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These are shapefiles and final unioned polygon coverages used to calculate coal resources of the A through D coal zones, Yampa coal field, northwestern Colorado. Yamafing was used for the A coal zone, yambfing was used for the B coal zone, etc. Polygons that make up the final unioned polygons include counties, 7.5' quadrangles, townships, surface and coal ownership, leased areas, net coal thickness categories, and overburden categories. The final unioned coverage for each coal zone, was clipped by the resource boundary polygon of each coal zone. These polygons are described in the metadata files for the yam_bnd coverages.
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These are shapefiles and ARC/INFO polygon coverages showing the isopachs of total net coal in beds greater than or equal to 1.2' thick for the A, B, C, and D coal zones in the Williams Fork Formation, Yampa coal field, northwestern Colorado. YAMATHKG is for the A coal zone, YAMBTHKG is for the B coal zone, etc.
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These are shapefiles and coverages of data points used in the assessment of coal zones A, B, C, and D in the Yampa coal field, northwestern Colorado. There are four separate shapefiles, one for coal zone. Yama_pts is for the A coal zone, yamb_pts is for the B coal zone, etc.
    map background search result map search result map Anticlines and synclines of the Yampa Coal Field (yamclineg) Faults in the Yampa coal field, 2000 Colorado Plateau Coal Assessment (yamfltg) Geology of the Yampa coal field, Northwestern Colorado (yamgeolg) Active and inactive mines in the Yampa coal field Structure contours on top of the Trout Creek Sandstone, Yampa coal field, CO (yamstrcg) Final unioned files for Yampa coal field resource calculations, northwestern Colorado (yam*fing) Data point (drill locations) locations used in assessing coals in the Yampa coal field (yam*ptg) Isopachs of total net coal in A-D coal zones, Yampa Coal Field (yam*thkg) Data point (drill locations) locations used in assessing coals in the Yampa coal field (yam*ptg) Anticlines and synclines of the Yampa Coal Field (yamclineg) Final unioned files for Yampa coal field resource calculations, northwestern Colorado (yam*fing) Isopachs of total net coal in A-D coal zones, Yampa Coal Field (yam*thkg) Structure contours on top of the Trout Creek Sandstone, Yampa coal field, CO (yamstrcg) Active and inactive mines in the Yampa coal field Faults in the Yampa coal field, 2000 Colorado Plateau Coal Assessment (yamfltg) Geology of the Yampa coal field, Northwestern Colorado (yamgeolg)