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HomeMy WebLinkAboutm30289.3GT II7 IIIIIIIIA f NA I4Ir IIII- A rv, II7 I47 If IIL IIII7 7/ I* I- # 1 Compacted F Approximate -Limit o f II0Ij( I---------- ------------- Ape 17 jr > T 1 I. . ......... Tssits ------------- Sl Ss ey IAI14 ITD. A Ir4 ji It 7LP4 Iftz 9 I7* 4 IAll PACI -42 t + Y' s ILL IA 6:0. 67 I4 Ir z2 I' r 9 tLB _!5 P 70,c T Ia I& 4-7 IL Ilip T.N, II2 4r ................... i s t sIiE "A L or40 25,E IIIIft 90w 4 S] t T LB. 5P R4 of$ 357F 1 10 tf4n #4felt Sit 4K,15, IIIILtj 2 Re5 Id:. ofLB6,5-11 w T .2IB64—Z 11c: NOOE L\ t + s 4 Ilk, 1 L 6 TA-7 1w I, P r1JJJ!'j LIZ ll30E& re-. 64 20 W of 1/0 D. i8-50 2 lk ife if 10 fill fj evil I - . .1. IF 3 11111TD. 6 LH I?-- I Is Il, ft IIIIIIIIt7 I.................. III GEOLOGIC LEGEND SURFICIAL UNITS Al Co I ALLUVIUM: SAND AND SILTY SAND DEPOSITED BY STREAMS IN THE MAJOR CANYONS AND TRIBUTARIES. COLLUVIUM, DARK BROWN TO BROWN CLAYEY TO SANDY SILT (MAPPED ONLY WHERE THICKNESS EXCEEDS 4 TO 5 FEET). BEDROCK UNITS Sjt+SS SILTSTONE + SANDSTONE: BROWN TO GRAY SILTSTONE; SANDY TO CLAYEY, IN PART DIATOMACEOUS, THIN - BEDDED: WITH 20 40% SANDSTONE, YELLOW -BROWN, MEDIUM TO FINE-GRAINED, THIN -BEDDED. SYMBOLS CONTACT (DASHED WHERE APPROXIMATE, DOTTED WHERE BURIED). jo,E-strike 3-dip BEDDING ATTITUDE (DASHED WHERE BURIED) ATTITUDE OF SLIDE PLANE (DASHED WHERE BURIED) ATTITUDE OF BOUNDA Y OF PULL -AWAY ZONE OF SLIDE OR FRACTURE WITHIN ZONE OF TENSION ADJACENT TO SLIDE. ATTITUDE OF BEDDING ITHIN SLIDE MASS (DASHED WHERE BURIED). LP63-1 BACKHOE TRENCH EXCAVATED DURING THIS IN- VESTIGATION (TOTAL NUMBER 28) LB 63-1 BORING DRILLED AND LOGGED DURING THIS IN- VESTIGATION SHOWING TOTAL bEPTH (TOTAL T D. 17' NUMBER 18) 11 L L CROSS-SECTION (TOTAL NUMBER 11) APPROXIMATE 13OUNDARY OF LANDSLIDE SHOWING LIMIT OF SIGNIFICANT MOVEMENT, PULL -AWAY ZONE, AND ZONE OF TENSION FRACTURES. . PULL -.AWAY ZONE.CONTAINS THICK COLLUVIUM. PULL -AWAY ZONE LIMIT OF SIGNIFICANT MOVEMENT ZONE OF TENSION FRACTURES 111111 111111 BOUNDARY OF LOT COVERED IN THIS REPORT BOUNDARY OF EASEMENT WITHIN LOT COVERED IN THIS REPORT BOUNDARY OF RESTRICTED USE AREA (TOTAL NUMBER 1) SHEET 3 F. BEACH LEIGHl"ON & ASSOCIA71-ES, I NC 300 S. Beach Blvd. , La Habra, California 90631 GEOLOGIC MAP F TRACT 30289 EQUESTRIAN ESTATES,DIAMOND BAR COUNTY OF LOS ANGELES Draf ting by: E. 1. 0. , H. F K. Date: FEBRUARY 17, 1972 Geology by: D O.ASQUITH, L.R, tie: C=40' r , 1-1: ./ ,1, 1_-, 4( -- , 5 ( ,', w-, ., I (- 1, r . 1,.j- 7, _- r_ 1 1A . . . I. _. 9 __. a Y.., 0I,- "! 4. .,%. .::\ I I: A ,. rI 3. : ±- III . .. 1,, ,..... A.. 4 .- 1y.*._ w , I V I- f. 1 _ . , m . -.! , I 1.