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Grain Size and Magnetic Fabric Data Entry ID: NOAA_NCDC_PALEO_2003-023 |
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Summary
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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. |
Related URL
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Link:
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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
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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
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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
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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
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World Data Center for Paleoclimatology, Boulder
[Information]
Data Center URL: http://www.ncdc.noaa.gov/paleo/
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Personnel
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LEAH
JOSEPH Role: INVESTIGATOR |
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DAVID
K.
REA Role: INVESTIGATOR Email: davidrea at umich.edu |
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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.
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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