The U.S. Geological Survey recovered 9 piston cores from the
Northwind Ridge in the Canada Basin of the Arctic Ocean from a
cruise of the USCGC Polar Star during 1988. Preliminary
analysis of the cores suggests sediments deposited on
Northwind Ridge preserve a detailed record of glacial and
interglacial cycles for the last few hundred-thousand to one
million years. This report includes quantitative data on
foraminifers and selected sediment size-fraction data in
samples from Northwind Ridge core PI-88AR P5.
Purpose:
These foraminifer data will be the basis for future
interpretive studies of the climate history of the Arctic
Ocean.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1991
Currentness_Reference: publication date
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -157.884
East_Bounding_Coordinate: -157.884
North_Bounding_Coordinate: 74.622
South_Bounding_Coordinate: 74.622
Keywords:
Theme:
Theme_Keyword_Thesaurus: none
Theme_Keyword: Paleoclimate
Theme_Keyword: Paleoceanography
Theme_Keyword: Foraminifera
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: Arctic Ocean
Place_Keyword: Canada Basin
Place_Keyword: Northwind Ridge
Temporal:
Temporal_Keyword_Thesaurus: None
Temporal_Keyword: Present
Theme:
Theme_Keyword_Thesaurus: National Geologic Map Database Catalog themes, augmented
Theme_Keyword: 1300 - Marine Geology
Theme_Keyword: 1700 - Paleontology
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Categories
Theme_Keyword: geoscientificInformation
Place:
Place_Keyword_Thesaurus: Augmented FIPS 10-4 and FIPS 6-4, version 1.0
Place_Keyword: OC10 = Arctic
Access_Constraints: none
Use_Constraints: none
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Kevin M. Foley
Contact_Address:
Address_Type: mailing address
Address:
Mail Stop 970
U.S. Geological Survey
12201 Sunrise Valley Drive
Summary of the lithostratigraphy and stratigraphic
correlations in piston cores from Northwind Ridge, Arctic
Ocean, from USCGC Polar Star, 1988.
Series_Information:
Series_Name: U.S. Geological Survey Open-File Report
Issue_Identification: 92-426
Publication_Information:
Publication_Place: Menlo Park, CA
Publisher: U.S. Geological Survey
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
Included in the attribute data for each sample is the fraction
of the original sample from which the specimens were extracted.
Logical_Consistency_Report:
Samples numbered 1 through 88 are 10cc samples obtained for
lithostatigraphy and biostratigraphy. Samples numbered 89 through
131 are cuttings obtained when paleomagnetics samples were taken
and are approximately 10cc.
The samples were washed in distilled water, wet sieved to three
size fractions; <62um, 62um - 2mm, and >2mm. The size fractions
were dried and weighed. The 62um - 2mm and the >2mm fractions were
combined after weighing. The >62um fraction was sieved at 150um
and counting splits of 300 - 350 planktic foraminifers were
obtained from the >150um fraction using a Carpco sample splitter.
In general, our taxonomic concepts follow Parker (1962, 1967).
Completeness_Report:
Planktic foraminifers were identified, sorted and glued to
standard 60 square micropaleontological slides. Benthic
foraminifers were also counted. All planktic foraminifers were
removed from samples containing insufficient specimens for a
counting split.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Although horizontal position of thes cores is given to the
nearest 0.01 minute of latitude and longitude, no
information is presented in OFR 91-346 or in OFR 92-426
indicating the magnitude of likely errors in the core
locations.
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report:
Core intervals sampled are indicated in the attribute data
to the nearest 0.1 cm, but there is no information in OFR
91-346 or OFR 92-426 concerning the fidelity of depth in
core to depth below the sea floor. The samples were taken
from piston cores; there is no indication that information
from trigger cores or box cores was included.
Lineage:
Process_Step:
Process_Description:
Samples numbered 1 through 88 are 10cc samples obtained
for lithostatigraphy and biostratigraphy. Samples
numbered 89 through 131 are cuttings obtained when
paleomagnetics samples were taken and are approximately
10cc. The samples were washed in distilled water, wet
sieved to three size fractions; <62um, 62um - 2mm,
and >2mm. The size fractions were dried and weighed.
