The Geologic Data Subcommittee (GDS) of the Federal Geographic Data Committee (FGDC) is responsible for coordination of geologic data-related activities

FGDC Digital Cartographic Standard for
Geologic Map Symbolization

Log of revisions to the Standard:

Most recent revision: 3/7/10 (Section 17)

  • Entire document, including Color Chart and Pattern Chart:
    • 3/7/10 -- correction to symbols 17.63 and 17.64 (they were transposed)
    • 9/10/09 -- minor typographic corrections in Sections 2, 5, 21, and 22
    • 5/22/08 -- correction to a pattern in Section 14
    • 9/5/07 -- addition of brief explanations to Color Chart and Pattern Chart
    • 5/28/07 -- minor corrections to symbol descriptions in Sections 2, 6, and 18
    • 4/24/07 -- minor corrections to Sections 2, 5, 13, 19, 22, 25, 26, 30, and 35; revisions to Acknowledgments section in introductory text
    • 2/5/07 -- corrections to Preface to Appendix A and Section 29; additional minor editorial corrections (including filename changes)
  • Entire document, without Color Chart and Pattern Chart:
    • 3/7/10 -- correction to symbols 17.63 and 17.64 (they were transposed)
    • 9/10/09 -- minor typographic corrections in Sections 2, 5, 21, and 22
    • 5/22/08 -- correction to a pattern in Section 14
    • 5/28/07 -- minor corrections to symbol descriptions in Sections 2, 6, and 18
    • 4/24/07 -- minor corrections to Sections 2, 5, 13, 19, 22, 25, 26, 30, and 35; revisions to Acknowledgments section in introductory text
    • 2/5/07 -- corrections to Preface to Appendix A and Section 29; additional minor editorial corrections
  • Introductory text:
    • 4/24/07 -- revisions to Acknowledgments section
  • Index to symbols in Appendix A and to topics in introductory text:
    • 2/5/07 -- minor editorial corrections
  • Preface to Appendix A:
    • 2/5/07 -- editorial corrections to Table 2
  • Section 2 -- Faults:
    • 9/10/09 -- minor typographic corrections in Notes on Usage column on p. A-2-2, A-2-5, A-2-9, A-2-10, and A-2-11
    • 5/28/07 -- minor correction to a symbol description on p. A-2-14
    • 4/24/07 -- minor lineweight correction on p. A-2-11
  • Section 5 -- Folds:
    • 9/10/09 -- minor typographic corrections in Notes on Usage column on p. A-5-13
    • 4/24/07 -- minor lineweight correction on p. A-5-8
  • Section 6 -- Bedding:
    • 5/28/07 -- minor corrections to four symbol descriptions on p. A-6-2
  • Section 13 -- Glacial and Glaciofluvial Features:
    • 4/24/07 -- minor lineweight correction on p. A-13-1
  • Section 14 -- Periglacial Features:
    • 5/22/08 -- corrected pattern in the Symbol column for Ref. No. 14.3 (polygonal patterned ground) on p. A-14.1. Information in the Carto. Specs. column is unchanged
  • Section 17 -- Landslide and Mass-Wasting Features:
    • 3/7/10 -- correction to symbols 17.63 and 17.64 (they were transposed)
  • Section 18 -- Volcanic Features:
    • 5/28/07 -- minor correction to a symbol description on p. A-18-3
  • Section 19 -- Natural Resources:
    • 4/24/07 -- minor lineweight corrections on p. A-19-3 and A-19-5
  • Section 21 -- Neotectonic and Earthquake-Hazard Features:
    • 9/10/09 -- minor typographic corrections in Notes on Usage column on p. A-21-1 and A-21-2
  • Section 22 -- Plate-Tectonic Features:
    • 9/10/09 -- minor typographic corrections in Notes on Usage column on p. A-22-1
    • 4/24/07 -- minor lineweight corrections on p. A-22-1 and A-22-2
  • Section 25 -- Planetary Geology Features:
    • 4/24/07 -- minor lineweight corrections on p. A-25-3 and A-25-5
  • Section 26 -- Geohydrologic Features:
    • 4/24/07 -- minor lineweight correction on p. A-26-4
  • Section 29 -- Boundaries:
    • 2/5/07 -- corrections to type style for national, state, and county (etc.) boundaries
  • Section 30 -- Topographic and Hydrographic Features:
    • 4/24/07 -- minor lineweight corrections on p. A-30-4 and A-30-6
  • Section 35 -- Bar Scales:
    • 4/24/07 -- minor lineweight corrections on p. A-35-1, A-35-2, A-35-3, A-35-4, and A-35-5
  • CMYK Color Chart:
    • 9/5/07 -- addition of brief explanation to header in upper left-hand corner
    • 2/5/07 -- filename change (from "...platea.pdf" to "...culorchart.pdf")
  • Pattern Chart:
    • 9/5/07 -- addition of brief explanation to header in upper left-hand corner
    • 2/5/07 -- filename change (from "...plateb.pdf" to "...patternchart.pdf")

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