Sample SamplesHaveMunsell Relationship SamplesHaveMunsell Relationship SamplesHavePhi Relationship CoresHaveSamples Relationship LayersHaveSamples Relationship GrabsHaveSamples Relationship GrabsHaveSamples Relationship LayersHaveSamples Relationship LayersHaveSamples Relationship 002 20241028 19495900 20250422 17150100 1.0 20240327 17255400 FALSE NAP 150000000 5000 533BB135-1D5F-4E19-8267-1CD9D2ECB4FE dataset Oceanographer U.S. Department of Interior, Bureau of Ocean Energy Management, Marine Minerals Program 703-787-1747 marineminerals@boem.gov 45600 Woodland Road, VAM-LD Sterling VA 20166 US Monday through Friday 8:00 AM to 5:00 PM (Eastern Time) http://www.boem.gov/Marine-Minerals-Program http://www.boem.gov/Marine-Minerals-Program HyperText Protocol web browser BOEM MMIS website Monday through Friday 8:00 AM to 5:00 PM (Eastern Time) 20241001 ArcGIS 10.8.1 Enterprise Geodatabase Table https://geoseas.geoplatform.gov/hosting/rest/services/MMP 2024-10-01T00:00:00 U.S. Department of Interior, Bureau of Ocean Energy Management, Marine Minerals Program marineminerals@boem.gov 45600 Woodland Road, VAM-LD Sterling VA 20166 US http://www.boem.gov/Marine-Minerals-Program HyperText Protocol web browser BOEM MMIS website Monday through Friday 8:00 AM to 5:00 PM (Eastern Time) U.S. Department of Interior, Bureau of Ocean Energy Management, Marine Minerals Program tabular digital data Sample <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The Samples Table contains information and data pertaining to sediment samples derived from cores (including borings) and grab samples (see Core and Grab Samples feature classes). The attributes in this table summarize sample acquisition (study and sample ID, elevation ,interval, source agency, contact info, etc.), processing and analysis (analysis date, dissolutions, removals, data reduction methods, etc.), and results of laboratory grain-size analyses. Each respective sample entry in this table is related to it's respective Core or Grab Sample feature. If available, data and additional content (e.g. photos, pdf logs, imagery, spreadsheets, weblinks, etc.) associated with individual sediment sample analyses (e.g. phi size distributions, Munsell color, age dating, heavy mineral content, and infauna) are provided within related MMIS geodatabase tables.</SPAN></P></DIV></DIV></DIV> These data were compiled from multiple agencies conducting investigations and studies relevant to outer continental shelf (OCS) non-energy mineral resource (e.g. sand, gravel, shell) management. Many of these efforts were funded at least partially by the Bureau of Ocean Energy Management (BOEM) (formerly known as the Minerals Management Service). The information contained in and linked to this table supports a wide variety of planning and management decisions and may provide a basis for future investigations of non-energy OCS mineral resources. U.S. Department of Commerce, 1995, Countries, dependencies, areas of special sovereignty, and their principal administrative divisions, Federal Information Processing Standard (FIPS) 10-4): Washington, D.C., National Institute of Standards and Technology. 1995-01-01T00:00:00 US NASA/GCMD Location Keywords 2021-01-26T00:00:00 ATLANTIC OCEAN GULF OF MEXICO SEA FLOOR GLOBAL OCEAN NORTH ATLANTIC OCEAN Outer Continental Shelf NASA/GCMD Project Keywords 2021-01-26T00:00:00 OCS > Outer Continental Shelf Program Library of Congress Subject Headings 2021-03-01T00:00:00 Scientific archives Geology Electronic records Submarine geology SeaDataNet Common Vocabularies 2019-01-01T00:00:00 Marine Geology NASA/GCMD Science Keywords 2021-01-26T00:00:00 EARTH SCIENCE > Oceans > Marine Environment Monitoring EARTH SCIENCE > Oceans > Marine Sediments EARTH SCIENCE > Oceans > Marine Sediments > Sedimentary Textures USGS Science Topics 2005-03-01T00:00:00 Sea-floor characteristics This data is in the public domain and has no access restrictions. FIPS 199 Security Classification