Boundary of the southwestern Nevada volcanic field from Laczniak and others (1996), for the Death Valley regional ground-water flow system study, Nevada and California
This digital data set defines the boundary of the southwestern Nevada volcanic field (SWNVF), 
an area of thick, regionally distributed volcanic rocks within the Death Valley regional ground-
water flow system (DVRFS), a 100,000-square-kilometer region of southern Nevada and California. 
The SWNVF boundary encompasses …