Quaternary deposits of the 9-county San Francisco Bay Region: an areally continuous digital map database prepared from Knudsen and others (2000) and Witter and others (2006)

This digital map database provides an areally continuous representation of the Quaternary surficial deposits of the San Francisco Bay region merged from the database...本数字地图数据库整合自相关数据集，提供了旧金山湾地区第四纪表层沉积物（Quaternary surficial deposits）的面域连续分布表征。