Open-File Categories and
Numbering Convention
Prefix | Name | Description |
OFBM | Bedrock Geologic Map | Bedrock geologic maps, many with a short text. Associated GIS datasets are packaged with these reports. |
OFEG | Environmental Geology Report | Text, maps, databases, or other materials that focus on environmental interpretations of geologic information. Currently unused. |
OFGA | Geologic Atlas | Text, maps, databases, or other materials that provide a more comprehensive interpretation of regional geology. Currently unused. |
OFGG | General Geology Report | Text, maps, databases, or other materials that cover geologic topics of general interest. |
OFMI | Miscellaneous Investigation | Text, maps, databases, or other materials that are prepared for various purposes, perhaps as the result of an extended service request or other short-term investigation. |
OFMR | Mineral Resource Report | Text, maps, databases, or other materials relating to fuel or nonfuel mineral resources. |
OFOG | Oil and Gas Report | Text, maps, databases, or other materials relating to petroleum. |
OFSM | Surficial Geologic Map | Surficial geologic maps, many with a short text. Associated GIS datasets are packaged with these reports. |
OFWR | Water Resource Report | Text, maps, databases, and other materials with a primary focus on water resources. Currently unused. |
Report numbers follow the prefix, for example, OFSM 04–02.1. The first number before the dash represents the year of release, the two numbers after the dash designate the sequence of the report within the year of publication, and the number after the decimal point indicates the version. A zero (0) after the decimal point would indicate the report has had no revisions. In our example, “04” indicates the open-file surficial geologic map was published in 2004, “02” indicates that it is the second report published in the OFSM series that year, and “1” indicates that the report has undergone one revision.
