McKittrick Front 418 Well

Depth: 1430.5

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SEM photo at 250X. This backscattered electron image (BEI), in which concentrations of heavy elements appear bright and lighter elements appear dark. Shows pyritized (bright) microfossil tests in a matrix of silica (dark gray), patches of hydrocarbon (black), and tiny curved calcareous test (bright gray). Pyrite framboids appear as 5m white circles in the matrix.