Revised stratigraphic and tectonic framework of the Carolina Slate Belt from southern Virginia to the South Carolina-Georgia border, with observations bearing on the origin of slate-belt gold deposits

1999 ◽  
Author(s):  
Terry W. Offield
Keyword(s):  
South Carolina ◽  
Gold Deposits ◽  
The South ◽  
Tectonic Framework ◽  
Carolina Slate Belt

scholarly journals U-Pb Zircon Ages and Pb Isotope Geochemistry of Gold Deposits in the Carolina Slate Belt of South Carolina

2005 ◽  
Vol 100 (2) ◽  
pp. 225-252 ◽  
Author(s):  
R. A. Ayuso ◽  
J. L. Wooden ◽  
N. K. Foley ◽  
R. R. Seal ◽  
A. K. Sinha
Keyword(s):  
South Carolina ◽  
Isotope Geochemistry ◽  
Gold Deposits ◽  
Pb Isotope ◽  
Carolina Slate Belt

scholarly journals Geophysical Study of Gold Mineralized Zones in the Carolina Terrane of South Carolina

2021 ◽  
Author(s):  
Saad S. Alarifi ◽  
James N. Kellogg ◽  
Elkhedr Ibrahim
Keyword(s):  
South Carolina ◽  
Magnetic Anomaly ◽  
Coastal Plain ◽  
Sedimentary Rocks ◽  
Gravity Anomalies ◽  
Gold Deposits ◽  
Metamorphic Rocks ◽  
Carolina Slate Belt ◽  
Drill Holes ◽  
Ore Zones

Abstract Large pyrite-dominated gold deposits are hosted in hydrothermally altered metamorphic rocks in the Carolina slate belt of South Carolina and are partly covered by Coastal Plain sedimentary rocks. In this study, we investigate the utility of geophysical data including aeromagnetic, electromagnetic (EM), and land gravity surveys as exploration tools. Observed geophysical anomalies are correlated with rock properties such as resistivity, susceptibility, and density. Mineral concentrations were measured for 40 samples from 16 new drill holes, as well as densities and pyrite concentrations for 49,183 samples from 448 drill holes in the Haile ore zone. Regional positive gravity anomalies are observed over the Haile, Ridgeway, and Barite Hill mine areas, and residual high-pass filtered positive gravity anomalies are observed over all mine areas. New measurements for drill cores in the Haile mine area directly confirm high rock densities and high pyrite concentrations in the ore zone. In the Haile and Brewer mine areas, high-conductivity EM anomalies are observed over the ore zones as well as over nearby metasedimentary rocks. The high concentration of pyrite in the metasedimentary units and in the ore zones may explain the high conductivities observed. All gold deposits in the Carolina slate belt are hosted in similar geologic settings near the contact between the Persimmon Fork metamorphosed volcaniclastic rocks and Richtex metamorphosed sedimentary rocks. Density and conductivity contrasts between the Persimmon Fork and Richtex Formation rocks may permit mapping of the contact zone between the two units. The magnetic anomalies do not correlate with the mineralized zones but rather with granite and gabbro plutons and diabase dikes. A prominent east-northeast linear magnetic anomaly correlates with the Modoc shear zone that separates low-grade metamorphic rocks of the Carolina terrane from higher-grade metamorphic rocks of the Kiokee belt. We use the Modoc linear magnetic anomaly to predict the southeastern boundary of the Carolina slate belt where it is covered by Coastal Plain sedimentary rocks.

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