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首页> 美国政府科技报告 >Petrography of Some Rock Types of thenPrecambrian Basement Near the Los AlamosnScientific Laboratory Geothermal Test Site,nJemez Mountains, New Mexico
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Petrography of Some Rock Types of thenPrecambrian Basement Near the Los AlamosnScientific Laboratory Geothermal Test Site,nJemez Mountains, New Mexico

机译：新墨西哥州新泽西州洛斯阿拉莫斯科学实验室地热试验场附近的一些岩石类型的岩石类型的岩石地下室

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摘要

The proposed geothermal energy experiment by the Los Alamos Scientific Laboratory is to be conducted in Precambrian rocks underlying the Jemez Plateau, New Mexico. This study describes 25 samples from 152 ft of drill core taken from Granite Test Hole One, and 12 examples of Precambrian rocks of the region not far distant from the proposed geothermal test site.nThe upper 94 ft of Precambrian rock in the test hole is granite and granodiorite, partly gneissic in texture. The lower 61 ft is biotite-amphibolite veined by tonalite-aplite.nAH cracks observed in thin section follow thin calcite veins. In hand specimen, chlorite-lined fracture surfaces are also present.nRocks of the drill core provide a good variety of compositions representa-tive of many of the rock types collected for this study from regional localities (Sandia Mountains, San Pedro Mountain, Soda Dam, Guadalupe Box, and the Nacimiento Mountains). As fresh samples, they will provide suitable material for hydrothermal experiments.nThe presence of "red granite" xenoliths in pyroclastic rocks of the Jemez Plateau, and the predominance of granitoic rocks over amphibolite in regional outcrops suggest that granitic rocks arc the predominant rock type below the test site.

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  • 作者

    Priscilla C. Perkins;

  • 作者单位
  • 年度 1973
  • 页码 1-15
  • 总页数 15
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 工业技术;
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