Utah FORGE: Temperature Contours at 200 m

The individual shapefiles in this dataset delineate estimated temperature contours (20, 40, 60, and 80 deg C) at a depth of 200 m in the Milford, Utah FORGE area. Contours were derived from 86 geothermal, gradient, and other wells drilled in the area since the mid-1970s with depths greater than 50 m. Conductive temperature profiles for wells less than 200 m were extrapolated to determine the temperature at the desired depth. Because 11 wells in the eastern section of the study area (in and around the Mineral Mountains) are at higher elevations compared to those closer to the center of the basin, temperature profiles were extrapolated to a constant elevation of 200 m below the 1830 m (6000 ft) a.s.l. datum (approximate elevation of alluvial fans at the base of the Mineral Mountains) to smooth the contours across the ridges and valleys.

本数据集内的单个形状文件（shapefile）划定了犹他州米尔福德FORGE区域内200米深度处的估算温度等值线，对应温度分别为20、40、60和80摄氏度。该等值线基于1970年代中期以来在该区域钻取的86口地热井、梯度井及其他深度大于50米的钻井数据生成；对于深度不足200米的钻井，通过外推其传导型温度剖面以获取目标深度处的温度值。由于研究区东部（矿山脉范围内及周边）的11口钻井相较于靠近盆地中心的钻井海拔更高，因此将所有温度剖面外推至以海拔1830米（6000英尺，a.s.l.）基准面（datum）以下200米的恒定高程，该基准面为矿山脉底部冲积扇的近似海拔，以此实现等值线在山脊与山谷间的平滑过渡。