The 62um - 2mm and the >2mm fractions were combined after
weighing. The >62um fraction was sieved at 150um and
counting splits of 300 - 350 planktic foraminifers were
obtained from the >150um fraction using a Carpco sample
splitter. Planktic foraminifers were identified, sorted
and glued to standard 60 square micropaleontological
slides. Benthic foraminifers were also counted. All
planktic foraminifers were removed from samples containing
insufficient specimens for a counting split.
Process_Date: 1988 - 1991
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Point
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: Entity point
Point_and_Vector_Object_Count: 1
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Geographic:
Latitude_Resolution: 0.001
Longitude_Resolution: 0.001
Geographic_Coordinate_Units: Decimal degrees
Vertical_Coordinate_System_Definition:
Depth_System_Definition:
Depth_Datum_Name: top of recovered core
Depth_Resolution: 0.005
Depth_Distance_Units: meters
Depth_Encoding_Method: Attribute values
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: data record
Entity_Type_Definition: All measurements reported from a core sample.
Attribute:
Attribute_Label: depth1
Attribute_Definition:
Depth in cm of the top of the sampled interval. For
samples 89 through 131 this value indicates instead the
midpoint of the sampled interval.
Attribute_Definition_Source:
Foley, K.M., and Poore, R.Z., 1993, Planktic foraminifer
census data from Northwind Ridge cores PI-88-AR P3, PI-88-
AR P7, and PI-88-AR P9, Arctic Ocean: U.S. Geological
Survey Open-File Report 93-218, 11p.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.0
Range_Domain_Maximum: 623.9
Attribute_Units_of_Measure: cm
Attribute_Measurement_Resolution: 0.1
Attribute:
Attribute_Label: depth2
Attribute_Definition:
Depth in cm of the bottom of the sampled interval. For
samples 89 through 131 this value is meaningless.
Attribute_Definition_Source:
Foley, K.M., and Poore, R.Z., 1993, Planktic foraminifer
census data from Northwind Ridge cores PI-88-AR P3, PI-88-
AR P7, and PI-88-AR P9, Arctic Ocean: U.S. Geological
Survey Open-File Report 93-218, 11p.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 2.0
Range_Domain_Maximum: 625.9
Attribute_Units_of_Measure: cm
Attribute_Measurement_Resolution: 0.1
Attribute:
Attribute_Label: wt<62um
Attribute_Definition:
Weight in grams of that part of the sample passing through
the 62um sieve.
Attribute_Definition_Source:
Foley, K.M., and Poore, R.Z., 1993, Planktic foraminifer
census data from Northwind Ridge cores PI-88-AR P3, PI-88-
AR P7, and PI-88-AR P9, Arctic Ocean: U.S. Geological
Survey Open-File Report 93-218, 11p.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 4.82
Range_Domain_Maximum: 23.71
Attribute_Units_of_Measure: grams
Attribute_Measurement_Resolution: 0.01
Attribute:
Attribute_Label: wt%<62um
Attribute_Definition:
Percentage of the total sample weight represented by the
material passing through the 62um sieve.
Attribute_Definition_Source:
Foley, K.M., and Poore, R.Z., 1993, Planktic foraminifer
census data from Northwind Ridge cores PI-88-AR P3, PI-88-
AR P7, and PI-88-AR P9, Arctic Ocean: U.S. Geological
Survey Open-File Report 93-218, 11p.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 34.9
Range_Domain_Maximum: 100
Attribute_Units_of_Measure: percent by weight
Attribute_Measurement_Resolution: 0.1
Attribute:
Attribute_Label: wt62um-2mm
Attribute_Definition:
Weight in grams of that part of the sample passing through
the 2mm sieve but retained on the 62um sieve.
Attribute_Definition_Source:
Foley, K.M., and Poore, R.Z., 1993, Planktic foraminifer
census data from Northwind Ridge cores PI-88-AR P3, PI-88-
AR P7, and PI-88-AR P9, Arctic Ocean: U.S. Geological
Survey Open-File Report 93-218, 11p.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 9
Attribute_Units_of_Measure: gram
Attribute_Measurement_Resolution: 0.01
Attribute:
Attribute_Label: wt%62um-2mm
Attribute_Definition:
Percentage of the total sample weight represented by the
material passing through the 2mm sieve but retained on the
62um sieve.
