Annotated record of the detailed examination of Mn deposits from the Mariana Arc area, Pacific Ocean
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PANGAEA
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| Autores principales: | , |
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| Formato: | Dataset Open Access |
| Lenguaje: | en |
| Publicado: |
PANGAEA
1982
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| Acceso en línea: | |
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| _version_ | 1867169120861028352 |
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| author | Fryer, Patricia B Hussong, Donald M |
| author_facet | Fryer, Patricia B Hussong, Donald M |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | A detailed geophysical and geological survey of the Mariana Trough, an actively extensional back-arc basin, was conducted in 1976 and 1977 to provide data for selection of drilling sites for DSDP Leg 60. These surveys revealed large-scale bathymetric trends, sediment distribution, crustal seismic veolocity structure, and earthquake activity that suggest the basin is opening around an axial spreading center tectonically similar to the slowly spreading Mid-Atlantic Ridge. There are, however, significant differences in the character of the trough, such as poorly defined magnetic anomalies, extreme bathymetric relief, and the frequent occurrence of low-magnitude earthquakes but absence of larger seismic events. Seafloor spreading in the Mariana Trough may be characteristic of the initial opening stages of any oceanic rift system, whether or not it is in a back-arc setting. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_876354 |
| institution | PANGAEA |
| language | en |
| publishDate | 1982 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Annotated record of the detailed examination of Mn deposits from the Mariana Arc area, Pacific Ocean Fryer, Patricia B Hussong, Donald M Comment; Deposit type; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Description; Dredge, rock; DRG_R; Event label; Identification; Kana Keoki; KK77; KK770317; KK770317-4 M01; KK770317-4 M05; KK770317-4 M06; KK770317-4 M08; KK770317-4 M09; KK770317-4 M10; KK770317-4 M11; KK770317-4-RD01; KK770317-4-RD05; KK770317-4-RD06; KK770317-4-RD08; KK770317-4-RD09; KK770317-4-RD10; KK770317-4-RD11; KK770317-PC04; KK770317-PC14; KK770317-PC18; KK770317-RD19; KK770317-RD20; KK770317-RD21; KK770317-RD22; KK770317-RD23; KK770317 STA48; KK770317 STA50; KK770317 STA56; KK770317 STA57; KK770317 STA58; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; Pacific Oean; PC; PC18; PCOD14; PCOD 4; Piston corer; Position; Quantity of deposit; Sediment type; Size; Substrate type; Uniform resource locator/link to image; Visual description A detailed geophysical and geological survey of the Mariana Trough, an actively extensional back-arc basin, was conducted in 1976 and 1977 to provide data for selection of drilling sites for DSDP Leg 60. These surveys revealed large-scale bathymetric trends, sediment distribution, crustal seismic veolocity structure, and earthquake activity that suggest the basin is opening around an axial spreading center tectonically similar to the slowly spreading Mid-Atlantic Ridge. There are, however, significant differences in the character of the trough, such as poorly defined magnetic anomalies, extreme bathymetric relief, and the frequent occurrence of low-magnitude earthquakes but absence of larger seismic events. Seafloor spreading in the Mariana Trough may be characteristic of the initial opening stages of any oceanic rift system, whether or not it is in a back-arc setting. |
| title | Annotated record of the detailed examination of Mn deposits from the Mariana Arc area, Pacific Ocean |
| topic | Comment; Deposit type; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Description; Dredge, rock; DRG_R; Event label; Identification; Kana Keoki; KK77; KK770317; KK770317-4 M01; KK770317-4 M05; KK770317-4 M06; KK770317-4 M08; KK770317-4 M09; KK770317-4 M10; KK770317-4 M11; KK770317-4-RD01; KK770317-4-RD05; KK770317-4-RD06; KK770317-4-RD08; KK770317-4-RD09; KK770317-4-RD10; KK770317-4-RD11; KK770317-PC04; KK770317-PC14; KK770317-PC18; KK770317-RD19; KK770317-RD20; KK770317-RD21; KK770317-RD22; KK770317-RD23; KK770317 STA48; KK770317 STA50; KK770317 STA56; KK770317 STA57; KK770317 STA58; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; Pacific Oean; PC; PC18; PCOD14; PCOD 4; Piston corer; Position; Quantity of deposit; Sediment type; Size; Substrate type; Uniform resource locator/link to image; Visual description |
| url | https://doi.org/10.1594/PANGAEA.876354 |