Citation:
Citation_Information:
Originator: U.S. Geological Survey
Publication_Date: 20030505
Title:
Bedrock Data from Western Cape Cod, Massachusetts (WELLSITE shapefile, Geographic, NAD27)
Edition: 1.0
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 03-221
Publication_Information:
Publication_Place: Woods Hole Coastal and Marine Science Center, Woods Hole, MA
Publisher: U.S. Geological Survey, Coastal and Marine Geology Program
Online_Linkage: https://doi.org/10.3133/ofr03221
Online_Linkage:
Online_Linkage:
Larger_Work_Citation:
Citation_Information:
Originator: B.W. Hallett
Originator: V.F. Paskevich
Originator: L.J. Poppe
Originator: S.G. Brand
Originator: D.S. Blackwood
Publication_Date: 2003
Title:
A Pictorial Survey of the Bedrock Beneath Western Cape Cod, Massachusetts
Edition: 1.0
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 03-221
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Other_Citation_Details: 1 CD-ROM
Online_Linkage: http://pubs.usgs.gov/of/2003/of03-221/
Description:
Abstract:
Cores collected from recent drilling in western Cape Cod, Massachusetts provide insight into the topography and petrology of the underlying bedrock. Cores from 64 drill sites spread over a approximately 140 km2 study area produced samples of granitoids (31), orthogneisses (20), basalts/diabases (4), amphibolites (3), felsic mylonites (2), and dolomitic rock (2).
Granitoid composition ranges from granite to tonalite and quartz diorite, but it is dominated by two-feldspar granites. Hydrothermal alteration is common in nearly all cores as evidenced by the secondary growth of chlorite and epidote. Granitoids resemble rocks of the Dedham and Fall River plutons (Wones and Goldsmith, 1991). Gneisses generally contain the mineral assemblage K-feldspar+plagioclase+quartz+/-biotite+/-
chlorite+/-muscovite+/-sphene+/-epidote+oxides. Amphibolites contain the assemblage hornblende+plagioclase+quartz+biotite+epidote+/-chlorite+/-sphen+/-K-feldspar+/-sericite+
oxides. Peak metamorphic grade based on mineral assemblages is estimated at lower amphibolite facies. X-ray powder diffraction of unmetamorphosed dolomitic cores shows presence of layered silicates (clays), plagioclase, and possible magnesite.
Contours of the bedrock surface show locally irregular topography suggesting erosion by glacial scour. Lithologic distribution mapping suggests a possible continuation of the New Bedford gneissic terrane that outcrops 25 km to the west. Dolomitic rocks may represent a lithified fault gauge material at the eastern edge of the gneissic zone. Basalts/diabases are interpreted to be post-metamorphic dikes associated with Mesozoic rifting.
Purpose:
The purpose of this data layer is to provide those interested in the composition and character of the bedrock beneath western Cape Cod with the ability to examine the well logs and sample descriptions in a geographic context.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2004
Currentness_Reference: publication date
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -70.615932
East_Bounding_Coordinate: -70.501960
North_Bounding_Coordinate: 41.667870
South_Bounding_Coordinate: 41.611070
Keywords:
Theme:
Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:709dc7ba-d758-4814-9825-7557704e1879
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: U.S. Geological Survey
Theme_Keyword: USGS
Theme_Keyword: Woods Hole Field Center
Theme_Keyword: CH2M Hill
Theme_Keyword: bedrock
Theme_Keyword: wells
Theme_Keyword: lithology
Theme_Keyword: Massachusetts Military Reservation
Theme_Keyword: Installation Restoration Program
Theme_Keyword: Jacobs Engineering
Theme_Keyword: MMR
Theme_Keyword: IRP
Theme_Keyword: granite
Theme_Keyword: granodiorite
Theme_Keyword: basalt
Theme_Keyword: quartz diorite
Theme_Keyword: quartz monzonite
Theme_Keyword: tonalite
Theme_Keyword: orthogneiss
Theme_Keyword: granitoid
Theme_Keyword: mylonite
Theme_Keyword: dolostone
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: environment
Theme_Keyword: geoscientificInformation
Theme_Keyword: location
Theme:
Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: geospatial datasets
Theme_Keyword: drilling and coring
Theme_Keyword: bedrock geologic units
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: Cape Cod
Place_Keyword: Bourne
Place_Keyword: Falmouth
Place_Keyword: Mashpee
Place_Keyword: Sandwich
Place_Keyword: Barnstable County
Place_Keyword: Massachusetts
Place_Keyword: southeast New England
Place_Keyword: U.S. eastcoast
Place_Keyword: northeast
Place_Keyword: New England
Place_Keyword: southeast New England
Place_Keyword: North America
Access_Constraints: None
Use_Constraints:
Public domain data from the U.S. government are freely redistributable with proper metadata and source attribution. The USGS must be referenced as the originator of this data set.
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Lawrence J. Poppe
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: U.S. Geological Survey
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: (508) 548-8700 x2314
Contact_Facsimile_Telephone: (508) 457-2310
Contact_Electronic_Mail_Address: lopppe@usgs.gov
Browse_Graphic:
Browse_Graphic_File_Name: wellsite
Browse_Graphic_File_Description:
Image showing the distribution of the wellsite locations in Western Cape Cod, Massachusetts.
Browse_Graphic_File_Type: GIF
Data_Set_Credit:
Jacobs Engineering for drilling the wells, S. Brand of CH2M Hill and the Air Force Center for Environmental Excellence for providing access to the well samples and logs, B. Hallett for the petrographic descriptions, and L. Poppe for creating the ArcView shapefile.
Native_Data_Set_Environment:
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.1.0.722