CERCTP 76_2: USACE ICONS Cores, Long Island South Shore

Metadata:

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

Identification_Information:

Citation:

Citation_Information:

Originator: Jamey M. Reid

Publication_Date: 2005

Title: CERCTP 76_2: USACE ICONS Cores, Long Island South Shore

Edition: 1.0

Geospatial_Data_Presentation_Form: document

Series_Information:

Series_Name: Data Series

Publication_Information:

Publication_Place: Woods Hole Science Center, Woods Hole, MA

Publisher: U.S. Geological Survey, Coastal and Marine Geology Program

Online_Linkage:

Description:

Abstract:

About 800 square miles of the Atlantic Inner Continental Shelf off Long Island, New York, were studied by CERC to obtain information on the sea floor morphology, sediment distribution, and shallow subbottom stratigraphy and structure. This information is used for delineating sand and gravel resources and deciphering shelf geologic history. Basic survey data by CERC consist of 735 miles of high-resolution continuous seismic profiles and 70 vibratory cores; additional data were available from 82 sediment cores and 225 miles of seismic records. Data coverage extends from Atlantic Beach east to Montauk and Gardiners Bay; and from the shoreface seaward about 10 miles to water depths of 105 feet. Three primary acoustic horizons are evident on the seismic profiles and have been identified by correlation with cores, land borings, and surface exposures of the reflectors. Granitic bedrock is the oldest and deepest horizon underlying Long Island, but its recognition on the seismic records, due to limited subbotom penetration, is confined to northern Gardiners Bay. The bedrock surface slopes southeast and exhibits considerable relief where glacial ice has enlarged pre-Pleistocene drainage channels. Upper Cretaceous and Tertiary semiconsolidated clastic sediments overlie the bedrock and dip and thicken to the southeast. The surfaces of these strata, which are present throughout the study area and project north under Long Island, are the second major horizon. The third seismic horizon is a Pleistocene erosion surface cut by fluvial and glacial agents into the older rock units. Depth of this surface varies from -50 to -300 feet MSL off the western and eastern Long Island Shelf to sea floor outcropping in parts of the central Long Island inner shelf. Pleistocene detritus consists primarily of blanketlike deposits of outwash sand and gravel; however, radiocarbon dates show that Holocene - age barrier - lagoonal sequences and estuarine sediments cover parts of the Long Island Shelf. Surficial sediments on the inner shelf are primarily fine to medium quartz sand with secondary occurrences of coarse sand and pea gravel on the Atlantic shelf and silt-clay mixtures in the Gardiners Bay region. The granular facies are relict outwash detritus, carried onto the shelf by ancient rivers and washed and sorted by marine processes since the Holocene rise of sea level. Fine-grained sediments on the shelf originated in early Holocene back-barrier or lacustrine environments; however, those in Gardiners Bay are estuarine or lacustrine deposits from Pleistocene lakes which occupied that region. Glauconitic sands, restricted to a zone off Fire Island Inlet, appear to be residual from the underlying Monmouth Group which, along with other Cretaceous strata, form a cuesta where strata are truncated by the sea floor. Numerous major buried ancestral drainage channels transect Long Island mainland in a north-shore orientation and continue south across the shelf. Thalweg depths of the channels range from -100 to -550 feet MSL and channel widths are often several miles. Many channels on the north shore of Long Island underlie reentrant bays and most were significantly enlarged by Pleistocene glacial ice and later filled with sediment. Much of the surficial sand on the inner shelf is suitable as fill for beach restoration, except for that of the shoreface region (0 to -30 feet MSL) which contains fine sand and that of major parts of Gardiners Bay which contain organic-rich silt and clay. Topographic highs on the sea floor in the form of linear shoals, and broad deltalike platforms in eastern Long Island appear most suitable for sand recovery. The sea floor in most potential borrow areas is flat and sand occurs as blanket deposits. Potential sand reserves within about 12 feet of the sea floor in the region are estimated to be more than 8 billion cubic yards.

