Metadata: Identification_Information: Citation: Citation_Information: Originator: William C. Burton Originator: Gregory J. Walsh Originator: Thomas R. Armstrong Publication_Date: 2000 Title: Bedrock geologic map of the Hubbard Brook Experimental Forest, Grafton County, New Hampshire Edition: 1.0 Geospatial_Data_Presentation_Form: map Series_Information: Series_Name: U.S. Geological Survey Open-File Report Issue_Identification: 00-45 Publication_Information: Publication_Place: Reston, Virginia Publisher: U.S. Geological Survey Online_Linkage: http://pubs.usgs.gov/of/2000/of00-045/ Description: Abstract: The bedrock geology of the Hubbard Brook Experimental Forest, Grafton County, New Hampshire is described in this report of new field investigation. The database includes contacts of bedrock geologic units, faults, folds, and other structural geologic information, as well as the base maps on which the mapped geological features are registered. This report supersedes Barton (1997). Purpose: Our mapping study was funded by the USGS Toxic Substances Hydrology Program and was undertaken for the following reasons: 1) to ascertain whether the area might have a greater number of mappable lithologic units than shown on Barton's (1997) map, and to verify the stratigraphically higher formations shown on the map; 2) to have sufficient data to draw geologic cross- sections through the Mirror Lake research site; 3) to gather more data on brittle fracture distribution and orientation; and 4) to assess the degree to which the subsurface lithologies, ductile structures, and fractures observed at the two Mirror Lake well fields correlate with the geology of the surrounding region. Supplemental_Information: Data were originally collected in UTM coordinates, zone 19, NAD 1927, and reprojected to geographic coordinates (Lat/Long), NAD 1983. The database is accompanied by two large format color maps, a readme.txt file, and a explanatory pamphlet. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Gregory J Walsh Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: mailing address Address: P.O. Box 628 City: Montpelier State_or_Province: VT Postal_Code: 05602 Country: USA Contact_Voice_Telephone: 802-828-4514 Contact_Electronic_Mail_Address: gwalsh@usgs.gov Browse_Graphic: Browse_Graphic_File_Name: http://pubs.usgs.gov/of/2000/of00-045/0045p1p.gif Browse_Graphic_File_Description: Reduced-size image showing the general layout of map sheet 1. 864x485 pixels, 24-bit color. Browse_Graphic_File_Type: GIF Browse_Graphic: Browse_Graphic_File_Name: http://pubs.usgs.gov/of/2000/of00-045/0045p2p.gif Browse_Graphic_File_Description: Reduced-size image showing the general layout of map sheet 2. 864x537 pixels, 24-bit color. Browse_Graphic_File_Type: GIF Data_Set_Structure: Data_Set_Part: Part_Name: Geologic map data Part_Type: Arc/Info coverages Part_Description: These coverages provide the scientific content of the mapped data. Data_Set_Part: Part_Name: CONTX.E00 Part_Type: Arc/Info coverage (export file) Part_Description: Polygon coverage for the contacts of geologic map units Data_Set_Part: Part_Name: FAULTS.E00 Part_Type: Arc/Info coverage (export file) Part_Description: Line coverage of geologic faults Data_Set_Part: Part_Name: LINES.E00 Part_Type: Arc/Info coverage (export file) Part_Description: Line coverage for axial traces, isograds, and cross-section lines Data_Set_Part: Part_Name: NEAT.E00 Part_Type: Arc/Info coverage (export file) Part_Description: Polygon coverage for neatline boundary Data_Set_Part: Part_Name: OUTCX.E00 Part_Type: Arc/Info coverage (export file) Part_Description: Polygon coverage for outcrops Data_Set_Part: Part_Name: POINT.E00 Part_Type: Arc/Info coverage (export file) Part_Description: Point coverage for all structural data (original data set) Data_Set_Part: Part_Name: STRUX.E00 Part_Type: Arc/Info coverage (export file) Part_Description: Point coverage for structure data shown on Plate 1 (used for cartography) Data_Set_Part: Part_Name: Base map Part_Type: Arc/Info