|
<br />4n_n_ 'nO?
<br />
<br />,
<br />
<br />C
<br />
<br />-
<br />
<br />,
<br />
<br />.
<br />
<br />,
<br />
<br />I
<br />
<br />WEATHERING
<br />
<br />F"RESH (WI): Body 01 tock ;. root o.;III,u<l 00" dist;Olorltd; ltocl...... s.".toc..
<br />""1 ~t o';d;'" or d;$CoIOlKlo, no HflOI'ot;on of <yO;" bouo>cIorits; no <:1\0"9'
<br />of \<<1.... and no soluliOll;"'lI. __ ';"91' _ ~IOtl;... f'OI;U or. "''''''1<.
<br />
<br />SI.IQiTL't wEAMR[l) TO FRESH (W2)o-
<br />SLICHTLT WEAtHEREO ("J): OilQ;llarotlon or oo:idotiOtl i, IimilK! to -'oc. of.
<br />.... sr-t d'st_ from lroo;:t"'.... _ I.l~ I;f)'Sloll on. 1N1t: '..od.....
<br />sur1'oc:..r.o.......i_toCOl"lpI.I. diKOlorolion or ow,dolion; no.;.ibl.
<br />npotOli_ of r.'" boundoties; Int..... ~ and mi.- leochinq 01
<br />wlvble ",i~. rnoy be preM<>t. Ho......... ti"91 _ Ct)"tolli... 'oeU 0",
<br />.truck,boOJro'tOCOkilnol~bJ....lheri"9'
<br />WOOERATtlY TO SLlCHTLY .aTl-lERtO (W4):..
<br />IoIOO(RATElT W(AI'H(R[D l~); OiSC'OIOt1>li.... or owi6otion ...1_ l<om
<br />ItOCt........._II)'tl'W'o"9houtbodyolroet<;fefT'0m09nnionrnifWrCIl.o...."'.ty..
<br />'.I(bpa<~IoI'O'.-cl""",'; glllroelurl ......roc..or.d;!ICOI....ed OI'owidind;
<br />P<l'tiO'O~i"9019"Oi...boun6ori.....i.ibl.;I..tur.~OIl1~.t>u1
<br />soh..oll ",i_II MOt be ~l., Ieochecl. Horn...... don not ""9 _ rOCk i.
<br />.11loOCk,bodyofroc:ki,,'i9"t1)'..ooI<l!ned.
<br />IIrlTENSELY TO IoIODERATtLY wEATHERED (we}:..
<br />I/oITEWSEL't WEATHERED (w7); EIody of tOCk is disc.olcnd or oo:,dized l"""-'9"<<oI:
<br />olll.,dspor-sondl....I>tT'o09"",on....;......".o'.oll....tlocloyto_..I...L
<br />AJI 11'01;I..... ....-10<;.. Ote diKOIored 00' oo:,d,hd. ond !,ioble; pOrtiol
<br />MflO'olion 01 9"110, bounOor;... rock i. Idobl~ i" .a.. di~tiOft 01
<br />!Il'1l"i1,CII CommorI '" M....i-or'd "-IIi_: l..h,II" 011....., ond leoeh."9 of """bl.
<br />....-""'.""OJbe~I.Ia.RocIlhosdo.tll~..........ln.d<.i1"hotnmoIr.rock
<br />i.-..ouned._"yconbit--..itl'l ~ot.lOrw....ymoruol P'"sur'OO'
<br />by liQht hon'Wo>er bl_ .ill'ooul ...r_. lo plo,," 01 .-eokn.'u.
<br />VEin' INT'(NSELY WEA1l1OlEO (we).-
<br />OE:COr.tPQSED (Wi): Body 01 roctt ,. d;KQI......t or oo:idilll'd 1>vouQI'>out. ....1
<br />,..i.lo"l mi""-Ol. sudlasql.lOrt.l ""ClJ'be unoll..~ all f.ldspoo'I Ond 1.,..,-
<br />mG9......ion ,.,in_l. a.. compI.-t.ly olt.-ed 10 cl~ cornolm MpOrution of
<br />9"l'...boundo<i...(di~II'd).portial....co<ol9l.t._ntrock.t'VCl.....
