Geochemistry and minerals at DSDP Leg 65 Holes
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| Hauptverfasser: | , |
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| Format: | Dataset Open Access |
| Sprache: | en |
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PANGAEA
1983
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| _version_ | 1867170466309865472 |
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| author | Flower, Martin F J O'Hearn, Timothy |
| author_facet | Flower, Martin F J O'Hearn, Timothy |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Petrologic studies of mid-ocean ridge basalt (MORB) (e.g., Melson et al., 1975; Flower, et al., 1977; Byerly and Wright, 1978; Melson, 1979; Byerly and Sinton, 1980; Thompson, 1980) show that magmatic liquid-fraction trends are indicated by the compositions of fresh glass selvedges, usually, but not always, associated with pillow basalts. In contrast, whole-rock compositional variation will often reflect the complicating effects of syn- and post-eruptive phenocryst accumulation. Additional variation may be introduced by the reaction of basalts with seawater. While comparatively severe alteration of variable type was noted locally in the young basalts recovered across the mouth of the Gulf of California on Leg 65, most of the basalts were extremely fresh, making them ideal for studies of compositional variation. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_818073 |
| institution | PANGAEA |
| language | en |
| publishDate | 1983 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Geochemistry and minerals at DSDP Leg 65 Holes Flower, Martin F J O'Hearn, Timothy 65-482B; 65-482C; 65-482D; 65-482F; 65-483; 65-483B; 65-485A; Deep Sea Drilling Project; DRILL; Drilling/drill rig; DSDP; Glomar Challenger; Leg65; North Pacific/Gulf of California/CONT RISE; North Pacific/Gulf of California/SEDIMENT POND Petrologic studies of mid-ocean ridge basalt (MORB) (e.g., Melson et al., 1975; Flower, et al., 1977; Byerly and Wright, 1978; Melson, 1979; Byerly and Sinton, 1980; Thompson, 1980) show that magmatic liquid-fraction trends are indicated by the compositions of fresh glass selvedges, usually, but not always, associated with pillow basalts. In contrast, whole-rock compositional variation will often reflect the complicating effects of syn- and post-eruptive phenocryst accumulation. Additional variation may be introduced by the reaction of basalts with seawater. While comparatively severe alteration of variable type was noted locally in the young basalts recovered across the mouth of the Gulf of California on Leg 65, most of the basalts were extremely fresh, making them ideal for studies of compositional variation. |
| title | Geochemistry and minerals at DSDP Leg 65 Holes |
| topic | 65-482B; 65-482C; 65-482D; 65-482F; 65-483; 65-483B; 65-485A; Deep Sea Drilling Project; DRILL; Drilling/drill rig; DSDP; Glomar Challenger; Leg65; North Pacific/Gulf of California/CONT RISE; North Pacific/Gulf of California/SEDIMENT POND |
| url | https://doi.org/10.1594/PANGAEA.818073 |