A Study of Marine Terrigenous Sediments from the Gulf of Mexico (Allan T. Mullins Thesis)

Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: Christopher J. Jenkins

Publication_Date: 2002

Title:

A Study of Marine Terrigenous Sediments from the Gulf of Mexico (Allan T. Mullins Thesis)

Geospatial_Data_Presentation_Form: document

Other_Citation_Details:

Geology Department, Forida State University, Tallahassee, FL 32306

Online_Linkage:

Description:

Abstract:

An area of 45 square miles was sampled south of St. George Island in the Gulf of Mexico with a total of 38 samples being obtained. This area has an undulatins bottom due to a series of ridges and troughs trending approximately east and west across it. Differences were found in the terrigenous sediments taken from the ridges when compared with those obtained from the troughs on either side of them. These sediments on the ridges had a smaller median grain size and better sorting than the material in the adjacent troughs or lows. The CaCO3 percentage was also lower in those locations. However, the terrigenous sediment on the ridges was not found to be statistically different from that found in the troughs for the area as a whole. Fourteen varieties of heavy minerals were identified in the area. The suite present is indicative of a high rank metamorphic source area. Two authigenic varieties were found. The data from the present area were compared statistically using the median test with the previously examined eastern area of Dog Island. This eastern area has an even profile typical of off-bar areas. The median grain size or the terrigenous sediments was found to be significantly different at the 5 percent level between the two areas with the eastern area having coarser material. Obvious differences between the two areas are the presence of heavy minerals in measureable amounts in the area off St. George Island as opposed to only a trace off Dog Island; and the presence of bed rock in the eastern area whereas none was found in the western area.

Purpose:

The purpose of this data layer is to create a digital version of the sedimentary characteristics published by Mullins (1959) for inclusion in the usSEABED data collection.

Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 1959

Currentness_Reference: publication date

Status:

Progress: Complete

Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -85.0635

East_Bounding_Coordinate: -84.9754

North_Bounding_Coordinate: 29.5992

South_Bounding_Coordinate: 29.4155

Keywords:

Theme:

Theme_Keyword_Thesaurus: General

Theme_Keyword: sediments

Theme_Keyword: sediment characteristics

Theme_Keyword: facies

Theme_Keyword: facies distributions

Place:

Place_Keyword_Thesaurus: General

Place_Keyword: Gulf of Mexico

Place_Keyword: Florida

Access_Constraints: None

Use_Constraints:

None except that acknowledgement must be made in publications and reports of (i) the original data source, and (ii) the data integration by USGS and dbSEABED project at the University of Colorado.

Point_of_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Chris Jenkins

Contact_Organization:

Institute of Arctic & Alpine Research (INSTAAR) University of Colorado at Boulder

Contact_Address:

Address_Type: mailing and physical address

Address: 1560 30th Street

Address: Campus Box 450

City: Boulder

State_or_Province: CO

Postal_Code: 80309-0450

Country: USA

Contact_Voice_Telephone: (303) 492-6387

Contact_Facsimile_Telephone: (303) 492-6388

Contact_Electronic_Mail_Address: chris.jenkins@colorado.edu

Browse_Graphic:

Browse_Graphic_File_Name: Mullins1959.jpg

Browse_Graphic_File_Description: Image showing geographic extent of data layer coverage

Data_Set_Credit:

Please review the cross reference information for the original data set credit to Mullins (1959), and Chris Jenkins for digitizing samples locations and entering the data from the source report.

Native_Data_Set_Environment:

Microsoft Windows 2000 Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 8.3.0.800

Cross_Reference:

Citation_Information:

Originator: Allan T. Mullins

Publication_Date: 1959

Title: A Study of Marine Terrigenous Sediments from the Gulf of Mexico

Edition: 1.0

Publication_Information:

Publication_Place: Tallahassee, Forida

Publisher: Forida State University

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report: All attributes were entered and checked in a consistent manner.

Logical_Consistency_Report:

No additional check for topological consistency were performed on this data.

Completeness_Report:

Sedimentary descriptions and locations are provided for 38 samples.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report: Navigational accuracy is unknown.

Lineage:

Process_Step:

Process_Description:

Digital data were hand formatted into dbSEABED data entry structure, then filtered and data-mined through dbSEABED software (version: db9_MNEx.bas)

Process_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Chris Jenkins

Contact_Organization:

Institute of Arctic & Alpine Research (INSTAAR) University of Colorado at Boulder

Contact_Address:

Address_Type: mailing and physical address

Address: 1560 30th Street

Address: Campus Box 450

City: Boulder

State_or_Province: CO

Postal_Code: 80309-0450

Country: USA

Contact_Voice_Telephone: (303) 492-6387

Contact_Facsimile_Telephone: (303) 492-6388

Contact_Electronic_Mail_Address: chris.jenkins@colorado.edu

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Vector

Point_and_Vector_Object_Information:

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: Entity point

Point_and_Vector_Object_Count: 38

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Geographic:

Latitude_Resolution: 0.0000

Longitude_Resolution: 0.0000

Geographic_Coordinate_Units: Decimal degrees

Geodetic_Model:

Horizontal_Datum_Name: North American Datum of 1927

Ellipsoid_Name: Clarke 1866

Semi-major_Axis: 6378206.400000

Denominator_of_Flattening_Ratio: 294.978698

Distribution_Information:

Resource_Description: Mullins, 1959

Distribution_Liability:

Although this data set has been used by the U.S. Geological Survey (USGS), no warranty, expressed or implied, is made by the USGS as to the accuracy of the data and/or related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of these data or related materials. Trade, firm, or product names and other references to non-USGS products and services are provided for information only and do not constitute endorsement or warranty, express or implied, by the USGS, USDOI, or U.S. Government, as to their suitability, content, usefulness, functioning, completeness, or accuracy.

Metadata_Reference_Information:

Metadata_Date: 20060322

Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey

Contact_Person: Brian J. Buczkowski

Contact_Position: Core Curator and Data Management Specialist

Contact_Address:

Address_Type: mailing and physical address

Address: 384 Woods Hole Road

City: Woods Hole

State_or_Province: MA

Postal_Code: 02543-1598

Country: USA

Contact_Voice_Telephone: (508) 548-8700 x2361

Contact_Facsimile_Telephone: (508) 457-2310

Contact_Electronic_Mail_Address: bbuczkowski@usgs.gov

Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998

Metadata_Time_Convention: local time

Metadata_Access_Constraints: None

Metadata_Use_Constraints: None

Metadata_Extensions:

Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>

Profile_Name: ESRI Metadata Profile