Attribute_Definition_Source:
Foley, K.M., and Poore, R.Z., 1993, Planktic foraminifer
census data from Northwind Ridge cores PI-88-AR P3, PI-88-
AR P7, and PI-88-AR P9, Arctic Ocean: U.S. Geological
Survey Open-File Report 93-218, 11p.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 65.1
Attribute_Units_of_Measure: percent by weight
Attribute_Measurement_Resolution: 0.1
Attribute:
Attribute_Label: wt>2mm
Attribute_Definition:
Weight in grams of that part of the sample retained on the
2mm sieve.
Attribute_Definition_Source:
Foley, K.M., and Poore, R.Z., 1993, Planktic foraminifer
census data from Northwind Ridge cores PI-88-AR P3, PI-88-
AR P7, and PI-88-AR P9, Arctic Ocean: U.S. Geological
Survey Open-File Report 93-218, 11p.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 9.25
Attribute_Units_of_Measure: gram
Attribute_Measurement_Resolution: 0.01
Attribute:
Attribute_Label: wt%>2mm
Attribute_Definition:
Percentage of the total sample weight represented by the
material retained on the 2mm sieve.
Attribute_Definition_Source:
Foley, K.M., and Poore, R.Z., 1993, Planktic foraminifer
census data from Northwind Ridge cores PI-88-AR P3, PI-88-
AR P7, and PI-88-AR P9, Arctic Ocean: U.S. Geological
Survey Open-File Report 93-218, 11p.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 46.6
Attribute_Units_of_Measure: percent by weight
Attribute_Measurement_Resolution: 0.1
Attribute:
Attribute_Label: total wt
Attribute_Definition: Total weight of the sample.
Attribute_Definition_Source:
Foley, K.M., and Poore, R.Z., 1993, Planktic foraminifer
census data from Northwind Ridge cores PI-88-AR P3, PI-88-
AR P7, and PI-88-AR P9, Arctic Ocean: U.S. Geological
Survey Open-File Report 93-218, 11p.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 5.04
Range_Domain_Maximum: 30.78
Attribute_Units_of_Measure: gram
Attribute_Measurement_Resolution: 0.01
Attribute:
Attribute_Label: 1/split
Attribute_Definition:
Proportion of the sample from which specimens were
counted; a value of 1 indicates all of the sample was used
to derive the counts, a value of 2 indicates half of the
sample was used, and so on.
Attribute_Definition_Source:
Foley, K.M., and Poore, R.Z., 1993, Planktic foraminifer
census data from Northwind Ridge cores PI-88-AR P3, PI-88-
AR P7, and PI-88-AR P9, Arctic Ocean: U.S. Geological
Survey Open-File Report 93-218, 11p.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 128
Attribute_Units_of_Measure: parts
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: spach
Attribute_Definition: Neogloboquadrina pachyderma (Ehrenberg) left coiling.
Attribute_Definition_Source:
Foley, K.M., and Poore, R.Z., 1993, Planktic foraminifer
census data from Northwind Ridge cores PI-88-AR P3, PI-88-
AR P7, and PI-88-AR P9, Arctic Ocean: U.S. Geological
Survey Open-File Report 93-218, 11p.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 1007
Attribute_Units_of_Measure: individuals
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: dpach
Attribute_Definition:
Neogloboquadrina pachyderma (Ehrenberg) right-coiling.
This category is restricted to specimens with 4 chambers
in the ultimate whorl. Right-coiling specimens that have
more than 4 chambers in the ultimate whorl are tabulated
as "dupac".
Attribute_Definition_Source:
Foley, K.M., and Poore, R.Z., 1993, Planktic foraminifer
census data from Northwind Ridge cores PI-88-AR P3, PI-88-
AR P7, and PI-88-AR P9, Arctic Ocean: U.S. Geological
Survey Open-File Report 93-218, 11p.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 20
Attribute_Units_of_Measure: individuals
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: dupac
Attribute_Definition:
This category is used for specimens of right-coiling
Neogloboquadrina with more than 4 chambers in the ultimate
whorl.
