West Building of the National Gallery of Art (1941), Washington D.C.
https://commons.wikimedia.org/w/index.php?curid=10130649
Paleozoic – Middle Ordovician – Chickamauga Group – Holston Formation
East Tennessee, Valley and Ridge province
West Building of the National Gallery of Art (1941), Washington D.C.
https://commons.wikimedia.org/w/index.php?curid=10130649
Tennessee “Marble” has been quarried continuously in Tennessee for lime and dimension stone since colonial times in North America. The stone has physical attributes that usually outperform those of metamorphic marble, while not being marble in the geological sense. For more over two centuries, chemists, artists, and architects have favoured it due to its unique physical characteristics and chemical purity. Tennessee has long been considered one of the top three marble-producing states in the union, behind Vermont and Georgia. In 1956, Tennessee was the top marble-producing state in the union. Tennessee “marble” has been utilised in sculpture and for the exterior and interior of significant buildings in at least 35 states in the United States and Canada. It is still in use today.
Wall of Ross marble quarry, Tennessee.
https://commons.wikimedia.org/wiki/File:Ross-marble-quarry-walls-tn1.jpg
Tennessee marble finished; https://commons.wikimedia.org/wiki/File:Tennessee-marble-finished-tn1.jpg
Don W Byerly