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a <br /> HALEY&ALDRICH CORE BORING REPORT BORING NO. CH-CR1 PAGE 2OF3 <br /> INCORPORATED PREPARED BY: A.L.Howard <br /> Depth Drill Core Recovery <br /> in Rate No. RQD FIELD CLASSIFICATIONAND REMARKS <br /> Feet Min Per Depth Ft. % <br /> Foot Ra Ve <br /> +15 (15.6) -19.8-22.1 ft: black and brown,mod.hard,biotite schist seam with calcite-filled joints <br /> parallel to foliatiion. <br /> _+15 C3 7.0 100 5.3' <br /> (760/0) NOTE: Began coring with new hard rock bit at 22.6 ft at 1030 hrs on 6/24/94 <br /> 22.6 22.61 <br /> 22.6 Very hard to hard,fresh,reddish brown with clear(quartz) and gray,fine to very <br /> coarse grained,GRANITE PORPHYRY:rough,planar horizontal drill breaks;vertical <br /> 13 C4 2.8 95 2.4' to very steeply dipping (>50')quartz healed joints, accessory muscovite; moderately <br /> closely spaced, quartz-filled pits up to 1/4 in. <br /> 25 ( %) NOTE: Stopped run C4 after 3 ft due to poor penetration-sloughed gravel wedged <br /> 25•5 against core piece preventing core barrel advance. <br /> 25•5 Same as above,except: <br /> -granite gneiss from approximately 25.5 to 26.0 ft. <br /> -very close to close horizontal and steeply dipping fractures and joints. <br /> 3 o C5 7.7 79 2.3' <br /> -granite gneiss from approximately 30.5 to 31.5 ft <br /> (23%) <br /> NOTE; Strata change marked at 34 ft-midway between lithlogy change in C5(32.6 ft) <br /> and top of C6(35.2 ft) <br /> NOTE: RQD for run C5 includes 0.8'of core that is fractured vertically,but which is <br /> g essentially a sound core piece> 4 in. <br /> 35 35.2 <br /> 35.2 <br /> 10 Very hard, fresh to slightly weathered, light to dark gray and white,fine grained <br /> 10 GRANITE GNEISS;gneissic foliation very closely spaced at 30'dip;very close to <br /> close, rough, planar open joints parallel to foliation; secondary, rough planar joints at <br /> 10 70'to vertical, some quartz healed joints (both sets); open joints have yellowish <br /> 06 5.0* 100* 2.3* brown iron stain coating. <br /> 10 NOTE: Pulled Run C6 after 5 ft due to poor advance rate-inner barrel shoe came off <br /> (46%* downhole;pulled drill string. Bottom 0.6 ft of C6 recovered with C7. <br /> 10 40 402 <br /> 5 <br /> 5 <br /> -Pinkish granite porphyry seam from 41.5 to 42.0 ft. <br /> 5 <br /> 5.3 100 69% -Mostly pinkish granite porphyry from 42.9 to 45.8 ft with pink granitic stringers in <br /> 5 gray granite gneiss above and below porphyry layer. <br /> 45 5 45.5 <br /> FIELD HARDNESS BEDDING DISCONTINUITIES WEATHERING <br /> V.HARD-KNIFE CANT SCRATCH V. THIN < 2" V.CLOSE < 2" FRESH MODSEVERE <br /> HARDSCRATCHESDIFFICULT THIN 2" - 12" CLOSE 7' - 12" V.SLIGHT ARE <br /> MOD.HARD-SCRATCHES EASILY MEDIUM 12" - 36" MOD.CLOSE 12" - 36" SLIGHT V.SEVERE <br /> SOFT-GROOVES THICK 3V' - 120" WIDE 36" - 120" MODERATE COMPLETE <br /> V.SOFT-CARVES V.THICK > 120" V.WIDE > 120" BORINGNO. CH�R1 <br />