Attribute_Definition_Source:
Foley, K.M., and Poore, R.Z., 1993, Planktic foraminifer
census data from Northwind Ridge cores PI-88-AR P3, PI-88-
AR P7, and PI-88-AR P9, Arctic Ocean: U.S. Geological
Survey Open-File Report 93-218, 11p.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 23
Attribute_Units_of_Measure: individuals
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: other
Attribute_Definition:
Deformed planktic specimens and specimens resembling
Turborotalita quinqueloba.
Attribute_Definition_Source:
Foley, K.M., and Poore, R.Z., 1993, Planktic foraminifer
census data from Northwind Ridge cores PI-88-AR P3, PI-88-
AR P7, and PI-88-AR P9, Arctic Ocean: U.S. Geological
Survey Open-File Report 93-218, 11p.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 22
Attribute_Units_of_Measure: individuals
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: total plank
Attribute_Definition:
Total number of planktic foraminifers in the counting
split.
Attribute_Definition_Source:
Foley, K.M., and Poore, R.Z., 1993, Planktic foraminifer
census data from Northwind Ridge cores PI-88-AR P3, PI-88-
AR P7, and PI-88-AR P9, Arctic Ocean: U.S. Geological
Survey Open-File Report 93-218, 11p.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 1052
Attribute_Units_of_Measure: individuals
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: total benth
Attribute_Definition: Total number of benthic foraminifers in the counting split.
Attribute_Definition_Source:
Foley, K.M., and Poore, R.Z., 1993, Planktic foraminifer
census data from Northwind Ridge cores PI-88-AR P3, PI-88-
AR P7, and PI-88-AR P9, Arctic Ocean: U.S. Geological
Survey Open-File Report 93-218, 11p.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 191
Attribute_Units_of_Measure: individuals
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: plank/gram>150um
Attribute_Definition:
The total number of planktic foraminifers >150um in the
sample divided by the weight of the sample in grams.
Attribute_Definition_Source:
Foley, K.M., and Poore, R.Z., 1993, Planktic foraminifer
census data from Northwind Ridge cores PI-88-AR P3, PI-88-
AR P7, and PI-88-AR P9, Arctic Ocean: U.S. Geological
Survey Open-File Report 93-218, 11p.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 7320
Attribute_Units_of_Measure: individuals per gram
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: benth/gram>150um
Attribute_Definition:
The total number of benthic foraminifers >150um in the
sample divided by the weight of the sample in grams.
Attribute_Definition_Source:
Foley, K.M., and Poore, R.Z., 1993, Planktic foraminifer
census data from Northwind Ridge cores PI-88-AR P3, PI-88-
AR P7, and PI-88-AR P9, Arctic Ocean: U.S. Geological
Survey Open-File Report 93-218, 11p.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 336
Attribute_Units_of_Measure: individuals per gram
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: %dextral
Attribute_Definition:
The percentage of specimens of Neogloboquadrina pachyderma
in the sample that are dextral (i.e. right-coiling).
Attribute_Definition_Source:
Foley, K.M., and Poore, R.Z., 1993, Planktic foraminifer
census data from Northwind Ridge cores PI-88-AR P3, PI-88-
AR P7, and PI-88-AR P9, Arctic Ocean: U.S. Geological
Survey Open-File Report 93-218, 11p.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 10
Attribute_Units_of_Measure: percent of total number of N. pachyderma specimens.
Attribute_Measurement_Resolution: 0.01
Distribution_Information:
Distributor:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Peter N. Schweitzer
Contact_Address:
Address_Type: mailing address
Address:
Mail Stop 918 National Center
U.S. Geological Survey
12201 Sunrise Valley Drive
This report is preliminary and has not been reviewed for
conformity with U.S. Geological Survey editorial standards (or
with the North American Stratigraphic Code). Any use of trade,
product, or firm names is for descriptive purposes only and does
not imply endorsement by the U.S. Government.
Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
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