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publications > open file report > OFR 98-205 > appendix 1 > fakahatchee strand gate 12 core
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Appendix 1
Petrographic Descriptions (all percentages are visual estimates)
| Fakahatchee Strand Gate 12 core |
| Depth (ft) |
Description |
|
Tamiami Formation (Ochopee Limestone Member) |
| 7.0 |
Molluscan wackestone with <1% quartz silt in a micrite matrix (15%); skeletal grains include molluscan molds (with remnants of aragonitic shell remaining) and fragments, partially leached benthic foraminifers, ostracodes, red algae, echinoids and barnacles; isopachous blocky cement on upper sides of molluscan fragments; porosity is moldic and in vugs and channels. |
| 17.7 |
Molluscan packstone to grainstone with <1% quartz silt in a peloidal micrite matrix (<5%); skeletal grains include molluscan molds (?) and fragments, micritized benthic foraminifers, bryozoans, echinoids, and barnacles; matrix has microspar and clotted textures; porosity is very low and interparticle; geopetal structures. |
| 23.8 |
Molluscan packstone with trace of quartz and phosphatic silt, and fine sand in a micrite matrix (30%); skeletal grains include molluscan molds (with remnant original shell present) and fragments, benthic and planktonic foraminifers, ostracode, bryozoan, echinoid fragments, and barnacles; dogtooth calcite cement on nearly all surfaces; porosity is high and moldic. |
| 32.3 |
Skeletal packstone to grainstone with 10% medium quartz sand and <1% phosphatic fine sand in a micrite matrix (10%); skeletal grains include molluscan molds and fragments, benthic and planktonic foraminifers, ostracodes, bryozoans, echinoid fragments, and barnacles; minor microspar formation in matrix; cement is blocky and dogtooth calcite, and porosity is interparticle, moldic, and in vugs and channels. |
| 36.0 |
Sandy wackestone with >30% medium quartz sand in a micrite matrix (5%); skeletal grains include micritized molluscan fragments, foraminifers, ostracodes, and bryozoans; matrix is microspar and has a clotted textures; cement is all blocky calcite; porosity is very low due to cement precipitation in voids. |
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