Annotated record of the detailed examination of a ferromanganese crust retrieved the Emperor Seamount area in the Pacific Ocean by the R/V Kana Keoki during one of its KK76 expedition
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| Autori principali: | , |
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| Natura: | Dataset Open Access |
| Lingua: | en |
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PANGAEA
1980
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| _version_ | 1867171847127171072 |
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| author | Dalrymple, G Brent Garcia, M O |
| author_facet | Dalrymple, G Brent Garcia, M O |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | 40Ar/39Ar incremental heating experiments on three samples dredged from Jingu Seamount indicate that Jingu is 55.4 ± 0.9 m.y. old — older than the Hawaiian-Emperor bend and younger than the two dated Emperor Seamounts to the north. Major-oxide chemistry and petrography show that the samples are similar to hawaiites and mugearites from the Hawaiian Islands. By analogy with Hawaiian alkalic volcanic rocks, groundmass plagioclase compositions (An40-47) indicate that the three Jingu samples are probably mugearites. These results suggest that Jingu is a Hawaiian-type volcano and that the Emperor volcanoes become progressively older from south to north, as predicted by the hot-spot hypothesis. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_873569 |
| institution | PANGAEA |
| language | en |
| publishDate | 1980 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Annotated record of the detailed examination of a ferromanganese crust retrieved the Emperor Seamount area in the Pacific Ocean by the R/V Kana Keoki during one of its KK76 expedition Dalrymple, G Brent Garcia, M O Deep Sea Drilling Project; Deposit type; DEPTH, sediment/rock; Description; Dredge; DRG; DSDP; Identification; Kana Keoki; KK760806; KK760806-01,KK760806-02,KK76; KK760806-2 STA24 RD10; KK760806-RD10; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; Pacific Ocean; Position; Quantity of deposit; Sediment type; Size; Substrate type; Visual description 40Ar/39Ar incremental heating experiments on three samples dredged from Jingu Seamount indicate that Jingu is 55.4 ± 0.9 m.y. old — older than the Hawaiian-Emperor bend and younger than the two dated Emperor Seamounts to the north. Major-oxide chemistry and petrography show that the samples are similar to hawaiites and mugearites from the Hawaiian Islands. By analogy with Hawaiian alkalic volcanic rocks, groundmass plagioclase compositions (An40-47) indicate that the three Jingu samples are probably mugearites. These results suggest that Jingu is a Hawaiian-type volcano and that the Emperor volcanoes become progressively older from south to north, as predicted by the hot-spot hypothesis. |
| title | Annotated record of the detailed examination of a ferromanganese crust retrieved the Emperor Seamount area in the Pacific Ocean by the R/V Kana Keoki during one of its KK76 expedition |
| topic | Deep Sea Drilling Project; Deposit type; DEPTH, sediment/rock; Description; Dredge; DRG; DSDP; Identification; Kana Keoki; KK760806; KK760806-01,KK760806-02,KK76; KK760806-2 STA24 RD10; KK760806-RD10; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; Pacific Ocean; Position; Quantity of deposit; Sediment type; Size; Substrate type; Visual description |
| url | https://doi.org/10.1594/PANGAEA.873569 |