| Abstract: | Sediments from three gravity cores from an east-west shelf-to-slope transect along the axis of Pervenets Canyon in the northern Navarin basin, Bering Sea were analyzed for diatoms. The diatom floras present in the cores were divided into four assemblages. The Bering Basin (deep water open ocean) and Sea Ice (ice cover at least six months per year) Assemblages were dominant in each core. The taxa that comprise the Bering Shelf Assemblage (continental shelf) indicate that downslope transport plays only a minor part in the development of the thanatocenoses. The presence (up to 10% of the total valve count) of the Productivity Assemblage, which consists mainly of poorly silicified, easily dissolved taxa, indicates that nutrient flux is relatively high in the region. Several taxa can be used as proxy indicators for specific water masses. The relative downcore abundance of these taxa was used to approximate the Pleistocene-Holocene boundary (recognized in Core 80-65 at a depth of about 75 cm). -from Author |
| Genre: | Article |
| ProdID: | 70017895 |
| Citation Author: | Starratt, S. W. |
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| Citation End Page: | 170 |
| Citation Issue: | 1 |
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| Citation Language: | English |
| Citation Larger Work Title: | Diatom Research |
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| Citation Number Of Pages: | 12 |
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| Citation Search Results Text: | Late Quaternary paleoceanography of the Pervenets Canyon area of the Bering Sea: evidence from the diatom flora; 1993; Article; Journal; Diatom Research; Starratt, S. W. |
| Citation Start Page: | 159 |
| Citation Volume: | 8 |
| Citation Year: | 1993 |
| Type: | citation/reference |
| Text: | Late Quaternary paleoceanography of the Pervenets Canyon area of the Bering Sea: evidence from the diatom flora; 1993; Article; Journal; Diatom Research; Starratt, S. W. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Fri, 1 Jan 1993 00:00 -0600 |
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