| Min.Depth(feet) |
Max.Depth(feet) |
Primary Rock |
%PrimaryRock |
Primary Color |
Induration |
%Porosity |
Comments |
| 0 |
265 |
NO SAMPLE |
|
|
|
|
|
| 265 |
360 |
CALCARENITE |
|
YELLOWISH GRAY |
MODERATE |
25 |
ALLOCHEM SIZE GENERALLY DECREASES DOWNSECTION. THE QUANTITY OF QUARTZ SAND AND SILT DECREASES FROM ABOUT 5% IN THE UPPER 30' OF THE UNIT TO ABOUT 1% IN THE LOWERMOST 30'. PHOSPHATE SAND ALSO BECOMES LESS ABUNDANT DOWNSECTION, RANGING FROM ABOUT 2% IN THE UPPER 30' TO APPROXIMATELY 0.5% IN THE LOWER 30'. FORAMS ARE RARE, AND NONE WERE IDENTIFIABLE. A FEW FRAGMENTS OF CLAYEY-SILTY CARBONATE OCCURS THROUGH THE UNIT, BUT BECOMES LESS COMMON DOWNSECTION. SOME POROSITY RESULTS FROM INCOMPLETE INFILLING BY CARBONATE MUD. |
| 360 |
390 |
MICRITE |
|
YELLOWISH GRAY |
MODERATE |
25 |
THIS INTERVAL IS A DOWNWARD CONTINUATION OF THE OVERLYING COARSER MATERIAL. PHOSPHATE SAND IS GENERALLY CONCENTRATED WITHIN RELATIVELY SITLY AND SANDY FRAGMENTS. CORAL FRAGMENTS ARE SPARSE RELATIVE TO THE OVERLYING UNIT. FORAMS ARE MORE ABUNDANT AND HAVE GREATER DIVERSITY OF SPECIES, HOWEVER, NONE WERE POSITIVELY IDENTIFIED. SOME POROSITY RESULTS FROM AN INCOMPLETE INFILLING BETWEEN ALLOCHEMS. |
| 390 |
540 |
CALCARENITE |
|
YELLOWISH GRAY |
MODERATE |
25 |
A MORE SILICICLASTIC-RICH DOWNWARD CONTINUATION OF THE OVERLYING UNITS. PERMEABILITY IS PROBABLY HIGHEST WITHIN THIS UNIT, BUT IS NOT POSSIBLE TO VERIFY THIS. FRAGMENTS OF PHOSPHATE-BEARING, VERY FINE QUARTZ SAND, AND SILTY TO SANDY CALCILUTITE ARE MUCH MORE COMMON RELATIVE TO OVERLYING UNITS, AND THEY APPEAR TO BECOME MORE ABUNDANT DOWNSECTION. ROBUST BRYOZOAN FRAGMENTS ARE MORE COMMON, AND CORAL APPEARS TO BE ABSENT. |
| 540 |
570 |
MICRITE |
|
YELLOWISH GRAY |
MODERATE |
25 |
RELATIVELY TO THE OVERLYING UNIT THERE IS MUCH LESS SILT AND NO QUARTZ SAND PRESENT. PHOSPHATE IS SPARSE, AND BARELY REACHES 1%. NO FORAMS OR CORAL WAS OBSERVED. POROSITY IS IN PART A RESULT OF INCOMPLETE INFILLING OF CARBONATE MUD BETWEEN ALLOCHEMICAL GRAINS. |
| 570 |
780 |
CALCARENITE |
|
YELLOWISH GRAY |
MODERATE |
25 |
A HOMOGENOUS UNIT THAT IS SIMILAR TO THE OVERLYING UNITS. SILT IS SPRASE AND VERY FINE QUARTZ SAND IS RARE. POROSITY IS IN PART PRODUCED BY INCOMPLETE INFILLING BETWEEN ALLOCHEMS. VERY MINOR AMOUNTS OF EUHEDRAL, SILT-SIZED DOLOMITE RHOMBS (HEREAFTER DOLOSILT) OCCUR SPORADICALLY THROUGHOUT THE UNIT, AND IS <<1%. |
| 780 |
920 |
MICRITE |
|
YELLOWISH GRAY |
MODERATE |
25 |
RECRYSTALLIZATION OF SHELL AND CALCILUTITE TO A HONEY-COLORED SPARRY CALCITE IS CLASSIFIED AS CRYSTALS IN THE LITHOLOGIC DESCRIPTION. DOLOSILT RHOMBS OCCUR AS A MINOR INCLUSION IN THE CALCILUTITE AND AS SPARSE DOLOSILT-RICH FRAGMENTS. |
| 920 |
980 |
LIMESTONE |
|
YELLOWISH GRAY |
GOOD |
25 |
THE RECRYSTALLIZED CALCILUTITE AND SHELL FRAGMENTS ARE NOW A WHITE TO PALE YELLOW SPARRY CALCITE. SOME FRAGMENTS OF DOLOSILT IN THE UPPER 30' SAMPLED INTERVAL SUGGESTS THAT THE CONTACT BETWEEN THE HAWTHORN AND "SUWANNEE" IS A LITTLE DEEPER THAN 920'. PHOSPHATE IN THE LOWER 30' SAMPLED INTERVAL IS PROBABLY CAVINGS. |
| 980 |
1070 |
LIMESTONE |
|
VERY PALE ORANGE |
GOOD |
25 |
POROSITY IS PRIMARIALLY A RESULT OF PINPOINT VUG DEVELOPMENT AND INTERNAL POROSITY OF THE CONES. THE LOWERMOST 30' IS RELATIVELY LESS RECRYSTALLIZED AND THE MATRIX IS DOMINATED BY CALCILUTITE RATHER THAN SPARRY CALCITE. CONES ARE SPARSE IN THE UPPER 30', VERY ABUNDANT IN THE MIDDLE 30', AND SPARSE IN THE LOWERMOST 30' OF THE SECTION. THE CONES HAVE BEEN POSITIVELY IDENTIFIED AS DICTYCONUS cookei. THE OTHER FORAMS PRESENT HAVE NOT BEEN POSITIVELY IDENTIFIED. |
| 1070 |
1100 |
LIMESTONE |
|
|
|
|
VERY POOR SAMPLE. LOST CIRCULATION WAS COUNTERED BY INTRODUCING LARGE QUANTITIES OF FIBEROUS MATERIALS INTO THE WELL. ONLY ABOUT 20% OF THE MATERIAL PRESENT IS ROCK CUTTINGS. FRAGMENTS APPEAR TO BE SIMILAR TO THE OVERLYING UNIT, BUT COULD BE CAVINGS. TD |
