Processing results from drill hole VNIIO-1985-Arct-01, Arcticheskaya, Kurentsovskaya Area; No, 82, North Kildinskaya Area (Progress Report 6447)
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| Format: | Dataset Open Access |
| Language: | en |
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PANGAEA
1990
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| _version_ | 1867169497036619776 |
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| author | Komarnitsky, Valery M Evsyukov, Vladimir G Ustinov, Nikolaj V |
| author_facet | Komarnitsky, Valery M Evsyukov, Vladimir G Ustinov, Nikolaj V |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Project: 2/89-91 - Generalization of Results Obtained from Parametric and Important Survey Holes Drilled on the Shelf of the Barents and Kara Seas. The hole was drilled within the Arcticheskaya (Arctic) Area in the southern part of the Barents Sea near the center of the Southern tectonic depression. Reasons for drilling: 1. Specification of the geological structure of the area and obtaining data for stratification of the geological section and its allocation with reflecting seismic horizons; 2. Study of properties, composition and lithologic-facial features of sedimentary rocks; 3. Study of stratal waters. Technical results: The hole was drilled from the D/S Valentin Shashin. Drilling was finished on 25.02.1989. It has penetrated the section up to 4524 m and stopped in Middle Triassic deposits. 786 samples have been collected. Scientific results: 1. Within the studied geological section a detailed (series, stages, strata, bands) lithologic and stratigraphic sequence of sedimentary rocks (based on microfauna, spora and pollen spectra, bivalve mollusks, and lithologic composition) from Middle Triassic to Quaternary deposits has been carried out. 2. Thicknesses of the units are as followed: Middle Triassic - 169 m, Late Triassic - 789 m, Early Jurassic - 536 m, Middle Jurassic - 481 (Aalenian-Bathonian - 381 m, Callovian - 100 m), Late Jurassic - 274 m (Oxfordian - 84 m, Kimmeridgian - 104 m, Tithonian - 86 m), Early Cretaceous - 1470 m (Berriasian? - Valanginian-Hauterivian - 355 m, Barremian - 125 m, Aptian - 605 m, Albian - 385 m), Early-Late Cretaceous (Albian-Cenomanian) - 270 m, Late Cretaceous - 36 m, Paleogene - 88 m, Neogene-Quaternary - 412 m. 3. The Middle Triassic to Late Triassic and the Middle Jurassic to Early Cretaceous rocks mainly comprise claystones (sometimes with admixture of coarser material) with sandstone bands. In the Late Albian layers of black clays occur. The Early Jurassic series is composed of sandstones (sometimes with admixture of silty and clayey material. 4. Geological structures in the Kurentsov, North Kildin and Arctic areas are similar due to belonging them to the South Barents tectonic depression. Thicknesses of Jurassic-Cretaceous deposits in these areas are comparable. 5. Tectonic development of the southern Barents Sea from the Late Triassic to the Cretaceous was characterized by steady downwarping from the Early Jurassic to the Early Neocomian. The structures were developed consedimentary and mainly formed during the Early Neocomian. Their final formation was during the pre-Pliocene, when formation of the structure and general uplift of the region took place. 6. Combination of lithologic and stratigraphic results from the holes drilled within the Kurentsov, Murmansk, North Kildin and Arctic areas with materials of seismic prospecting indicate sharp increase in thickness and pelagicity of the Induan stage in direction from Russian and Pechora plates (0-200 m) to the shelf (up to 800-1000 m within the Kurentsov and Murmansk areas), and then 1500 m and more within the Kildin area and, probably, more than 3-4 km in the central part of the South Barents tectonic depression (Arctic area). |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_690557 |
| institution | PANGAEA |
| language | en |
| publishDate | 1990 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Processing results from drill hole VNIIO-1985-Arct-01, Arcticheskaya, Kurentsovskaya Area; No, 82, North Kildinskaya Area (Progress Report 6447) Komarnitsky, Valery M Evsyukov, Vladimir G Ustinov, Nikolaj V Archive of Ocean Data; ARCOD; Barents Sea; DRILL; Drilling/drill rig; VNIIO-1985; VNIIO-1985-Arct-01 Project: 2/89-91 - Generalization of Results Obtained from Parametric and Important Survey Holes Drilled on the Shelf of the Barents and Kara Seas. The hole was drilled within the Arcticheskaya (Arctic) Area in the southern part of the Barents Sea near the center of the Southern tectonic depression. Reasons for drilling: 1. Specification of the geological structure of the area and obtaining data for stratification of the geological section and its allocation with reflecting seismic horizons; 2. Study of properties, composition and lithologic-facial features of sedimentary rocks; 3. Study of stratal waters. Technical results: The hole was drilled from the D/S Valentin Shashin. Drilling was finished on 25.02.1989. It has penetrated the section up to 4524 m and stopped in Middle Triassic deposits. 786 samples have been collected. Scientific results: 1. Within the studied geological section a detailed (series, stages, strata, bands) lithologic and stratigraphic sequence of sedimentary rocks (based on microfauna, spora and pollen spectra, bivalve mollusks, and lithologic composition) from Middle Triassic to Quaternary deposits has been carried out. 2. Thicknesses of the units are as followed: Middle Triassic - 169 m, Late Triassic - 789 m, Early Jurassic - 536 m, Middle Jurassic - 481 (Aalenian-Bathonian - 381 m, Callovian - 100 m), Late Jurassic - 274 m (Oxfordian - 84 m, Kimmeridgian - 104 m, Tithonian - 86 m), Early Cretaceous - 1470 m (Berriasian? - Valanginian-Hauterivian - 355 m, Barremian - 125 m, Aptian - 605 m, Albian - 385 m), Early-Late Cretaceous (Albian-Cenomanian) - 270 m, Late Cretaceous - 36 m, Paleogene - 88 m, Neogene-Quaternary - 412 m. 3. The Middle Triassic to Late Triassic and the Middle Jurassic to Early Cretaceous rocks mainly comprise claystones (sometimes with admixture of coarser material) with sandstone bands. In the Late Albian layers of black clays occur. The Early Jurassic series is composed of sandstones (sometimes with admixture of silty and clayey material. 4. Geological structures in the Kurentsov, North Kildin and Arctic areas are similar due to belonging them to the South Barents tectonic depression. Thicknesses of Jurassic-Cretaceous deposits in these areas are comparable. 5. Tectonic development of the southern Barents Sea from the Late Triassic to the Cretaceous was characterized by steady downwarping from the Early Jurassic to the Early Neocomian. The structures were developed consedimentary and mainly formed during the Early Neocomian. Their final formation was during the pre-Pliocene, when formation of the structure and general uplift of the region took place. 6. Combination of lithologic and stratigraphic results from the holes drilled within the Kurentsov, Murmansk, North Kildin and Arctic areas with materials of seismic prospecting indicate sharp increase in thickness and pelagicity of the Induan stage in direction from Russian and Pechora plates (0-200 m) to the shelf (up to 800-1000 m within the Kurentsov and Murmansk areas), and then 1500 m and more within the Kildin area and, probably, more than 3-4 km in the central part of the South Barents tectonic depression (Arctic area). |
| title | Processing results from drill hole VNIIO-1985-Arct-01, Arcticheskaya, Kurentsovskaya Area; No, 82, North Kildinskaya Area (Progress Report 6447) |
| topic | Archive of Ocean Data; ARCOD; Barents Sea; DRILL; Drilling/drill rig; VNIIO-1985; VNIIO-1985-Arct-01 |
| url | https://doi.org/10.1594/PANGAEA.690557 |