U.S. Geological Survey2007 1.0vector digital dataOpen-File Report2006-1195 Woods Hole Science Center, Woods Hole, MAU.S. Geological Survey, Coastal and Marine Geology Programhttp://pubs.usgs.gov/of/2006/1195/data/usseabed/la_ext.zip http://pubs.usgs.gov/of/2006/1195/htmldocs/data_catalog.htm S.J. Williams M.A. Arsenault B.J. Buczkowski J.A. Reid J.G. Flocks M.A. Kulp 2007 1.0Open-File Report2006-1195Woods Hole Science Center, Woods Hole, MAU.S. Geological Survey, Coastal and Marine Geology Programhttp://pubs.usgs.gov/of/2006/1195/S. Penlandla_extThis data layer is a point coverage of known sediment samplings, inspections and probings from the usSEABED data collection and integrated using the software system dbSEABED. This data layer represents the extracted (EXT) output of the dbSEABED mining software. It contains data items which were simply extracted from the data resources through data mining. The EXT data is usually based on instrumental analyses (probe or laboratory) but may apply to just a subsample of the sediment (eg. no large shells).To build a digital mapping of the character of the seabed on regional, national and global scales. These data are intended for science researchers, students, policy makers, and the general public. The data can be used with geographic information systems (GIS) software to display geologic and oceanographic information.This data layer is a subset of the original usSEABED Gulf Coast data release version 1.0, and is geographically clipped to the Louisiana geographical region.en2007publication datePlannedAs needed-94.399440-88.20200030.64300026.405000-94.399440-88.20200026.40500030.643000GeneralanalysesCMGPCoastal and Marine Geology ProgramdbSEABEDdescriptionsgeologygrain sizeMarine Aggregates Resources and Processesseabedseafloorsediment datatextureU.S. Geological SurveyUSGSusSEABEDWoods Hole Science CenterUniversity of ColoradoInstitute of Arctic and Alpine ResearchBenthic Habitats (Pacific) ProjectPacific Science CenterWHSCPSCINSTAARISO 19115 Topic Categoryoceans and estuarieslocationgeoscientificInformationNASA/Global Change Master Directory (GCMD) Earth Science Keywords. Version 5.3.3OceansMarine SedimentsBiogenic SedimentsSediment ChemistrySediment CompositionSediment TexturesSedimentationTerrigenous SedimentsGeneralLouisiana Ship Shoal Trinity Shoal Gulf Coast Gulf of Mexico United StatesNew Orleans NonePublic domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey (USGS) as the source of this information.Matthew A. ArsenaultU.S. Geological SurveyIT Specialist (Data Management)mailing and physical address

384 Woods Hole Road

Woods HoleMA02543-1598USA(508) 548-8700 x2354(508) 457-2310marsenault@usgs.govhttp://pubs.usgs.gov/of/2006/1195/browseimages/la_clc.jpgImage map showing extent of data layer coverageJPEGMicrosoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.2.1.1332B.J. Buczkowski J.A. ReidC.J. JenkinsJ.M. Reid S.J. WilliamsJ.G. Flocks 2006 1.0Data Series146 Woods Hole Science Center, Woods Hole, MAU.S. Geological Survey, Coastal and Marine Geology Programhttp://pubs.usgs.gov/ds/2006/146/ ShapefileAccuracy of each attribute is dependent on the accuracy of the lineage data.Data in usSEABED are based on the observations and analyses of others, filtered through a unifying and mining software. Each source report varies in type of information/data recorded and format. Only those observations that are recorded can be filtered and mined; only presence (not absence) or information can be noted.Additional useable data may exist in this area; the authors appreciate any information and leads.Locational accuracy is dependent on the accuracy of the navigational technique from the individual data sources and may vary widely (e.g., from 0.005km (differential GPS) in more recent surveys to greater than 2 km based on radar, Loran, or dead reckoning in older surveys.) Users of the data should use their own criteria for assessing the accuracy of the locations.Locational accuracy is dependent on the accuracy of the navigational technique from the individual data sources. Users of the data should use their own criteria for assessing the accuracy of the locations.U.S. Geological SurveyUniversity of Colorado2006 1.0vector digital dataData Series146 Wooods Hole Science Center, Woods Hole, MAU.S. Geological Survey, Coastal and Marine Geology Programhttp://pubs.usgs.gov/ds/2006/146/data/gmx_ext.zip 2006 1.0Data Series146 Wooods Hole Science Center, Woods Hole, MAU.S. Geological Survey, Coastal and Marine Geology Programhttp://pubs.usgs.gov/ds/2006/146/ See separate listing contained within the Larger_Work_Citation of the Source_Citation for specific sources and associated metadataonline2006 publication datepoint locations, descriptions and analytical data on many different types of sediment and rock materials and benthos for the entire Gulf coastThe data contained in this report were clipped from the larger citation using the 'Select' tool in the ArcToolbox, and selected using the following criteria: "LATITUDE" >=26.405 and "LATITUDE" <=30.643 and "LONGITUDE" <=-88.2020 and "LONGITUDE" >=-94.39667GMX_EXT 2006LA_EXT Matthew A. ArsenaultU.S. Geological SurveyIT Specialist (Data Management)mailing and physical address

