The following attributes were exported from Filemaker as a .dbf:
orig_label, map_symbol2, unit_link, reference_id, unit_age, rocktype1,
and rocktype2.
orig_label reflects the original map symbol used on the source map
map_symbol2 reflects map-symbol1 with the addition of a province number
unit_link is an auto generated field based on map-symbol2 and the state
abbreviation (e.g. IN001) that produces a unique identifier for each map unit
reference_id was populated with an alphanumeric code (e.g. US001) that
designates the source used for the linework and other references used to describe
the age or lithologies of the unit.
unit_age was populated with general age assignment
rocktype1 records dominant lithology (must be >50% of unit), using
standardized data dictionary
rocktype2 records second most dominant lithology, using standardized data
dictionary
The attributes were then converted using the following structure:
item name: orig_label
width: 12
output: 12
type: c
item name: sgmc_label
width: 16
output: 16
type: c
item name: unit_link
width: 18
output: 18
type: c
item name: source
width: 6
output: 8
type: c
item name: unit_age
width: 60
output: 60
type: c
item name: rocktype1
width: 40
output: 40
type: c
item name: rocktype2
width: 40
output: 40
type: c
U.S. Department of the Interior |
U.S. Geological Survey