Spheroidally weathered boulders of syenite associated with the Concord Ring Dike.  Photograph taken at former borrow pit south of the Stonewall Jackson School in Concord.  Photograph by Skip Stoddard.

According to Goldsmith et al. (1988), rocks are part of the DScs unit:  Syenite of Concord plutonic suite (Devonian and Silurian) – Coarse-grained, gray, mostly augite syenite with subsidiary hornblende and biotite, in Cabarrus County, NC.  Medium- to coarse-grained, gray, biotite-hornblende syenite and monzonite with or without subsidiary augite, in Mecklenburg County, NC.

Formation or Unit: Syenite of the Concord plutonic suite

Association:  Example of intrusive rocks within Charlotte terrane

Terrane: Charlotte terrane

Syenite weathering

Polished syenite from the Concord area, NC.  Coin is 27 mm in diameter. 

Syenite is commercially classified as a granite. It has been mined from the Concord area, Cabarrus County, NC.
This syenite rock is coarse grained, light bluish gray and is composed of potassium feldspar, augite, plagioclase and hornblende. The syenite body is in an elliptical outcrop pattern approximately 5.5 miles in diameter. First quarried for railroad ballast about 1903, it is now used as a beautiful polished stone.  Text and photograph from NCGS website by Jeff Reid.

According to Goldsmith et al. (1988), rocks are part of the DScs unit:  Syenite of Concord plutonic suite (Devonian and Silurian) – Coarse-grained, gray, mostly augite syenite with subsidiary hornblende and biotite, in Cabarrus County, NC.  Medium- to coarse-grained, gray, biotite-hornblende syenite and monzonite with or without subsidiary augite, in Mecklenburg County, NC.

Formation or Unit: Syenite of the Concord plutonic suite

Association:  Example of intrusive rocks within Charlotte terrane

Terrane: Charlotte terrane

Syenite
Polished sawed surface of pink phase of the granites from the Carolina Quarries, Rock of Ages, Corp., Salisbury, NC area.  Text and photograph from NCGS website by Jeff Reid.


According to Goldsmith et al. (1988), rocks are part of the DSsg unit:  Granite of Salisbury Plutonic Suite (Devonian and Silurian) – Light gray, locally pink, medium- to coarse-grained leucocratic granite; includes some quartz monzonite.  Weakly foliated, commonly has mortar texture.

Formation or Unit: Granite of Salisbury Plutonic Suite

Association:  Example of intrusive rocks within Charlotte terrane

Terrane: Charlotte terrane

Salisbury Pink
Unpolished pink granite from the Salisbury area, NC.  Text and photograph from NCGS website by Jeff Reid.


According to Goldsmith et al. (1988), rocks are part of the DSsg unit:  Granite of Salisbury Plutonic Suite (Devonian and Silurian) – Light gray, locally pink, medium- to coarse-grained leucocratic granite; includes some quartz monzonite.  Weakly foliated, commonly has mortar texture.

Formation or Unit: Granite of Salisbury Plutonic Suite

Association:  Example of intrusive rocks within Charlotte terrane

Terrane: Charlotte terrane

Salisbury Pink

'White granite' end member of granites of the Salisbury area from the Rockwell Granite Company.  Coin is about 27 mm in diameter.  Portion of text and photograph from NCGS website by Jeff Reid.


According to Goldsmith et al. (1988), rocks are part of the DSsg unit:  Granite of Salisbury Plutonic Suite (Devonian and Silurian) – Light gray, locally pink, medium- to coarse-grained leucocratic granite; includes some quartz monzonite.  Weakly foliated, commonly has mortar texture.

Formation or Unit: Granite of Salisbury Plutonic Suite

Association:  Example of intrusive rocks within Charlotte terrane

Terrane: Charlotte terrane

Leucogranite - Rockwell

Close up view of stone block from the Rockwell Granite Company awaiting shipment.  Coin is about 27 mm in diameter.  Portion of text and photograph from NCGS website by Jeff Reid.


According to Goldsmith et al. (1988), rocks are part of the DSsg unit:  Granite of Salisbury Plutonic Suite (Devonian and Silurian) – Light gray, locally pink, medium- to coarse-grained leucocratic granite; includes some quartz monzonite.  Weakly foliated, commonly has mortar texture

Formation or Unit: Granite of Salisbury Plutonic Suite

Association:  Example of intrusive rocks within Charlotte terrane

Terrane: Charlotte terrane

Leucogranite - Rockwell

Example of a dimension stone quarry in the Salisbury area, NC.  Quarry produces ‘White Granite.’  Rock near the surface is stained by weathering and does not represent color of the actual rock product.  Portion of text and photograph from NCGS website by Jeff Reid.


According to Goldsmith et al. (1988), rocks are part of the DSsg unit:  Granite of Salisbury Plutonic Suite (Devonian and Silurian) – Light gray, locally pink, medium- to coarse-grained leucocratic granite; includes some quartz monzonite.  Weakly foliated, commonly has mortar texture

Formation or Unit: Granite of Salisbury Plutonic Suite

Association:  Example of intrusive rocks within Charlotte terrane

Terrane: Charlotte terrane

White granite quarry activities