Preliminary geologic map of the Point Dume 7.5' quadrangle, southern California: A digital database

This Open-File report is a digital geologic map database. This
digital map database is compiled from previously published sources
combined with some new mapping and modifications in nomenclature.
The geologic map database delineates map units that are identified
by general age and lithology following the stratigraphic
nomenclature of the U. S. Geological Survey. For detailed
descriptions of the units, their stratigraphic relations and
sources of geologic mapping consult Campbell et al. (1996).

本公开文件报告所呈现的是一套数字地质图数据库。该数据库整合了既往已发表的相关资料，同时纳入了部分新填绘的地质图件以及命名法修订内容。
本地质图数据库依据美国地质调查局（U. S. Geological Survey）的地层命名规范，以大致地质年代与岩性为识别依据，对各类图件单元进行划分与标注。
若需了解图件单元的详细描述、地层接触关系以及地质填绘资料来源，请参阅Campbell等人（1996）的研究成果。