40Ar-39Ar geochronological studies on rocks at DSDP Leg 58 Holes
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| Autores principales: | , , |
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| Formato: | Dataset Open Access |
| Lenguaje: | en |
| Publicado: |
PANGAEA
1980
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| _version_ | 1867167671007576064 |
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| author | Ozima, Minoru Takigami, Yutaka Kaneoka, Ichiro |
| author_facet | Ozima, Minoru Takigami, Yutaka Kaneoka, Ichiro |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | The technique of 40Ar-39Ar step-heating dating was applied to three rock samples from core of DSDP Site 443, one sample from Site 445, and four samples at Site 446. All sites were drilled during DSDP Leg 58. At Site 443 (Shikoku Basin), about 116 meters of basalt basement was drilled. Three samples were chosen for dating from different levels in the basalt; two samples are aphyric basalt, and the other is subophitic dolerite. At Site 445 (Daito Ridge), no basement rock was drilled; however, conglomeratic sandstone was cored in the lower part of the hole. 40Ar-39Ar dating was applied to a basalt pebble in the conglomerate. At Site 446 (Daito Basin), the lower cored sequence is clay stone interlayered with 16 basalt sills. Four samples were chosen from sills at different levels. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_821516 |
| institution | PANGAEA |
| language | en |
| publishDate | 1980 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | 40Ar-39Ar geochronological studies on rocks at DSDP Leg 58 Holes Ozima, Minoru Takigami, Yutaka Kaneoka, Ichiro 58-443; 58-445; 58-446A; Deep Sea Drilling Project; DRILL; Drilling/drill rig; DSDP; Glomar Challenger; Leg58; North Pacific/BASIN; North Pacific/Philippine Sea/BASIN The technique of 40Ar-39Ar step-heating dating was applied to three rock samples from core of DSDP Site 443, one sample from Site 445, and four samples at Site 446. All sites were drilled during DSDP Leg 58. At Site 443 (Shikoku Basin), about 116 meters of basalt basement was drilled. Three samples were chosen for dating from different levels in the basalt; two samples are aphyric basalt, and the other is subophitic dolerite. At Site 445 (Daito Ridge), no basement rock was drilled; however, conglomeratic sandstone was cored in the lower part of the hole. 40Ar-39Ar dating was applied to a basalt pebble in the conglomerate. At Site 446 (Daito Basin), the lower cored sequence is clay stone interlayered with 16 basalt sills. Four samples were chosen from sills at different levels. |
| title | 40Ar-39Ar geochronological studies on rocks at DSDP Leg 58 Holes |
| topic | 58-443; 58-445; 58-446A; Deep Sea Drilling Project; DRILL; Drilling/drill rig; DSDP; Glomar Challenger; Leg58; North Pacific/BASIN; North Pacific/Philippine Sea/BASIN |
| url | https://doi.org/10.1594/PANGAEA.821516 |