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Burns Quarry, near Carrollton, Georgia, NRHP-listed. Address-restricted archeological site, NRHP-listed in Carroll County; Stone Mountain, Georgia, site of granite quarrying from the 1830s. Its granite was used in the locks of the Panama Canal and in steps to the U.S. Capitol building.
Half Dome, a quartz monzonite monolith in Yosemite National Park and part of the Sierra Nevada Batholith. A batholith (from Ancient Greek bathos 'depth' and lithos 'rock') is a large mass of intrusive igneous rock (also called plutonic rock), larger than 100 km 2 (40 sq mi) in area, [1] that forms from cooled magma deep in the Earth's crust.
The Dedham granite was formed during the Ediacaran Period of the Precambrian era about 610 million years ago and is one of the oldest rocks in the Boston basin. [2] Dedham granites to the south and west of the basin are older outcrops from around 630 million years ago, while outcrops to the north of the basin are younger and closer to 596 million years old. [2]
Half Dome, Yosemite, a classic granite dome of the Sierra Nevada Batholith. The Sierra Nevada Batholith is a large batholith that is approximately 400 miles long and 60-80 miles wide which forms the core of the Sierra Nevada mountain range in California, exposed at the surface as granite.
Later hydrothermal vein activity along fault and shear zones within the Butte quartz monzonite and its contact with adjacent rocks, resulted in major ore deposits of lead, zinc, and silver. [2] [3] The Boulder Batholith was named for the prominent rounded boulders that typify its landscape, the result of spheroidal weathering of fractured ...
Between 620 and 610 million years ago (rocks of these ages are southwest and north of Boston respectively) the Dedham granite intruded, contributing foliation in the Burlington mylonite and thin layers of feldspar and recrystallized quartz, while the Westwood granite developed at shallow depth and intruded the Mattapan volcanic rocks.
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