Geochemistry, trace elements and minerals at DSDP Holes 80-550B and 80-551
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| Autori principali: | , , , , , |
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| Natura: | Dataset Open Access |
| Lingua: | en |
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PANGAEA
1985
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| _version_ | 1867170464908967936 |
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| author | Maury, R C Bellon, Herve Bougault, Henri Joron, Jean Louis Bohn, Marcel de Graciansky, Pierre C |
| author_facet | Maury, R C Bellon, Herve Bougault, Henri Joron, Jean Louis Bohn, Marcel de Graciansky, Pierre C |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | The Leg 80 basalts drilled on the Porcupine Abyssal Plain 10 km southwest of Goban Spur (Hole 550B) and on the western edge of Goban Spur (Hole 551), respectively, are typical light-rare-earth-element- (LREE-) depleted oceanic tholeiites. The basalts from the two holes are almost identical; most of their primary geochemical and mineralogical characteristics have been preserved, but they have undergone some low-temperature alteration by seawater, such as enrichment in K, Rb, and Cs and development of secondary potassic minerals of the "brownstone facies." K/Ar dating fail to give realistic emplacement ages; the apparent ages obtained become younger with alteration (causing an increase in K2O). Hole 551 basalts are clearly different from the continental tholeiites emplaced on the margins of oceanizing domains during the prerift and synrift stages. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_807892 |
| institution | PANGAEA |
| language | en |
| publishDate | 1985 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Geochemistry, trace elements and minerals at DSDP Holes 80-550B and 80-551 Maury, R C Bellon, Herve Bougault, Henri Joron, Jean Louis Bohn, Marcel de Graciansky, Pierre C Deep Sea Drilling Project; DSDP The Leg 80 basalts drilled on the Porcupine Abyssal Plain 10 km southwest of Goban Spur (Hole 550B) and on the western edge of Goban Spur (Hole 551), respectively, are typical light-rare-earth-element- (LREE-) depleted oceanic tholeiites. The basalts from the two holes are almost identical; most of their primary geochemical and mineralogical characteristics have been preserved, but they have undergone some low-temperature alteration by seawater, such as enrichment in K, Rb, and Cs and development of secondary potassic minerals of the "brownstone facies." K/Ar dating fail to give realistic emplacement ages; the apparent ages obtained become younger with alteration (causing an increase in K2O). Hole 551 basalts are clearly different from the continental tholeiites emplaced on the margins of oceanizing domains during the prerift and synrift stages. |
| title | Geochemistry, trace elements and minerals at DSDP Holes 80-550B and 80-551 |
| topic | Deep Sea Drilling Project; DSDP |
| url | https://doi.org/10.1594/PANGAEA.807892 |