Areas where geologic conditions are more favorable for current underground mining technology in the Kaiparowits Plateau study area, southern Utah (kaisumg )

This is a coverage that shows areas in the Kaiparowits
Plateau where geologic conditions in the Calico and
A-sequences are more favorable for current underground
mining technology (Hettinger and other, chap. T). This
coverage contains numerous attributes of information. It was
compiled by computing the geometric intersection of nine
polygon coverages using the ARC/INFO UNION command. This
coverage is characterized as being a GUIDE TO WHERE THE MORE
FAVORABLE COAL AREAS ARE LIKELY TO BE for current
underground mining technology: areas where coal beds in the
Calico and A-sequences are greater than 3.5 feet thick, less
than 3,000 feet deep, and inclined by less than 12 degrees,
as described in Hettinger and others, 1999. Additional work
is required to determine the mineability and economics of
these coal deposits.

The outside polygon defines the base of the coal-bearing
Calico and A-sequences of the Straight Cliffs Formation east
of 112 degrees of longitude. The northern boundary is
delineated by the Paunsaugunt fault and volcanic rocks of
Tertiary age. This polygon includes areas where the
coal-bearing Calico and A-sequences have been partially
eroded.

本数据集为一幅矢量覆盖图层，展示了凯帕罗维茨高原（Kaiparowits Plateau）上，卡利科层序与A层序（Calico and A-sequences）的地质条件更适配当前地下采矿技术的区域（Hettinger等人，第T章）。该覆盖图层包含丰富的信息属性，通过使用ARC/INFO软件的UNION命令对9个多边形覆盖图层进行几何相交运算后合成得到。
本覆盖图层的定位为适配当前地下采矿技术的优质煤炭资源潜力区域指南：具体判定标准为卡利科层序与A层序内的煤层厚度大于3.5英尺、埋藏深度小于3000英尺、倾角小于12°，相关标准详见Hettinger等人1999年的研究成果。仍需开展额外工作以评估此类煤炭矿床的可采性与经济价值。
外多边形界定了东经112°以东、直崖组（Straight Cliffs Formation）含煤的卡利科层序与A层序的基底范围。其北部边界由泡恩桑古特断层（Paunsaugunt fault）与第三纪火山岩划定。该多边形覆盖范围内包含含煤的卡利科层序与A层序已遭受部分侵蚀的区域。