The Tuolumne Intrusive Suite is one of several intrusive suites in

Yosemite National Park Yosemite National Park ( ) is an American national park in California, surrounded on the southeast by Sierra National Forest and on the northwest by Stanislaus National Forest. The park is managed by the National Park Service and covers an ar ...

. These also include # Fine Gold Intrusive Suite # Intrusive Suite of Buena Vista Crest # Intrusive Suite of Jack Main Canyon # Intrusive Suite of Merced Peak # Intrusive Suite of Sonora Pass # Intrusive Suite of Yosemite Valley Map of Yosemite National Park

The age and composition of the Tuolumne Intrusive Suite

The Tuolumne Intrusive Suite is the youngest and most extensive of the intrusive suites of Yosemite National Park, and also comprises about 1/3 of the park's area, is the most extensive intrusive suite in the Park. It contains rock types including

Half Dome Granodiorite Half Dome Granodiorite is granodiorite (see also granite) found in a region on and near Half Dome, in Yosemite National Park, California, United States. The granodiorite forms part of the Tuolumne Intrusive Suite (aka Tuolumne Batholith), one o ...

and

Cathedral Peak Granite The Cathedral Peak Granodiorite (CPG) was named after its type locality, Cathedral Peak in Yosemite National Park, California. The granodiorite forms part of the Tuolumne Intrusive Suite (Tuolumne Batholith), one of the four major intrusive suit ...

, also,

Kuna Crest Granodiorite Kuna Crest Granodiorite (also called ''Granodiorite of Glen Aulin''), is found, in Yosemite National Park, United States. The granodiorite forms part of the Tuolumne Intrusive Suite (aka Tuolumne Batholith), one of the four major intrusive suites ...

. Oldest to youngest rocks are #

, #

Cathedral Peak Granodiorite The Cathedral Peak Granodiorite (CPG) was named after its type locality, Cathedral Peak in Yosemite National Park, California. The granodiorite forms part of the Tuolumne Intrusive Suite (Tuolumne Batholith), one of the four major intrusive suit ...

(which is about 86 million years old), to #

Johnson Granite Porphyry Johnson is a surname of Anglo-Norman origin meaning "Son of John". It is the second most common in the United States and 154th most common in the world. As a common family name in Scotland, Johnson is occasionally a variation of ''Johnston'', a ...

. The youngest, smallest, and most central rock body is of the Johnson Granite Porphyry, a variety of porphyry. The southwestern part of the Tuolumne Intrusive Suite is made up of Half Dome Granodiorite.

The Tuolumne Intrusive Suite and Cathedral Peak Granodiorite

The largest

pluton In geology, an igneous intrusion (or intrusive body or simply intrusion) is a body of intrusive igneous rock that forms by crystallization of magma slowly cooling below the surface of the Earth. Intrusions have a wide variety of forms and com ...

of the Tuolumne Intrusive Suite is

, which extends long distances both the north and south of

Tuolumne Meadows Tuolumne Meadows () is a gentle, granitic dome, dome-studded, sub-alpine meadow area along the Tuolumne River in the eastern section of Yosemite National Park in the United States. Its approximate location is . Its approximate elevation is . The ter ...

References

External links and references

Roadside geology, in Tuolumne Meadows, with the Tuolumne Intrusive Suite
Geology of California Geology of Yosemite National Park {{geology-stub

The age and composition of the Tuolumne Intrusive Suite

The Tuolumne Intrusive Suite and Cathedral Peak Granodiorite

See also

References

External links and references