Purpose:

The purpose of this datalyer is to release a digital version of the coring data from a U.S. Army Corps of Engineers (USACOE) Inner Continental Shelf (ICONS) program project off Long Island, New York

Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 1976

Currentness_Reference: publication date

Status:

Progress: Complete

Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -73.660630

East_Bounding_Coordinate: -71.845000

North_Bounding_Coordinate: 41.167850

South_Bounding_Coordinate: 40.440410

Keywords:

Theme:

Theme_Keyword_Thesaurus: General

Theme_Keyword: U.S. Geological Survey

Theme_Keyword: USGS

Theme_Keyword: Coastal and Marine Geology

Theme_Keyword: Coastal and Marine Geology Program

Theme_Keyword: Woods Hole Science Center

Theme_Keyword: USACE

Theme_Keyword: U.S. Army Corps of Engineers

Theme_Keyword: Coastal Engineering and Research Center

Theme_Keyword: cores

Theme_Keyword: ICONS

Theme_Keyword: vibracores

Theme_Keyword: navigation

Theme_Keyword: descriptions

Theme_Keyword: grain size

Theme_Keyword: sediment

Theme_Keyword: gravel

Theme_Keyword: sand

Theme_Keyword: silt

Theme_Keyword: clay

Theme_Keyword: Marine Aggregates Resources and Processes

Theme_Keyword: usSEABED

Theme_Keyword: dbSEABED

Place:

Place_Keyword_Thesaurus: General

Place_Keyword: New York

Place_Keyword: Long Island south shore

Place_Keyword: Long Island

Place_Keyword: Mid-Atlantic

Place_Keyword: continental shelf

Place_Keyword: Atlantic

Place_Keyword: NY Bight

Place_Keyword: Nassau County

Place_Keyword: Suffolk County

Place_Keyword: Tobay Beach

Place_Keyword: Cedar Beach

Access_Constraints: None

Use_Constraints: None

Point_of_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Jeff Williams

Contact_Organization: U.S. Geological Survey

Contact_Position: Geologist

Contact_Address:

Address_Type: mailing and physical address

Address: 384 Woods Hole Rd.

City: Woods Hole

State_or_Province: MA

Postal_Code: 02543-1598

Contact_Voice_Telephone: (508) 548-8700 x2383

Contact_Facsimile_Telephone: (508) 457-2310

Contact_Electronic_Mail_Address: jwilliams@usgs.gov

Browse_Graphic:

Browse_Graphic_File_Name: tp762.jpg

Browse_Graphic_File_Description:

Image map showing extent and distribution of data layer coverage

Browse_Graphic_File_Type: JPEG

Data_Set_Credit:

Pleae review the cross reference information for the original data set credit to Williams (1976). Jamey Reid for entering the data for 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: S. Jeffress Williams

Publication_Date: 1976

Title:

Geomorphology, shallow subbottom structure, and sediments of the Atlantic inner continental shelf off Long Island, New York

Edition: 1.0

Geospatial_Data_Presentation_Form: document

Series_Information:

Series_Name: Technical Paper

Issue_Identification: No. 76_2

Publication_Information:

Publication_Place: Fort Belvoir, VA

Publisher: USACOE, Coastal Engineering and Research Center

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

All attributes were entered and checked by the compilers in a consistent manner.

Logical_Consistency_Report:

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

Completeness_Report:

Core locations and descriptions are provided for 152 vibracores with unique field ids; grain size statistics are provided for 267 analyses.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

Navigation was by LORAN C. Typical nonrepetitive accuracy off Long Island is about +/- 200 meters.

Quantitative_Horizontal_Positional_Accuracy_Assessment:

Horizontal_Positional_Accuracy_Value: 200

Vertical_Positional_Accuracy:

Vertical_Positional_Accuracy_Report: Tides are less than 2 meters.

Quantitative_Vertical_Positional_Accuracy_Assessment:

Vertical_Positional_Accuracy_Value: 2

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Originator: S. Jeffress Williams

Publication_Date: 1976

Title:

Geomorphology, Shallow Subbottom Structure, and Sediments of the Atlantic Inner Continental Shelf off Long Island, New York

Edition: 1.0

Geospatial_Data_Presentation_Form: document

Series_Information:

Series_Name: Technical Paper

Issue_Identification: No. 76-2

Publication_Information:

Publication_Place: Fort Belvoir, VA

Publisher: USACOE Coastal Engineering and Research Center

Type_of_Source_Media: paper

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 1976

Source_Currentness_Reference: publication date

Source_Citation_Abbreviation: USACOE Technical Paper 76-2

Source_Contribution:

Sample identifiers, navigation, core descriptions, and grain-size statistics were hand-entered from report TP76-2 to create an Excel spreadsheet file.

