6-HT-89 Terrace above Farmington River, CT River Valley downstream from exposures of the centimeters wide contact metamorphic hornfels under the second and third basalt flows. 3220+/-10 (QC-360) 3570+/-60 (Beta-873) 3680+/-80 (QC-305) Thin section. Lithic source # 3134A Hornfels All CT … Continue reading →