(Table T1) Lithology, structure and significant components of sediments from ODP Holes 173-1068A and 173-1069A
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| Natura: | Dataset Open Access |
| Lingua: | en |
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PANGAEA
2001
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| _version_ | 1867171586290745344 |
|---|---|
| author | Wallrabe-Adams, Hans-Joachim |
| author_facet | Wallrabe-Adams, Hans-Joachim |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Thin sections of samples were studied from (syn-?) postrift sediments of the Iberia Abyssal Plain (Ocean Drilling Program Leg 173, Sites 1068 and 1069). They show that, at these sites, Lower Cretaceous calcareous chalks and calcareous mass-flow deposits are overlain by sub-calcite compensation depth pelagic claystones of Late Cretaceous to early Tertiary age. At both sites, turbidites and current-controlled sequences are intercalated with pelagic claystones and show similar variations: (1) the proportion of turbidites to pelagic clay varies systematically and (2) turbidite composition changes from relatively coarse-grained and calcareous to predominantly fine-grained siliciclastic. This facies transition occurs around the Paleocene/Eocene boundary. In addition, turbidites at the Cretaceous/Tertiary and the Paleocene/Eocene boundaries contain resedimented glauconite, and, occasionally, some pyrite. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_787794 |
| institution | PANGAEA |
| language | en |
| publishDate | 2001 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | (Table T1) Lithology, structure and significant components of sediments from ODP Holes 173-1068A and 173-1069A Wallrabe-Adams, Hans-Joachim 173-1068A; 173-1069A; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Elevation of event; Epoch; Event label; Glauconite; Joides Resolution; Latitude of event; Leg173; Lithology/composition/facies; Longitude of event; Minerals; North Atlantic Ocean; Ocean Drilling Program; ODP; Sample code/label; Sample comment; Structure Thin sections of samples were studied from (syn-?) postrift sediments of the Iberia Abyssal Plain (Ocean Drilling Program Leg 173, Sites 1068 and 1069). They show that, at these sites, Lower Cretaceous calcareous chalks and calcareous mass-flow deposits are overlain by sub-calcite compensation depth pelagic claystones of Late Cretaceous to early Tertiary age. At both sites, turbidites and current-controlled sequences are intercalated with pelagic claystones and show similar variations: (1) the proportion of turbidites to pelagic clay varies systematically and (2) turbidite composition changes from relatively coarse-grained and calcareous to predominantly fine-grained siliciclastic. This facies transition occurs around the Paleocene/Eocene boundary. In addition, turbidites at the Cretaceous/Tertiary and the Paleocene/Eocene boundaries contain resedimented glauconite, and, occasionally, some pyrite. |
| title | (Table T1) Lithology, structure and significant components of sediments from ODP Holes 173-1068A and 173-1069A |
| topic | 173-1068A; 173-1069A; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Elevation of event; Epoch; Event label; Glauconite; Joides Resolution; Latitude of event; Leg173; Lithology/composition/facies; Longitude of event; Minerals; North Atlantic Ocean; Ocean Drilling Program; ODP; Sample code/label; Sample comment; Structure |
| url | https://doi.org/10.1594/PANGAEA.787794 |