Process_Step:

Process_Description:

The source information was entered into an Excel spreadsheet. Additional fields were added for project identification purposes. The table information was exported and saved as an ASCII text file.

Source_Used_Citation_Abbreviation: tp76_2.xls

Process_Date: 20020618

Source_Produced_Citation_Abbreviation: tp76_2.txt

Process_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Jamey Reid

Contact_Organization: U.S. Geological Survey

Contact_Position: IT Specialist (Data Management)

Contact_Address:

Address_Type: mailing and physical address

Address: 384 Woods Hole Rd.

City: Woods Hole

State_or_Province: MA

Postal_Code: 02543-1598

Contact_Voice_Telephone: (508) 548-8700 x2204

Contact_Facsimile_Telephone: (508) 457-2310

Contact_Electronic_Mail_Address: jreid@usgs.gov

Process_Step:

Process_Description:

Digital data were hand formatted into dbSEABED data entry structure, then filtered and data-mined through dbSEABED software (version: db9_MNEs.bas)

Source_Used_Citation_Abbreviation: tp76_2.txt

Process_Date: 20020628

Process_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Jamey Reid

Contact_Organization: U.S. Geological Survey

Contact_Position: IT Specialist (Data Management)

Contact_Address:

Address_Type: mailing and physical address

Address: 384 Woods Hole Rd.

City: Woods Hole

State_or_Province: MA

Postal_Code: 02543-1598

Contact_Voice_Telephone: (508) 548-8700 x2204

Contact_Facsimile_Telephone: (508) 457-2310

Contact_Electronic_Mail_Address: jreid@usgs.gov

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: 131

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Geographic:

Latitude_Resolution: 0.00001

Longitude_Resolution: 0.0001

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

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: tp76_2.dbf

Entity_Type_Definition: Shapefile Attribute Table

Entity_Type_Definition_Source: ESRI

Attribute:

Attribute_Label: FID

Attribute_Definition: Internal feature number.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain:

Sequential unique whole numbers that are automatically generated.

Attribute:

Attribute_Label: Shape

Attribute_Definition: Feature geometry.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain: Coordinates defining the features.

Attribute:

Attribute_Label: REFERENCE_

Attribute:

Attribute_Label: LATITUDE

Attribute:

Attribute_Label: LONGITUDE

Overview_Description:

Entity_and_Attribute_Overview:

Sample identifiers, navigation, core descriptions, and grain size statistics from the USACOE ICONS program project off the south shore of Long Island.

Distribution_Information:

Distributor:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Jamey Reid

Contact_Organization: U.S. Geological Survey

Contact_Position: IT Specialist (Data Management)

Contact_Address:

Address_Type: mailing and physical address

Address: 384 Woods Hole Rd.

City: Woods Hole

State_or_Province: MA

Postal_Code: 02543-1598

Contact_Voice_Telephone: (508) 548-8700 x2204

Contact_Facsimile_Telephone: (508) 457-2310

Contact_Electronic_Mail_Address: jreid@usgs.gov

Resource_Description: Marine Aggregates Resources and Processes: tp76_2.shp

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

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Format_Name: ArcView shapefile

Format_Version_Number: 3.2

Format_Specification: ESRI point shapefile

File_Decompression_Technique: no compression applied

Transfer_Size: 0.142

Fees: None

Technical_Prerequisites: The original data is available in ASCII text format

Available_Time_Period:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 2002

Metadata_Reference_Information:

Metadata_Date: 20050420

Metadata_Review_Date: 20050503

Metadata_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Jamey Reid

Contact_Organization: U.S. Geological Survey

Contact_Position: IT Specialist (Data Management)

Contact_Address:

Address_Type: mailing and physical address

Address: 384 Woods Hole Rd.

City: Woods Hole

State_or_Province: MA

Postal_Code: 02543-1598

Contact_Voice_Telephone: (508) 548-8700 x2204

Contact_Facsimile_Telephone: (508) 457-2310

Contact_Electronic_Mail_Address: jreid@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

Metadata_Extensions:

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

Profile_Name: ESRI Metadata Profile