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U.S. Geological Survey
Open-File Report 03-441

DATA REPORT: Geology of Reef-Front Carbonate Sediment Deposits around Oahu, Hawaii

North coast vibracore tabulated petrologic data

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Thumbnail image showing vibracore station locations, click for larger view

Other info:
Core Depth (m) Sand (%) Mud (%) Color Name Color Number Grain Size Sorting Roundness Section Counts CARBONATE Calc Algae massive-encrusting branching Benthonic Forams Planktonic Forams Mollusks Serpulid Worm Tubes Bryozoans Echinoderms Halimeda Coral Frags coral w/ open corallites coral w/ filled corallites coral w/ encrusting algae Calc Sponge Spicules Carb Rock Frags reef rock cemented sediment Indeterm. Skeletal Grains VOLCANICS Basalt Olivine Feldspar Pore Space (artificial)
27v1 0.5 99.9 0.1 grayish orange 10YR7/4 mU-cU moderate r-R 310 99.5 42.5 42.5   16.5   3.5     1.0 3.5 23.5 16.5 6.0 1.0   7.5 2.5 5.0 1.5 0.5 0.5     35.5
27v1 2.5 99.8 0.2 l. brownish gray 5YR6/1 fU-cU fair-mod a-R 297 97.5 36.0 35.0 1.0 19.0   2.0     2.0 0.5 33.0 21.0 10.0 2.0   3.5 0.5 3.0 1.5 2.5 1.5 1.0   32.7
28v1 1.0 99.5 0.5 ple. yell brown 10YR6/2 vfL-mL fair-mod A-r 324 90.9 24.5 23.6 0.9 29.1   0.5     1.4 5.9 21.4 20.0 1.4   1.8 0.5 0.5   6.0 9.1 7.7 1.4   32.1
28v1 4.5 99.6 0.4 l. olive gray 5Y6/1 fU-cU poor-fair a-R 313 98.5 33.5 33.5   17.5   0.5     1.0 5.0 28.0 20.5 7.0 0.5 0.5 7.0 4.5 2.5 5.5 1.5 1.0 0.5   36.1
29v1 0.5 99.9 0.1 ple. yell brown 10YR6/2 fL-cL fair-mod a-R 321 96.0 36.5 36.0 0.5 17.0   1.5     4.5 3.5 26.5 19.5 6.0 1.0 0.5 5.0   5.0 1.0 4.0 4.0     37.7
29v1 1.2 99.8 0.2 grayish orange 10YR7/4 fU-cU fair-mod r-R 328 95.5 31.0 29.0 2.0 19.5   2.5     1.5 3.0 32.0 27.0 4.5 0.5   5.0 1.0 4.0 1.0 4.5 4.5     39.0
29v1 1.5 99.9 0.1 ple. yell brown 10YR6/2 fU-cU fair-mod r-R 333 89.5 35.5 35.0 0.5 16.5   1.5     3.0 4.5 24.0 20.5 3.0 0.5   2.5 1.5 1.0 2.0 10.5 9.5 1.0   39.9
29v1 3.0 99.6 0.4 l. brownish gray 5YR6/1 fL-cL fair-mod r-R 329 94.0 29.5 27.5 2.0 19.5   1.5     2.0 2.0 35.0 31.5 3.0 0.5 2.0 2.0 0.5 1.5 0.5 6.0 5.5 0.5   39.2
30v1 0.5 96.0 4.0 ple. yell brown 10YR6/2 vfL-mU poor-fair a-r 316 93.5 21.0 20.5 0.5 29.0   0.5     4.5 7.0 20.5 19.0 1.5   3.0 1.5 0.5 1.0 6.5 6.5 6.5     36.7
30v1 1.5 98.9 1.1 grayish orange 10YR7/4 fL-vcL poor-fair a-R 309 98.2 45.9 44.5 1.4 13.6   5.0     1.8 0.5 20.5 6.8 11.8 1.9 4.5 10.9 2.3 8.6   1.8 1.3 0.5   28.8
