Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/622
DC Field | Value | Language |
---|---|---|
dc.contributor.authorall | D'Antonio, M.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia | en |
dc.contributor.authorall | Kristensen, M. B.; University of Aarhus, Department of Earth Sciences | en |
dc.date.accessioned | 2006-01-23T14:36:47Z | en |
dc.date.available | 2006-01-23T14:36:47Z | en |
dc.date.issued | 2005 | en |
dc.identifier.uri | http://hdl.handle.net/2122/622 | en |
dc.description.abstract | Secondary minerals of a 91 meters-thick sequence of pillow basalts cored during ODP Leg 195 (Site 1201, West Philippine Basin) were investigated to reconstruct the hydrothermal alteration history and regime. The basement was first buried by red clays, and then by a thick turbidite sequence, thereby isolating it from seawater. The basalts are primitive to moderately fractionated, texturally variable from hypocrystalline and spherulitic to intersertal, sub-ophitic and intergranular. Relic primary minerals are plagioclase, clinopyroxene and opaques. Hydrothermal alteration pervasively affected the basalts, generating secondary clay minerals (mostly glauconite, minor Al-saponite and Fe-beidellite, Na-zeolites, minor alkali-feldspar and calcite. The secondary mineral paragenesis and mutual relationships suggest that the hydrothermal alteration occurred under zeolite-facies conditions, at temperatures 100-150 C. The main phase of alteration occurred under oxidizing conditions, with a high seawater rock ratio, in an open-circulation regime, at temperatures of 30-60 C, with precipitation of abundant glauconite and iddingsite. A later stage of alteration occurred at ca. 70 C, with precipitation of abundant Na-zeolites and minor calcite, in a more restricted circulation regime as a consequence of basement burial under the sedimentary cover, which supplied an altered, Ca-rich and Magma-sulfate-poor water causing precipitation of almost pure calcite. | en |
dc.format.extent | 478 bytes | en |
dc.format.extent | 1006865 bytes | en |
dc.format.mimetype | text/html | en |
dc.format.mimetype | application/pdf | en |
dc.language.iso | English | en |
dc.publisher.name | Springer | en |
dc.relation.ispartof | Mineralogy and petrology | en |
dc.relation.ispartofseries | 83 | en |
dc.subject | west Philippine | en |
dc.subject | Mineral chemistry | en |
dc.title | Hydrothermal alteration of oceanic crust in the West Philichemistry investigationppine Sea Basin(Ocean Drilling Program Leg 195,Site 1201): inferences from a mineral | en |
dc.type | article | en |
dc.description.status | Published | en |
dc.type.QualityControl | Peer-reviewed | en |
dc.description.pagenumber | 87-112 | en |
dc.identifier.URL | http://springerlink.metapress.com/ | en |
dc.subject.INGV | 04. Solid Earth::04.04. Geology::04.04.05. Mineralogy and petrology | en |
dc.subject.INGV | 04. Solid Earth::04.04. Geology::04.04.07. Rock geochemistry | en |
dc.identifier.doi | 10.1007/s00710-004-0060-6 | en |
dc.relation.references | en | |
dc.description.fulltext | open | en |
dc.contributor.author | D'Antonio, M. | en |
dc.contributor.author | Kristensen, M. B. | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia | en |
dc.contributor.department | University of Aarhus, Department of Earth Sciences | en |
item.openairetype | article | - |
item.cerifentitytype | Publications | - |
item.languageiso639-1 | en | - |
item.grantfulltext | open | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | With Fulltext | - |
crisitem.author.dept | Università di Napoli "Federico II" | - |
crisitem.author.dept | 3Department of Earth Sciences, University of Aarhus, CF Møllers Allé Building 110, DK-8000 Århus, Denmark. | - |
crisitem.classification.parent | 04. Solid Earth | - |
crisitem.classification.parent | 04. Solid Earth | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
Appears in Collections: | Article published / in press |
Files in This Item:
File | Description | Size | Format | |
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D'Antonio.pdf | 983.27 kB | Adobe PDF | View/Open | |
springerlink.htm | redirect - springerlink | 478 B | HTML | View/Open |
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