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Chemical composition of zeolites in sandstones at DSDP Sites 445 and 446

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.

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Cite this as

Lee, Yong Il (1988). Dataset: Chemical composition of zeolites in sandstones at DSDP Sites 445 and 446. https://doi.org/10.1594/PANGAEA.700011

DOI retrieved: 1988

Additional Info

Field Value
Imported on November 30, 2024
Last update November 30, 2024
License CC-BY-3.0
Source https://doi.org/10.1594/PANGAEA.700011
Author Lee, Yong Il
Given Name Yong Il
Family Name Lee
Source Creation 1988
Publication Year 1988
Resource Type application/zip - filename: Lee-1988
Subject Areas
Name: Chemistry

Name: Lithosphere

Related Identifiers
Title: Chemistry and origin of zeolites in sandstones at DSDP Sites 445 and 446, Daito Ridge and Basin Province, northwest Pacific
Identifier: https://doi.org/10.1016/0009-2541(88)90132-5
Type: DOI
Relation: IsSupplementTo
Year: 1988
Source: Chemical Geology
Authors: Lee Yong Il .