There are no restrictions; the data is releasable to the public. <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The Bureau of Ocean Energy Management (BOEM) provides the data for use "as is". BOEM provides this information with the understanding that it is not guaranteed to be accurate, correct or complete and conclusions drawn from such information are the responsibility of the user. While every effort has been made to ensure the accuracy, correctness and timeliness of materials presented within the limits of the current state of the art, BOEM assumes no responsibility for errors or omissions, nor as a result of the failure of the data to function on a particular system. BOEM makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty. Users are cautioned to consider carefully the provisional nature of these data and information before using them for decisions that concern personal or public safety or the conduct of business that involves substantial monetary or operational consequences. Conclusions drawn from or actions undertaken on the basis of, such data and information are the sole responsibility of the user. The maps shown here are for illustration and planning purposes only and are not suitable for site-specific decision making. The data are not suitable for navigational purposes. Information found here should not be used for making financial or any other commitments. This data was developed by the U.S. Government; no other proprietary rights may be attached to them nor may they be sold to the U.S. Government as part of any procurement of products or services. Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Please recognize the Bureau of Ocean Energy Management (BOEM) as the source of this information.</SPAN></P></DIV></DIV></DIV> publication date 2021-07-23T00:00:00 2024-10-01T00:00:00 PDF versions of borelogs, penetrometer logs, grain-size distribution curves, and photos are linked to the Samples tables via the Sample Attachments table (currently accessible by BOEM MMP staff only but can be provided upon request). The most current version of the related cores and grabs dataset can be downloaded via the Marine Minerals Information System (MMIS) viewer at https://mmis.boem.gov. Oceanographer U.S. Department of Interior, Bureau of Ocean Energy Management, Marine Minerals Program 703-787-1747 marineminerals@boem.gov 45600 Woodland Road, VAM-LD Sterling VA 20166 US Monday through Friday 8:00 AM to 5:00 PM (Eastern Time) http://www.boem.gov/Marine-Minerals-Program http://www.boem.gov/Marine-Minerals-Program HyperText Protocol web browser BOEM MMIS website Monday through Friday 8:00 AM to 5:00 PM (Eastern Time) U.S. Department of Interior, Bureau of Ocean Energy Management, Marine Minerals Program Esri ArcPro Percent Carbonate Vibracore Geoscientific Information Sphericity Push Core Grab Sample Cores Phi Box Core Roundness Stratigraphic Jet Probe Percent Organics Sand Gravel Silt Clay Mud Fines Sediment Sample Marine Minerals Benthic Geology OCS Sorting Grain Size Shell CMECS Percent Carbonate Vibracores Porosity Geoscientific Information Sphericity Push Core Grab Sample Cores Phi Box Core Roundness Stratigraphic Jet Probe Percent Organics 2026-01-01T00:00:00 The MMIS data model utilizes a hierarchical structure where an ESRI enterprise geodatabase represents the top tier, and feature datasets and raster catalogs are the secondary tiers which contain groupings of similar data layers. These individual data layers were identified by MMP as important, and they make up the bottom tier. Most individual vector layers and tables are collections of data from multiple sources and across multiple dates. Extensive research went into the construction of (1) the hierarchical groupings of data (primarily by subject matter and file format) and (2) technical aspects of the data model. Data within the geodatabase was consolidated to reduce redundancy, resulting in several stand-alone tables. Relationship classes