Stanislaus Peak is a prominent peak near

Sonora Pass Sonora Pass (el. 9,624 ft. / 2,933 m.) is a mountain pass in the Sierra Nevada in California. It is the second-highest pass with a road in California and in the Sierra Nevada. It is lower than Tioga Pass to the south. State Route 108 trav ...

in the

Sierra Nevada The Sierra Nevada ( ) is a mountain range in the Western United States, between the Central Valley of California and the Great Basin. The vast majority of the range lies in the state of California, although the Carson Range spur lies primari ...

range in California, United States. It is located in the Carson–Iceberg Wilderness in the federally-managed

Stanislaus National Forest Stanislaus National Forest is a National forest (United States), U.S. national forest which manages of land in four counties in the Sierra Nevada in Northern California. It was established on February 22, 1897, making it one of the oldest natio ...

Geology

Stanislaus peak is an ancient

volcanic cone Volcanic cones are among the simplest volcanic landforms. They are built by ejecta from a volcanic vent, piling up around the vent in the shape of a cone with a central crater. Volcanic cones are of different types, depending upon the nature and s ...

composed of

andesite Andesite () is a volcanic rock of intermediate composition. In a general sense, it is the intermediate type between silica-poor basalt and silica-rich rhyolite. It is fine-grained (aphanitic) to porphyritic in texture, and is composed predomina ...

intrusion. Near the base of the mountain is a

granite Granite ( ) is a coarse-grained (phanerite, phaneritic) intrusive rock, intrusive igneous rock composed mostly of quartz, alkali feldspar, and plagioclase. It forms from magma with a high content of silica and alkali metal oxides that slowly coo ...

outcropping formed during the Late Triassic to Late Cretaceous periods. The granite features are also found in nearby areas, such as

Yosemite National Park Yosemite National Park ( ) is a List of national parks of the United States, national park of the United States in California. It is bordered on the southeast by Sierra National Forest and on the northwest by Stanislaus National Forest. The p ...

and the Emigrant Wilderness.

Hiking

The scramble to the summit of Stanislaus Peak in California

The peak can be hiked via the trail from Saint Mary's Pass near Sonora Pass. The trail ends at the granite outcropping just below the peak and route finding and a class 2 scramble is required to reach the summit via the easiest approach from the southeast face.

References

{{reflist Mountains of Northern California Sierra Nevada (United States) Stanislaus National Forest