(Table 7) Fe**3+/Fe**2+ ratios in selected nontronite samples at DSDP Leg 70 Holes, supplement to: Moorby, S A; Cronan, David S (1983): Chemical composition of sediments from Sites 506, 507, 508, and 509, Leg 70, Deep Sea Drilling Project. In: Honnorez, J; Von Herzen, RP; et al. (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Govt. Printing Office), 70, 269-275


Since its discovery in 1974 (Klitgord and Mudie, 1974), the Galapagos mounds hydrothermal field has received much attention. Sediment samples were taken during Leg 54 of the Deep Sea Drilling Project (DSDP) and by other expeditions to the area (e.g., Corliss et al., 1978). While a hydrothermal origin for the mounds sediments has been generally accepted, several different theories of origin for the mounds themselves have been proposed (e.g., Corliss et al., 1978; Natland et al., 1979; Williams et al., 1979). One of the aims of DSDP Leg 70 was to return to the mounds field and, using the new hydraulic piston cor er described elsewhere in this volume, to obtain more complete recovery of mounds sediments than had previously been possible. It was our hope that this would help in our understanding of the nature and origin of these deposits. In this chapter, we describe the results of chemical analysis of over 250 sediment samples taken during the course of Leg 70.

DOI https://doi.org/10.1594/PANGAEA.815446
Related Identifier https://doi.org/10.2973/dsdp.proc.70.112.1983
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.815446
Creator Moorby, S A; Cronan, David S
Publisher PANGAEA - Data Publisher for Earth & Environmental Science
Publication Year 1983
Rights Creative Commons Attribution 3.0 Unported
OpenAccess true
Language English
Resource Type Supplementary Dataset
Format text/tab-separated-values
Size 70 data points
Discipline Earth System Research
Spatial Coverage (-86.132W, 0.567S, -86.090E, 0.610N); North Pacific/MOUND
Temporal Coverage Begin 1979-11-15T00:00:00Z
Temporal Coverage End 1979-11-27T00:00:00Z