Core from Charlotte Terrane - Quartz Diorite: Iredell County, NC

 

Photo mosaic of rock core from Core Hole 3, Langtree Peninsula Research Station, Iredell County (Photograph from NCDENR-DWQ).

 
According to the geologic core descriptions in (Pippin et al., 2010) of Core Hole 3 (CH-3), Regolith is present from 0 – 28.5 feet, Transition zone is present from 28.5 – 39.5 feet and Bedrock is present from 39.5 feet to bottom of boring at 68 feet depth.


Dominant rock type present in core is metamorphosed quartz diorite.

The Langtree Peninsula Research Station was established to determine the hydrogeologic characteristics of the regolith-bedrock aquifer system in the Charlotte terrane (Charlotte belt) of the North Carolina Piedmont.  The site was established as a multiyear cooperative study between the North Carolina Department of Environment and Natural Resources (NCDENR), Division of Water Quality (DWQ) and the U.S. Geological Survey (USGS) (Pippin et al., 2010).

Quartz diorite

Select section of core from Core Hole 3, Langtree Peninsula Research Station, Iredell County (Photograph from NCDENR-DWQ).


Dominant rock type present in core is metamorphosed quartz diorite.


Rock Type: Metamorphosed quartz diorite


Association:  Example of intrusive rocks within Charlotte terrane


Terrane: Charlotte terrane

Quartz diorite

Enlargement of portion of photograph above showing texture of saprolitic quartz diorite and fresh quartz diorite.


Rock Type: Metamorphosed quartz diorite


Association:  Example of intrusive rocks within Charlotte terrane


Terrane: Charlotte terrane

Quartz diorite