已收录 273079 条政策
 政策提纲
  • 暂无提纲
The Lithia Pegmatites of Pala and Mesa Grande, San Diego County, California
[摘要] The Mesa Grande and Pala regions, with which this report is chiefly concerned, both lie in the northern part of San Diego County. In an airline Pala is 80 miles southeast of Los Angeles and 45 miles northeast of San Diego. By road these distances are 100 and 55 miles, respectively. Mesa Grande in an airline is 105 miles southeast of Los Angeles and 40 miles northeast of San Diego. Along the most convenient route from Los Angeles to Mesa Grande the distance is 135 miles; from San Diego, 55 miles. Most of the other localities mentioned in this report are in the north-central part of San Diego County; two, Nuevo and Coahuila, are in Riverside County southeast of Riverside.The relative position of these places may be seen in the accompanying map showing the location of the principal pegmatite localities in southern California.
[发布日期]  [发布机构] University:California Institute of Technology;Department:Geological and Planetary Sciences
[效力级别]  [学科分类] 
[关键词] Geology [时效性] 
   浏览次数:3      统一登录查看全文      激活码登录查看全文