10/16/2026
We’re excited to share two beautiful new geologic maps this ! 🗺️ Many thanks to the talented geologists, cartographers, and GIS analysts who make these maps possible.
Geologic map of the Cobre SE Quadrangle, Elko county, Nevada
by Linda L. Berg, David M. Miller, and Sharon Gusa
https://pubs.nbmg.unr.edu/Geologic_map_of_the_Cobre_SE_Quadrangle_Elko_coun_p/m195.htm
The Geologic Map of the Cobre SE quadrangle, Elko County, Nevada, explores the geology of the northern Toano Range, where mountain-building processes and ancient lake systems have helped shape the landscape. The map highlights the region’s complex rock formations and geologic structures, as well as distinctive shoreline deposits left behind by ancient Lake Bonneville to the east and Lake Waring to the west. This work contributes to a broader understanding of the region’s geologic history and the forces that shaped northeastern Nevada.
Geologic map of the Ruby Dome Quadrangle, Elko county, Nevada
by Keith A. Howard, Andrew T. Strike, Arthur W. Snoke, and Calvin G. Barnes
https://pubs.nbmg.unr.edu/Geologic_Map_of_the_Ruby_Dome_Quadrangle_Elko_Cou_p/m196.htm
The Geologic Map of the Ruby Dome quadrangle, Elko County, Nevada, offers a detailed look at the complex geologic history preserved within the Ruby Mountains–East Humboldt Range metamorphic core complex. The map reveals an intricate network of ancient metamorphosed rocks, granite intrusions, and folded and faulted structures that record millions of years of tectonic activity. Adding another layer to this story, the landscape was extensively shaped by Ice Age glaciers, which carved alpine valleys, deposited moraines, and left behind lakes that continue to provide insights into past climate conditions.
Go check out these and other newly released NBMG publications at: https://pubs.nbmg.unr.edu/nbmg_s/1844.htm