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Half Dome Granodiorite traces to early Late Cretaceous. Its age is between 85 and 83.4 (+/-1 to 2%) Ma, with average age of 84.1 Ma. It is younger than Sentinel granodiorite (88.4 Ma), and older than Cathedral Peak granite (83.7 Ma). [4] Half Dome Granodiorite is the Valley's youngest plutonic rock. [5]
The park is over five square kilometres in area and encompasses not only the Chief but also Slhanay, a slightly smaller granitic dome located a short distance to the north-east. Also featured in the park are a walk-in campground and a number of maintained hiking trails which lead through the forest of the Chief's "backside" to several summit areas.
The Half Dome Cable Route hike runs from the valley floor to the top of the dome in 8.2 mi (13 km) (via the Mist Trail), with 4,800 ft (1,460 m) of elevation gain. The length and difficulty of the trail used to keep it less crowded than other park trails, but trail traffic grew to as many as 1,000 people a day, and about 50,000 per year, before ...
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]
The youngest Yosemite Valley pluton is the 87-million-year-old Half Dome granodiorite, which makes up most of the rock at Glacier Point, the Royal Arches, and its namesake, Half Dome. Half Dome from Washburn Point. For the last 30 million years, glaciers have periodically filled much of the valley.
Burnett is the 12th hiker to die while climbing Half Dome since 1995, according to the Mercury News.There have been numerous emergency calls to the 14-mile trail — which has often suffered from ...