This geologic map is a compilation of published and unpublished geologic mapping and information derived from other published and unpublished sources. Published geologic maps at scales of 1:250,000, 1:63,360, and 1:50,000 were major sources and range in publication date from 1972 to 2005. More detailed studies, including theses, papers, and unpublished mapping, represent work done between 1980 and 2008.
This data set is a portion of a statewide geology database, which is being compiled by the U.S. Geological Survey's National Surveys and Analysis (NSA) project, whose goal is to compile geologic, geochemical, geophysical, and other data.
NOTE: Because of the limitations of common GIS fonts, the letters "Mz", "Pz", "C", and "Z" are substituted for the standard symbols for "Mesozoic", "Paleozoic", "Cambrian", and "Proterozic".
Supplemental attribute tables included with this data set contain additional descriptive information of each geologic unit. A user may use items SOURCE and CLASS to retrieve information about the original units from which these generalized units were formed.
NOTE: Because of the limitations of common GIS fonts, the letters "Mz", "Pz", "C", and "Z" are substituted for the standard symbols for "Mesozoic", "Paleozoic", "Cambrian", and "Proterozic".
NOTE: Because of the limitations of common GIS fonts, the letters "Mz", "Pz", "C", and "Z" are substituted for the standard symbols for "Mesozoic", "Paleozoic", "Cambrian", and "Proterozic".
Q - queried unit
Generated by mp version 2.8.11 on Fri Apr 23 16:33:10 2010