utilizing global IDs were built between vector layers and stand-alone tables in order to link disparate data. The entire MMIS data model was originally constructed using ESRI ArcGIS Diagrammer, a tool that creates and edits a geodatabase schema. The resulting geodatabase structure, data, and relationship classes were reviewed thoroughly by multiple individuals using ESRI Geodatabase Diagrammer Add-In, ESRI ArcGIS, and Microsoft Visio. ESRI Geodatabase Diagrammer Add-In creates a detailed break-down of the geodatabase and a Visio data model poster. Conceptual consistency: adherence to rules of the conceptual schema The MMIS data model utilizes a hierarchical structure where an ESRI enterprise geodatabase represents the top tier, and feature datasets and raster catalogs are the secondary tiers which contain groupings of similar data layers. These individual data layers were identified by MMP as important, and they make up the bottom tier. Most individual vector layers and tables are collections of data from multiple sources and across multiple dates. Extensive research went into the construction of (1) the hierarchical groupings of data (primarily by subject matter and file format) and (2) technical aspects of the data model. Data within the geodatabase was consolidated to reduce redundancy, resulting in several stand-alone tables. Relationship classes utilizing global IDs were built between vector layers and stand-alone tables in order to link disparate data. The entire MMIS data model was originally constructed using ESRI ArcGIS Diagrammer, a tool that creates and edits a geodatabase schema. The resulting geodatabase structure, data, and relationship classes were reviewed thoroughly by multiple individuals using ESRI Geodatabase Diagrammer Add-In, ESRI ArcGIS, and Microsoft Visio. ESRI Geodatabase Diagrammer Add-In creates a detailed break-down of the geodatabase and a Visio data model poster. The spatial data and attribute tables loaded into the MMIS data model are believed to be complete, in regards to maintaining each data layer/table after retrieving it from its source. Please refer to the scientific reports, as well as BOEM MMP Leases, negotiated agreements, Memoranda of Agreements, and project completion reports, for discussions of the results on the corresponding source data. Most individual vector layers and tables in the MMIS data model are collections of data from multiple sources and across multiple dates. Most likely, these MMIS layers/tables will continue to have more data loaded in the future, therefore expanding upon the list of sources and dates. Additionally, the Pacific Outer Continental Shelf (OCS) and Alaska OCS regions may eventually be added to the data model, aside from the Atlantic and Gulf of Mexico OCS regions. Completeness omission: data absent from the dataset, as described by the scope The spatial data and attribute tables loaded into the MMIS data model are believed to be complete, in regards to maintaining each data layer/table after retrieving it from its source. Please refer to the scientific reports, as well as BOEM MMP Leases, negotiated agreements, Memoranda of Agreements, and project completion reports, for discussions of the results on the corresponding source data. Most individual vector layers and tables in the MMIS data model are collections of data from multiple sources and across multiple dates. Most likely, these MMIS layers/tables will continue to have more data loaded in the future, therefore expanding upon the list of sources and dates. Additionally, the Pacific Outer Continental Shelf (OCS) and Alaska OCS regions may eventually be added to the data model, aside from the Atlantic and Gulf of Mexico OCS regions. Please refer to the scientific reports, as well as Bureau of Ocean Energy Management (BOEM) Marine Minerals Program (MMP) Leases, negotiated agreements, cooperative agreements, Memoranda of Agreements, and project completion reports, for accuracy