Maine Geological Survey 20130816 small_point_bedrock_lithology_points vector digital data Source of individual data points listed in the data_src field in associated attribute table. SMALL_POINT_LITHOLOGY_POINTS contains lithological point data for the quadrangle mapped at a scale of 1:24,000, from the Maine Geological Survey, Department of Agriculture, Conservation and Forestry. Printed maps published by the Maine Geological Survey on USGS 7.5' quadrangle bases. Bedrock geology points delineated and digitized by the Maine Geological Survey from data compiled on USGS 7.5' quadrangle bases (Full description of each rock type is contained in the associated attribute table). Delineate bedrock characteristics. Bedrock maps indicate the distribution, lithology, age, and structural characteristics of bedrock units, and the stratigraphic, intrusive, and structural relationships among rock units. Symbols indicate locations of specific bedrock features and the rock type noted in the field by the geologist. May include descriptive features such as bedding style, weathering character, and diagnostic minerals.This information has a wide variety of uses by environmental or geotechnical consultants, hydrogeologists, mineral prospectors, rock and stone producers, soil scientists, ecologists, and geologists. 20130816 publication date Complete Irregular -69.865013 -69.782736 43.750079 43.700608 Maine GIS Thesaurus-Theme geology, bedrock ISO Keyword Thesaurus geoscientificInformation, imageryBaseMapsEarthCover ISO 19115 Topic Categories geoscientificInformation Maine GIS Thesaurus-Place Maine, United States GCMD Parameter Keyword solid earth None Users must assume responsibility in determining the usability of this data for their purposes. User must include full citation (author, pubdate, title, and source fields in associated attribute table) for the bedrock geology points when using the data in printed or digital form. Maine Geological Survey (MGS) mailing
93 State House Station
Augusta Maine 04333 USA
207-287-2801 mgs@maine.gov
Credit should be given to the data source and/or originator when data is transferred or printed. Source should be cited as: Maine Geological Survey, Maine Department of Agriculture, Conservation and Forestry, 93 State House Station, Augusta, ME 04333-0093. Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; Esri ArcGIS 10.1.1.3143
24000 hardcopy USGS 1:24,000 7.5' quadrangles used as mapping base Vector Entity point 230 NAD 1983 UTM Zone 19N 0.9996 -69.0 0.0 500000.0 0.0 coordinate pair 0.000000002220024164500956 0.000000002220024164500956 meter D North American 1983 GRS 1980 6378137.0 298.257222101 small_point_bedrock_lithology_points Point feature class ESRI FID Internal feature number. Esri Sequential unique whole numbers that are automatically generated. OBJECTID Internal feature number. ESRI Sequential unique whole numbers that are automatically generated. state_id Unique state-wide point identification number for bedrock data location. MGS Unique assigned number quadname Name of 7.5-minute USGS quadrangle. MGS Quadname lith_code A 1-character to 5-character code that indicates the rock type reported in that row. The Lithology code is designed to allow a map user to easily find all occurrences of a particular rock type, which then can be listed or displayed on a map independently of the map unit. MGS see associated attribute table lith_expl Explanation of lithology codes used in the quadrangle. MGS see associated attribute table descript The lithology description is a text field that allows the geologist to make additional descriptive information about the lithology at this particular site. This may include subjective information about the quality of the observations as well as objective information about weathering, layering, structural features, grain size, mineral textures, physical or optical properties determined in the field or in thin section, and anything else about the rock. MGS see associated attribute table data_src Formal citation of the data source. In most cases, the source of the data will be original field work by the geologist submitting the file. Example 1: Henry N. Berry IV, Maine Geological Survey, 2007-2008, original data. In some cases, however, data may have been compiled from existing sources such as published maps, unpublished thesis maps, well logs, etc. This is allowable as long as the data source is properly acknowledged. Example 2: Arthur M. Hussey II, 1971, Geologic Map of the Portland Quadrangle, Maine. Maine Geological Survey map GM-1, 1:62,500. Listing the source of data separately from the “person submitting this file”, allows someone to submit data collected by someone else, but the person submitting the file is responsible for any errors that may occur. Citing the original source allows questions to be investigated and errors to be corrected. Each data file must contain data from only one source. If data are being submitted from more than one source, they must be submitted in separate data files. MGS from associated open-file map submit_by Name of the person who actually delivered the file to MGS. (This might not be the person who collected the data, or the person who created the file.) This is the one person responsible for the data file. MGS from associated open-file map submit_dat Date when the file was actually delivered to MGS. (This is not the date when the data were collected, and probably not the date the data file was created.) MGS from associated open-file map method This field describes how the data were collected. If they are original data, then they were collected by field work. If they are pre-existing data, then they may have been transcribed from existing maps or copied from data tables or log sheets. This may be a lengthy comment, if it was a complex procedure. Example 1: Field work. Example 2: Data recovered by digitizing symbols from existing paper map. Example 3: Data transcribed from Table 12, p. 134-138 of thesis. MGS from geologist field data Shape Feature geometry. ESRI Coordinates defining the features. min_code reports minerals that have been identified, using the standard list of two-letter or three-letter abbreviations presented by Kretz (1983), and adopted by MGS. The Lith_code in the same row of the Data Sheet indicates the rock type in which the minerals occur. This allows the mineralogy of one rock type, pegmatite for example, to be reported separately from the mineralogy of another rock type, schist for example, which might occur at the same site with the same Stateid. MGS from geologist field data Attribute table for bedrock geology lithology points. 20130816 Maine Geological Survey (MGS) mailing
93 State House Station
Augusta Maine 04333 USA
207-287-2801 mgs@maine.gov
FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998 local time Users must assume responsibility in determining the usability of this data for their purposes. User must include full citation (author, pubdate, title, and source fields in associated attribute table) for the bedrock geology points when using the data in printed or digital form.