coverages Part_Description: These coverages provide the base map to which the geologic information is geographically registered. Data_Set_Part: Part_Name: BOUNDS.E00 Part_Type: Arc/Info coverage (export file) Part_Description: Polygon coverage of political boundary of the Hubbard Brook Experimental Forest Data_Set_Part: Part_Name: HYDRO.E00 Part_Type: Arc/Info coverage (export file) Part_Description: Line coverage of surface water hydrography Data_Set_Part: Part_Name: ROADS.E00 Part_Type: Arc/Info coverage (export file) Part_Description: Line coverage of roads. Data_Set_Part: Part_Name: TOPO.E00 Part_Type: Arc/Info coverage (export file) Part_Description: Line coverage for hypsography. Elevations are attributed. Ten foot contour interval. Data_Set_Part: Part_Name: WELLS.E00 Part_Type: Arc/Info coverage (export file) Part_Description: Point coverage of groundwater wells. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 1998 Ending_Date: 2000 Currentness_Reference: publication date Status: Progress: Complete Maintenance_and_Update_Frequency: None Planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -71.875 East_Bounding_Coordinate: -71.625 North_Bounding_Coordinate: 44.000 South_Bounding_Coordinate: 43.875 Keywords: Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: geology Theme_Keyword: geologic maps Theme_Keyword: geologic structure Theme_Keyword: bedrock geologic units Theme_Keyword: geospatial datasets Theme: Theme_Keyword_Thesaurus: none Theme_Keyword: New Hampshire Theme_Keyword: Grafton Theme_Keyword: Hubbard Brook Theme_Keyword: geologic Theme_Keyword: geology Theme_Keyword: bedrock Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Categories Theme_Keyword: geoscientificInformation Place: Place_Keyword_Thesaurus: Augmented FIPS 10-4 and FIPS 6-4 Place_Keyword: f33009 = Grafton Access_Constraints: none Use_Constraints: Although all data released in this report have been used by the USGS, no warranty, expressed or implied, is made by the USGS as to the accuracy of the data and related materials and (or) the functioning of the software. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Data_Quality_Information: Logical_Consistency_Report: Polygon and chain-node topology present. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: Barton, C.C. Publication_Date: 1997 Title: Bedrock geologic map of Hubbard Brook Experimental Forest and maps of fractures and geology in roadcuts along Interstate 93, Grafton County, New Hampshire Series_Information: Series_Name: U.S. Geological Survey Miscellaneous Investigations Series Map Issue_Identification: I-2562 Publication_Information: Publication_Place: Reston, Virginia Publisher: U.S. Geological Survey Source_Scale_Denominator: 12000 Type_of_Source_Media: mylar Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1997 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Barton (1997) Source_Contribution: Provided base map data. Used to produce polygon coverage of political boundary of the Hubbard Brook Experimental Forest, For line coverage of surface water hydrography (hydro.e00) Some stream locations have been changed slightly from Barton (1997) as the result of remapping using GPS with the Federal precise positioning service. For line coverage of roads (roads.e00), data were modified from Barton (1997) and road coverages for the Mt. Kineo and Woodstock 7.5-minute quadrangles obtained from the New Hampshire GRANIT system. For line coverage for hypsography (topo.e00) data were modified from Barton (1997). Modifications include corrections to elevation attributes and combined with original unpublished data from U.S. Forest Service map, 1956. Digitized by Cornell Laboratory for Environmental Applications of Remote Sensing (CLEARS), Center for the Environment, Cornell University, Ithaca, New York. For point coverage of groundwater wells (wells.e00), some wells have been added to the dataset from Barton (1997). The well locations were obtained by GPS. Process_Step: Process_Description: Geology mapped by