publications > water resources investigations > report 00-4251 > appendix i > peacock park core

Peacock Park Core

Depth (feet below land surface)	Lithologic description
0.0 - 1.0	Quartz-sand-rich soil, dark-yellowish-brown 10YR 4/2; mainly clay and fine to medium grain size, ranges from clay to coarse; roots; 20 percent interparticle porosity; low hydraulic conductivity.
1.0 - 2.0	Rubble of oolitic lime grainstone, very pale orange 10YR 8/2; mainly medium grain size; 25 percent oomoldic and probable solution-channel porosity; high hydraulic conductivity.
2.0 - 3.0	Loose quartz sand, very pale orange 10YR 8/2, grayish orange 10YR 7/4; mainly fine to medium, ranges from fine to medium; 25 percent interparticle porosity; moderate hydraulic conductivity; bay sediments(?).
3.0 - 4.0	No recovery.
4.0 - 5.0	Silty mudstone, very pale orange 10YR 8/2, pale-yellowish-brown 10YR 6/2, brownish gray 5YR 4/1; mainly clay to silt; roots; 5 percent interparticle porosity; very low hydraulic conductivity; bay sediments(?).
5.0 - 5.5	Peat; black N1; mainly clay to silt; roots; 25 percent interparticle porosity; very low hydraulic conductivity; bay sediments(?).
5.5 - 8.5	Loose quartz sand, pale-yellowish-brown 10YR 6/2, light gray N7; mainly fine to medium grain size, ranges from very fine to coarse; caved grains; 25 percent interparticle porosity; moderate hydraulic conductivity; mainly caved quartz sand (?).
8.5 - 9.0	Calcretized oolitic lime grainstone, very pale orange 10YR 8/2, pale-yellowish-brown 10YR 6/2; medium grain size; 25 percent oomoldic and solution-channel porosity; high hydraulic conductivity.
9.0 - 11.0	No recovery.
11.0 - 13.0	Loose quartz sand, very light gray N7; mainly fine to medium grain size, ranges from fine to coarse; caved particles and roots; 25 percent interparticle porosity; moderate hydraulic conductivity.
13.0 - 13.8	Rubble of oolitic lime grainstone, very pale orange 10YR 8/2; mainly fine grain size; ranges from fine to pebble; mollusks and branching bryozoans 25 percent oomoldic and solution-channel porosity; high hydraulic conductivity.
13.8 - 15.0	Rubble of oolitic lime grainstone, very pale orange 10YR 8/2, grayish orange 10YR 7/4, moderate yellowish brown 10 YR 5/4; mainly fine grain size; ranges from fine to pebble; mollusks and branching bryozoans 25 percent oomoldic and solution-channel porosity; high hydraulic conductivity.
15.0 - 16.0	Loose quartz sand, very light gray N7; mainly fine to medium grain size, ranges from fine to coarse; 25 percent interparticle porosity; moderate hydraulic conductivity.
16.0 - 18.0	Rubble of oolitic lime grainstone, very pale orange 10YR 8/2, grayish orange 10YR 7/4, moderate yellowish brown 10YR 5/4; mainly fine grain size, ranges from fine to medium; 25 percent oomoldic and solution-channel porosity; high hydraulic conductivity.
18.0 - 23.2	No recovery.
23.2 - 24.0	Rubble of sandstone cemented with calcite and oolitic lime grainstone, sample is probably cave, very pale orange 10 YR 8/2, grayish orange 10YR 7/4, moderate yellowish brown 10YR 5/4; mainly fine grain size, ranges from fine to medium; 25 percent oomoldic, interparticle and vuggy porosity; high hydraulic conductivity.
24.0 - 25.0	No recovery.
25.0 - 25.5	Rubble of oolitic lime grainstone, very pale orange 10YR 8/2, grayish orange 10YR 7/4; mainly fine grain size, ranges from fine to pebble; branching bryozoans and mollusks; 25 percent oomoldic porosity; high hydraulic conductivity.
25.5 - 30.0	No recovery.
30.0 - 30.8	Skeletal-fragment lime grainstone, very pale orange 10YR 8/2, grayish orange 10YR 7/4, dark-yellowish-orange 10YR 6/6; mainly fine to medium grain size, ranges from very fine to granule; 35 percent vuggy, moldic, interparticle and solution-channel porosity; very high hydraulic conductivity; probable exposure surface between 25.5 and 30 feet.
