DBHYDRO	reports

Lithologic Interval Details Well Name X-Coord (feet) Y-Coord (feet) OSF-70 550509 1424601 Min. Depth (feet) Max. Depth (feet) Primary Rock % Primary Rock Primary Color Induration % Porosity Comments 0 20 SAND (QUARTZ) VERY PALE ORANGE UNCONSOLIDATED 35 VERY CLEAN SAND. ONLY TRACES OF PHOSPHATE, ORGANICS, & HEAVY MINS. SLIGHT COLOR VARIATION. 20 30 SAND (QUARTZ) DARK YELLOWISH BROWN POOR 25 CONTAINS FRAGMENTS OF PURE CLAY WHICH ARE PROBABLY FROM INTERVAL BELOW. COARSE QUARTZ SAND GRAINS ARE FROSTED. 30 40 CLAY YELLOWISH GRAY POOR CONTAINS SHELL FRAGMENTS, PHOSPHATE CLAYS, A TRACE OF CALCILUTE AND FEW QUARTZ SAND GRAINS. 40 50 CLAY YELLOWISH GRAY POOR TRANSITION LAYER BETWEEN CLAY ABOVE & SANDY LAYER BELOW. 50 90 SAND (QUARTZ) LIGHT OLIVE GRAY POOR HIGH CLAY/SILT & CALCILUTITE CONTENT. PHOSPHATE PEBBLES PRESENT. 90 130 MICRITE YELLOWISH GRAY POOR CALCILUTITE MATRIX WITH DOLOSILT, FRAGMENTS OF WELL-INDURATED DOLOSTONE, SHELL FRAGMENTS, PHOSPHATE GRAVELS, PHOSPHATE SAND, LIMESTONE, QUARTZ SAND, AND A TRACE OF HEAVY MINERALS. 130 150 LIMESTONE PINKISH GRAY POOR 15 BIODEBRIS IS POORLY PRESERVED AND CONSISTS OF ECHINOID SHELLS, SPINES, AND MOLLUSK FRAGMENTS. DOLOMITE CAVINGS ARE PRESENT. ECHINOID SHELLS ARE RECRYSTALLIZED. 150 170 CALCARENITE VERY PALE ORANGE POOR 15 SUBEQUAL PARTS OF SKELETAL DEBRIS & CALCILUTITE. FOSSILS INCLUDE ECHINOIDS, NUMULITES, CONES( D. COOKIE), MOLLUSK FRAGS, & TEXTULARID FORAMS. 170 200 CALCARENITE VERY PALE ORANGE POOR 15 GOOD PRESERVATION WITH CONES BECOMING DOMINANT FOSSIL TYPE. 200 210 MICRITE VERY PALE ORANGE POOR 20 POOR PRESERVATION OF FOSSILS. 210 240 MICRITE VERY PALE ORANGE MODERATE 15 SAME COMPOSITION AS INTERVAL ABOVE & BELOW BUT WITH HIGHER INDURATION AND LOWER POROSITY. 240 300 MICRITE VERY PALE ORANGE POOR 20 RECRYSTALIZATION OF ECHINOIDS. PHOSPHATE CAVINGS. 300 320 DOLOMITE GRAYISH ORANGE GOOD 12 320 330 MICRITE VERY PALE ORANGE MODERATE 15 DOLOMITE CAVINGS. 330 380 MICRITE VERY PALE ORANGE POOR 20 380 400 DOLOMITE VERY PALE ORANGE GOOD 400 420 LIMESTONE VERY PALE ORANGE MODERATE 15 HIGH DOLOMITE CONTENT IN SAMPLE INDICATES THAT THE TRANSITION FROM DOLOMITE TO LIMESTONE OCCURRED TOWARD THE TOP OF THE INTERVAL. SAMPE ALSO CONTAINS SOME CHALKY, BIO-FREE LIMESTONE WHICH APPEARS TO BE FROM THE TRANSITION AT THE BASE OF THE INTERVAL. SAMPLE ALSO CONTAINS SOME CAVINGS OF FOSSIL FRAG AGGREGATES. 420 440 LIMESTONE VERY PALE ORANGE MODERATE CHALKY LIMESTONE WITH LITTLE FOSSILS. DOLOMITE CONTENT CONSIDERED CAVINGS. 440 460 LIMESTONE POOR QUANTITY OF SAMPLE. ALL APPEARS TO BE CAVINGS- FORAMINIFERAL GRAINSTONES, DOLOMITE, ECHINOID FRAGMENTS, MOLLUSK FRAGMENTS, LIMESTONE FRAGMENTS & BIOCALCARENITE. Page generated at: 02-JUL-2024 21:38 EDT

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