30v1 2.5 97.6 2.4 ple. yell brown 10YR6/2 fL-cU poor-fair a-R 293 90.5 29.5 28.0 1.5 14.0   1.5     2.0 3.5 25.0 16.5 6.5 2.0 1.5 6.0   6.0 7.0 9.5 8.0 1.5   31.7
30v1 3.5 97.0 3.0 ple. yell brown 10YR6/2 vfU-vcL poor a-R 309 92.0 28.0 25.5 2.5 20.5   2.5     3.5 6.5 22.5 18.5 3.0 1.0   2.5 0.5 2.0 6.0 8.0 8.0     35.3
30v1 4.5 95.7 4.3 ple. yell brown 10YR6/2 vfU-vcL poor a-R 288 99.5 34.0 32.0 2.0 27.5 0.5 3.0     1.0 2.0 16.0 7.5 7.5 1.0   13.0 4.5 8.5 2.5 0.5 0.5     30.6
31v1 0.5 99.5 0.5 grayish orange 10YR7/4 mL-vcL fair-mod r-R 293 99.0 47.5 46.0 1.5 13.5   11.0     2.5 0.5 15.5 3.5 7.0 5.0   8.5 2.0 6.5   1.0 1.0     31.7
31v1 2.5 98.2 1.8 l. olive gray 5Y6/1 fL-cU fair a-R 321 97.5 28.0 25.5 2.5 16.0   2.0     3.0 2.0 38.5 30.0 6.0 2.5   6.0   6.0 2.0 2.5 2.5     37.7
32v1 0.5 99.0 1.0 l. brownish gray 5YR6/1 fL-mU fair-mod a-R 302 95.0 24.5 24.5   25.0         4.0 7.5 24.0 22.0 2.0   1.5 2.5   2.5 6.0 4.5 3.0 1.5 0.5 33.8
32v1 3.0 98.4 1.6 l. brownish gray 5YR6/1 fL-mU fair-mod a-r 330 93.3 29.0 28.1 0.9 23.8   0.5     1.9 8.1 24.3 21.4 2.9   1.4 2.4 0.5 1.9 1.9 6.7 6.2 0.5   36.4
33v1 1.0 99.6 0.4 l. brownish gray 5YR6/1 fL-mU fair-mod a-r 332 96.5 15.5 14.0 1.5 35.0 1.0 2.0     3.5 5.5 25.0 20.5 4.0 1.5 1.0 2.5   2.5 5.5 3.5 3.5     39.8
33v1 3.5 97.4 2.6 l. brownish gray 5YR6/1 fL-cL fair a-R 295 97.5 26.5 25.0 1.5 29.5   1.0     1.5 4.5 20.5 19.0 1.0 0.5 1.0 3.5 0.5 3.0 9.5 2.5 2.0 0.5   32.2
34v1 0.5 99.3 0.7 l. brownish gray 5YR6/1 fU-cL fair a-R 317 98.0 20.5 20.0 0.5 36.0 0.5 3.0     1.0 8.0 17.0 11.0 5.5 0.5 0.5 6.5 0.5 6.0 5.0 2.0 1.5 0.5   36.9
35v1 1.0 99.9 0.1 l. olive gray 5Y6/1 fU-cU fair a-R 326 99.5 29.5 28.5 1.0 29.5   2.5     1.0 4.0 18.0 11.0 4.5 2.5 1.0 9.0   9.0 5.0 0.5 0.5     38.7
36v1 1.0 99.6 0.4 l. olive gray 5Y6/1 mL-cL fair-mod r-R 350 100.0 40.5 38.0 2.5 20.0   3.0     2.0 1.0 20.0 15.5 3.0 1.5   11.5 3.5 8.0 2.0         42.9
36v1 4.0 99.6 0.4 l. olive gray 5Y6/1 fL-mU fair-mod a-R 329 100.0 39.5 38.0 1.5 23.0   2.0     1.0 2.0 26.5 24.0 1.5 1.0   5.5 0.5 5.0 0.5         39.2
37v1 0.5 99.6 0.4 l. olive gray 5Y6/1 fL-mU fair-mod a-R 338 99.5 38.0 38.0   23.0   1.5     2.5 2.5 21.5 16.5 4.0 1.0 0.5 8.5 1.5 7.0 1.5 0.5     0.5 40.8
37v1 4.0 99.1 0.9 l. olive gray 5Y6/1 fL-mU fair-mod a-R 315 100.0 36.5 36.0 0.5 25.0   1.5     2.0 6.5 20.5 18.0 2.0 0.5   6.0 0.5 5.5 2.0         36.5
AVG                   96.5 32.1     22.3   2.2     2.2 4.0 24.0       0.8 5.6     3.3 3.5        
 
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last modified 15 December 2003 (cad)

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