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| Format: | Artículo científico |
| Language: | en |
| Published: |
Universidad Nacional Autónoma de México
2002
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| Online Access: | https://www.redalyc.org/articulo.oa?id=57219312 |
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Table of Contents:
- Paleoceanographic evolution of backwater in the Nazca region, southeastern Pacific, during late Pleistocene Adolfo Molina Cruz Juan Carlos Herguera Ciencias de la Tierra glacial radiolaria Chile Current trade wind field southeastern Pacific The distribution of radiolarian assemblages in the surface sediments of the southeasternPacific reflects the westward advection of the Chile Current away from the coast and its mixing withSubtropical Water. This oceanic process, occurring along the eastern section of the Nazca Ridge(~ 20° S), is influence by the trade wind field, disrupts the Subtropical Convergence and leaves backwaternear the coast. Late Pleistocene glacial-interglacial fluctuations of this ocean circulation arereconstructed using radiolarian assemblages in core H96-Tg7 (17°14.04S, 78°06.16W). Glacialepisodes exhibit more intense ocean circulation than interglacial episodes. Extreme southern incursionsof Subtropical Water occurred during Marine Isotope Stages 11, 5 and 1, suggesting that extremelywarm climate conditions occurred episodically. 2002 artículo científico 1026-8774 https://www.redalyc.org/articulo.oa?id=57219312 en http://www.redalyc.org/revista.oa?id=572 Revista Mexicana de Ciencias Geológicas application/pdf Universidad Nacional Autónoma de México Revista Mexicana de Ciencias Geológicas (México) Num.3 Vol.19