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| Main Authors: | , |
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| Format: | Dataset Open Access |
| Language: | en |
| Published: |
PANGAEA
1991
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| Subjects: | |
| Online Access: | https://doi.org/10.1594/PANGAEA.728529 |
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| _version_ | 1867167662132428800 |
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| author | Droser, M L Bottjer, D J |
| author_facet | Droser, M L Bottjer, D J |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Trace fossils and ichnofabric were examined from cores of Late Cretaceous to Quaternary age recovered from the Kerguelen Plateau, Indian Ocean. Nearly all of the strata are completely bioturbated, with ichnofabric index 6 most commonly recorded. Preserved discrete trace fossils include Chondrites, Planolites, Zoophycos, and Thalassinoides. A continuous Cretaceous/Tertiary boundary section preserved at ODP Site 738 occurs within a 15-cm-thick interval of laminated sediments. The lack of bioturbation indicates the disappearance of bioturbating organisms from the seafloor, possibly as a result of the same factors that caused the mass extinction or changes in other environmental conditions - most probably, bottom-water oxygen concentrations. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_728529 |
| institution | PANGAEA |
| language | en |
| publishDate | 1991 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Distribution of trace fossils and ichnofabric indices in ODP holes of Leg 119 Droser, M L Bottjer, D J 119-737B; 119-738C; DRILL; Drilling/drill rig; Indian Ocean; Joides Resolution; Leg119; Ocean Drilling Program; ODP Trace fossils and ichnofabric were examined from cores of Late Cretaceous to Quaternary age recovered from the Kerguelen Plateau, Indian Ocean. Nearly all of the strata are completely bioturbated, with ichnofabric index 6 most commonly recorded. Preserved discrete trace fossils include Chondrites, Planolites, Zoophycos, and Thalassinoides. A continuous Cretaceous/Tertiary boundary section preserved at ODP Site 738 occurs within a 15-cm-thick interval of laminated sediments. The lack of bioturbation indicates the disappearance of bioturbating organisms from the seafloor, possibly as a result of the same factors that caused the mass extinction or changes in other environmental conditions - most probably, bottom-water oxygen concentrations. |
| title | Distribution of trace fossils and ichnofabric indices in ODP holes of Leg 119 |
| topic | 119-737B; 119-738C; DRILL; Drilling/drill rig; Indian Ocean; Joides Resolution; Leg119; Ocean Drilling Program; ODP |
| url | https://doi.org/10.1594/PANGAEA.728529 |