Uranium series disequilibrium and isotope stratigraphy in hydrothermal mound samples from DSDP sites 506-509, Leg 70 and Site 424, Leg 54; an attempt at chronology

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doi: 10.2973/dsdp.proc.70.115.1983
Author(s): Lalou, Claude; Brichet, Evelyne; Leclaire, Héloĩse; Duplessy, Jean-Claude
Author Affiliation(s): Primary:
Lab. Mixte CNRS-CEA, Cent. Faibles Radioact., Gif sur Yvette, France
Other:
Woods Hole Oceanogr. Inst., Dep. Geol. Geophys., United States
Univ. Tubingen, Mineral. Inst., Federal Republic of Germany
Scripps Inst. Oceanogr., United States
Univ. R.I., Grad. Sch. Oceanogr., United States
Univ. Karlsruhe, Inst. Petrogr. Geochem., Federal Republic of Germany
Fla. State Univ., Dep. Geol., United States
Univ. Tokyo, Ocean Res. Inst., Japan
Oreg. State Univ., Sch. Oceanogr., United States
Univ. Ocean Indien, Lab. Geol., France
USSR Acad. Sci., V.I. Vernadsky Inst. Geochem. Anal. Chem., USSR
Imp. Coll., Dep. Geol., United Kingdom
Univ. Ala., Dep. Geol. Geogr., United States
Volume Title: Initial reports of the Deep Sea Drilling Project covering Leg 70 of the cruises of the drilling vessel Glomar Challenger; Balboa, Panama to Callao, Peru, November-December, 1979
Volume Author(s): Honnorez, Jose; Von Herzen, Richard P.; Barrett, Timothy J.; Becker, Keir; Bender, Michael L.; Borella, Peter E.; Hubberten, Hans-Wolfgang; Jones, Steven C.; Karato, Shun-ichiro; Laverne, Christine; Levi, Shaul; Migdisov, Areg A.; Moorby, S. Anthony; Schrader, Edward L.; Amidei, Rosemary
Source: Initial reports of the Deep Sea Drilling Project covering Leg 70 of the cruises of the drilling vessel Glomar Challenger; Balboa, Panama to Callao, Peru, November-December, 1979, Jose Honnorez, Richard P. Von Herzen, Timothy J. Barrett, Keir Becker, Michael L. Bender, Peter E. Borella, Hans-Wolfgang Hubberten, Steven C. Jones, Shun-ichiro Karato, Christine Laverne, Shaul Levi, Areg A. Migdisov, S. Anthony Moorby, Edward L. Schrader and Rosemary Amidei. Initial Reports of the Deep Sea Drilling Project, Vol.70, p.303-314. Publisher: Texas A & M University, Ocean Drilling Program, College Station, TX, United States. ISSN: 0080-8334 CODEN: IDSDA6
Note: In English. 54 refs.; illus. incl. 6 tables
Summary: A hydraulic piston corer was used to obtain undisturbed sedimentary sequences down to the basement. The AAS and EDAX data can be summarized as follows: 600 000-300 000 yr B.P., pelagic sedimentation; 400 000-300 000 yr B.P., hydrothermal injection of U; 300 000-90 000 yr B.P., nontronite by replacement; 60 000-20 000 yr B.P., Mn oxides by replacement; and 19 000 yr B.P., U-injection by sea-water marking the end of hydrothermal circulation. At hole 424, the data suggest that some of the mounds are forming Mn oxides now.
Year of Publication: 1983
Research Program: DSDP Deep Sea Drilling Project
IPOD International Phase of Ocean Drilling
Key Words: 02 Geochemistry; 07 Marine Geology and Oceanography; Absolute age; Actinides; Clastic sediments; Clay; Clay minerals; DSDP Site 506; DSDP Site 507; DSDP Site 508; DSDP Site 509; Dates; Deep Sea Drilling Project; East Pacific; Galapagos Rift; Geochemistry; Geochronology; Hydrothermal vents; IPOD; Isotopes; Leg 54; Leg 70; Manganese oxides; Marine sediments; Metals; Nontronite; North American Pacific; North Pacific; Northeast Pacific; Oceanography; Oxides; Oxygen; Pacific Ocean; Panama Basin; Radioactive isotopes; Sediments; Sheet silicates; Silicates; Stratigraphy; Uranium
Coordinates: N003000 N020000 W0830000 W0870000
Record ID: 1983042375
Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom