| 2.1 Has required elements: nonspatial tables DataSources, DescriptionOfMapUnits, GeoMaterialDict; feature dataset GeologicMap with feature classes ContactsAndFaults and MapUnitPolys | PASS |
| 2.2 Required fields within required elements are present and correctly defined | PASS |
| 2.3 GeologicMap topology: no internal gaps or overlaps in MapUnitPolys, boundaries of MapUnitPolys are covered by ContactsAndFaults | PASS |
| 2.4 All map units in MapUnitPolys have entries in DescriptionOfMapUnits table | PASS |
| 2.5 No duplicate MapUnit values in DescriptionOfMapUnit table | PASS |
| 2.6 Certain field values within required elements have entries in Glossary table | PASS |
| 2.7 No duplicate Term values in Glossary table | PASS |
| 2.8 All xxxSourceID values in required elements have entries in DataSources table | PASS |
| 2.9 No duplicate DataSources_ID values in DataSources table | PASS |
| 3.1 Table and field definitions conform to GeMS schema | PASS |
| 3.2 All map-like feature datasets obey topology rules. No MapUnitPolys gaps or overlaps. No ContactsAndFaults overlaps, self-overlaps, or self-intersections. MapUnitPoly boundaries covered by ContactsAndFaults | PASS |
| 3.3 No missing required values | PASS |
| 3.4 No missing terms in Glossary | PASS |
| 3.5 No unnecessary terms in Glossary | PASS |
| 3.6 No missing sources in DataSources | PASS |
| 3.7 No unnecessary sources in DataSources | PASS |
| 3.8 No map units without entries in DescriptionOfMapUnits | PASS |
| 3.9 No unnecessary map units in DescriptionOfMapUnits | PASS |
| 3.10 HierarchyKey values in DescriptionOfMapUnits are unique and well formed | PASS |
| 3.11 All values of GeoMaterial are defined in GeoMaterialDict. GeoMaterialDict is as specified in the GeMS standard | PASS |
| 3.12 No duplicate _ID values | PASS |
| 3.13 No zero-length or whitespace-only strings | PASS |
| MapUnit | DMU | GeologicMap |
|---|---|---|
| KQus | X | X |
| preK | X | X |
| unmapped | X | X |
| OBJECTID | Source | Notes | URL | _ID |
|---|---|---|---|---|
| 1 | this report | none | none | DAS01 |
| 2 | Maryland Geological Survey Drill Cutting Collection | Maryland Geological Survey Drill Cutting Collection | http://www.mgs.md.gov/publications/mgs_data_preservation/cuttings_mapper.html | DAS02 |
| 3 | Maryland Geological Survey Land-based Core Collection | Maryland Geological Survey Land-based Core Collection | http://www.mgs.md.gov/publications/mgs_data_preservation/core_mapper.html | DAS03 |
| 4 | Maryland Geological Survey Basic Data Report #5 | Edwards Jr., J. E., 1970, Deep wells of Maryland: Maryland Geological Survey Basic Data Report #5, 167 p. | http://www.mgs.md.gov/publications/report_pages/BDR_5.html | DAS04 |
| 5 | Maryland Geological Survey Basic Data Report #11 | Nutter, L.J., Smigaj, M.J., Knobel, L.L., Schwarz, K.A., and Edwards, J., Garrett County water-well records, chemical-quality data, ground-water use, coal test-hole data, and surface-water data, with a section on gas-well records: Maryland Geological Survey Basic Data Report #11, 114p. | http://www.mgs.md.gov/publications/report_pages/BDR_11.html | DAS05 |
| 6 | TIGER/Line Shapefile, 2017 | U.S. Bureau of the Census, 2017, Master Address File / Topologically Integrated Geographic Encoding and Referencing (MAF/TIGER) Database (MTDB): Washington D.C., U.S. Bureau of the Census, 2017. | https://catalog.data.gov/dataset/tiger-line-shapefile-2017-nation-u-s-current-state-and-equivalent-national | DAS06 |
| 7 | MGS Open File Report_12-02-20 | Andreasen, D., Staley, A., and Achmad, G., 2013, Maryland Coastal Plain Aquifer Information System: Hydrogeologic Framework: Maryland Geological Survey Open-File Report 12-02-20, 121 p. | http://www.mgs.md.gov/reports/OFR_12-02-20.pdf | DAS07 |
| 8 | FGDC Digital Cartographic Standard for Geologic Map Symbolization | Federal Geographic Data Committee [prepared for the Federal Geographic Data Committee by the U.S. Geological Survey], 2006, FGDC Digital Cartographic Standard for Geologic Map Symbolization: Reston, Va., Federal Geographic Data Committee Document Number FGDC-STD-013-2006, 290 p., 2 plates. | https://ngmdb.usgs.gov/fgdc_gds/geolsymstd.php | DAS08 |
| 9 | GeMS--A Standard for the Digital Publication of Geologic Maps | U.S. Geological Survey National Cooperative Geologic Mapping Program, 2020, GeMS (Geologic Map Schema)-A standard format for the digital publication of geologic maps: U.S. Geological Survey Techniques and Methods, book 11, chap. B10, 74 p. | https://doi.org/10.3133/tm11B10 | DAS09 |
| 10 | Physiographic Map of Maryland | Reger, R. P. and Cleaves, E.T., 2008, Physiographic Map of Maryland: Maryland Geological Survey, 1:250,000 scale | http://www.mgs.md.gov/geology/physiographic_map.html | DAS10 |
| 11 | NASA Shuttle Radar Topography Mission | NASA Jet Propulsion Laboratory, 2014, NASA Shuttle Radar Topography Mission United States 1 arc second, Version 3. NASA EOSDIS Land Processes DAAC, USGS Earth Resources Observation and Science (EROS) Center, Sioux Falls, South Dakota (https://lpdaac.usgs.gov) | https://lpdaac.usgs.gov | DAS11 |
| OBJECTID | MapUnit | Name | FullName | Age | Description | HierarchyKey | ParagraphStyle | Label | Symbol | AreaFillRGB | AreaFillPatternDescription | DescriptionSourceID | GeoMaterial | GeoMaterialConfidence | _ID |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | KQus | Coastal Plain deposits | Undifferentiated Coastal Plain unconsolidated sediments | Cretaceous and younger | Thick wedge of largely unconsolidated sediments underlying Maryland Coastal Plain. Sediments consist primarily of sand, gravel, silt, and clay, ranging in age from Cretaceous to Quaternary. Sediments overlie consolidated basement rocks of Precambrian, Lower Paleozoic, Jurassic(?), and Triassic age. Sediments dip gently to the east and southeast with thickness ranging from a few tens of feet near the Fall Line to approximately 7,200 ft at Ocean City, Maryland. | 01 | DMUUnit1 | KQus | 104 | 222,255,153 | --- | DAS07 | Sediment | High | DMU1 |
| 2 | preK | bedrock | Undifferentiated bedrock units | pre-Cretaceous | Basement complex consisting of Precambrian to Paleozoic crystalline rocks, and Mesozoic (Upper Triassic[?] to Lower Jurassic[?]) sedimentary and volcanic rocks. | 02 | DMUUnit1 | preK | 022 | 255,204,204 | --- | DAS07 | Rock | High | DMU2 |
| 3 | unmapped | unmapped area | unmapped area | N/A | unmapped area corresponds to areas covered by large bodies of water and to areas in adjacent states | 03 | DMUUnit1 | unmapped | --- | --- | --- | DAS01 | Unmapped area | High | DMU3 |
| OBJECTID | Term | Definition | DefinitionSourceID | _ID |
|---|---|---|---|---|
| 1 | certain | Identity of a feature can be determined using relevant observations and scientific judgment; therefore, one can be reasonably confident in the credibility of this interpretation. | DAS08 | GLO01 |
| 7 | cuttings | chips and fragments of material removed during drilling of borehole | DAS01 | GLO06 |
| 6 | DMUUnit1 | Paragraph style for formatted description of first-rank map unit. Times New Roman, Regular, 10 pt, 12 pt leading, left justified, 66 pt left indent, -20 pt 1st line indent, 3 pt space before | DAS01 | GLO05 |
| 18 | elevation of top of PreK basement, approximate | Approximate elevation of top of PreCretaceous basement; elevation of PreCretaceous basement structural contours were created in ArcGIS using the natural neighbor (3D analyst) interpolation technique of combined (1) PreCretaceous basement elevation data from 83 boreholes and (2) select ground surface elevation data from locations along the approximate fall line; Value and ValueConfidence are in feet above sea level; ValueConfidence is unknown | DAS01 | GLO17 |
| 19 | elevation of top of PreK basement, inferred | Inferred elevation of top of PreCretaceous basement; Value and ValueConfidence are in feet above sea level; ValueConfidence is unknown | DAS01 | GLO18 |
| 3 | fall line | Approximate location of the eastern edge of the outcrop of the pre-Cretaceous basement rock and western edge of wedge of Cretaceous and younger unconsolidated sediments of the Coastal Plain. | DAS07 | GLO02 |
| 13 | Global Positioning System (GPS), Standard Positioning Service (SPS) or Precise Positioning Service (PPS) | Global Positioning System (GPS), Standard Positioning Service (SPS) or Precise Positioning Service (PPS), as provided in MGS core inventory | DAS01 | GLO12 |
| 12 | High | The selected term in the GeoMaterial field (and its definition) adequately characterizes the overall lithologic nature of rocks and (or) sediments in the map unit | DAS09 | GLO11 |
| 14 | Interpolated from digital map | Location interpreted from digital map | DAS01 | GLO13 |
| 16 | Interpolated from map | Interpolated from paper map | DAS01 | GLO15 |
| 8 | lithologic log | description of material removed during drilling of borehole | DAS01 | GLO07 |
| 5 | map boundary | Line denoting boundary of area shown on map | DAS01 | GLO04 |
| 15 | Reported | Location reported by driller | DAS01 | GLO14 |
| 9 | rock core | cylinder of rock removed during drilling of borehole | DAS01 | GLO08 |
| 10 | sediment core | cylinder of sediment removed during drilling of borehole | DAS01 | GLO09 |
| 11 | sediment core;rock core | cylinder of sediment and rock core removed during drilling of borehole | DAS01 | GLO10 |
| 4 | unit boundary | Line denoting boundary between map unit area and unmapped area | DAS01 | GLO03 |
| 17 | unit contact | line denoting boundary separating mapped units | DAS01 | GLO16 |