statements on the corresponding source data. These documents are referenced in the attribute tables, where appropriate. In regards to attribute assignment in the Marine Minerals Information Systems (MMIS) data model, every effort was made to load source data into MMIS without error or modification. Some attributes contain domain restrictions in an effort to standardize the field entries and to decrease potential inconsistent entries (e.g., spelling, grammar, typographical errors, and subject matter) in the attribute. Quantitative attribute accuracy: accuracy of quantitative attributes Please refer to the scientific reports, as well as Bureau of Ocean Energy Management (BOEM) Marine Minerals Program (MMP) Leases, negotiated agreements, cooperative agreements, Memoranda of Agreements, and project completion reports, for accuracy statements on the corresponding source data. These documents are referenced in the attribute tables, where appropriate. In regards to attribute assignment in the Marine Minerals Information Systems (MMIS) data model, every effort was made to load source data into MMIS without error or modification. Some attributes contain domain restrictions in an effort to standardize the field entries and to decrease potential inconsistent entries (e.g., spelling, grammar, typographical errors, and subject matter) in the attribute. unknown Absolute external positional accuracy: closeness of reported coordinate values to values accepted as or being true Absolute external positional accuracy: closeness of reported coordinate values to values accepted as or being true Absolute external positional accuracy: closeness of reported coordinate values to values accepted as or being true unknown Absolute external positional accuracy: closeness of reported coordinate values to values accepted as or being true Absolute external positional accuracy: closeness of reported coordinate values to values accepted as or being true Absolute external positional accuracy: closeness of reported coordinate values to values accepted as or being true Lineage varies by data source. Some data was contributed, some was mapped/reformatted from scientific and technical reports for MMIS. BOEM Archives BOEM Archives 2024-10-01T00:00:00 Multiple investigators and projects U.S. Department of Interior, Bureau of Ocean Energy Management, Marine Minerals Program document publication date 2024-10-01T00:00:00 The spatial and tabular data presented in this dataset was identified by the Bureau of Ocean Energy Management (BOEM) Marine Minerals Program (MMP) for the MMIS project as being critical for MMP's decision making and management responsibilities of federal Outer Continental Shelf (OCS) mineral exploration and federal non-energy sand/gravel lease activities. The data was retrieved directly from BOEM, or another government entity, in the form of one or more ArcGIS shapefiles, Microsoft Excel spreadsheets, field logs, project reports, PDF tables, and maps. This data was linked to source documents including study reports and data deliverables associated with Negotiated Non-Competitive Leases or Memorandum of Agreements between BOEM and partnering agencies or contractors. First, the source data was reformatted, if needed, into an ESRI ArcGIS compatible format and then loaded into a project-specific geodatabase in its native projection. Second, the data was reprojected into the NAD83 geodetic reference system and then loaded into corresponding layers and tables in the MMIS enterprise geodatabase. Relationship classes were made between disparate layers and tables to join related data. Lastly, for use in the web application, a duplicate "publishable" MMIS enterprise geodatabase was created in a Web Mercator (Auxiliary Sphere) projection. For specific process information regarding acquisition, please reference the individual study reports. 