Rock-fabric facies	Color	Depositional texture	Sedimentary structures/ textures	Carbonate and accessory grains	Porosity (percent)	Hydraulic conductivity	Paleo- environ- ment
Peloid grainstone and packstone	Very pale orange 10YR 8/2, grayish orange 10YR 7/4 and pale yellowish orange 10YR 8/6 matrix	Burrow-mottled pelmold and peloid grainstone and packstone	Highly burrowed, including minor Callianassa shrimp burrows, very thickly bedded	Mainly pelmolds and peloids; minor pelecypods, gastropods, oomolds, and Schizoporella bryozoans, miliolids, quartz grains, intraclasts	25-45 percent pelmoldic, 5-15 percent solution-enlarged burrow porosity, trace root-mold porosity	High to very high	Shallow shelf
Coral framestone	Very pale orange 10YR 8/2, grayish orange 10YR 7/4, dark yellowish orange 10YR 6/6, moderate yellowish brown 10YR 5/4, pale yellowish brown 10YR 6/2	Coral framestone	Massive with borings and vugs	Mainly Monastrea(?) head coral, minor medium to large pebblesized Schizoporella; trace to 5 percent quartz grains with peloids in boring and vug fill	15 percent intragrain porosity, 5-10 percent separate vug porosity, 5 percent root-mold porosity	Moderate	Shallow shelf
Peloid wackestone and packstone	Very pale orange 10YR 8/2, dark yellowish orange 10YR 6/6, moderate yellowish brown 10YR 5/4, pale yellowish brown 10YR 6/2, and light brown 5YR 5/6 matrix	Mainly mud-dominated fabric characterized by pelecypod, benthic foram lime floatstone with a peloid lime wackestone to mud-dominated lime pack - stone matrix, but minor grain-dominated fabric characterized by peloid lime grainstone or skeletal grain-dominated lime packstone matrix; minor solution-enlarged burrows filled with peloid grain - stone or packstone	Highly burrowed, including minor Callianassa shrimp burrows, common ~0.5-1 mm diameter rhizoliths and less common up to 5-cm wide subvertical root molds, medium to very thickly bedded	Mainly peloids, pelecypods (including Chione) and benthic foraminifers (including archaiasinids, Sorites, miliolids, Cyclorbiculina), ostracods, and minor Schizoporella bryozoans, quartz grains, and intraclasts	5-20 percent pelmol - dic and skeletal moldic porosity, 5-40 percent separate- and touching-vug porosity, trace to 10 percent root-mold porosity, 1 percent intraparticle porosity	Matrix of float-stone low, burrow fill moderate, vuggy porosity low to very high	Shallow shelf
Gastropod floatstone and rudstone	Pale yellowish brown 10YR 6/2, very pale orange 10YR 8/2, light gray N7 to medium dark gray N4	Moldic gastropod float-stone and rudstone with skeletal wackestone and packstone matrix; local lime wackestone	~0.5-1 mm diameter rhizoliths, local desiccation cracks, very thinly to very thickly bedded	Mainly gastropods molds including Planorbella, Pomacea, Physa, Hydrobiidae?, smooth-walled ostracods, and skeletal fragments; minor quartz sand, pelecypods, freshwater-algae Charophyta	15 percent skeletal-moldic separate vugs, solution-enlarged semivertical root molds, minor vertical or irregular vugs and local root-mold porosity	Matrix low, vertical vuggy hydraulic conductivity low to high, horizontal vuggy hydraulic conductivity low to medium	Freshwater marsh, freshwater pond, or brackish
Conglomerate	Very pale orange 10YR 8/2 and pale yellowish brown 10YR 6/2 matrix, and very pale orange 10YR 8/2, dark yellowish orange 10YR 6/6, moderate yellowish brown 10YR 5/4, pale yellowish brown 10YR 6/2, moderate brown 5YR 4/4, light brown 5YR 6/4, grayish orange pink 5YR 7/2 and dark gray N3 to light gray N7 intraclasts	Intraclast lime rudstone with quartz sandstone matrix or quartz sand-rich lime grainstone or muddominated lime packstone matrix	Common ~0.5-1-mm diameter rhizoliths, thinly to medium bedded	Mainly intraclasts and quartz grains; local minor peloids, pelecypods	5-15 percent intergrain porosity, 5-15 percent separate- and touching- vug porosity, local 5-10 percent rootmold porosity	Matrix low, vuggy porosity low to high	Fluvial(?), shoreface(?)
