Stable oxygen isotope record and abundances of Globorotalia menardii in sediments from the tropical Atlantic Ocean
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| Main Authors: | , , , |
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| Format: | Dataset Open Access |
| Language: | en |
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PANGAEA
1985
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| _version_ | 1867171359004557312 |
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| author | Berger, Wolfgang H Killingley, John S Metzler, C V Vincent, Edith |
| author_facet | Berger, Wolfgang H Killingley, John S Metzler, C V Vincent, Edith |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Eight box cores from the tropical Atlantic were studied in detail with regard to foraminiferal oxygen isotopes, radiocarbon, and Globorotalia menardii abundance. A standard Atlantic oxygen-isotope signal was reconstructed for the last 20,000 yr. It is quite similar to the west-equatorial Pacific signal published previously. Deglaciation is seen to occur in two steps which are separated by a pause. Onset of deglaciation is after 15,000 yr B.P. The pause is centered between 11,000 and 12,000 yr B.P., but may be correlative with the Younger Dryas (10,500 yr B.P.) if allowance is made for a scale shift due to mixing processes on the sea floor. Step 2 is centered near 10,000 yr B.P. and is followed by a brief excursion toward light oxygen values. This excursion (the M event) may correlate with the Gulf of Mexico meltwater spike. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_734057 |
| institution | PANGAEA |
| language | en |
| publishDate | 1985 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Stable oxygen isotope record and abundances of Globorotalia menardii in sediments from the tropical Atlantic Ocean Berger, Wolfgang H Killingley, John S Metzler, C V Vincent, Edith BC; Box corer; INMD; INMD-097BX; INMD-101BX; INMD-104BX; INMD-109BX; INMD-110BX; INMD-111BX; INMD-113BX; INMD-115BX; Melville Eight box cores from the tropical Atlantic were studied in detail with regard to foraminiferal oxygen isotopes, radiocarbon, and Globorotalia menardii abundance. A standard Atlantic oxygen-isotope signal was reconstructed for the last 20,000 yr. It is quite similar to the west-equatorial Pacific signal published previously. Deglaciation is seen to occur in two steps which are separated by a pause. Onset of deglaciation is after 15,000 yr B.P. The pause is centered between 11,000 and 12,000 yr B.P., but may be correlative with the Younger Dryas (10,500 yr B.P.) if allowance is made for a scale shift due to mixing processes on the sea floor. Step 2 is centered near 10,000 yr B.P. and is followed by a brief excursion toward light oxygen values. This excursion (the M event) may correlate with the Gulf of Mexico meltwater spike. |
| title | Stable oxygen isotope record and abundances of Globorotalia menardii in sediments from the tropical Atlantic Ocean |
| topic | BC; Box corer; INMD; INMD-097BX; INMD-101BX; INMD-104BX; INMD-109BX; INMD-110BX; INMD-111BX; INMD-113BX; INMD-115BX; Melville |
| url | https://doi.org/10.1594/PANGAEA.734057 |