Burton, Walsh, and Armstrong in the summer and fall of 1998 and the summer of 1999 at a scale of 1:10,000. Locational information was provided by Rockwell PLGR+96 GPS receivers using the Federal precise positioning service. The line and polygon data were compiled on a mylar and scanned at 400 dpi on an Anatech Eagle 4080T scanner. The raster files (TIF) were converted to vector files (DXF)using GTX OSR version 2.0 raster-to-vector conversion software. The vector files were imported to Arc/Info version 7.2.1. Point data were collected with GPS and hand-held 3COM Palm Pilot III PDA computers. Data from the PDAs were combined in Microsoft Access, and then imported as ASCII text files and DBASE IV (dbf) files into Arc/Info. Process_Date: 1998 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 SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Complete chain SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Geographic_Coordinate_Units: decimal degrees Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1983 Ellipsoid_Name: Geodetic Reference System 80 Semi-major_Axis: 6378137 Denominator_of_Flattening_Ratio: 298.257 Entity_and_Attribute_Information: Overview_Description: Entity_and_Attribute_Overview: >The geologic unit polygons in the CONTX coverage >was filled with colors from the colornames.shd shadeset in >Arc/Info. A lookup table was created in Arc/Info to fill the >polygons. The lookup table contains the items CODE and SYMBOL. >Here is the content of the lookup table: >Record CODE SYMBOL > 1 Dg 110 > 2 Dkg 113 > 3 Dp 119 > 4 Sp 19 > 5 Spp 60 > 6 Srb 95 > 7 Srcs 47 > 8 Srfg 93 > 9 Srg 96 > 10 Srgt 101 > 11 Srlg 49 > 12 Srq 84 > 13 Srr 79 > 14 Srrt 81 > 15 Srs 85 > >The following is a brief description of the ARC/INFO coverages. >GEOLOGIC COVERAGES: >CONTX coverage: > Item CODE in CONTX.PAT contains the map unit designators. > (Srb, Dkg, etc.) > Item LBLTXT in CONTX.PAT is used for selective plotting of code > labels; valid entry is 'n' or item is left blank. > Item TYPE is a general category of rock type: > m=metamorphic and p=plutonic > Item LINTYPE in CONTX.AAT is used for plotting different line types. > Valid entries are "concealed" where contacts are under water, > or item is left blank. > Concealed plotted as dotted line. > Blank plotted as solid line. > Look-up table CONTX.LUT contains the following items: > CODE = map unit designator > AGE_SORT = a relative number used to sort the units by age > FORMATION = the formation name > AGE = geologic age of the map unit > MAP_UNIT = simplified description of rock type(s) > (Complete description is in the accompanying text) > Lithology attribute table CONTX.LITH contains the following items: > CODE = map unit designator > SURF_BED = surficial or bedrock unit > LITHPRI = primary lithology in the map unit > LITHSEC = secondary lithology in the map unit > FORM = formation name > ROCKCLASS = rock type > AGE = geologic age of the map unit > FOSSIL > COLOR > MINPRI = most characteristic minerals > MINSEC = additional common minerals > MINOTH = accessory minerals > CONTUP > CONTLOW > FOLPRI = dominant generation of foliation in the rock > FOLSEC = subordinate generation of foliation in the rock > RMPM = regional prograde-metamorphic minerals > RMRM = regional retrograde-metamorphic minerals > DEFORMAGE = age of deformation > After importing the CONTX.E00 file you will find the look-up table > and the lithology attribute table in the INFO directory. If you are > using ArcView you can add the tables to the project by navigating to > the INFO directory, specifying the INFO file type, and selecting the > desired table. If you are using Arc/Info you can access the data in > the two tables using either the JOINITEM or RELATE operations and the > INFO item CODE. > >Structural geology point coverages POINT and STRUX: >Coverage POINT contains all of the structural data points and the >points in the database are located within the polygons in the outcrop >coverage -- the point locations are the original mapped locations. >Coverages