Intrusive Suite of Sonora Pass
geological formation in Yosemite National Park, USA
The Intrusive Suite of Sonora Pass (also, the Sonora Pass Intrusive Suite) is one of several intrusive suites in Yosemite National Park. 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 Yosemite Valley
Tuolumne Intrusive Suite
The Intrusive Suite of Sonora Pass is ~92-89 Ma, and is the northernmost of four large Late Cretaceous zoned intrusive suites in the central Sierra Nevada batholith.
Rock types
On a large scale, it is composed of Kinney Lakes granodiorite and the younger Topaz Lake granodiorite.
On a finer scale, the Intrusive Suite of Sonora Pass is made of light-gray, coarse-grained biotite granodiorite, plus granite with roughly equant, well-formed potassium feldspar phenocrysts composing about 2–10% of the rock. Quartz usually occurs in clots of 0.5 centimetres (0.20 in). The mafic mineral content is about 10%.
This brief starts where responsible research should: with the source description of “Intrusive Suite of Sonora Pass” as geological formation in Yosemite National Park, USA. Everything that follows is an evidence route, not borrowed authority.
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The subject matters to the places & architecture register because the source frames it as geological formation in Yosemite National Park, USA. Its deeper value depends on whether names, dates, institutions and citations support that framing.
Maps, plans, fabric surveys and administrative records can establish how the site’s name, extent and function changed over time. The source revision retrieved here is dated Sep 2, 2025. The linked authority identifier is Q60769452. None of the 0 selected statements returned an explicit reference.
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This entry incorporates text from “Intrusive Suite of Sonora Pass” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.