GM-1 — Geologic map of Hillsboro Peak Thirty-minute Quadrangle, New Mexico

By Frederick J. Kuellmer, 1959, scale 1:126,720.

This map extends from City of Rocks State Park to northeast of Hillboro, New Mexico. The rocks exposed in this area include Precambrian basement, a significant Paleozoic section, Cretaceous sediments, and extensive Tertiary volcanic an intrusive rocks. The region surrounding the towns of Hillsboro, Kingston, and Lake Valley has a long history of mining and mineral exploration. Source data for this map include Bulletins 33, 37, and 38.

Related 30-minute geologic maps of this region include:

• GM-2 — Luera Spring
• GM-3 — Piñonville
• GM-5 — Datil
• GM-6 — Cañon Largo
• GM-10 — Mogollon
• GM-12 — Reserve
• GM-13 — Alum Mountain
• GM-14 — Las Cruces
• GM-15 — Virden
• GM-23 — Pelona