-; 2I N1-- I N ,-, 1, rI,. - 4, I--_- : x - .,- ,., I _-, I. - f,_-_ m-; _._- ,_ I I - /-_.. I ' I /_ mwI /- ,-. I ' I .. I_ --_ ,, _"._"_,,/. , I. t :- i. A I -. 3- . ,/- -, -.Z. :_( I_ 1I0 1(- 11,-, 1 " I 4 f..1 l- . I - 1,, - 0- % C ,- I -. _ -- 1-_ y/ N11,'. - I LI'?,. 4. 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I.. . ,, r- i ,. wI I 0--1i&. p..-46. -iI-. 1,_ I./ ", 7" I ..ft/ / :. -w , 11..., .. - - I ' . I ,.,( C, 1 v I. 0 w,* , z , . . _ - .. . I f ' x \, - _ 4 - _ ` - , __-- ____ ( GEOLOGIC LEGEND 1.- .- L..,. i"- , - , ,. 1, .. 4 , { V. I'I .;_'.,.: ..",.. . . ! !, . -;. I , . 1,:,_ 1-. t- .. l, , 2- -m., . 7. .-.. ;:..._!...'". .-1.S:.. i,-;,, 1 I . I .-. ., Iww-`, I . II . k.-. v."..,, ', ,", I.. I-, t, . I I11. 1.. o 0,. 1 . 1.-,.- . , 1- . " III'',- . 0I... I :. ,.!... L.,', I-I' t.. 1" '. II.- '_.. . . r . I ....1-- _-I1*. L, 11 ' 1?.,.,".- ." - 11.. *. - , ,,. 7C2... I - - ". — 411.0:.' iI 0I— 1. I . r . ..-- ,.-,-, 19. -`,_ 1- 11- .. : m .- II.- 1 , .- -: U. 4:.. 1- L I ,,-1 "- .., Av-* .. 1z7-' - 4IS. ,- 1-k, 1j1--- 1-- A." J, Io- .. II , KiI- .,. ...., o.. ..." --. I:, :-., ,* ,,-." 1.-'... i. . V. :, 1,., , , ' I. -.._.". TI . '. I-- t".. ,. oV-I.' , II!. I - , I- . w- ..... ,,-,,., '..-,". . p;- . -,'...--' -.. .-.,,, . ' I4- .. W 1. LI*. , I.: ', -.!.. !, . .... I," .. . " . 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STREAMS IN THE MAJOR CANYONS AND TRIBLTARIES. O' j ; ( 1 , ,#" - ) COLLUVIUM: DARK BROWN TO BROWN CLAYEY TO SANDY r c EXCEEDS --- . P D O III .. ,__ 1113 I 11 11 , IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII I I11 B IMZE _ - - - . = _:_1 . 1L.. 1,',...1, . J`_1114.. .. I -, 1.;Nv-. I%-t,.. -P.-I;I.'-;... ,,I-, a. , .-, r, ..-l SILT MA PENLXWHERETHICKNESS EXCEEDS 4 TO e.I,.).....r:..1. ''_ I- 1? . 5. .I;. , t,.. , I ., k_- *. ,. I. ",. .-- .., .. 4 I1. N.', .-.__. rr ,, -..., ,. l_ 1; , , L I.r.."..,.. w ,.'-,,.. ,,". ._.'. : i. . r.,.;.".,- 1.... Il . "- FEET j i BEDROCK UNITS I I , lSILTSTONE + SANDSTONE: BROWN TOGRAY SILTSTONE; r ;, -/• 1 S I I+ SS SANDY TO CLAYEY, IN PART DIATOMACEOUS, THIN- BEDDED: WITH 2O- 40% SANDSTONE YELLOW - BROWN age , 1 f' - l i ! u ` f , 1 MEDIUM TO FINE-GRAINED, THIN -BEDDED. I.. I. I.- . . I ' . I -W/L ,-\ , ':. - /--. , . . / , // ,. I . /-, -I _. -N, r -K.. 4 W. -_ / , I7I 7 5 - --- _.. _ . . . f . d4. I ru . SYMBOLS I r - . y J , t. A - , c , , 15 ., / , r ,--'---.—. • • CONTACT ( DASHED WHERE APPROXIMATE, DOTTED WHERE J L _ . r ` BURIED). . a r 30E-StrikB a' : ... / I ( DASHED WHERE BURIED V. _ (DASHED BEDDING ATTITUDE ) lo 63 I. rw , '` / ` , - ATTITUDE OF SLIDE PLANE (DASHED WHERE BURIED) askr - . . ! x. x f . o ., _ z0 . . , 1` - i f ATTITUDE OF BOUNDARY OF PULL - AWAY BONE OF E SLIDE OR FRACTUREWITHINZONE OF TENSION v I _ f 1 ) Ir ADJACENT TO SLIDE. i t 4 R - f % M1 / o ; , c . - ATTITUDEOF. BEDDING , WITHIN SLIDE MASS (DASHED t Y 11 r .