Ferricrete, manganocrete, and bog iron occurrences with selected sedge bogs and active iron bogs and springs in the upper Animas River watershed, San Juan County, Colorado

Online link https://geo-nsdi.er.usgs.gov/metadata/map-mf/2406/metadata.faq.html
Description During 1996 to 2000, the Bureau of Land Management, National Park Service, Environmental Protection Agency, United States Department of Agriculture (USDA) Forest Service, and the U.S. Geological Survey (USGS) developed a coordinated strategy to (1) study
Originators Yager, Douglas B.; Church, Stanley E.; Verplanck, Philip L.; and Wirt, Laurie
Publication U.S. Geological Survey Miscellaneous Field Studies Map MF-2406

Related topics

States or counties

Overview of attributes

DATABASE STRUCTURE--The database structure of the map
consists of two coverages.  These coverages include the
"FRCT" and the "BOG" coverage.  They have the following
INFO attribute items.
>AREA
>PERIMETER
>FRCT#
>FRCT-ID
>DEP_TYPE
>SYMBOL
>
>AREA
>PERIMETER
>BOG#
>BOG-ID
>DEP_TYPE
>SYMBOL
The FRCT coverage contains all contact lines and label
points for each polygon related to the ferricrete data, and
the BOG coverage contains all contact lines and label points
for each polygon related to the bogs and springs data.  The
FRCT.PAT and BOG.PAT INFO files have the non-common
attribute field for DEP_TYPE.  DEP_TYPE is a text field that
describes each deposit type polygon and each poly line.  Two
shapefiles each comprise the ferricrete and bogs and springs
features.  The ferricrete poly and arc features are included
in the "frct.shp" and "frcta.shp" shapefiles, respectively.
The bog and spring features are included in the bog.shp and
boga.shp shapefiles, respectively.
The following detailed overview discusses the non-common
attribute DEP_TYPE included in the FRCT and the BOG
coverages that comprise the ferricrete and iron bogs and
springs coverages and the frct.shp, frcta.shp, bog.shp, and
boga.shp shapefiles.
The INFO files FRCT.PAT and FRCT.AAT have populated
attribute fields for item DEP_TYPE and SYMBOL.  The INFO
items DEP_TYPE and SYMBOL are populated with corresponding
text that identifies each unique mapped deposit type and its
corresponding map symbol.  These ferricrete DEP_TYPE and
corresponding SYMBOL attributes are as follows.
>af   Alluvial ferricrete
>cf   Colluvial ferricrete
>uf   Undifferentiated ferricrete
>mncf Colluvial manganocrete
>mnaf Alluvial manganocrete
>tf   Transitional colluvial manganocrete and ferricrete
>bi   Bog iron
The INFO files BOG.PAT and BOG.AAT have populated attribute
fields for item DEP_TYPE and SYMBOL.  The INFO items
DEP_TYPE and SYMBOL are populated with corresponding text
that identifies each unique mapped deposit type and its
corresponding map symbol.  These bog and spring DEP_TYPE and
corresponding SYMBOL attributes are as follows.
>sb  Sedge bog
>spi Iron spring
>ib  Iron bog
>ub  Undifferentiated bog

http://pubs.usgs.gov/mf/2003/mf-2406/mf-2406_508.pdf