National Assessment of Oil and Gas Project - Uinta-Piceance Province (020) Tar Sand Deposits

Tar sands represent a significant source of hydrocarbons in the United States. Also known by several other names including bitumen-bearing rocks, natural asphalt, tarry oil, bituminous rock, oil sands and rock asphalt, these rocks are mostly located on the margins of sedimentary basins. Maps of tar sands and deposits were digitized to illustrate their distribution and extent within the Total Petroleum System.

油砂（tar sands）是美国境内一类重要的烃类资源。该类岩层另有多个别称，涵盖含沥青岩、天然沥青、焦油油、沥青岩、油砂以及岩沥青。此类岩层多分布于沉积盆地的边缘地带。本数据集对油砂及其矿床的分布图进行了数字化处理，以展示其在全油气系统（Total Petroleum System）内的分布范围与延展规模。