Geochemistry and minerals at DSDP Hole 76-534A
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PANGAEA
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| Format: | Dataset Open Access |
| Sprache: | en |
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PANGAEA
1983
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| _version_ | 1867170465115537408 |
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| author | Logothetis, John |
| author_facet | Logothetis, John |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Leg 76 sampled 31.5 m of basaltic basement at Deep Sea Drilling Project Hole 534A in the Blake-Bahama Basin. The basalts represent a short section of mineralogically uniform, sparsely plagioclase-phyric pillow flows, composed mainly of plagioclase, augitic clinopyroxene, iron-titanium oxides with variable amounts of alteration products (smectite ± carbonate ± quartz). Their major element chemistry is typical of mid-ocean ridge tholeiites and has normative compositions of olivine tholeiites. Mg/(Mg + Fe**2+) ratios range from 0.58 to 0.60, which suggests that these basalts are evolved compared to primitive mantle melts. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_809961 |
| institution | PANGAEA |
| language | en |
| publishDate | 1983 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Geochemistry and minerals at DSDP Hole 76-534A Logothetis, John 76-534A; Deep Sea Drilling Project; DRILL; Drilling/drill rig; DSDP; Glomar Challenger; Leg76; North Atlantic/BASIN Leg 76 sampled 31.5 m of basaltic basement at Deep Sea Drilling Project Hole 534A in the Blake-Bahama Basin. The basalts represent a short section of mineralogically uniform, sparsely plagioclase-phyric pillow flows, composed mainly of plagioclase, augitic clinopyroxene, iron-titanium oxides with variable amounts of alteration products (smectite ± carbonate ± quartz). Their major element chemistry is typical of mid-ocean ridge tholeiites and has normative compositions of olivine tholeiites. Mg/(Mg + Fe**2+) ratios range from 0.58 to 0.60, which suggests that these basalts are evolved compared to primitive mantle melts. |
| title | Geochemistry and minerals at DSDP Hole 76-534A |
| topic | 76-534A; Deep Sea Drilling Project; DRILL; Drilling/drill rig; DSDP; Glomar Challenger; Leg76; North Atlantic/BASIN |
| url | https://doi.org/10.1594/PANGAEA.809961 |