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Record Search Query:

Crustal Ages of the Ocean Floor - Poster
Entry ID: gov.noaa.ngdc.G01167

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Summary

Abstract: ABSTRACT: The Crustal Ages of the Ocean Floor Poster was created at NGDC using the Crustal Ages of the Ocean Floor database draped digitally over a relief of the ocean floor database. The Crustal Ages of the Ocean Floor database was created by a consortia of marine scientists including Dr. R. Dietmar Muller, Dept. of Geology and Geophysics, University of Sydney, Australia, Dr. Walter R. Roest, ... Geological Survey of Canada, Ottawa, Canada, Dr. Jean-Yves Royer, Lab. de Geodynamique, Villefranche Sur Mer, France, Dr. Lisa M. Gahagan, Institute for Geophysics, University of Texas, Austin, Texas, and Dr. John G. Sclater, Scripps Institution of Oceanography, La Jolla, California. This version of the age grid is based on the geomagnetic time scale of Cande and Kent (1995) for magnetic anomalies younger than chron 34 (83.5 Ma), and on the time scale from Gradstein et al, (1994) for older times. The grid node interval is 6 arc-minutes using a self- consistent set of global isochrons and associated plate reconstruction poles. The age of each grid node was determined by linear interpolation between adjacent isochrons in the direction of spreading. Ages for ocean floor between the oldest identified magnetic anomalies and continental crust were interpolated by estimating the ages of passive continental margin segments from geological data and published plate models. The gridded ages of the ocean floor are based on a digital set of isochrons. The isochrons are based on a large number of marine magnetic anomaly data, satellite altimetry data, and a self- consistent plate model. The finite rotation poles that the isochrons are based on and the references to the magnetic anomaly and fracture zone data are documented in the: University of Texas Institute for Geophysics Technical Report No. 117, 1992, "A global isochron chart" by J.-Y. Royer, R.D. Muller, L.M. Gahagan, L.A. Lawver, C.L. Mayes, D. Nurnberg, and J.G. Sclater. Digital age and error grids, files of continent-ocean boundaries and present day plate boundaries, a C-program to adapt the grid to new timescales, can be obtained from public ftp sites in North America and Australia.

CURRENTNESS REFERENCE: Publication Date

DATA SET CREATORS: Dr. R. Dietmar Muller, Dept. of Geology and GeophysicsUniversity of Sydney, AustraliaDr. Walter R. Roest, Geological Survey of Canada, Ottawa, CanadaDr. Jean-Yves Royer, Lab. de Geodynamique, Villefranche, Sur Mer FranceDr. Lisa M. Gahagan, Institute for Geophysics, Univ. of TexasDr. John G. Sclater, Scripps Institution of Oceanography

Purpose: PURPOSE: Research, Public Interest, Education

Related URL

Link: GET DATA

ISO Topic Category

CLIMATOLOGY/METEOROLOGY/ATMOSPHERE
ELEVATION
GEOSCIENTIFIC INFORMATION
OCEANS

Platform

DRILLING PLATFORMS

SHIPS

Instrument

CORING DEVICES

DREDGING DEVICES

MAGNETOMETERS

Project

ESIP >Earth Science Information Partners Program

Access Constraints ACCESS CONSTRAINTS: No Constraints

DISTRIBUTION LIABILITY: Disclaimer While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty.

CUSTOM ORDER PROCESS: Contact data center for information

Use Constraints None

Ancillary Keywords

Ocean Crust
Geologic Age

Personnel

PETER W. SLOSS
Role: TECHNICAL CONTACT
Phone: 303-497-6119
Fax: 303-497-6513
Email: Peter.W.Sloss at noaa.gov
Contact Address:
National Geophysical Data Center
NOAA/NGDC E/GC3
325 Broadway
City: BOULDER
Province or State: CO
Postal Code: 80305-3328
Country: USA

ROBIN R. WARNKEN
Role: DIF AUTHOR
Phone: 303 497-6338
Fax: 303 497-6513
Email: Robin.R.Warnken at noaa.gov
Contact Address:
NOAA/NESDIS/NGDC
325 Broadway
City: Boulder
Province or State: CO
Postal Code: 80305-3328
Country: USA

Creation and Review Dates

SERF Creation Date:
SERF Last Revision Date:

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