30.8 - 31.7	Skeletal-fragment lime rudstone with skeletal-fragment lime grainstone matrix; very pale orange 10YR 8/2, grayish-orange 10YR 7/4, dark-yellowish-orange 10 YR 6/6; mainly fine to granule grain size; 35 percent vuggy, moldic, interparticle and solution-channel porosity; very high hydraulic conductivity.
31.7 - 32.7	Skeletal-fragment lime rudstone with skeletal-fragment lime grainstone matrix; very pale orange 10YR 8/2, grayish-orange 10YR 7/4, dark-yellowish-orange 10 YR 6/6; mainly medium to pebble grain size; 35 percent vuggy, moldic, interparticle and solution-channel porosity; very high hydraulic conductivity.
32.7 - 34.0	Monastrea lime framestone, very pale orange 10YR 8/2; mainly cobble grain size; 25 percent intraparticle porosity; very high hydraulic conductivity.
34.0 - 35.0	No recovery.
35.0 - 36.0	Rubble of coral lime framestone, very pale orange 10YR 8/2; mainly clay and pebble and cobble, ranges from clay to cobble; 25 percent intraparticle porosity; very high hydraulic conductivity.
36.0 - 40.8	No recovery.
40.8 - 41.8	Rubble of skeletal lime packstone, very pale orange 10YR 8/2, grayish orange 10YR 7/4; mainly clay to pebble; ranges from clay to pebble; 20 percent moldic and vuggy porosity; high hydraulic conductivity; possible cave.
41.8 - 43.0	Friable calcareous quartz sandstone; very pale orange 10YR 8/2, pale-yellowish-orange 10YR 6/6; grayish-orange 10YR 7/4; mainly very fine to fine grain size, ranges from very fine to medium; 20 percent interparticle porosity; moderate hydraulic conductivity.
43.0 - 45.5	Rubble of skeletal lime grainstone and packstone and oolitic lime grainstone, very pale orange 10YR 8/2, grayish-orange 10YR 7/4; mainly clay to pebble grain size, ranges from clay to pebble; 20 percent moldic, vuggy and interparticle porosity; high hydraulic conductivity; at least some of the rubbly limestone is cave (oolitic lime grainstone).
45.5 - 51.0	No recovery.
51.0 -51.5	Rubble of caved limestone.
51.5 - 52.0	Diplora coral lime framestone, very pale orange 10YR 8/2; mainly cobble grain size; 30 percent intraparticle porosity; very high hydraulic conductivity.
52.0 - 61.0	Rubble of caved limestone.
61.0 - 62.5	Skeletal fragment lime wackestone, packstone and grainstone, mottled combination of very pale orange 10YR 8/2, pale-yellowish-orange 10YR 8/6, grayish orange 10YR 7/4, and very light gray N7; mainly clay to medium grain size; ranges from clay to pebble; peloids, mollusks, gastropods and echinoid spines; 25 percent moldic, root-mold and minor solution-channel porosity; high hydraulic conductivity; mottled colors, root molds and solution channels suggest exposure surface between 52 and 61 feet.
62.5 - 71.0	No recovery.
71.0 - 71.5	Rubble of skeletal fragment lime wackestone, packstone and grainstone, mottled combination of very pale orange 10YR 8/2, pale-yellowish-orange 10YR 8/6, grayish orange 10YR 7/4, and very light gray N7; mainly clay to medium grain size; ranges from clay to pebble; peloids, mollusks, gastropods and echinoid spines; 25 percent moldic, root-mold and minor solution-channel porosity; high hydraulic conductivity.
71.5 - 72.0	Skeletal fragment lime wackestone and packstone, mottled combination of very pale orange 10YR 8/2, pale-yellowish-orange 10YR 8/6, grayish orange 10YR 7/4, and very light gray N7; mainly clay to medium grain size; ranges from clay to pebble; peloids, mollusks, miliolids and gastropods; 25 percent moldic, root-mold and minor solution-channel porosity; high hydraulic conductivity.
