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. The Suite includes Half Dome Granodiorite, Cathedral Peak Granite, and Kuna Crest Granodiorite.^[1]

Tuolumne Intrusive Suite
Stratigraphic range: Late Cretaceous, 91–82 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Type	Suite
Lithology
Primary	Granodiorite
Location
Region	Yosemite National Park
Country	United States
Type section
Named for	Tuolumne Meadows
The Tuolumne Intrusive Suite contains the words Yosemite National Park

The largest pluton of the Tuolumne Intrusive Suite is Cathedral Peak Granodiorite, which extends long distances both the north and south of Tuolumne Meadows.^[2] The southwestern part of the Tuolumne Intrusive Suite is made up of Half Dome Granodiorite.^[2] The youngest, smallest, and most central rock body is of the Johnson Granite Porphyry^[2]

Age

From oldest to youngest, the rock units are^[3]

1. Kuna Crest Granodiorite 91-88 Ma^[4]
2. Half Dome Granodiorite 85–83.4 Ma^[5]
3. Cathedral Peak Granodiorite 83.7 Ma^[5]
4. Johnson Granite Porphyry 82.4 Ma^[5]

See also

• Fine Gold Intrusive Suite
• Intrusive Suite of Buena Vista Crest
• Intrusive Suite of Merced Peak
• Intrusive Suite of Sonora Pass
• Intrusive Suite of Yosemite Valley
• Johnson Granite Porphyry