<br />moybtP'~IwI""""Olnosoil.
<br />NOTE: w..ou...i""O! col~....i.. 0'. nloO';_ p'imarily I.... crystaUO.... roc...
<br />Oftd lhoH .ith f~09"";Oft mi.......l.. .-eo1.....i"9 il'l _.0.... sedimentory
<br />rocu .illl'lOt a'~ 'il IhI cale9<>f'i... ntoblishfll - -.,t_i~ COI"9O"M
<br />moybttnOdilied f.... poort'wlor .a.. cO/'ld,liOtl.OIt an"""liOOl_1> os
<br />hyOrol~lalll!1"olion...,.,....tnOdifjedCl'il...iaor....tablj.l>I'd.lheysnould
<br />bitiHnlilie(londclncribood.
<br />. Cho<OC:I...isticsof II'OCt"'....-foc...Oonol i...,l...,.dir.ctiOftClI-.,th.-iNJ
<br />OlonQ _~ Of' lault. ond tl'>ei, aQOCOoI..t I'act.....,-.: 'or ..ampl. a sl'>I!o.
<br />thol coni... _t.....,"9 10 Q"eoI .-plt>s 'I'I 0 I.~ <ock mou _Id I'IOt .eq.....
<br />IhI _,. roc" ...... 10 be cf....,lied os _therl'd.
<br />..Cornbir>O\ion _,ipl~""l.IWd.",,"_ldi'I"lM.otionofbotl> ......1_."9
<br />CI>orocI..i.ticso..~_.i!l"iliconli..I_..or.,.."...Clloroct...i.lics
<br />I'\Ot.dore-i..bitt.ft'f\.tl>edio!ll'\OShce......ocl...istie..
<br />
<br />DURABI LITY INDEX
<br />
<br />DURABILITY
<br />DESCRIPTOR
<br />oa
<br />
<br />DESCRIPTIVECRITERI.I.,
<br />
<br />ROC\~i"""or.'P<>$U'.._i...i..tocl.itl>l'\O
<br />cSelel.,i__"'''9aft.,ppOSurItI0l\9.rU>on1yeor.
<br />Roc.. ac>eci...... or p:po-.. _1_ lIoir1i... c:roc"i"9
<br />Oft -'oc.. .it"i..l.........tl>.1M.ot1'\O di1099".1'0fI
<br />.ill>i" I ,-orol..posurw:.
<br />RoclI;speCi......or.KpO_.~!~hoi,Ii...CI'oc..i"9
<br />OlI-'oc...ilnin 1_.ort4/ord'SCI99'''90li""
<br />.ill>i" I mot>thol___..
<br />s.p.;i,.....or~""'1~lopho.l1i....~;I'I
<br />16oyonddispl0J'S~le9OfOtiOftofbsOdino;
<br />Of'fd/or di~;OfI .,tl'I," I _ 01 ~
<br />Spec:i......or..poeuo"ItdisPloys~edCl'VCll.ino;
<br />Oftdd'~tion.it"i"ldoy(241louf's)0I
<br />nflOSU.... c.....,11y _'S ond ~ 10 small
<br />..........
<br />
<br />'"
<br />
<br />0I2
<br />
<br />'"
<br />
<br />".
<br />
<br />COLOR
<br />
<br />Tha r.t_1I C1110f' rrst.... (CeoI"';l'C: Soci.l)' 01 A,merico Roc.. Co'or o.ort) srao..kl
<br />be \SC'd. Thi. .,..1...... defina _I c:olar by its hue. value.Ol'lCl e_. Color
<br />IJ"'tlols ..-cl(i.... S'I1l: 5/6....". be ...."..o.d).
<br />
<br />.