STRUX contains structural data used for cartography on >Plate 1. The locations of the points in STRUX have been moved from >the original locations in POINT for plotting purposes only. >Any spatial analysis should use the POINT coverage data. >The STRUX coverage contains annotation for dip and plunge values. >The annotation is not present in the POINT coverage. >The PAT files for the point coverages contain the following >user-defined items: > >ITEM NAME >STATION number of field station >POSFMT position format from PLGR+96 GPS unit >ZONE UTM zone from PLGR+96 GPS unit >HDATUM horizontal datum from PLGR+96 GPS unit >HRZERR horizontal error from PLGR+96 GPS unit >ELEV elevation from PLGR+96 GPS unit >VDATUM vertical datum from PLGR+96 GPS unit >ELEVUNIT elevation unit from PLGR+96 GPS unit >Note on HRZERR -- > The database includes the horizontal accuracy of point > features as measured and recorded by the PLGR+96 GPS unit. > The stated accuracy of the PLGR+96 is +/- 16 meters. >Note on POSFMT through ELEVUNIT -- > These fields are recorded by the PLGR+96 GPS unit. In the > PAT files, some points do not have entries in these fields. > These points have been located without the use of GPS. >The following items are described in more detail below: >TYPE >SUB_TYPE >STRIKE units in degrees >DIP units in degrees >DIPDIR units in degrees >REL_AGE >SYMBOL >SYMBOL_ANG units in degrees >ROTATION >SPACING units in meters >WIDTH units in meters >APERTURE units in meters >MIN1 >MIN2 >MIN3 >CODE relate item for dikes, same as code in CONTX.PAT and LUT >TOPOFEAT >NO_MSMT number of multiple measurements for some brittle features > >Here is the detailed explanation of some of the items: > DIP = dip value (planar data) or plunge value (linear data) > STRIKE = measured from north in right-hand rule (planar data) > DIPDIR = Direction of dip (planar data) or trend (linear data) > measured from north >For STRIKE and DIPDIR: > 0 > North = 0 | > East = 90 270 -----|----- 90 > South = 180 | > West = 270 180 > >SYMBOL_ANG = refers to a standard cartesian angle measured > from EAST: > 90 > North = 90 | > East = 0 180 -----|----- 0 > South = 270 | > West = 180 270 > > SYMBOL_ANG is used for symbol rotation. > In ARC/INFO calculate pseudo item $angle = symbol_ang > Planar symbols with symbol_ang = 0 look like this: > __________ > \/ > Linear symbols with symbol_ang = 0 look like this: > -----> >SYMBOL refers to a pattern number in GEOLOGY.MRK. >ROTATION refers to the rotation sense of minor folds as viewed >down plunge or offset on minor faults. Valid entries are: > clockwise (right-lateral) = cw > counterclockwise (left-lateral) = cc >REL_AGE refers to the relative age of fabrics. >Valid entries are: n-1, n, n+1, n+2, etc. >TYPE refers to the general type of geologic structure. >Valid entries are: planar, linear, or other >SUB_TYPE refers to the specific geologic structure. >Valid entries used in this report arranged by TYPE: >Record CASE# FREQUENCY TYPE SUB_TYPE > 1 1 4 linear elongation > 2 2 76 linear fold axis > 3 3 14 linear glacial grooves > 4 4 6 linear intersection lineation > 5 5 5 linear mineral lineation > 6 6 1 linear refolded fold axis > 7 7 13 linear slickensides > 8 8 1 other spring > 9 9 79 planar axial surface > 10 10 28 planar bedding > 11 11 22 planar cleavage > 12 12 11 planar deformed schistosity > 13 13 76 planar dike > 14 14 2 planar fault > 15 15 22 planar foliation > 16 16 4 planar graded bedding > 17 17 17 planar igneous flow foliation > 18 18 1579 planar joint > 19 19 17 planar joint set > 20 20 24 planar joint zone > 21 21 76 planar layer parallel schistosity > 22 22 3 planar mylonite > 23 23 13 planar normal fault > 24 24 4 planar overturned bedding > 25 25 1 planar refolded axial surface > 26 26 1 planar reverse fault > 27 27 599 planar schistosity > 28 28 24 planar vein >The following are also used in the POINT coverage: >SPACING spacing of joints in joint sets in meters >WIDTH width of joint zone or thickness of dike in meters >APERTURE aperture of joint