revised: 05-Feb-2015

NMBGMR Draft Geologic Data Model - v. 1.0.4
SYMBOLOGY: Polygon Features

In the interests of standardization and interoperability, we are migrating our geologic maps into the USGS NCGMP09 data model. However, our well data model is still actively being used. Documentation for the NMBGMR geology data model is being provided for users with legacy data in this model. We also hope that it will provoke discussion in the ongoing effort to improve NCGMP09 and other models.

This document indicates how geomorphic surfaces (not deposits) portrayed on a geologic map should be coded in the data model. See the NMBGMR Symbol set (3.7 Mb PDF) for details on how our standard symbology is constructed.

Description Symbol Feature Classes & Attributes Comment
pediment surface Surface_poly
  • SurfaceID=[variable]
  • Overlies=[variable]
  • SurfMod=[unspecified, dissected, undissected]
  • Confidence=[unspecified, variable]
 Erosional surface cut on bedrock related to erosion along a mountain front. Symbolized based on join to Sufaces table.
Geomorphic-Surface Surface_poly
  • SurfaceID=[variable]
  • Overlies=[variable]
  • SurfMod=[unspecified, dissected, undissected]
  • Confidence=[unspecified, variable]
 General geomorphic surface, may either be a strath or the aggredational top of a deposit. Symbolized based on join to Sufaces table.