Clay mineralogy of carbonate-rich sediments of ODP Leg 101 sites
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| Formato: | Dataset Open Access |
| Lenguaje: | en |
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PANGAEA
1988
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| _version_ | 1867169501244555264 |
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| author | Füchtbauer, Hans |
| author_facet | Füchtbauer, Hans |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | The insoluble residues of samples from ODP Sites 626 and 627 can be subdivided into four groups: (1) illite, 7 A minerals, quartz and feldspar; (2) smectite and zeolite (clinoptilolite); (3) palygorskite and in places sepiolite; and (4) glauconite and pyrite. Whereas group 1 is clearly terrigenous and group 4 authigenic, group 2 is most probably authigenic, as indicated by its abundance in samples with small insoluble residues and its appearance in SEM photographs. Group 3 is authigenic in Albian peritidal dolomite and possibly terrigenous in middle Miocene slumps and debris flows. Smectite crystallinity increases with age. This increase, however, is less pronounced in the Bahamian carbonate-rich samples than in the carbonate-poor silts south of Guatemala (DSDP Leg 84, Sites 569 and 570, the only comparable investigation) as far as can be judged from such a small number of samples. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_742945 |
| institution | PANGAEA |
| language | en |
| publishDate | 1988 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Clay mineralogy of carbonate-rich sediments of ODP Leg 101 sites Füchtbauer, Hans 101-626B; 101-626C; 101-627A; 101-627B; DRILL; Drilling/drill rig; Joides Resolution; Leg101; North Atlantic Ocean; Ocean Drilling Program; ODP The insoluble residues of samples from ODP Sites 626 and 627 can be subdivided into four groups: (1) illite, 7 A minerals, quartz and feldspar; (2) smectite and zeolite (clinoptilolite); (3) palygorskite and in places sepiolite; and (4) glauconite and pyrite. Whereas group 1 is clearly terrigenous and group 4 authigenic, group 2 is most probably authigenic, as indicated by its abundance in samples with small insoluble residues and its appearance in SEM photographs. Group 3 is authigenic in Albian peritidal dolomite and possibly terrigenous in middle Miocene slumps and debris flows. Smectite crystallinity increases with age. This increase, however, is less pronounced in the Bahamian carbonate-rich samples than in the carbonate-poor silts south of Guatemala (DSDP Leg 84, Sites 569 and 570, the only comparable investigation) as far as can be judged from such a small number of samples. |
| title | Clay mineralogy of carbonate-rich sediments of ODP Leg 101 sites |
| topic | 101-626B; 101-626C; 101-627A; 101-627B; DRILL; Drilling/drill rig; Joides Resolution; Leg101; North Atlantic Ocean; Ocean Drilling Program; ODP |
| url | https://doi.org/10.1594/PANGAEA.742945 |