Neogene evolution of surface marine climate in the Pacific and notes on related events
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| Natura: | Artículo científico |
| Lingua: | en |
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Universidad Nacional Autónoma de México
2002
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| _version_ | 1876424045205913600 |
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| author | Ryuichi Tsuchi |
| author_facet | Ryuichi Tsuchi |
| contents | Neogene evolution of surface marine climate in the Pacific and notes on related events Ryuichi Tsuchi Ciencias de la Tierra Neogene marine climate accelerated evolution Pacific Ocean gateways Pacific Neogene events related to the evolution of the Neogene surface marine climate on thePacific coast of central Japan and on the Pacific coast of central and northern South America arereviewed from a standpoint of future studies. The evolution of surface marine climate is presentedhere by utilizing variations in the ratio of warm water planktonic foraminifera to the total assemblagein respective horizons of reference sections. During the Neogene, three warm episodes in Japanat about 15.5 Ma, 5.7 Ma, and 3 Ma, and three warm episodes in South America at about 15.5Ma, 11.5 Ma, and 5.7 Ma, respectively, are recognized. In addition, a prolonged cool episode is noticedin about 15-12 Ma on both sides of the Pacific Ocean. Revised chronological calibrations aremade on accelerated lineage biotic evolutions in accordance with a stepwise decline of surface seawatertemperature that occurred during the latest Neogene in central Japan and northern Chile,both in middle latitudes. 2002 artículo científico 1026-8774 https://www.redalyc.org/articulo.oa?id=57219313 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 |
| format | Artículo científico |
| id | redalyc_57219313 |
| institution | Redalyc |
| language | en |
| publishDate | 2002 |
| publisher | Universidad Nacional Autónoma de México |
| spellingShingle | Neogene evolution of surface marine climate in the Pacific and notes on related events Ryuichi Tsuchi Ciencias de la Tierra Neogene marine climate accelerated evolution Pacific Ocean gateways Neogene evolution of surface marine climate in the Pacific and notes on related events Ryuichi Tsuchi Ciencias de la Tierra Neogene marine climate accelerated evolution Pacific Ocean gateways Pacific Neogene events related to the evolution of the Neogene surface marine climate on thePacific coast of central Japan and on the Pacific coast of central and northern South America arereviewed from a standpoint of future studies. The evolution of surface marine climate is presentedhere by utilizing variations in the ratio of warm water planktonic foraminifera to the total assemblagein respective horizons of reference sections. During the Neogene, three warm episodes in Japanat about 15.5 Ma, 5.7 Ma, and 3 Ma, and three warm episodes in South America at about 15.5Ma, 11.5 Ma, and 5.7 Ma, respectively, are recognized. In addition, a prolonged cool episode is noticedin about 15-12 Ma on both sides of the Pacific Ocean. Revised chronological calibrations aremade on accelerated lineage biotic evolutions in accordance with a stepwise decline of surface seawatertemperature that occurred during the latest Neogene in central Japan and northern Chile,both in middle latitudes. 2002 artículo científico 1026-8774 https://www.redalyc.org/articulo.oa?id=57219313 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 |
| title | Neogene evolution of surface marine climate in the Pacific and notes on related events |
| topic | Ciencias de la Tierra Neogene marine climate accelerated evolution Pacific Ocean gateways |
| url | https://www.redalyc.org/articulo.oa?id=57219313 |