Not logged in
PANGAEA.
Data Publisher for Earth & Environmental Science

Helm, Roger (1985): Mineralogy and geochemistry of weathered serpentinites in DSDP Leg 84 sediments [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.803889, Supplement to: Helm, R (1985): Mineralogy and geochemistry of weathered serpentinites, Deep Sea Drilling Project Leg 84. In: von Heune, R; Aubouin, J; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Govt. Printing Office), 84, 595-607, https://doi.org/10.2973/dsdp.proc.84.116.1985

Always quote citation above when using data! You can download the citation in several formats below.

Published: 1985 (exact date unknown) • DOI registered: 2013-01-10

RIS CitationBibTeX Citation ShareShow MapGoogle Earth

Abstract:
At Sites 566, 567, and 570 of Leg 84, ophiolitic serpentinite basement was covered by a sequence of serpentinitic mud that was formed by weathering of the serpentinites under sea- or pore-water conditions. Several mineralogical processes were observed: (1) The serpentinitic mud that consists mainly of chrysotile was formed from the lizardite component of the serpentinites by alteration. (2) Slightly trioctahedral smectites containing nonexpandable mica layers, trioctahedral smectites containing nonexpandable chlorite layers, and swelling chlorites were presumably formed from detrital chlorite and/or serpentine. (3) The occurrence of tremolite, chlorite, analcime, and talc can be attributed to reworking of gabbroic ophiolite rocks. (4) Dolomite, aragonite, and Mg-calcite, all authigenic, occur in the serpentinitic mud.
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Median Latitude: 12.909800 * Median Longitude: -91.033724 * South-bound Latitude: 12.716000 * West-bound Longitude: -91.392800 * North-bound Latitude: 13.285300 * East-bound Longitude: -90.692200
Date/Time Start: 1982-01-24T00:00:00 * Date/Time End: 1982-02-17T00:00:00
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
3 datasets

Download Data

Download ZIP file containing all datasets as tab-delimited text — use the following character encoding:

Datasets listed in this publication series

  1. Helm, R (1985): (Table 2) Expandable clay minerals in serpentinitic muds at DSDP Hole 84-567. https://doi.org/10.1594/PANGAEA.803887
  2. Helm, R (1985): (Table 3) Chemical composition of gabbros, serpentinites, average sediments, and serpentinitic muds at DSDP Leg 84 Holes. https://doi.org/10.1594/PANGAEA.803888
  3. Helm, R (1985): (Table 1) Mineral composition of serpentinitic mud (>63 µm and <63 µm) and serpentinites at DSDP Leg 84 Holes. https://doi.org/10.1594/PANGAEA.803886