= . '°_ j] I . , - _ WHERE BURIED). a > ;> "' ,r' S .. ( . . 1, gyp, t1, I-.lI. qii/ . . 6-. . 1-.._^I. _I f ) _-- 0II ,..1, ,-A , % A1 . I -. -, I r I .. "I.1 : .II ' . I . I 11 I . I :. f 0, •, ,' 1 © BACKHOE TRENCH EXCAVATED DURING THIS iN- l'~`'' t 1157 * - , Sr VESTIGATION ( TOTAL NUMBER 28) LB 63 r : — _, ;— i Z 1 I /, lf-• `-+ J'' 1 BORING DRILLED AND LOGGED DURING THIS IN- I..'_. ... . 4. 7;'.-'.r,I'.- _*- .i ....'1 ".,%L,I I4-.. ',xI I' . . . '. .,, ",, --. 71 - 7..._-,4 .1, ,, .,-I .i."I0 .. _11..II 1I: — ... I ,.% / . _I- . I 7. '. , 1...., . / . ,. ,. -.- , .!1"./-. 1. I , - . -- -/ .,-. / _I . . I _, ..I _.'. _. / r../I.,- 11. I. I_. r I.". , I eI- . A _ I _ ,_ I . N , - 1P1.. II) II , T.. ..,' k., I,-- L, . -, N-. \ I- .... . r., iI\ a - , # - . VESTIGATIONSHOWING. TOTAL DEPTH ( TOTAL r1 r", rf r I T— r _.+- 1 NUMBER 18) I1 _.,_. I1/., IV'. 1I/.. 1I, I . . .,?. . ./ I.- t' z_ 1lII _. l- 4., . eI./ -, .- Ai..-1 1t) z,?",... V. I,. m . ,(- ,. ,* 0 -. IAI ,, _. - 0*_ I*.. . —N1.. / /1?v., / . I ....eI . r.;- . .. II. -,. - i\. .., l. I. ,.I. ..- . I, . , e.. _\'..I-? . I - I .'. 44- I.:. - --.- 1_-- 1- 4_ -..,. . 1 1-. --. - , I, I ( 4_.. r -. 1 1U.,-,- '/ I I .-- 4 1, -%-_1.- II t) _- . / I . ', 1-, 1, -. I 1 1. I. I.. , . II ; I I. ' 1 / I. IV . I, ,.. .," '-,,. z- I- 0_ 1. , o%. I._- %-:'_ h _ F4.: I.\...,.'%_ , _. .-.. I ._ ij- 4-, _,\-.?..7 --.- 1,.." dI - 1,...,... i.._ o ..\ . . N- , . I -. I ,. .I 1_-JI:-.,'. I! ,- i1->"III1. '. / j. 1.. 1, 11..-,. _ i 1." 1..- 11: 41 / 4..I ,_ 1I . : . I . h 1\%:- r-"-. I. I__ . 4 4.;-, I: 1.,, e. .-, 7, I,, L2 .%:-I I _/ N 1) 1 I . .\, . 4A1I j' l.—_. I i.- _ I - . -/,- 7..*- SI- -. 1-. 1., k- "-,'_--, .. 7., T ,, \.. - t1',-- I . .. 1-. . . -. -,:- ,' II-. _ o- -,"- . 5, 1". - 4 'II. . . -* __ , I"" ... 4II `_--, .__ 4. 3_ 1-.' 6 ;- . ." 1 , .(. E; II \ 11 yt I - :/ - i.-! -- fI . ..% Z( I. -.. .. , Y) 1 y1I. 14S. 1,.':, /),%.. N I , I 9... I,,_._.,, I _- 2, 1_ I.. * i I . 1I ,%_-%...,_ z%. . . %- . , /- .. 1I.., "C.,- ":,._. 1O, ,4 ,. 1. , ; . . I" e-,". I - . TI( . tI I _, IA; k h ... I -.._! II D. " . ..I".... : . I - . , ., y l. I._.. . L.-- I I ._ .. : .. C1- . 1r %:, 1-., : 11- 271I 1:,- I.) -_). I I 0i;, - 6 ... 1 2 P - _ 5', 0. _ ' .:\ I , / fI_-; - I_ ,` 1-. ; v 1, I, I IA/._ 1. 1 I / f- 5.. 4. 1- 1., I..._ 11_,. 4-_. ._'. 1/ .,.b1I_.-" , '-:. " .#. / 5-_. 0I , , 0iI 4-"._. . . u. .- 1./; 1 i 0. 1 :( ,_I I .- I, ,, 7 I. . I I .. I II . 