22. MIDDLE CRETACEOUS PLANKTONIC FORAMINIFERS OF THE ANTARCTIC MARGIN:
A planktonic foraminiferal fauna of probable late Aptian age is recorded in Cores 113-693A-47R and-48R, located on the Antarctic continental margin. Moderate to highly productive surface waters and upper bathyal paleodepths are inferred from benthic and planktonic foraminifers, and other biotic and...
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| Language: | English |
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| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.698.3473 http://www-odp.tamu.edu/publications/113_SR/VOLUME/CHAPTERS/sr113_22.pdf |
| Summary: | A planktonic foraminiferal fauna of probable late Aptian age is recorded in Cores 113-693A-47R and-48R, located on the Antarctic continental margin. Moderate to highly productive surface waters and upper bathyal paleodepths are inferred from benthic and planktonic foraminifers, and other biotic and mineral components in the>63 fim size frac-tion. INTRODUCTION AND METHODS 10°E ODP Site 693 lies on a mid-slope bench (2370 m) along the east-ern continental margin of the Weddell Sea (70°49.9'S, 14°34.4'W) (Fig. 1). Five samples from Cores 113-693A-47R and-48R were examined. The samples span a 19 m interval within Unit VII |
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