384 Woods Hole Rd

Woods HoleMA02543-1598USA508-548-8700 x2354508-457-2310marsenault@usgs.govVectorEntity point23928SimplePointFALSE23928TRUEFALSE0.0000000.000000Decimal degreesNorth American Datum of 1927Clarke 18666378206.400000294.978698GCS_Assumed_Geographic_1la_extShapefile Attribute TableESRIFeature Class23928FIDInternal feature number.ESRISequential unique whole numbers that are automatically generated.ShapeFeature geometry.ESRICoordinates defining the features.LATITUDELatitude coordinate of sample locationsource datadecimal degreesNumber145LONGITUDELongitude coordinate of sample locationsource datadecimal degreesNumber145WATERDEPTHmeasured water depth for site (usually uncorrected)source datametersNumber4SAMPLETOPmeasured subbottom depth information for each point samplemetersNumber82SAMPLEBASEmeasured subbottom depth information for each point samplemetersNumber82SITENAMESurvey or laboratory code for site (non-unique)String44DATASETKEYUnique sequential numeric key to SRC filedbSEABED processing softwareNumber3SITEKEYUnique sequential numeric key to SRC filedbSEABED processing softwareNumber5SAMPLEKEYUnique sequential numeric key to SRC filedbSEABED processing softwareNumber5SAMPLEREquipment used to collect samplesOriginal data sourceString27DATATYPESType of data that were used to derive values held in characterizationACUAcoustic PropertiesdbSEABED Data Entry TemplateCMPSediment CompositiondbSEABED Data Entry TemplateCOLColordbSEABED Data Entry TemplateGTCGeotechnical PropertiesdbSEABED Data Entry TemplateGRZGrain SizedbSEABED Data Entry TemplateTXRTexturedbSEABED Data Entry TemplateTXGTexture (Graphic)dbSEABED Data Entry TemplateLTHLithologydbSEABED Data Entry TemplateString23GRAVELGravel grainsize fractionOriginal data source0100percent1Number3SANDSand grainsize fractionOriginal data source0100percent1Number3MUDMud grainsize fractionOriginal data source0100percent1Number3CLAYClay grainsize fractionOriginal data source0100percent1Number3GRAINSIZEPhi characteristic grainsize-7.312phi0.1Number71SORTINGPhi grainsize dispersion; standard deviation sorting only06phi0.1Number92SEABEDCLSSeabed class; (Facies) with the maximum Fuzzy Membership value > 30%dbSEABED processing softwareString2CLSMSHPClass membership; fuzzy membership (%) of above Class (Facies)dbSEABED processing softwareNumber3FOLKCODEGrainsize classificationFolk, Andrews, and Lewis, 1970(g)Mslightly gravelly muddbSEABED software, version MNEt(g)mSslightly gravelly muddy sanddbSEABED software, version MNEt(g)sMslightly gravelly sandy muddbSEABED software, version MNEt(g)Sslightly gravelly sanddbSEABED software, version MNEtGgraveldbSEABED software, version MNEtgMgravelly muddbSEABED software, version MNEtgmSgravelly muddy sanddbSEABED software, version MNEtgSgravelly sanddbSEABED software, version MNEtMmud dbSEABED software, version MNEtmGmuddy graveldbSEABED software, version MNEtmSmuddy sanddbSEABED software, version MNEtmsGmuddy sandy graveldbSEABED software, version MNEtSsanddbSEABED software, version MNEtsGsandy graveldbSEABED software, version MNEtsMsandy muddbSEABED software, version MNEtString5SHEPARDCODShepard code; grain size classificationCLAYEY SILTSANDY SILTSAND SILT CLAYSILTY CLAYSANDSILTY SANDSEDIMENTCLAYEY SANDCLAYSANDY CLAYSILTGRAVELLY SEDIMENTGRAVELString17ROCKMSHPRock membership; fuzzy membership (%) reflecting percent exposure of rockdbSEABED processing software-99no dataNumber3WEEDMSHPWeed membership; fuzzy membership (%) reflecting percent abundance of seaweed and seagrassdbSEABED processing software-99no dataNumber3CARBONATECarbonate, including finest to coarsest sampled fractionsString5MUNSLCODEMunsell color codeGSA Rock-Color Chart, 1991non-unique code based on HVC (Hue, Value, Chroma)String7ORGCARBONorganic carbon in the sample0100percentNumber51LGSHEARSTRUndrained compressive shear strength, Log10 of KiloPascalsdbSEABED processing software-99no datadbSEABED software, version MNEtNumber82POROSITYVoid volumedbSEABED processing softwarepercentNumber3PWAVEVELCompressional wave velocitydbSEABED processing softwaremeters/secondNumber4ROUGHNESSA coded output representing the V:H of the roughness element with greatest aspect ratiodbSEABED processing softwarevalues expressed as (rounded) integer log2 of V and H in cmString2LGCRSHSTLog Critical Shear Stress, Log10 of Tau in kPa, being the Shear Stress required to initiate easily observable erosion and transport, whether by traction or suspensionkPaNumber3SAMPLEPHASSample Phase; records whether the results are for the whole, bulk sediment or just to some special partdbSEABED processing softwareOutput as a word-based description that may involve numerics. This field will need to be selected against when GIS mappings of the bulk sediment characters are being mapped. Only blank entries should be included in such a mapping.String58Values of -99 for any field are indications that there was no data available.Matthew A. ArsenaultU.S. Geological SurveyIT Specialist (Data Management)mailing and physical address

