Lee, Yong Il (1988): Chemical composition of zeolites in sandstones at DSDP Sites 445 and 446 [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.700011, Supplement to: Lee, YI (1988): Chemistry and origin of zeolites in sandstones at DSDP Sites 445 and 446, Daito Ridge and Basin Province, northwest Pacific. Chemical Geology, 67(3-4), 261-273, https://doi.org/10.1016/0009-2541(88)90132-5
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Abstract:
Andesitic volcaniclastic sandstones of Middle Eocene age recovered from DSDP Sites 445 and 446, a back-arc basin, contain clinoptilolite, heulandite and analcite as a pore-filling cement. Clinoptilolite and heulandite at Sites 445 and 446 contain different chemical composition from other deep-sea clinoptilolites and heulandites. The dominant cation of both clinoptilolite and heulandite is Na+ ion activity in pore water was greater at the time of their formation. Volcanic glass has acted as a precursor for both clinoptilolite and heulandite at Sites 445 and 446. Biogenic silica is also suggested as a precursor.
High Na+ ion activity in pore water also helped to transform clinoptilolite and heulandite to analcite downhole. The necessary Na+ ions for this clinoptilolite, heulandite and analcite at Sites 445 and 446 might have been provided by hydrothermal circulation of seawater through more permeable sandstones deposited during early stages of back-arc basin rifting.
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Median Latitude: 25.111700 * Median Longitude: 132.991500 * South-bound Latitude: 24.700700 * West-bound Longitude: 132.774800 * North-bound Latitude: 25.522700 * East-bound Longitude: 133.208200
Date/Time Start: 1978-01-11T00:00:00 * Date/Time End: 1978-01-18T00:00:00
Event(s):
58-445 * Latitude: 25.522700 * Longitude: 133.208200 * Date/Time: 1978-01-11T00:00:00 * Elevation: -3377.0 m * Penetration: 892 m * Recovery: 609.5 m * Location: North Pacific/BASIN * Campaign: Leg58 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 93 cores; 882.5 m cored; 0 m drilled; 69.1 % recovery
58-446 * Latitude: 24.700700 * Longitude: 132.774800 * Date/Time: 1978-01-18T00:00:00 * Elevation: -4952.0 m * Penetration: 420.5 m * Recovery: 196.7 m * Location: North Pacific/Philippine Sea/BASIN * Campaign: Leg58 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 45 cores; 411 m cored; 9.5 m drilled; 47.9 % recovery
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
2 datasets
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Datasets listed in this publication series
- Lee, YI (1988): (Table 1) Chemical analyses of five representative clinoptilolites and heulandites at DSDP Sites 445 and 446. https://doi.org/10.1594/PANGAEA.700009
- Lee, YI (1988): (Table 2) Chemical analyses of three representative analcites at DSDP Sites 445 and 446. https://doi.org/10.1594/PANGAEA.700010