Pedogenic limestone	(A) very pale orange 10YR 8/2, dark yellowish orange 10YR 6/6, moderate yellowish brown 10YR 5/4, pale yellowish brown 10YR 6/2 and grayish orange 10YR 7/4; (B) very pale orange 10YR 8/2 and grayish orange 10YR 7/4; (C) dark yellowish orange 10YR 6/6, grayish orange 10YR 7/4, pale yellowish brown 10YR 6/2, moderate yellowish brown 10YR 5/4 and very pale orange 10YR 8/2	3 principal types: (A) laminated calcrete, (B) massive calcrete, (C) root-mold limestone	(A) Thinly to very thickly bedded and drapes over microtopography; (B) very finely laminated; (C) thinly to very thickly bedded or poorly bedded, desiccation cracks	(A) minor quartz grains; (B) minor intraclasts, pelecypods, skeletal fragments, quartz grains, rotaliform benthic foraminifera including Ammonia and Elphidium; (C) skeletal fragments and local miliolids, minor quartz sand	(A) Minor microporosity; (B) 20-30 percent rootmold porosity, 5-10 percent vuggy porosity, 5 percent pelmoldic and skeletal moldic porosity; (C) 2-5 percent skeletal moldic porosity, 2-5 percent desiccation crack porosity	(A) Low, (B) moderate to high, (C) matrix very low to low	Subaerial exposure
Mudstone and wackestone	Very pale orange 10YR 8/2, grayish orange pink 5YR 7/2, pale yellowish brown 10YR 6/2, grayish orange 10YR 7/4	Lime mudstone and wackestone	Common subvertical cracks, ~0.5-1 mm diameter rhizoliths, semivertical solutionenlarge vugs, thinly to thickly bedded	(A) Brackish: mainly ostracods, skeletal fragments, gastropods (including Planorbella in the G-3679 test corehole), benthic foraminifers (including Ammonia, Elphidium, miliolids, soritids, Archaias, peneroplids, Androsina; minor pelecypods quartz sand; (B) mud mound: peloids, pelecypods, benthic foraminifers (including miliolids), quartz sand, intraclasts, ostracods	5-20 percent skeletal mold porosity, 5 percent root-mold porosity, 5 percent separate vug porosity, none to 30 percent semivertical touching vug porosity, none to 15 percent desiccation- crack porosit	Matrix very low to low; moderate to high vertical vuggy hydraulic conductivity; very Low to low horizontal vuggy hydraulic conductivity	Two principal environments (A) brackish and (B) mud mound(?)
