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Global Change Master Directory (GCMD)
Subsample Grain Size Analysis - Expedition Database
Entry ID: CANEMRCCRSSAD


Summary
Abstract: This dataset consists of grain size analysis conducted by the Geological Survey
of Canada (Atlantic) Sedimentology Laboratory on subsamples taken from all
types of samples collected as part of research cruises conducted by, or for,
the Geological Survey of Canada (Atlantic) and the results are archived in the
GSCA/GSCP Expedition Database. The analyses are typically conducted at either
full, half or quarter phi intervals. Summary statistics include percentages of
gravel, sand, silt, clay and mud as well as mean, kurtosis, skewness and
standard deviation.Grain size is a fundamental means of characterizing seabed
sediment. Seabed sediment may be named according to its grain size. Grain size
analysis of marine sediment samples?is a valuable method of determining: the
source of the sediments (i.e. whether they were derived from land and blown out
to sea; whether they were deposited by oceanic currents or delivered by
glaciers or icebergs); the energy level at the seabed under modern conditions
(e.g. is?it quiet enough for fine-grained sediments to be deposited or are
fines winnowed away,?leaving only coarser-grained sands and gravels behind?);
the energy level?in the past when sediments below the seabed were deposited,
based on down-core analysis of grain-size; the strength and stability
properties of the sediments and their response to loading. Sands, clays and
silts all behave very differently under loads. Even a small amount of fines can
make a sediment unstable. So grain size is a crucial part of doing a
geotechnical investigation of soil stability. The same applies for assessing
the stability of a slope under wave-, or sediment- or seismic- loading; the
potential for pollutants or contaminants to be deposited or transported;
determining whether sediments will be eroded and/or transported under the
effects of bottom currents that may be produced during tidal fluctuations or
severe winter storms.
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Direct Spatial Reference: Point
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Related URL
Link: View Related Information
Description: GeoConnections Discovery Portal. Canada's IDN Node.

Geographic Coverage
 N: 90.0 S: 40.0  E: -40.0  W: -141.0

Data Set Citation
Dataset Creator: Government of Canada, Natural Resources Canada, Geological Survey of Canada (Atlantic)
Dataset Title: Subsample Grain Size Analysis - Expedition Database
Dataset Release Place: Dartmouth, Nova Scotia, Canada
Dataset Publisher: Gov. Canada, NRCAN, Geological Survey of Canada (Atlantic)
Online Resource: http://gsc.nrcan.gc.ca/org/atlantic/index_e.php Database Grain Size


Temporal Coverage
Start Date: 1966-01-01


Location Keywords
OCEAN > ARCTIC OCEAN > BEAUFORT SEA
CONTINENT > NORTH AMERICA > CANADA > HUDSON BAY
CONTINENT > NORTH AMERICA > CANADA
CONTINENT > NORTH AMERICA > CANADA > MANITOBA
CONTINENT > NORTH AMERICA > CANADA > NEW BRUNSWICK
CONTINENT > NORTH AMERICA > CANADA > NORTHWEST TERRITORIES
CONTINENT > NORTH AMERICA > CANADA > NOVA SCOTIA
CONTINENT > NORTH AMERICA > CANADA > NUNAVUT
CONTINENT > NORTH AMERICA > CANADA > ONTARIO
CONTINENT > NORTH AMERICA > CANADA > PRINCE EDWARD ISLAND
CONTINENT > NORTH AMERICA > CANADA > QUEBEC
CONTINENT > NORTH AMERICA > CANADA > NEWFOUNDLAND AND LABRADOR
CONTINENT > NORTH AMERICA > CANADA > YUKON TERRITORY
CONTINENT > NORTH AMERICA > CANADA > GULF OF ST LAWRENCE
CONTINENT > NORTH AMERICA > CANADA > OFFSHORE CANADA
GEOGRAPHIC REGION > ARCTIC
CONTINENT > NORTH AMERICA
GEOGRAPHIC REGION > MID-LATITUDE
GEOGRAPHIC REGION > NORTHERN HEMISPHERE
GEOGRAPHIC REGION > POLAR
GEOGRAPHIC REGION > WESTERN HEMISPHERE


Science Keywords
LAND SURFACE >SOILS >SOIL TEXTURE    [Definition]
OCEANS >MARINE SEDIMENTS    [Definition]
SOLID EARTH >ROCKS/MINERALS/CRYSTALS >SEDIMENTARY ROCKS    [Definition]


Access Constraints
Data Accessible 2 Years After First Collected


Use Constraints
None


Keywords
GCMD
none
BEDROCK
GEOMORPHOLOGY
GRAIN SIZE
MARINE
MARINE GEOLOGY
SEDIMENTOLOGY
COASTAL


Data Set Progress
IN WORK


Data Center
Geological Survey of Canada-Atlantic, Earth Sciences Sector, Natural Resources Canada    [Information]
Data Center URL: http://www.nrcan.gc.ca/earth-sciences/science/geology/gsc/17100
Dataset ID: Subsample Grain Size Analysis Data Set

Data Center Personnel
Name: BARBARA SZLAVKO
Phone: +01-902-426-7262
Fax: +01-902-426-6152
Email: bszlavko at nrcan.gc.ca
Contact Address:
P.O. Box 1006, 1 Challenger Drive
City: Dartmouth
Province or State: Nova Scotia
Postal Code: B2Y 4A2
Country: Canada



Distribution
Fees: Fees may apply for formatting, media and delivery.


Personnel
BARBARA SZLAVKO
Role: DIF AUTHOR
Phone: +01-902-426-7262
Fax: +01-902-426-6152
Email: bszlavko at nrcan.gc.ca
Contact Address:
P.O. Box 1006, 1 Challenger Drive
City: Dartmouth
Province or State: Nova Scotia
Postal Code: B2Y 4A2
Country: Canada


OWEN BROWN
Role: TECHNICAL CONTACT
Phone: +01-902-426-3799
Fax: +01-902-426-4104
Email: obrown at nrcan.gc.ca
Contact Address:
P.O. Box 1006, 1 Challenger Drive
City: Dartmouth
Province or State: Nova Scotia
Postal Code: B2Y 4A2
Country: Canada


Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 2002-08-28
Last DIF Revision Date: 2017-08-24
Future DIF Review Date: 2005-07-19



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