| _version_ | 1867168142810152960 |
|---|---|
| author | Kutsukake, Hiroshi |
| author_facet | Kutsukake, Hiroshi |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Dissolution rates of calcareous ooze were measured for samples from Deep Sea Drilling Project (DSDP) Site 506, which is in the area of the Galapagos Spreading Center. Using the free-drift method, measurements were carried out at 25 °C and atmospheric pressure. No significant difference in dissolution rates was found among the samples from three holes. However, in the present samples, the concentration of carbonate ion in seawater that is in equilibrium with calcite is 20 to 30% greater than is the case with synthetic calcite. That is, the dissolution rate of calcite under nearequilibrium conditions is greater than that of either synthetic calcite or sediments from the central Pacific (Morse, 1978). These results are consistent with field evidence indicating that the calcium carbonate compensation depth in the Galapagos region is shallower than in most other Pacific regions (Berger et al., 1976). |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_816188 |
| institution | PANGAEA |
| language | en |
| publishDate | 1983 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | (Table 2) Dissolution rate of sediments at DSDP Site 70-506 Kutsukake, Hiroshi 70-506; 70-506B; Carbon dioxide, partial pressure; Deep Sea Drilling Project; Dissolution rate; DRILL; Drilling/drill rig; DSDP; DSDP/ODP/IODP sample designation; Event label; Glomar Challenger; Leg70; North Pacific/MOUND; pH; Sample code/label; see reference(s) Dissolution rates of calcareous ooze were measured for samples from Deep Sea Drilling Project (DSDP) Site 506, which is in the area of the Galapagos Spreading Center. Using the free-drift method, measurements were carried out at 25 °C and atmospheric pressure. No significant difference in dissolution rates was found among the samples from three holes. However, in the present samples, the concentration of carbonate ion in seawater that is in equilibrium with calcite is 20 to 30% greater than is the case with synthetic calcite. That is, the dissolution rate of calcite under nearequilibrium conditions is greater than that of either synthetic calcite or sediments from the central Pacific (Morse, 1978). These results are consistent with field evidence indicating that the calcium carbonate compensation depth in the Galapagos region is shallower than in most other Pacific regions (Berger et al., 1976). |
| title | (Table 2) Dissolution rate of sediments at DSDP Site 70-506 |
| topic | 70-506; 70-506B; Carbon dioxide, partial pressure; Deep Sea Drilling Project; Dissolution rate; DRILL; Drilling/drill rig; DSDP; DSDP/ODP/IODP sample designation; Event label; Glomar Challenger; Leg70; North Pacific/MOUND; pH; Sample code/label; see reference(s) |
| url | https://doi.org/10.1594/PANGAEA.816188 |