<br />
<br />I
<br />
<br />Gl
<br />
<br />I
<br />
<br />I
<br />
<br />II 1 - i ()
<br />. I....J;j,J
<br />
<br />3
<br />
<br />1
<br />
<br />SEDIMENTARY AND PYROCLASTIC
<br />ROCK PARTICLE SIZES
<br />
<br />BEDDING FOLIATION
<br />OR FLOW TEXTURE
<br />
<br /> Sl'di.......tory Pyroclostic:
<br /> Sin ROU':....bf'ou_.
<br /> ;. ... "Iar
<br /> ~ Por1ic:I.ar Lit"jfie(l F'09"""'I lill>ilil'd
<br /> 1'C19"""nt ......, oroduct
<br /> ao.,ld., ....... VQlc:Gftiel-.l
<br /> CGn\Ilomef'll!. Bloc:..1e) brllCcio
<br />" ~ ~
<br /> Bombl.) Voleol'lie1el
<br /> <:000.. <:000," ..........
<br /> ~I_OI.
<br />..
<br /> P.bbl. .......
<br /> CGn\1'~t. lopilli.l_
<br />. loJIill' ondtopilti
<br /> ,~.
<br /> era.....l. c.......l.
<br />1 CO"'QI-'Ot.
<br />, v...., Coorw _
<br /> Coof'M IIOnd So_I_
<br />0>
<br /> "-'::1;....._ c-..... '-wl..ff
<br />,." -~.
<br /> Fi...._ ~._i.......
<br /> fi....or-'J'
<br />0.125 Ii....)
<br /> Veryfi...SOftd
<br />0.0625
<br /> Sill Siltstonel
<br />0.00.391 .....
<br /> Fi...os" F.....tllll
<br /> C," CIGJ"llone
<br /> ...,.
<br />
<br />DESCRIPTORS
<br />""''''
<br />VERT TMIO<LY(bedde<:l.
<br />foliotedor bondl'd)
<br />tHICXlY
<br />r.tOOEAA.l"ELY
<br />tHINLY
<br />VERT THINLY
<br />lAltIIIOATEO(Inlenwly
<br />loliatIdOtbol'lCled)
<br />
<br />THICKNESS/spACIHG
<br />er-t... lhoft 10 II (>.3 m)
<br />.3lo 101t(1 to.3"')
<br />Ilo3n(JOD.......IOl m)
<br />0...3 10 I" (100 10 JOO mm)
<br />O.lloO...lft~')()1o 100 """I
<br />D.OJ (3/8 in 100.1 II (10 lo.)() ,.,"')
<br />Lea It..... 0,0 II (.3/S inl (<10......)
<br />
<br />BEDROCK
<br />HARDNESS/STRENGTH
<br />
<br />f<oISr....... from ~i_ i~ roc". blocl< SI'>ope-d (Qn9l.tlor lo ""bO~..I....).
<br />001 Solidilied "0100 Pl_ie mot",iol _.1. i.. "'9hl. ~ elosts.
<br />
<br />EXTRE"ElY~(Hl): Corw. '''''iI'''''''' Of''''___ eofW'tOlbe aerate"",,, _ill>
<br />....".OO'sIIOf1loiclt;OGnOtl!ybech.pe>ed.itll.epeoledl'leowJ'lIo.........btows.
<br />VERY HARO (ta): c-..ot be SCI'Otel'll'd .itl'l .....if. or _rp piCk.. eo.. or ""'l"""nl
<br />breoIt:s.iUtrepeot.edl'leOll'J'l\on'In'I4!rbl-'
<br />HARD (Kl): c.c... bit sc'atched .i1" ....if. or sharP pic.. .ill> difficulty (t>eowy
<br />p'........).~.............b._req..iredIObreo~spec'.......
<br />r.tOOEAATELY~(H4): Corobe scroId>ed .ilh....il.or_rppic...ithli9".....
<br />_01. pr~ Cor. or "09"'1""1 breol<s .i11> ..-rOI. I>Gm.-r bt_.