2024-10-01T00:00:00 Sample Contains information regarding processed sample data within a core or grab sample BOEM Table 61578 SCOrigin For Sediment Component and Grab Sample feature classes only. The substrate origin type is assigned based on dominance (greatest percent cover) of either the geologic, biogenic (but no longer living), or anthropogenic upper layer of substrate. CMECS Geologic Substrate Geologic Substrate CMECS Anthropogenic Substrate Anthropogenic Substrate CMECS Biogenic Substrate Biogenic Substrate CMECS CMECS SC Origin String 30 0 0 SandUnitThickness Thickness of sand unit in sample (meters) BOEM Thickness of sand unit in sample (meters) Sand Unit Thickness Double 8 38 8 SpherDesc Sphericity description (e.g. prisomoidal, sub-prismoidal, spherical, sub-discoidal, discoidal) Folk, R.L., 1955. Student operator error in determination of roundness, sphericity, and grain size. Journal of Sedimentary Petrology, 25: p.297-301. Sphericity description (e.g. prisomoidal, sub-prismoidal, spherical, sub-discoidal, discoidal) Sphericity Description String 50 0 0 SourceName Name of person performing analysis BOEM Name of person performing analysis Source Name String 50 0 0 Porosity Measure of porosity (%) BOEM Measure of porosity (%) Porosity Double 8 38 8 PhiSD Standard deviation of grain size in phi units BOEM Standard deviation of grain size in phi units Phi Standard Deviation Double 8 38 8 SampleBase_ft Measured sub-bottom depth for a point sample (ft). This attribute should be utilized in cases where no sample interval is specified. BOEM Measured sub-bottom depth for a point sample (ft). This attribute should be utilized in cases where no sample interval is specified. Sample Base (ft) Double 8 38 8 SampleID Sample ID as indicated by the study BOEM Sample ID as indicated by the study Sample ID String 50 0 0 Samples_GlobalTableID Uniquely identifies an analysis table to a sample BOEM Uniquely identifies an analysis table to a sample Global Table ID GUID 38 0 0 TopInterval Top of Sample Interval in feet BOEM Top of Sample Interval in feet Top of Sample Interval Double 8 38 8 PhiMedian Median grain size in phi units BOEM Median grain size in phi units Phi Median Double 8 38 8 AnalysisDate Date of sediment analysis BOEM Date of sediment analysis Analysis Date Date 8 0 0 Samples_GlobalLayerID Uniquely identifies the core layer to the sample table BOEM Uniquely identifies the core layer to the sample table Global Layer ID GUID 38 0 0 SCGroup For Sediment Component and Grab Sample feature classes only. Substrate groups and substrate subgroups are determined by Folk (1954) mixes for Geologic Sediments and by taxa for the Biogenic Substrates. Groups and subgroups are not used for Anthropogenic Substrates. CMECS s2.5.3.2-Crepidula Hash Crepidula Hash CMECS s2.5.1.2-Crepidula Reef Substrate Crepidula Reef Substrate CMECS s2.6.2.1-Sepulid Reef Substrate Sepulid Reef Substrate CMECS s2.6.2.3-Serpulid Hash Serpulid Hash CMECS s2.6.2.2-Serpulid Rubble Serpulid Rubble CMECS s2.5.2.1-Clam Rubble Clam Rubble CMECS s1.2.2.4-Sandy Mud Sandy Mud CMECS s2.5.1.3-Mussel Reef Substrate Mussel Reef Substrate CMECS s2.5.4.1-Clam Sand Clam Sand CMECS s2.5.1.1-Clam Reef Substrate Clam Reef Substrate CMECS s1.2.1.1-Gravel Gravel CMECS s1.2.1.3-Gravelly Gravelly CMECS s2.4.1.2-Foraminiferan Ooze Foraminiferan Ooze CMECS s2.5.1.4-Oyster Reef Substrate Oyster Reef Substrate CMECS s2.5.3.3-Mussel Hash Mussel Hash CMECS s2.4.2.2-Radiolarian Ooze Radiolarian Ooze CMECS s1.2.1.2-Gravel Mixes Gravel Mixes CMECS s1.2.2.5-Mud Mud CMECS s2.5.2.4-Oyster Rubble Oyster Rubble CMECS s2.1.2.2-Rhodoliith Hash Rhodoliith Hash CMECS s2.6.1.3-Sabellariid Hash Sabellariid Hash CMECS s2.6.1.2-Sabellariid Rubble Sabellariid Rubble CMECS s1.2.2.3-Muddy Sand Muddy Sand CMECS s1.2.2.2-Sand Sand CMECS s2.3.1.2-Woody Debris Woody Debris CMECS s2.4.1.1-Coccolithophore Ooze Coccolithophore Ooze CMECS s2.5.2.2-Crepidula Rubble Crepidula Rubble CMECS s2.1.1.1-Halimeda Sand Halimeda Sand CMECS s2.6.1.1-Sabellariid Reef Substrate Sabellariid Reef Substrate CMECS