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| Format: | Dataset Open Access |
| Language: | en |
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PANGAEA
1983
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| Online Access: | https://doi.org/10.1594/PANGAEA.816580 |
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| _version_ | 1867168142953807872 |
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| author | Terrell, David J Mitchell, John G |
| author_facet | Terrell, David J Mitchell, John G |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Conventional K-Ar ages have been determined and inert-gas abundances have been measured on representative samples of altered rocks from Deep Sea Drilling Project Holes 501, 504B, and 505B in an attempt to correlate their degree of alteration with inert-gas and K-Ar data. Samples taken from the first 60 meters below the sediment/basalt interface give significantly higher ages than would be expected from the magnetic stratigraphy, though at greater depths the calculated ages are in broad agreement with the expected age. The inert gas ratios 20Ne/36Ar, 36Ar/84Kr, and 84Kr/130Xe also show a marked discontinuity at the 60-meter depth, and all these effects are interpreted as being a consequence of low-temperature alteration produced by burial metamorphism and by interaction with sea water (halmyrolysis). |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_816580 |
| institution | PANGAEA |
| language | en |
| publishDate | 1983 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | (Table 1) K-Ar age and inert-gas-isotopes at DSDP Holes 68-501, 69-504B and 69-505B Terrell, David J Mitchell, John G 68-501; 69-504B; 69-505B; Age, 40K/40Ar Potassium-Argon; Age, dated; Age, dated, standard deviation; Argon-36; Argon-40; Deep Sea Drilling Project; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP; DSDP/ODP/IODP sample designation; Event label; Flame photometry; Glomar Challenger; Leg68; Leg69; North Pacific/FLANK; North Pacific/GRABEN; Piece; Potassium oxide; Ratio; Sample code/label; see reference(s) Conventional K-Ar ages have been determined and inert-gas abundances have been measured on representative samples of altered rocks from Deep Sea Drilling Project Holes 501, 504B, and 505B in an attempt to correlate their degree of alteration with inert-gas and K-Ar data. Samples taken from the first 60 meters below the sediment/basalt interface give significantly higher ages than would be expected from the magnetic stratigraphy, though at greater depths the calculated ages are in broad agreement with the expected age. The inert gas ratios 20Ne/36Ar, 36Ar/84Kr, and 84Kr/130Xe also show a marked discontinuity at the 60-meter depth, and all these effects are interpreted as being a consequence of low-temperature alteration produced by burial metamorphism and by interaction with sea water (halmyrolysis). |
| title | (Table 1) K-Ar age and inert-gas-isotopes at DSDP Holes 68-501, 69-504B and 69-505B |
| topic | 68-501; 69-504B; 69-505B; Age, 40K/40Ar Potassium-Argon; Age, dated; Age, dated, standard deviation; Argon-36; Argon-40; Deep Sea Drilling Project; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP; DSDP/ODP/IODP sample designation; Event label; Flame photometry; Glomar Challenger; Leg68; Leg69; North Pacific/FLANK; North Pacific/GRABEN; Piece; Potassium oxide; Ratio; Sample code/label; see reference(s) |
| url | https://doi.org/10.1594/PANGAEA.816580 |