History of hydrothermal activity at the East Pacific Rise between 5°S and 12°N for the past 18 My

Author(s): Gurvich, E. G.
Author Affiliation(s): Primary:
Russian Academy of Sciences, Shirshov Institute of Oceanology, Moscow, Russian Federation
Volume Title: Oceanology
Source: Oceanology, 38(2), p.228-234. Publisher: MAIK Nauka/Interperiodica, Birmingham, AL, United States. ISSN: 0001-4370 CODEN: ONLGAE
Note: In English. 40 refs.; illus., incl. 2 tables, geol. sketch map
Summary: Chemical composition of the bottom sediments obtained during Leg 138 of the Ocean Drilling Program was studied. Metalliferous sediments from the East Pacific Rise have lower average contents of Fe, Mn, Cu, Zn, and Ni, and higher average contents of Al and Ti as compared with the average contents of the metalliferous sediments of the Pacific Ocean. An attempt was made to study the spatial and temporal evolution of hydrothermal activity at the axis of the East Pacific Rise between 5°S and 12°N using the estimates of the rates of accumulation of hydrothermal iron in the sediments during the past 18 My.
Year of Publication: 1998
Research Program: DSDP Deep Sea Drilling Project
ODP Ocean Drilling Program
Key Words: 02 Geochemistry; 05 Petrology, Igneous and Metamorphic; 07 Marine Geology and Oceanography; Aluminum; Bottom water; Cenozoic; Copper; Cores; DSDP Site 83; Deep Sea Drilling Project; East Pacific; East Pacific Rise; Equatorial Pacific; Hydrothermal alteration; Hydrothermal conditions; Iron; Leg 138; Leg 9; Lithostratigraphy; Manganese; Marine geology; Marine sedimentation; Marine sediments; Metals; Metasomatism; Miocene; Neogene; Nickel; Ocean Drilling Program; Pacific Ocean; Pelagic sedimentation; Quaternary; Sedimentary rocks; Sedimentation; Sediments; Spatial variations; Tertiary; Titanium; Zinc
Coordinates: N040248 N040248 W0954415 W0954415
S030548 N111326 W0902851 W1103419
Record ID: 1999029208
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