Assignment 3 field photos notes, september 18, 2011
HORNE LAKE FIELD TRIP – PHOTOS &NOTES – SEPTEMBER 18, 2011
Site 1 – At base of trail.7-8 m high and 6-7 m wide limestone bluffwith 1-2 m thick dipping limestone beds.Number of small solutional holes visible inlimestone outcrop
Site 2 – At 6th switchback on trail orsomewhere nearbyModerately steep slopes in forest with noevidence for surface water flow. Lack ofsurface water flow a possible indicator forkarst. Evidence for dry gully/ small lineardepression.
Site 3 – At 8th switchback Limestone outcrop with slightlyoverhanging block. Well defined beds inlimestone dipping 50 degrees to south.
Site 4 - At 3rd crossing ofRiver Bend GullyDry valley upslope. 4-5 m long,20-30 cm wide and 1-2 m deepgrike/solutional hole. Outcropwith well defined beds nearby
Site 5 – The big and small sinkholesSmall lookout on side of trail. Three sinkholespresent – one large, one small and onepossible. Large sinkhole oval in shape 25-30m long, 15 m wide and 3-5 m deep. Twopossible drainage foci, with two smallsolutional openings in one. Possibly twosinkholes that have coalesced. Smallsinkhole nearer to trail 5-6 m diameter and 2m deep, 60-70% sideslopes. Smaller lessdefined depression upslope of small sinkhole– possible sinkhole.
Site 6 – Just above River BendEntranceUpslope – 2-3 m wide channel in 20-25 m wide and 6-7 m high gully. Dry.With cobble/gravel channel leadingdown to cave entrance, acting as aswallet. Downslope possible overflowand old dry valley.
Site 7 – Cougar Cave areaCave entrance 1 m by 1 m, with steepdrop into passage <10 m long. Lots ofrounded limestone outcrop withexposed epikarst surface and solutionalholes and thin soil cover. 6-7 m longand 0.5 m wide and >1 m deep grikefeature.
Site 8 – On trail backdownSloping trail back to Site#1 - plant and forestinterpretation?