IMPACT ABSORPTION OF QUARTZ PEBBLE CONGLOMERATE INTO THE HOST ROCK AT MIDDLESBORO CRATER KENTUCKY

Kathleen E. Bussiere, Margaret T. Covley, Connor Foley, Scott C. McKenzie
2016 unpublished
All samples were taken from the central uplift on the grounds of the Middlesboro Country Club, with permission. Sample one's structure shows that the quartz pebbles are still well formed with only minor deformation of a few small inclusions. There are no quartz stringers or shock darkening present. Sample two shows some spherical retention in the larger pebbles, though smaller pebbles possess a greater degree of flattening moving towards a stringer form. No shock darkening is present. Sample
more » ... ee has clearly defined quartz stringers along with intense deformation on the larger pebbles. No shock darkening is present. Sample four structure shows that shock darkening is prevalent, the larger pebbles have deformed to the point where the lengthening has started to blend the pebbles together and quartz stringers are fully formed with one measuring 7.4cm. Sample five shows absorption of a 2.5cm quartz pebble by the conglomerate host rock, shock darkening is present, though on close inspection a few small (<0.1cm) pebbles are still intact.
doi:10.1130/abs/2016am-279083 fatcat:rpfysyknkjbeffgc3emxrsrase