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— 973-1164 <br /> 4 <br /> J,� io,1�� <br /> ^ Advance Outwash Sand-Advance Outwash deposits consist�r The e� <br /> deposited by meltwater chaI'I'els'n fr°nt of an advancing g� or stratification. <br /> •— deposits are typically sands and displTy some degree of]ayerinS� <br /> Since Advance Outwash deposiu e�d nse They also have a relati ely 1dghS <br /> � glacier these deposits are 1yp' Y rY <br /> .� permeability to water. <br /> Advance Outwash sand deposib�wlo��at Sha n 2(F�eg�2�) The e <br /> ]Oweat portion of the head acarp <br /> ~� antwash sand deposiffi consisted of dense,olive gcay,medium to fine sand with <br /> y���oarse to fine gravel and silt. Crude stratification and some M'�debris <br /> were also visible. <br /> �� Glacial Tilleg�n charfrao�rii��boulders Till'�s depos ed at the b se of a�g <br /> particle su $�S <br /> glacier and has been overridde y an�d consolidate y by ils gceat wenghallB�s e <br /> •; of its high density and generall hi h silt and cla content,till ge Y <br /> , low permeabi1ity. <br /> ,•� G]acial Till was observed above the Advance Outwash sand in the main S�rP <br /> , exposure. It mntained an upper weathered zone lower unweathernd e�dium to <br /> • Both the sveathered and unweathemd till.cons'i nd ht�tle ilt The w,eathemd <br /> fine sand with little 10 some matse to fine gra <br /> {�]1 exhibited iron oxide ataining causi�g a sonnewhat mottled mlor appearance. <br /> y The mntact betH'een the till and�t��so�'�l exposure w uobserv aas <br /> , gradational and difficult to PinPo <br /> Recessional Outwash-Recessional Outwash depos'�e cl h��t overlies the <br /> that was deposited by the m Y�'��e r Therefore g is less dense than the <br /> till and was not ovemdden b g <br /> underlying glacial sedimenb. The Recessional Oulwash deposib are�ually <br /> , loose to compact and quite permeable. <br /> Recessional Outwash sand was observed above 1he till'n the ma'n Smrp <br /> exposure• The Recessional Outwash rnnsisted of mmpact,moderate yellowish <br /> brown�medium to fine sand with little to some Swasn resean e Howev�av� <br /> Abundant wood debris with imn oxide staining P <br /> „ portion of the outwash may have been contam�na�d by the overlying fill• <br /> Colluvium-As mentioned pieviouslY��°uuvium is a and e a d so'C lluv iun is <br /> ~ deposited on slopea through the effects of weathering B� �'• , <br /> generally loose and,depending somewhat on the parent soil matenal�is <br /> ., relatively permeable. <br /> � Golder Associates <br />