s2.5.3.4-Oyster Hash Oyster Hash CMECS s1.2.2.1-Slightly Gravelly Slightly Gravelly CMECS s2.1.2.1-Rhodolith Rubble Rhodolith Rubble CMECS s2.4.1.3-Pteropod Ooze Pteropod Ooze CMECS s2.4.2.1-Diatomaceous Ooze Diatomaceous Ooze CMECS s2.1.2.3-Rhodolith Sand Rhodolith Sand CMECS s2.3.1.1-Peat Debris Peat Debris CMECS s2.5.3.1-Clam Hash Clam Hash CMECS s2.5.2.3-Mussel Rubble Mussel Rubble CMECS CMECS SC Group String 50 0 0 StudyID Study ID of the study in which the feature was identified. Study ID following the convention noted in the Data Management Plan BOEM Study ID of the study in which the feature was identified. Study ID following the convention noted in the Data Management Plan Study ID String 250 0 0 PhiMean Mean phi grain size BOEM Mean phi grain size Phi Mean Double 8 38 8 Samples_GlobalSampleID Uniquely identifies the sample to the Core and Grab Sample FC BOEM Uniquely identifies the sample to the Core and Grab Sample FC Global Sample ID GUID 38 0 0 CarbonateDissolved Was carbonate dissolved before analysis? Values "Y","N" or null BOEM Y Yes BOEM N No BOEM Carbonate Dissolved String 3 0 0 PctOrganics Percent weight of organic content in sample BOEM Percent weight of organic content in sample Percent Organics Double 8 38 8 PctCarbonate Percentage of carbonate in sample by weight BOEM Percentage of carbonate in sample by weight Percent Carbonate Double 8 38 8 SourceID Lab conducting the analysis BOEM Lab conducting the analysis Source ID String 50 0 0 PctCarbonateSand Percentage of carbonate sand in sample by weight BOEM Percentage of carbonate sand in sample by weight Percent Carbonate Sand Double 8 38 8 PhiMethod Method of determining Phi BOEM Method of determining Phi Phi Method String 50 0 0 OilPresent Flag of whether or not oil is present in a sample. Values "Y","N" or null BOEM N No BOEM Y Yes BOEM Oil Present String 3 0 0 PctPanFraction Percent weight of remaining material collected in basal sieve nest pan BOEM Percent weight of remaining material collected in basal sieve nest pan Percent Pan Fraction Double 8 38 8 Sphericity Measure of sphericity Folk, R.L., 1955. Student operator error in determination of roundness, sphericity, and grain size. Journal of Sedimentary Petrology, 25: p.297-301. Measure of sphericity Sphericity Double 8 38 8 PctSand Percent weight of sand-sized fraction, sum of fractions may not equal 100% BOEM Percent weight of sand-sized fraction, sum of fractions may not equal 100% Percent Sand Double 8 38 8 OrganicsRemoved Were organics removed before analysis? Values "Y", "N" or null BOEM N No BOEM Y Yes BOEM Organics Removed String 3 0 0 SCSubgroup For Sediment Component and Grab Sample feature classes only. Substrate groups and substrate subgroups are determined by Folk (1954) mixes for Geologic Sediments and by taxa for the Biogenic Substrates. Groups and subgroups are not used for Anthropogenic Substrates. CMECS s2.3.1.2.1-Fine Woody Debris Fine Woody Debris CMECS s1.2.2.2.1-Very Coarse Sand Very Coarse Sand CMECS s1.2.1.3.1-Gravelly Sand Gravelly Sand CMECS s1.2.2.1.2-Slightly Gravelly Muddy Sand Slightly Gravelly Muddy Sand CMECS s1.2.2.3.2-Silty-Clayey Sand Silty-Clayey Sand CMECS s1.2.1.1.1-Boulder Boulder CMECS s1.2.1.2.2-Muddy Sandy Gravel Muddy Sandy Gravel CMECS s2.5.1.1.1-Coquina Reef Substrate Coquina Reef Substrate CMECS s1.2.1.2.3-Muddy Gravel Muddy Gravel CMECS s1.2.2.1.1-Slightly Gravelly Sand Slightly Gravelly Sand CMECS s2.3.1.2.3-Very Coarse Woody Debris Very Coarse Woody Debris CMECS s1.2.1.2.1-Sandy Gravel Sandy Gravel CMECS s1.2.2.3.1-Silty Sand Silty Sand CMECS s2.3.1.2.2-Coarse Woody Debris Coarse Woody Debris CMECS s1.2.2.4.1-Sandy Silt Sandy Silt CMECS s2.4.1.2.1-Globigerina Ooze Globigerina Ooze CMECS s1.2.2.5.3-Clay Clay CMECS s1.2.2.3.3-Clayey Sand Clayey Sand CMECS s1.2.1.1.4-Granule Granule CMECS s1.2.2.1.3-Slightly Gravelly Sandy Mud Slightly Gravelly Sandy Mud CMECS s2.5.2.1.1-Coquina Rubble Coquina Rubble CMECS s1.2.2.2.5-Very Fine Sand