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2. List of quarries in the United States - Wikipedia

   en.wikipedia.org/wiki/List_of_quarries_in_the...

   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.

3. Pikes Peak granite - Wikipedia

   en.wikipedia.org/wiki/Pikes_Peak_granite

   Pikes Peak granite is a 1.08 billion year old Late-Precambrian geologic formation found in the central part of the Front Range of Colorado. It is a coarse-grained pink to light red syenogranite with minor gray monzogranite , and it has a distinctive brick-red appearance where it outcrops.

4. Granite - Wikipedia

   en.wikipedia.org/wiki/Granite

   Granite (/ ˈ ɡ r æ n ɪ t / GRAN-it) is a coarse-grained intrusive igneous rock composed mostly of quartz, alkali feldspar, and plagioclase.It forms from magma with a high content of silica and alkali metal oxides that slowly cools and solidifies underground.

5. Archaeologists Uncovered Remnants of History Lost at the ...

   www.aol.com/archaeologists-uncovered-remnants...

   Ruins of the Roman-era port of Aquileia have been submerged in northeast Italy’s Grado Lagoon for some time as the waters of the Adriatic Sea swallowed the coastal remnants of history. But ...

6. Exfoliation joint - Wikipedia

   en.wikipedia.org/wiki/Exfoliation_joint

   Exfoliation joints in granite at Enchanted Rock State Natural Area, Texas, US. Detached blocks have slid along the steeply-dipping joint plane. Exfoliation joints or sheet joints are surface-parallel fracture systems in rock, often leading to the erosion of concentric slabs.

7. Mineralogy of the Pikes Peak Region - Wikipedia

   en.wikipedia.org/wiki/Mineralogy_of_the_Pikes...

   Scientists from around the world come to Colorado to study the minerals of this region. Because the granite covers a large portion of the Colorado Front Range, there are good mineral collecting areas scattered all over the Pikes Peak region. The collecting localities range from near Colorado Springs on the south to just west of Denver on the north.