384 Woods Hole Rd.

Woods HoleMA02543-1598USA(508) 548-8700 x2354(508) 457-2310marsenault@usgs.govDownloadable DataAlthough 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.ASCIIText file containing data input to usSEABED. Fields are comma separated values. First record of file contains field names.no compression applied19.1 MB0.639http://pubs.usgs.gov/of/2006/1195/data/usseabed/la_ext.txt Downloadable thru the WWWCD-ROM650MbytesISO 9660 and HFS SHP3.3ESRI ShapefileThe SHP file contains the geospatial data. The SHX file contains the index of the geospatial data. The DBF file contains the attribute data in dBASE format. The PRJ file contains the coordinate system information (optional). The AVL file contains the legend information (optional). The SBN and SBX files contain the spatial index of the geospatial data (optional). The XML file contains the metadata describing the data set <data set name>.shp.xml. An ASCII version of the metadata file. A browse graphic showing the data layer coverage and extent (optional).winzip0.639http://pubs.usgs.gov/of/2006/1195/data/usseabed/la_ext.zip http://pubs.usgs.gov/ofr/2006/1195/htmldocs/data_catalog.htm Downloadable thru the WWWCD-ROM650MbytesISO 9660 and HFS NoneThese data are available in Environmental Systems Research Institute (ESRI) shapefile format. The user must have ArcGIS® or ArcView® 3.0 or greater software to read and process the data file. In lieu of ArcView or ArcGIS, the user may utilize another GIS application package capable of importing the data. A free data viewer, arcexplorer, capable of displaying the data is available from ESRI at www.esri.com.2007040520050512Matthew A. ArsenaultU.S. Geological SurveyIT Specialist (Data Management)mailing and physical address

384 Woods Hole Rd.

Woods HoleMA02543-1598USA(508) 548-8700 x2354(508) 457-2310marsenault@usgs.govFGDC Content Standards for Digital Geospatial MetadataFGDC-STD-001-1998local timeNoneNoneenhttp://www.esri.com/metadata/esriprof80.htmlESRI Metadata Profile{9C0DCEE1-E02F-4E52-9397-B6731FB7C463}2007021615383400FALSE20070405105752002007040510584900Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.2.1.1332la_ext-94.39944-88.20230.64326.4051-94.39944-88.20230.64326.4051ISO 19115 Geographic Information - MetadataDIS_ESRI1.0dataset002file://\\MATARSDTXP2\D$\fordonna\usseabed\la_ext.shpLocal Area Network0.639ShapefileGCS_Assumed_Geographic_12392820070405