Description: Introduction: The Hylas Zone, a northeast-trending belt of mylonite and ultramylonite, lies in the eastern Piedmont Province of Virginia and borders the northern end of the Richmond Basin (Fig. I-1). The north-trending Richmond Basin is 58 km long and a maximum of 16 km wide. Early indications of anomalous uranium concentrations in the region came from discussions with Jan Krason, GeoExplorers International, Denver, who had worked in the area. Examination of aerial radiometric data (Geodata International, 1975) and HSSR data (Cook, 1981) indicated anomalous values of uranium in the area northwest of Richmond. During June 1981, a 5-day trip to the Hylas area was undertaken to collect rock and ground-water samples and to identify possible source and host rocks of uranium.
Date: October 1982
Creator: Goodknight, Craig S. & Burger, John A.
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