Very Fine Sand CMECS s1.2.2.4.3-Sandy Clay Sandy Clay CMECS s1.2.2.4.2-Sandy Silt-Clay Sandy Silt-Clay CMECS s1.2.1.1.2-Cobble Cobble CMECS s2.5.4.1.1-Coquina Sand Coquina Sand CMECS s1.2.1.3.2-Gravelly Muddy Sand Gravelly Muddy Sand CMECS s1.2.2.2.2-Coarse Sand Coarse Sand CMECS s1.2.1.1.3-Pebble Pebble CMECS s1.2.2.2.4-Fine Sand Fine Sand CMECS s2.5.3.1.1-Coquina Hash Coquina Hash CMECS s1.2.2.5.1-Silt Silt CMECS s1.2.2.1.4-Slightly Gravelly Mud Slightly Gravelly Mud CMECS s1.2.1.3.3-Gravelly Mud Gravelly Mud CMECS s1.2.2.2.3-Medium Sand Medium Sand CMECS s1.2.2.5.2-Silt-Clay Silt-Clay CMECS CMECS SC Subgroup String 50 0 0 Comments Additional comments pertaining to the dataset BOEM Additional comments pertaining to the dataset Comments String 300 0 0 PctClay Percent weight of clay-sized fraction, sum of fractions may not equal 100% BOEM Percent weight of clay-sized fraction, sum of fractions may not equal 100% Percent Clay Double 8 38 8 GrabElevation Elevation of grab samples only, not applicable for core samples. Negative values in feet below mean sea level BOEM Elevation of grab samples only, not applicable for core samples. Negative values in feet below mean sea level Grab Elevation Double 8 38 8 HeavyMineralsDissolved Were heavy minerals removed before analysis? Values "Y", "N" or null BOEM N No BOEM Y Yes BOEM Heavy Minerals Dissolved String 3 0 0 SCClass Sediment component class. Substrate classes and substrate subclasses are determined by the composition and particle size of the dominant substrate origin in the surface sediments. Class and subclass definitions represent a merging of approaches from Wentworth (1922), Folk (1954), and the FGDC-STD-004. CMECS s3.5-Trash Trash CMECS s3.2-Anthropogenic Wood Anthropogenic Wood CMECS s2.2-Coral Substrate Coral Substrate CMECS s3.4-Metal Metal CMECS s2.1-Algal Substrate Algal Substrate CMECS s1.1-Rock Substrate Rock Substrate CMECS s1.2-Unconsolidated Mineral Substrate Unconsolidated Mineral Substrate CMECS s2.4-Ooze Substrate Ooze Substrate CMECS s3.3-Construction Materials Construction Materials CMECS s3.1-Anthropogenic Rock Anthropogenic Rock CMECS s2.6-Worm Substrate Worm Substrate CMECS s2.3-Organic Substrate Organic Substrate CMECS s2.5-Shell Substrate Shell Substrate CMECS CMECS SC Class String 50 0 0 PhiSkewness Defines the symmetry of the grain size distribution BOEM Defines the symmetry of the grain size distribution Phi Skewness Double 8 38 8 SCSubclass For Sediment Component and Grab Sample feature classes only. Substrate classes and substrate subclasses are determined by the composition and particle size of the dominant substrate origin in the surface sediments. Class and subclass definitions represent a merging of approaches from Wentworth (1922), Folk (1954), and the FGDC-STD-004. CMECS s2.6.1-Sabellariid Substrate Sabellariid Substrate CMECS s1.1.2-Megaclast Megaclast CMECS s2.2.1-Coral Reef Substrate Coral Reef Substrate CMECS s3.4.1-Metal Reef Substrate Metal Reef Substrate CMECS s2.4.1-Carbonate Ooze Carbonate Ooze CMECS s3.3.1-Construction Reef Construction Reef CMECS s2.5.4-Shell Sand Shell Sand CMECS s2.5.2-Shell Rubble Shell Rubble CMECS s3.2.1-Anthropogenic Wood Reef Substrate Anthropogenic Wood Reef Substrate CMECS s1.2.2-Fine Unconsolidated Substrate Fine Unconsolidated Substrate CMECS s2.2.4-Coral Sand Coral Sand CMECS s3.4.3-Metal Hash Metal Hash CMECS s3.1.2-Anthropogenic Rock Rubble Anthropogenic Rock Rubble CMECS s2.1.2-Rhodolith Substrate Rhodolith Substrate CMECS s2.1.1-Algal Sand Algal Sand CMECS s1.2.1-Coarse Unconsolidated Substrate Coarse Unconsolidated Substrate CMECS s2.2.2-Coral Rubble Coral Rubble CMECS s2.4.2-Siliceous Ooze Siliceous Ooze CMECS s2.3.2-Organic Detritus Organic Detritus CMECS s3.3.2-Construction Rubble Construction Rubble CMECS s3.2.3-Anthropogenic Wood Hash Anthropogenic Wood Hash CMECS s2.3.1-Organic Debris Organic Debris CMECS s2.2.3-Coral Hash Coral Hash CMECS s3.3.3-Construction Hash Construction