openings in meters >The following are used in the POINT coverage to describe minerals >on joint surfaces and in veins: >MIN1 primary mineral >MIN2 secondary mineral >MIN3 tertiary mineral >The following values are used in the report, some were modified >after Kretz (1983): >ank ankerite >dol dolomite >hem hematite >lm limonite >ms muscovite >pyl pyrolusite >qtz quartz >sil sillimanite >sul sulfides >tur tourmaline >Kretz, R., 1983, Symbols for rock-forming minerals: American >Mineralogist, v. 68, nos. 1-2, p. 277-279. > >TOPOFEAT topographic feature parallel to geologic structure >Values used in this report include: >cliff >stream >joint face > >Line coverage FAULT contains the following item: > TYPE = type of fault (normal, reverse, thrust, etc.) > >Line coverage LINES contains the following item: > TYPE = type of geologic line (axial traces, folds, isograds, cross-section lines, etc.) > >Polygon coverage NEAT represents the neat line boundary of the Hubbard Brook Experimental Forest project area > >Polygon coverage OUTCX represents the location of bedrock outcrops within the Hubbard Brook Experimental Forest project area > >BASE MAP COVERAGES: >Polygon coverage BOUNDS represents the political boundary of the Hubbard Brook Experimental Forest > >Line and polygon coverage HYDRO represents the surface water hydrography within the Hubbard Brook Experimental Forest > >Line coverage ROADS contains the following items: > GRANITID = GRANIT-assigned feature number > CLASS = GRANIT-assigned feature number > >Line coverage TOPO contains the following items: > ELEV = elevation in feet above mean sea level > CI = contour interval (in feet) used for plotting > SYMBOL = line symbol used for plotting > >Point coverage WELLS contains the following items: > ROCKTYPE = Lower Rangeley (lr), Upper Rangeley (ur), and Concord Granite (cg) > SYMB = symbol value used for rplotting > PTYPE = point type (well) Entity_and_Attribute_Detail_Citation: http://pubs.usgs.gov/of/2000/of00-045/of0045pm.pdf Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Position: Greg Walsh Contact_Address: Address_Type: mailing and physical address Address: 87 State Street, Room 324 City: Montpelier State_or_Province: Vermont Postal_Code: 05602 Country: U.S.A. Contact_Voice_Telephone: (802) 828-4528 Contact_Facsimile_Telephone: (802) 828-4465 Contact_Electronic_Mail_Address: gwalsh@usgs.gov Hours_of_Service: Monday - Friday 9:00 - 5:00 EST Resource_Description: USGS Open-File Report 00-45 Distribution_Liability: These data were prepared by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, make any warranty, expressed or implied, or assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product or process disclosed in this report, and represents that its use would not infringe privately owned rights. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of this data or related materials. Reference therein to any specific commercial product, process, or related service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: ARCE Format_Version_Number: 7.2.1 Format_Information_Content: Geologic contacts and structural features, base map data, along with symbols and markers for use in Arc/Info File_Decompression_Technique: gzip and tar Transfer_Size: 5.2 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://pubs.usgs.gov/of/2000/of00-045/of0045.tar.gz Fees: none Metadata_Reference_Information: Metadata_Date: 20160613 Metadata_Review_Date: 20010330 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Position: Greg Walsh Contact_Address: Address_Type: mailing and physical address Address: 87 State Street, Room 324 City: Montpelier State_or_Province: Vermont Postal_Code: 05602 Country: U.S.A. Contact_Voice_Telephone: (802) 828-4528 Contact_Facsimile_Telephone: (802) 828-4465 Contact_Electronic_Mail_Address: gwalsh@usgs.gov Hours_of_Service: Monday - Friday 9:00 - 5:00 EST Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Extensions: Online_Linkage: http://geology.usgs.gov/tools/metadata/tools/ext/parts.ext