximates the southern boundary of the western equatorial Pacific (WEP) warm pool. Comparison of the faunal and alkenone SST estimates (presented here) with an existing nannofossil climate proxy shows similar trends. Results of this analysis show increased seasonal variability during the middle of the sampled section (3.22 to 3.10 Ma), suggesting a possible northward migration of both the subtropical faunal province and the southern boundary of the WEP warm pool.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Mid-Piacenzian sea surface temperature record from ODP Site 1115 in the western equatorial Pacific |
| Series title | Stratigraphy |
| Volume | 7 |
| Issue | 1 |
| Year Published | 2010 |
| Language | English |
| Publisher | Micropaleontology Press |
| Publisher location | Flushing, NY |
| Contributing office(s) | Eastern Geology and Paleoclimate Science Center |
| Description | 6 p. |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Stratigraphy |
| First page | 1 |
| Last page | 6 |
| Additional Online Files (Y/N) | N |
| Google Analytic Metrics | Metrics page |