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Open-File Report 03-441

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

Leeward coast vibracore tabulated petrologic data

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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)
17v1 0.5 99.7 0.3 l olive gray 5Y6/1 fU-mU fair-mod r-R 316 91.5 27.0 25.0 2.0 21.0 3.0   2.5 1.0 19.5 11.5 5.5 2.5   9.0 1.0 8.0 8.5 8.5 3.5 5   36.7
17v1 2.5 99.7 0.3 l olive gray 5Y6/1 mL-cL moderate r-R 292 94.5 34.0 34.0   15.0 3.0   2.0 0.5 27.0 18.0 5.5 3.5   11.5 3.5 8.0 1.5 5.5 3.5 2   31.5
19v1 1.0 97.8 2.2 l olive gray 5Y6/1 fL-mL fair-mod a-r 327 94.5 25.5 24.0 1.5 30.5 0.5   3.0   23.5 16.5 5.0 2.0   3.0 2.0 1.0 8.5 5.5 3 2.5   38.8
19v1 4.0 99.4 0.6 l olive gray 5Y6/1 mL-cU moderate r-R 317 91.0 38.5 38.0 0.5 10.5 5.0 1.5 1.5   24.5 12.0 7.0 5.5   9.0 3.5 5.5 0.5 9.0 5.5 2.5 1 36.9
20v1 1.0 99.3 0.7 l olive gray 5Y6/1 fU-mU fair-mod a-R 293 95.5 38.5 37.5 1.0 22.5 0.5   1.5 0.5 27.0 22.5 2.0 2.5   4.5   4.5 0.5 4.5 2.5 2   31.7
20v1 4.0 97.9 2.1 l olive gray 5Y6/1 fU-mU fair-mod r-R 331 97.8 36.8 36.8   20.0 3.2   4.1 1.4 30.9 20.9 7.3 2.7   3.2   3.2 0.5 2.3 1.8   0.5 32
21v1 1.0 99.3 0.7 l olive gray 5Y6/1 fL-mL fair-mod a-R 327 98.0 38.5 37.5 1.0 14.5 1.5   2.5 6.0 28.5 27.0 1.5           6.5 2.0 1 1   38.8
21v1 3.0 99.0 1.0 l olive gray 5Y6/1 fL-vcL poor-fair A-R 325 98.5 29.0 29.0   18.0     1.5 3.5 36.5 22.5 12.5 1.5   5.5   5.5 4.0 1.5 1.5     38.5
22v1 0.5 94.5 5.5 l olive gray 5Y6/1 fU-cU fair-mod a-R 324 94.0 30.0 30.0   18.5 0.5   2.0 1.5 37.5 25.0 10.0 2.5   2.0   2.0 2.0 6.0 5 0.5 0.5 38.3
22v1 3.5 96.1 3.9 l olive gray 5Y6/1 vfU-cU poor-fair A-R 317 86.5 30.0 25.5 0.5 7.0 1.5   1.0   42.5 32.5 8.5 1.5   2.5   2.5 2.0 13.5 8 4.5 1 36.9
24v1 1.0 99.9 0.1 l. ol-yell gray 5Y6/1-8/1 vfU-cL poor-fair A-r 327 99.5 37.0 36.5 0.5 14.5 0.5   2.5 7.5 28.0 22.0 4.5 1.5   2.5 0.5 2.0 7.0 0.5 0.5   0.5 38.8
24v1 3.5 97.7 2.3 yellowish gray 5Y8/1 vfU-cU poor-fair A-r 359 100.0 26.0 25.5 0.5 25.0     3.0 15.0 22.5 19.5 2.0 1.0   3.5 2.0 1.5 5.0         44.3
25v1 0.5 98.0 2.0 l. ol-yell gray 5Y6/1-8/1 vfL-cU poor-fair A-R 332 99.5 32.0 32.0   21.5 2.5   2.5 4.5 29.0 22.5 6.0 0.5   2.0 0.5 1.5 5.0 0.5   0.5   39.8
25v1 3.0 98.8 1.2 l. ol-yell gray 5Y6/1-8/1 vfU-cU poor-fair A-R 296 100.0 32.5 32.5   19.0 3.0   1.5 4.5 31.5 20.5 9.5 1.5   1.5   1.5 6.5         32.5
AVG                   95.8 32.5     18.4 1.8   2.2 3.3 29.2         4.3     4.1 4.2        
 
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last modified 15 December 2003 (cad)

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