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Nopah Trilobite Quarry
Rocks and Geology Around Las Vegas
Nopah Trilobite Quarry

The Nopah Trilobite Quarry consists of two small sites with outcrops of fossil-bearing shale along the Old Spanish Trail Highway in California southwest of Pahrump, Nevada. Trilobites here occur in the Lower Cambrian Pyramid Shale Member of the Carrara Formation, in greenish shales and maroon siltstones dating from about 518 mya. Few specimens are intact, but it is easy to find legs and head shields from three members of the genus Olenellus. Link to more information.

Access to the site is via a paved highway, 0.3 miles west of Emigrant Pass. The quarry sites are in roadcuts, but a parking area allows fossil hunters to park safely off the road. The area has been quarried for years, so look for quarry pits and discard piles. From the parking area (Table 1, Site 1607), there is a productive roadcut uphill along the highway (Upper Site; Site 01), and another productive area downhill and just off the highway (Lower Site; Site 02).

Link to map.

Nopah Trilobite Quarry
Old Spanish Trail Highway approaching the quarry sites (view W)
Nopah Trilobite Quarry
OST Highway, vehicle opposite upper quarry site (view W)
Nopah Trilobite Quarry
Visitors at upper quarry site (view W)
Nopah Trilobite Quarry
Visitor at upper quarry site (view S)
Nopah Trilobite Quarry
Visitor at upper quarry site (view SW)
Nopah Trilobite Quarry
Visitor at upper quarry site (view SE)
Nopah Trilobite Quarry
Old Spanish Trail Highway approaching parking area (view W)
Nopah Trilobite Quarry
Old Spanish Trail Highway at parking area (view W)
Nopah Trilobite Quarry
Lower quarry site (view W from parking area)
Nopah Trilobite Quarry
Upper quarry site (view E from parking area)
Nopah Trilobite Quarry
Visitors at lower quarry site (view NE)
Nopah Trilobite Quarry
Visitors at lower quarry site (view SW)
Nopah Trilobite Quarry
Old Spanish Trail Highway approaching parking area (view E)
Nopah Trilobite Quarry
Typical specimen: fragments
Nopah Trilobite Quarry Nopah Trilobite Quarry
Nopah Trilobite Quarry Nopah Trilobite Quarry
Nopah Trilobite Quarry Nopah Trilobite Quarry
Nopah Trilobite Quarry Nopah Trilobite Quarry
Nopah Trilobite Quarry Nopah Trilobite Quarry
Nopah Trilobite Quarry Nopah Trilobite Quarry
Nopah Trilobite Quarry Nopah Trilobite Quarry

Table 1. Highway and Hiking Coordinates based on GPS Data (NAD27). Download GPS Waypoints (gpx) file.

Site Location UTM Easting UTM Northing Latitude (N) Longitude (W) Elevation (ft) Verified
1607 Nopah Trilobite Quarry Parking 584498 3971347 35.88455 116.06386 2,746 Yes
01 Upper Quarry Site 584543 3971318 35.88428 116.06337 2,759 Yes
02 Lower Quarry Site 584440 3971380 35.88484 116.06450 2,728 Yes

Note: All distances, elevations, and other facts are approximate.
copyright; Last updated 150708

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