Skip to Main Content
Skip Nav Destination
GEOREF RECORD

Zeolite distribution in volcaniclastic deep-sea sediments from the Tonga Trench margin (SW Pacific)

Frederic Vitali, Gerard Blanc and Philippe Larque
Zeolite distribution in volcaniclastic deep-sea sediments from the Tonga Trench margin (SW Pacific)
Clays and Clay Minerals (February 1995) 43 (1): 92-104

Abstract

605 m of sediments were cored in Hole 841 of the Ocean Drilling Program (ODP) at the Tonga Trench margin. The sedimentary sequence consists mainly of Miocene vitric siltstones, vitric sandstones, and volcanic conglomerates. A major consideration for selecting this site was the presence of abundant authigenic minerals (40% to 70% of the whole rock), which consist of K-feldspars, clays, thaumasite (Ca (sub 3) Si(OH) (sub 6) CO (sub 3) SO (sub 4) , 12H (sub 2) O), and zeolites. The zeolite minerals include phillipsite, clinoptilolite, analcime, mordenite, chabazite, heulandite, wairakite, and erionite. The increasing amount of analcime from 257 mbsf to 470 mbsf, and the joint occurrence of mordenite and wairakite in this zone of Miocene tufts, seems to be induced by the heat flow from a major intrusive sequence of basaltic andesite sills and dikes. This abundance of analcime in response to the thermal pulse could explain the unusual Na-depleted porewater compositions observed in ODP Hole 841.


ISSN: 0009-8604
Coden: CLCMAB
Serial Title: Clays and Clay Minerals
Serial Volume: 43
Serial Issue: 1
Title: Zeolite distribution in volcaniclastic deep-sea sediments from the Tonga Trench margin (SW Pacific)
Affiliation: Institut de Geologie Strasbourg, Centre de Geochimie de la Surface, Strasbourg, France
Pages: 92-104
Published: 199502
Text Language: English
Publisher: Clay Minerals Society, Clarkson, NY, United States
References: 42
Accession Number: 1995-034867
Categories: OceanographyMineralogy of silicates
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 3 tables
S23°20'45" - S23°20'43", W175°17'53" - W175°17'52"
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Abstract, Copyright, Mineralogical Society of Great Britain and Ireland
Update Code: 199513
Program Name: ODPOcean Drilling Program
Close Modal

or Create an Account

Close Modal
Close Modal