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Samples were washed briefly in distilled water, rinsed in methanol, air-dried mounted on aluminum stubs using double-stick tape. Finer fraction from ‘Core 8’ optical image – mount is ~10 mm diameter; note shell fragments. Coarser fraction from ‘Core 8’ Optical image – mount is ~10 mm
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Samples were washed briefly in distilled water, rinsed in methanol, air-dried mounted on aluminum stubs using double-stick tape Finer fraction from ‘Core 8’ optical image – mount is ~10 mm diameter; note shell fragments
Coarser fraction from ‘Core 8’ Optical image – mount is ~10 mm Note seed casing (arrow); fragment of gypsum crust
Finer fraction from ‘Core 12’ Optical image – mount is ~10 mm quartz, k-feldspar are dominant minerals darker grains are rock fragments
Coarser fraction from ‘Core 12’ note rounding of larger grains of quartz
SEM-BSE Core 8 Coarse fraction note gypsum crystals (arrows)
SEM-BSE Core 8 Coarse fraction closer view of previous frame
SEM-BSE Core 8 Coarse fraction gypsum crystals
SEM-BSE Core 8 Coarse fraction gypsum crystals encrusting lithic fragment
SEM-BSE Core 8 Coarse fraction note seed casing; shell fragment
SEM-BSE Core 8 Coarse fraction dark (in optical view) lithic fragment
SEM-BSE Core 8 Coarse fraction FE-Mn mineral on quartz grain
SEM-BSE Core 8 Coarse fraction shell fragment (arrow)
SEM-BSE Core 12 – Fine Fraction general view
SEM-BSE Core 12 – Coarse Fraction note rounding of large quartz grain (arrow)