Tuolumne Intrusive Suite

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Tuolumne Intrusive Suite
Stratigraphic range: Late Cretaceous, 91–82  Ma
Type Suite
Lithology
Primary Granodiorite
Location
Region Yosemite National Park
CountryUnited States
Type section
Named for Tuolumne Meadows
Map of Yosemite National Park.svg
The Tuolumne Intrusive Suite contains the words Yosemite National Park

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]

Contents

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

Related Research Articles

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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, one of the four major intrusive suites within the Sierra Nevada. It has been assigned radiometric ages between 88 and 87 million years and therefore reached its cooling stage in the Coniacian.

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<span class="mw-page-title-main">Kuna Crest Granodiorite</span> Kuna Crest Granodiorite, Granodiorite of Glen Aulin is a granodiorite found Yosemite National Park

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The Intrusive Suite of Buena Vista Crest is an intrusive suite which extends 30 kilometres (19 mi) southward, from Yosemite Valley to Yosemite National Park's southeastern boundary, into plutons of the Sierra Nevada Batholith, which are slightly older. These intrusive suites also include

  1. Fine Gold Intrusive Suite
  2. Intrusive Suite of Jack Main Canyon
  3. Intrusive Suite of Merced Peak
  4. Intrusive Suite of Sonora Pass
  5. Intrusive Suite of Yosemite Valley
  6. Tuolumne Intrusive Suite
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  1. Fine Gold Intrusive Suite
  2. Intrusive Suite of Buena Vista Crest
  3. Intrusive Suite of Jack Main Canyon
  4. Intrusive Suite of Merced Peak
  5. Intrusive Suite of Sonora Pass
  6. Tuolumne Intrusive Suite
  7. Johnson Granite Porphyry
<span class="mw-page-title-main">Intrusive Suite of Sonora Pass</span> Intrusive Suite of Sonora Pass is one of several intrusive suites in Yosemite National Park

The Intrusive Suite of Sonora Pass is one of several intrusive suites in Yosemite National Park. These also include

  1. Fine Gold Intrusive Suite
  2. Intrusive Suite of Buena Vista Crest
  3. Intrusive Suite of Jack Main Canyon
  4. Intrusive Suite of Merced Peak
  5. Intrusive Suite of Yosemite Valley
  6. Tuolumne Intrusive Suite
<span class="mw-page-title-main">Johnson Peak</span> Johnson Peak is mountain peak, in Yosemite National Park, in the Tuolumne Meadows area

Johnson Peak is the highest mountain, in Tuolumne Meadows, Yosemite National Park.

<span class="mw-page-title-main">Hiking, rock climbing, and mountain climbing around Tuolumne Meadows</span>

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<span class="mw-page-title-main">Kuna Crest</span> Mountain range near Tuolumne Meadows, in Yosemite National Park, California

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<span class="mw-page-title-main">Intrusive Suite of Merced Peak</span> Intrusive Suite of Merced Peak is an intrusive suite, of Yosemite National Park

The Intrusive Suite of Merced Peak is one of several intrusive suites in Yosemite National Park. These also include:

  1. Fine Gold Intrusive Suite
  2. Intrusive Suite of Buena Vista Crest
  3. Intrusive Suite of Jack Main Canyon
  4. Intrusive Suite of Sonora Pass
  5. Intrusive Suite of Yosemite Valley
  6. Johnson Granite Porphyry
  7. Tuolumne Intrusive Suite

Johnson Granite Porphyry is found in Tuolumne Meadows, Yosemite National Park.

References

  1. "Granite". NPS. Retrieved 28 December 2018.
  2. 1 2 3 Huber, N. King (1987). "The Geologic Story of Yosemite National Park (1987)". yosemite.ca.us. Retrieved 28 December 2018.
  3. Peck, DL (1980). Geologic map of the Merced Peak quadrangle, central Sierra Nevada, California (Map). 1:62,500. U.S. Geological Survey. Geologic Quadrangle Map GQ-1531.
  4. Bateman, PC (1992). "Plutonism in the central part of the Sierra Nevada batholith". California: U.S. Geological Survey. Professional Paper 1483.
  5. 1 2 3 Evernden, JF; Curtis, GH; Lipson, J (1957). "Potassium-argon dating of igneous rocks". American Association of Petroleum Geologists Bulletin. 41 (9): 2120–2127. doi:10.1306/0BDA596C-16BD-11D7-8645000102C1865D.