Hash CMECS s2.5.3-Shell Hash Shell Hash CMECS s3.1.1-Anthropogenic Rock Reef Substrate Anthropogenic Rock Reef Substrate CMECS s3.1.3-Anthropogenic Rock Hash Anthropogenic Rock Hash CMECS s3.1.4-Anthropogenic Rock Sand Anthropogenic Rock Sand CMECS s2.3.3-Organic Mud Organic Mud CMECS s3.5.2-Trash Bits Trash Bits CMECS s3.1.5-Anthropogenic Rock Mud Anthropogenic Rock Mud CMECS s3.2.2-Anthropogenic Wood Rubble Anthropogenic Wood Rubble CMECS s3.4.2-Metal Rubble Metal Rubble CMECS s1.1.1-Bedrock Bedrock CMECS s2.5.1-Shell Reef Substrate Shell Reef Substrate CMECS s2.6.2-Serpulid Substrate Serpulid Substrate CMECS s3.5.1-Trash Rubble Trash Rubble CMECS CMECS SC Subclass String 50 0 0 PctSilt Percent weight of silt-sized fraction, sum of fractions may not equal 100% BOEM Percent weight of silt-sized fraction, sum of fractions may not equal 100% Percent Silt Double 8 38 8 OBJECTID Internal feature number Esri Internal feature number OBJECTID OID 4 10 0 Sort_Descrpt Sorting description (e.g. poorly sorted) BOEM Sorting description (e.g. poorly sorted) Sorting Description String 50 0 0 CoreLayerID Core layer ID as indicated by the study BOEM Core layer ID as indicated by the study Core Layer ID String 50 0 0 PctFines Percent weight of fines, sum of fractions may not equal 100% BOEM Percent weight of fines, sum of fractions may not equal 100% Percent Fines Double 8 38 8 PctHeavyMinerals Percent weight of heavy minerals content in sample BOEM Percent weight of heavy minerals content in sample Percent Heavy Minerals Double 8 38 8 RoundDesc Roundness description (e.g. sub-angular) Folk, R.L., 1955. Student operator error in determination of roundness, sphericity, and grain size. Journal of Sedimentary Petrology, 25: p.297-301. Roundness description (e.g. sub-angular) Round Description String 50 0 0 PhiKurtosis A measure of the relative peakedness of the distribution of grain sizes BOEM A measure of the relative peakedness of the distribution of grain sizes Phi Kurtosis Double 8 38 8 PctShellFragments Percent weight of shell fragments in sample (if applicable), sum of fractions may not equal 100% BOEM Percent weight of shell fragments in sample (if applicable), sum of fractions may not equal 100% Percent Shell Fragments Double 8 38 8 PctGravel Percent gravel-sized fraction, sum of fractions may not equal 100% BOEM Percent gravel-sized fraction, sum of fractions may not equal 100% Percent Gravel Double 8 38 8 CoreID Core ID as indicated by the study BOEM Core ID as indicated by the study Core ID String 50 0 0 Roundness Measure of Roundness Folk, R.L., 1955. Student operator error in determination of roundness, sphericity, and grain size. Journal of Sedimentary Petrology, 25: p.297-301. Measure of Roundness Roundness Double 8 38 8 BottomInterval Bottom of Sample Interval (feet) BOEM Bottom of Sample Interval (feet) Bottom of Sample Interval Double 8 38 8 SortMethod Method of reporting sorting data (e.g. Folk '57) BOEM Method of reporting sorting data (e.g. Folk '57) Sort Method String 50 0 0 ShellFragmentsRemoved Were shell fragments removed before analysis? Values "Y", "N" or null BOEM N No BOEM Y Yes BOEM Shell Fragments Removed String 3 0 0 created_user created_user Stores the name of the user who creates features or records Esri Text 255 Read-only. Stores the name of the user who creates features or records. 0 0 created_date created_date Stores the date and time a feature or record was created Esri Date 8 Read-only. Stores the date and time a feature or record was created. 0 0 last_edited_user last_edited_user Stores the name of the user who last edited a feature or record Esri Text 255 Read-only. Stores the name of the user who last edited a feature or record. 0 0 last_edited_date last_edited_date Stores the date a feature or record was last edited Esri Date 8 Read-only. Stores the date a feature or record was last edited. 0 0 Contains information regarding processed sample data within a core or grab sample BOEM