72.0 - 73.0	Red algae, skeletal fragment, quartz-sand-rich lime grainstone; very pale orange 10YR 8/2; light gray N8; mainly very fine to coarse grain size. ranges from very fine to pebble; 10 percent fine to medium quartz sand; red algae and mollusks; 20 percent moldic and interparticle porosity; moderate hydraulic conductivity.
73.0 - 76.2	No recovery.
76.2 - 77.6	Skeletal fragment, red algae, quartz-sand-rich lime grainstone; very light gray N7; light gray N8; mainly very fine to coarse grain size. ranges from very fine to pebble; 20 percent fine to medium quartz sand; mollusks; 15 percent moldic and interparticle porosity; moderate hydraulic conductivity.
77.6 - 78.0	Red algae lime floatstone with quartz-sand-rich, skeletal lime packstone matrix, mollusks, very pale orange 10YR 8/2, light gray N7; mainly clay to granule, ranges from clay to pebble; 20 percent fine to medium quartz sand, mollusks; 15 percent moldic, intergranular and vuggy porosity; moderate hydraulic conductivity.
78.0 - 81.0	No recovery.
81.0 - 82.3	Red algae, mollusk lime rudstone and floatstone with quartz-sand-rich, skeletal lime packstone matrix, light gray N7, very pale orange 10YR 8/2, grayish orange 10YR 7/4; mainly clay to pebble grain size, ranges from clay to pebble; 20 percent fine to medium quartz sand and minor coarse quartz sand; 15 percent moldic and vuggy porosity; moderate hydraulic conductivity.
82.3 - 83.5	Skeletal fragment, quartz-sand-rich lime grainstone, yellowish gray 5Y 8/1; mainly fine to medium grain size, ranges from very fine to medium; 15 to 25 percent very fine to fine quartz sand; mollusks, gastropods; 25 percent moldic and interparticle porosity; moderate hydraulic conductivity.
83.5 - 84.9	Lime mudstone, wackestone and packstone; very pale orange 10YR 8/2; mainly clay to very fine grain size, 10 percent very fine to fine quartz sand gastropods, mollusks; 15 percent moldic and root-mold porosity; low hydraulic conductivity; supratidal or intertidal environment, root molds, subaerial exposure surface at 83.5 feet.
84.9 - 85.2	Skeletal, quartz-sand-rich lime packstone; very pale orange 10YR 8/2; mainly clay to medium grain size; 20 percent very fine to fine quartz sand; 15 percent moldic porosity; moderate hydraulic conductivity.
85.2 - 88.0	No recovery.
88.0 - 89.0	Skeletal, quartz-sand-rich lime grainstone, very light gray N7, very pale orange 10YR 8/2; mainly very fine to medium grain size, ranges from very fine to coarse; 20 percent very fine to fine quartz sand, gastropods, mollusks; 20 percent moldic and interparticle porosity; moderate hydraulic conductivity.
89.0 - 89.5	Mollusk lime rudstone with quartz sand-rich, skeletal lime packstone matrix, very light gray N7, very pale orange 10YR 8/2; mainly clay to fine and pebble grain size, ranges from clay to pebble; 20 percent very fine to fine quartz sand; 15 percent moldic porosity; moderate hydraulic conductivity.
89.5 - 91.0	Skeletal, mollusk, quartz-sand-rich lime packstone and grainstone and minor lime floatstone with skeletal, quartz-sand-rich matrix; very light gray N7, very pale orange 10YR 8/2; mainly clay to medium grain size; ranges from clay to pebble; 30 percent very fine to fine quartz sand, mollusks, red algae; 15 percent moldic and interparticle porosity; moderate hydraulic conductivity.
91.0 - 95.0	No recovery.
95.0 - 95.5	Rubble of caved limestone.
95.5 - 100.0	Skeletal fragment, quartz-sand-rich lime grainstone and minor lime packstone, very light gray N7, very pale orange 10YR 8/2; mainly very fine to medium grain size, ranges from clay to pebble; 10 to 20 percent very fine to fine quartz sand and minor medium quartz sand, mollusks, gastropods, miliolids; 20 percent moldic, interparticle and vuggy porosity; moderate hydraulic conductivity.
100.0 - 101.0	No recovery.

U.S. Department of the Interior, U.S. Geological Survey
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Last updated: 20 January, 2005 @ 01:23 PM (KP)