<br />~T'(lYson (liS): eo.. be 9'-.:( 1/16 il'ld> (2.......) deep by ....il. or_'1>
<br />pictt.iUtmo<leroteor~pr_.. Core or lf09"'l!"l breoks.i\" li9M_
<br />bl_orhoeo>oyrnon",,'prltSSUl'e.
<br />sort (H6). Co" be 9foowd or 9D"ged easily by ....;1. or IJt>orp pic" .it" light
<br />pressure, con be IO"'Otched .ill> t'"9en'111lil. 8rft!l<s .ill> IiQl'Il 10 moderate...........,1
<br />"'_.
<br />VERY son (Jot'): C4n be 'eadi'y .""""Ied. !Iroowed or !IOU9"d .il" Ii~emoil. or
<br />eOf\oOl'd.ilho...if..~l<s.itl>'i!l"I.......""I~.
<br />,
<br />J:!r"1 bedroc\ "'''110I"1... \hofl H'. V<<'f Soft. i. 10 bII Oesc:~ibe1l ""ino; USBR 5OD!t-86
<br />("'_1 CI....ificoliOll of soil.) c_i.tencyc:horocl..ist,cs..
<br />
<br />IGNEOUS AND METAMORPHIC
<br />ROCK TEXTURE
<br />
<br />TEXTURE DESCllI~
<br />
<br />A,VERAC( GAAIN OINolfTER
<br />
<br />VERYco-.RS[ CRA.IHE:D >10 """!>J/S i"}
<br />ORPE:c;u....nnC
<br />COAAS(GRAIHED S-ID ......!3/16 -.31l1 i")
<br />r.tEDJUW GRA.IHED I-oS...... 1/.32 -.3/16 i"}
<br />F'INE GRAINED 0.1-1...... 0.004 - I{'u '"I
<br />..lPHAHITIC (Conr>otbll <0.1",," <0.004 jl'l
<br />......;tl'It""_ided.,..>
<br />
<br />ADDITIONAL TEXTURAL
<br />ADJECTIVES
<br />
<br />PIT (pined) - pi"""',. 1a O.D..1 tt (.3/8 ...J (<I to 10 mm) OPeftirwp..
<br />vue (!"'911':) - Small Ofl"tOi!'!lS l_11y lined .ilh crystol.) l'OftfiJi"9 ... dia""".... from
<br />0.0l It l.l/8 i..l to D..JJ It (4 in) (10 ta 100 """).
<br />CAVITY - An operli"9 Ior9<< tl'IOrI O..JJ It (4 ii'll (100 .......). .i,. oncripti_ 0t1I
<br />.equi,"".Of'Id04jec;t......SUchO'll_".lofge.lllc...""'YbII\IHd.
<br />HOHETCOWBED - If ~ ~I> ,...... only I"i.. ..011. wporote inc!n.i6w1 pill
<br />ar """9" ,,,'s I...... furthe<' (lnCribn!hI precedi"9 -'01.... to indieet. e.II-Ii...
<br />,-
<br />VESICLE (onicu'o') - Small opot1>i"9!' il'l .....c:or>ic ~ 01 ...,dabl. If>Ope and .i,e
<br />lormed by ...truppl'd !!OS bo.bOl" dI.ori"'9 solidification.
<br />
<br />.,_ 1_.../~_l>C:~IO___
<br />11"-~...,,, tD..:........s_1n'1SIOII!r.
<br />ALWAYS THINK SAFETY
<br />
<br />.-.sOQln"nI
<br />_",....r~s...
<br />..........",.~...
<br />
<br />GEOLOGY FOR DESIGN &- SPECIFICATION,
<br />STAMJARD DCSCRIPTORS AND DESCRIPTIYf
<br />CRITCRIA FOR ROCK
<br />
<br />""""",,,_~~_ocnut...~_~_________
<br />___~~_____IIDt__~_._~______
<br />~~-~----
<br />--
<br />
<br />~
<br />
<br />4
<br />
<br />r.;
<br />
<br />-
<br />
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