Photomicrograph of highly mashed gabbro. New London County, Connecticut. 1904.
Dates
Date Taken
1904
Summary
Photomicrograph of highly mashed gabbro, the feldspars have suffered some microscopic faulting and rotating, The uralite needles have assumed a schistose arrangement and also fill fault cracks in the feldspar. The ilmenite also has recrystallized into a distinctly schistose arrangement. Magnified 30 diameters. Nicols crossed. New London County, Connecticut. 1904. Plate 11-A in U.S. Geological Survey. Bulletin 492. 1912.
Summary
Photomicrograph of highly mashed gabbro, the feldspars have suffered some microscopic faulting and rotating, The uralite needles have assumed a schistose arrangement and also fill fault cracks in the feldspar. The ilmenite also has recrystallized into a distinctly schistose arrangement. Magnified 30 diameters. Nicols crossed. New London County, Connecticut. 1904. Plate 11-A in U.S. Geological Survey. Bulletin 492. 1912.
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