Skeletal grainstone and packstone	Very pale orange 10YR 8/2, pale yellowish brown 10YR 6.2, grayish orange 10YR 7/4; light gray N7 to very light gray N8	Skeletal grainstone and packstone	Principally massive and highly burrowed, thickly to very thickly bedded	Mainly skeletal fragments, benthic foraminifers (including archaiasinids, soritids, miliolids, peneroplids, Elphidium, Ammonia, Androsina, Amphistegina, rotaliforms), peloids, pelecypods (including Trachycardium, Anodontia), ostracods, gastropods, echinoids; minor quartz grains; trace red algae	15-30 percent skeletal moldic porosity, 5-15 percent intergrain porosity, trace to 10 percent pelmoldic porosity, 5-15 percent root-mold porosity, 1 percent intraparticle	Matrix moderate	Shallow shelf
Sandy skeletal grainstone and packstone	Very pale orange 10YR 8/2, very light gray N8	Sandy skeletal grainstone and packstone	Thickly to very thickly bedded	Mainly peloids, quartz sand, mollusks (including Chione, Modulus, Turritella, Codakia, Lucina, Lirophora, Pyrazisinus, Tagelus, Anomalocardia, Melongena, Lucinisca, Carditimera, Codakia, Cerithium), skeletal fragments	2-10 percent skeletal molds, separate and touching vugs	Matrix medium, vugs medium to very high	Shallow shelf
Laminated peloid grainstone and packstone	Very pale orange 10YR 8/2	Peloid grainstone and packstone	Thinly laminated to very thinly bedded	Mainly peloids; minor quartz grains, skeletal fragments, and benthic foraminifers (including miliolids, Elphidium, Androsina, rotaliforms), mollusk fragments	10-15 percent moldic porosity, 10-20 percent intergrain porosity, bedding plane vug porosity 5-20 percent	Matrix moderate, bedding plane vugs high to very high	Intertidal
Pelecypod floatstone and rudstone	Very pale orange 10YR 8/2, very light gray N8	Pelecypod floatstone and rudstone with skeletal wackestone, packstone or grainstone matrix	Thickly to very thickly bedded	Mainly mollusks (Chione, Turritella, Trachycardium, Bellucina, Diodora, Muricid, Brachidontes, Anomalocardia?) benthic foraminifers (including archaiasinids, peneroplids, miliolids, Parasorites, soritids, Amphistegina, Ammonia, Elphidium, Androsina, rotaliforms), peloids, ostracods; minor quartz grains; trace echinoids	10-25 percent moldic, 5-15 percent intergrain, irregular separate and touching vugs	Matrix moderate, irregular vugs low to very high	Shallow shelf
Sandy pelecypod floatstone and rudstone	Very pale orange 10YR 8/2, very light gray N8	Pelecypod floatstone and rudstone with sandy wackestone or packstone matrix	Thickly to very thickly bedded	Mainly peloids, quartz sand, pelecypods, skeletal fragments, benthic foraminifers	5-20 percent skeletal molds,	Matrix medium	Shallow shelf
Touching-vug pelecypod floatstone and rudstone	Very pale orange 10YR 8/2, very light gray N8	Pelecypod floatstone and rudstone with peloid and skeletal fragment wackestone and packstone matrix	Medium to very thickly bedded	Mainly peloids, mollusks (including Chione, Modulus, Turritella, Codakia, Lucina, Pecten, Diplodonta, Strombus?, Pleuromeris, Carditimera, Anadara, Glycymeris, Anodonita, Cardium, Dosinia, Nucula, Turbo, Glycymeris, Pecten?), skeletal fragments, benthic foraminifers (including soritids, archaiasinids, miliolids, Ammonia, Parasorites, Amphistegina, Elphidium, peneroplids, rotaliforms, Androsina), ostracods, echinoids; trace Porites? coral	2-25 percent skeletal moldic porosity, 5-100 percent separate and touching vugs	Matrix medium, vugs medium to very high	Shallow shelf
Sandy touchingvug pelecypod floatstone and rudstone		Pelecypod floatstone and rudstone with	Thickly to very thickly bedded	Mainly peloids, quartz sand, mollusks (including Chione, Cerithium, Trachycardium, Modulus, Turritella, Lucinisca), skeletal fragments	5-20 percent skeletal molds,	Matrix medium	Shallow shelf
Vuggy wackestone and packstone	Very pale orange 10YR 8/2	Peloid wackestone and packstone	Thickly to very thickly bedded	Mainly peloids, benthic foraminifers (including miliolids), gastropods; minor to abundant quartz grains	5-25 percent irregular separate and touching vugs	Matrix low, vugs moderate to very high	Shallow shelf (mud bank)
Quartz sandstone and skeletal sandstone	Very pale orange 10YR 8/2, very light gray N8	Skeletal sandstone	Thickly to very thickly bedded	Mainly quartz sand, peloids, pelecypods, skeletal fragments, gastropods	2-10 percent skeletal molds	Matrix medium	Shallow shelf

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