revised: 05-Feb-2015

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

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.

Contents:

This document indicates how geologic contacts 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.

Contacts

General line types (Applies to Contacts, Fault_line, and Fold_line -- colors and line-weights vary)

Description Symbol Feature Classes & Attributes Comment
contact-certain,exposed Lith_Contacts
  • LineClass="contact/fault/fold"
  • Confidence="certain"
  • Exposure="exposed"
 triangle indicates superior exposure (point data)
contact-certain, obscured Lith_Contacts
  • LineClass="contact/fault/fold"
  • Confidence="certain"
  • Exposure="obscured"
 triangle indicates superior exposure (point data)
contact-certain, concealed Concealed_Contacts
  • LineClass="contact/fault/fold"
  • Confidence="certain"
  
contact-probable, exposed Lith_Contacts
  • LineClass="contact/fault/fold"
  • Confidence="probable"
  • Exposure="exposed"
  
contact-probable, obscured Lith_Contacts
  • LineClass="contact/fault/fold"
  • Confidence="probable"
  • Exposure="obscured"
  
contact-probable, concealed Concealed_Contacts
  • LineClass="contact/fault/fold"
  • Confidence="probable"
  
contact-uncertain,exposed Lith_Contacts
  • LineClass="contact/fault/fold"
  • Confidence="uncertain"
  • Exposure="exposed"
  
contact-uncertain, obscured Lith_Contacts
  • LineClass="contact/fault/fold"
  • Confidence="uncertain"
  • Exposure="obscured"
  
contact-uncertain, concealed Lith_Contacts
  • LineClass="contact/fault/fold"
  • Confidence="uncertain"
  

Gradational Contacts

Description Symbol Feature Classes & Attributes Comment