Grain Size and Magnetic Fabric Data
Entry ID: NOAA_NCDC_PALEO_2003-023

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Summary
Abstract: Grain Size and Magnetic Fabric Data interpreted in terms of
depositional environment and paleocurrent strength.

ABSTRACT (from the online documentation):
The combined use of grain size and magnetic fabric analyses provides
the ability to discriminate among depositional environments in
deep-sea terrigenous sediments. We analyzed samples from three
different depositional settings: turbidites, pelagic or hemipelagic
interlayers, and sediment drifts. Results indicate that sediment
samples from these different environments can be distinguished from
each other on the basis of their median grain size, sorting, as well
as the intensity and shape of magnetic fabric as determined from an
examination of the anisotropy of magnetic susceptibility. We use these
discriminators to interpret downcore samples from the Bermuda Rise
sediment drift. We find that the finer grains of the Bermuda Rise
(relative to the Blake Outer Ridge) do not result from lower
depositional energy (current speed) and so may reflect a difference in
the nature of sediment being delivered to the site (i.e. distance from
source) between the two locations.

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Link: GET DATA
Description: Access to data and documentation


Geographic Coverage
 N: 39.27 S: 39.27  E: -127.38  W: -127.38
 Min Depth: 0 M  Max Depth: 4335 M
 N: 39.59 S: 39.59  E: -127.18  W: -127.18
 Min Depth: 0 M  Max Depth: 4294 M
 N: 31.25 S: 31.25  E: -74.83  W: -74.83
 Min Depth: 0 M  Max Depth: 3180 M
 N: 42.08 S: 42.08  E: -125.67  W: -125.67
 Min Depth: 0 M  Max Depth: 2970 M

Data Set Citation
Dataset Originator/Creator: Joseph, L., Rea, D.K., van der Pluijm, B.A.
Dataset Title: Grain Size and Magnetic Fabric Data
Dataset Series Name: IGBP PAGES/WDCA CONTRIBUTION SERIES NUMBER: 2003-023
Dataset Release Date: April 2003
Dataset Release Place: Boulder, CO
Dataset Publisher: IGBP PAGES/World Data Center for Paleoclimatology
Issue Identification: 2003-023
Other Citation Details: NOAA/NCDC Paleoclimatology Program
Online Resource: ftp://ftp.ncdc.noaa.gov/pub/data/paleo/paleocean/by_contributor/jos...


Location Keywords
OCEAN > ATLANTIC OCEAN
OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN
OCEAN > PACIFIC OCEAN


Science Keywords
OCEANS >BATHYMETRY/SEAFLOOR TOPOGRAPHY >WATER DEPTH    [Definition]
OCEANS >MARINE SEDIMENTS >GEOTECHNICAL PROPERTIES    [Definition]
OCEANS >MARINE SEDIMENTS >SEDIMENT COMPOSITION    [Definition]
OCEANS >MARINE SEDIMENTS >SEDIMENTATION    [Definition]
OCEANS >MARINE SEDIMENTS >STRATIGRAPHIC SEQUENCE    [Definition]
OCEANS >MARINE SEDIMENTS >TERRIGENOUS SEDIMENTS    [Definition]
OCEANS >OCEAN CIRCULATION >OCEAN CURRENTS    [Definition]
PALEOCLIMATE >OCEAN/LAKE RECORDS >SEDIMENTS    [Definition]
PALEOCLIMATE >OCEAN/LAKE RECORDS >STRATIGRAPHIC SEQUENCE    [Definition]


ISO Topic Category
CLIMATOLOGY/METEOROLOGY/ATMOSPHERE
ELEVATION
GEOSCIENTIFIC INFORMATION
OCEANS


Project
PAGES >Past Global Changes, IGBP    [Information]


Keywords
paleoceans
Bermuda Rise
sediment drift
Blake Outer Ridge
paleocurrents
California margin


Data Center
World Data Center for Paleoclimatology, Boulder    [Information]
Data Center URL: http://www.ncdc.noaa.gov/paleo/

Data Center Personnel
Name: WDC/PALEOCLIMATOLOGY, BOULDER
Phone: +1 (303) 497-6160
Fax: +1 (303) 497-6513
Email: paleo at noaa.gov
Contact Address:
World Data Center for Paleoclimatology
NOAA/NCDC Code E/GCx3
325 Broadway
City: Boulder
Province or State: CO
Postal Code: 80303
Country: USA


Personnel
LEAH JOSEPH
Role: INVESTIGATOR


DAVID K. REA
Role: INVESTIGATOR
Email: davidrea at umich.edu


B. A. VAN DER PLUIJM
Role: INVESTIGATOR


Publications/References
Joseph, L., Rea, D.K., van der Pluijm, B.A., 1998, Use of grain size
and magnetic fabric analyses to distinguish among depositional
environments, Paleoceanography, Vol 13, No. 5, Pages 491-501.

Creation and Review Dates
DIF Creation Date: 2004-03-19
Last DIF Revision Date: 2004-03-22

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