01IN1- ., I I . , I0 , I -. . _. - I.,- I_ I i11-, _ - -_,..-' - _ i N--_-/ \- 1,- 4_,\ -- I0 _'- I l I- . . , W- 11I-,_ . 1, ,. I I 1I-,- I0 I-_ I. i! I., .,.:, \,- T1.-! I.,. I 6',,_\ 1 A_) . _ (\. 1__ ._ 1II-. Y., I._ nC . I- 1 .. ,., I.- ]. I ,. r. I-. . . 171- 1161.:. 1..,.,:" j-, I4!_ I.. I. I,,se -. I _-._. _". I- _- ' l_ y. f r _ 1L- I1- ,,..! I_ I -,.,),—. 4., LN I. tires ', I , 1,: _ r I q" k,` _ . . , - • 1.`.- ~' :' : tI f •` • ` h ',,~ - - , L I11r17rr1r1r.1L CROSS- SECTION (TOTAL NUMBER II ) o is _ I. pl dT ' /._ , 6I nE i r 1 . 1m r t r . tFAPPROXIMATELIMIT OF EXISTING FILL c i \\ 1 d; f ' , : c ,0`' - r, ` I&. . f > N /` , •, ' G / < _ _ sZ: - .' • 1 . A+"'" APPROXIMATE BOUNDARY OF LANDSLIDE SHOWING x b a .._ ' b .w: " I "''+ LIMIT OF SIGNIFICANT MOVEMENT, PULI,AWAY J < . ! 2 v, 'e.` - ," _..-. _ - I a%' a .)qe, h,' r T - " '_& 75 M ZONE, AND ZONE OF TENSION FRACTURES. r ,, r -; 2c. t. :,ems i , PULL -AWAY ZONE CONTAINS THICKCOLLUVIUM. r+. ,,-16 ' 1 I -' N"` yyr ." tt '/,, ~ " rL, .1 r 1 ' _ PULL -AWAY ZONE . h Z. / ` .,,\ \`* - _;-- r : • `. I '_ LIMIT OF SIGNIFICANT MOVEMENT v ( 2e. ` ` ,r J ' r r" " / \ ZONE OF TENSION FRACTURES V / ! I 1 f J f - t lJJ/// ` - ,` ,1ce ( \' . /, -- ,>' ? 1 r_ r. r Ia BOUNDARY OF LOT COVERED IN THIS REPORT s^. r \ '; IA C , ., - ou- r t I L .+ t (_, f Q'7 3 a , \ r - ,N Y ' ' '' y J xa- ` 1 ` i ' sr. ' I - •, `i c - J ' y .' CP % f a. 1 J, // „ Vo61 `• `- - , ) . - Al .. P " V it _> va \ ` y / ! y ,` n ` a v I / 1 _` ~' •'] ' .••1Kam. F' 1' p A/ f ` 1 - I 1 :f , s f ti's ;,;:-, - - A ;,;1 -99.. }- „ 314 fiwv8 ' f , ' ' .._ .,,.:.. _. T T COVERED IN I - BOUNDARY OF EASEMENT WI HIN LO O I0.1- .. _.__ /- -_' I- I,(\ --v-- \0 I r.11 I _j0IIA 1- t I I-1rr- .,I1,j. I - I <1-' I I.' I.,_ I . I: _. k\ 1 I "! .(. . -_ ?.4I_, I, , - / ,\ I%.-._ -7 ,, I.". . --./f. -. LI-'--- . -- .1—._" 0. . k 1- -" /"-"I' I,- '—.I-I . -. --. I& . N._0<.',4',. ''I i.!., 1.1 --/%-. 7_- .'I.*, .- e' ' ; <.: I. °'l j c , i // A N THISREPORT t to 2 ( 1 . 1 / _ - 8D- f 71 y' ,` j r # 1 x G - 09' . I - _ -_ " r BOUNDARY O R I .") V\ I!. . % jI-' .... --. .-\. -- I, --- I. ..- '/ i ./ %.I-L 1 ,. - . I./ II 7 ."\ -/ IL, I . _ r,.- I . - I1I* 171)_*,. I..) - I. j41, I ...+ 1II - I) I f,_- I i __,_-' ,.` _ ,l_ ". 1, ., I.,- , fL I .. - -I- -..#.I v . s . ,• , . t _ .4 *` I *a J r •I :r:• s :•::xx •:F ESTRICTED USE AREA ( TOTAL NUMBER 1) r G/ ' i 1 r. r O1. G \_ i •\` '. _. hf, pp) v I %% iS -.._ - . 17 _ - '` .;" _ f I , ' 4 '' ; %, •`-.. . I' ; r/ GRAITG r /. 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GEOLOGIC MAP Y w 4 Svg J` ` c s 1 *,- 6 ,\ r. a ./ A a - J T . 0 OF zq - \ F. E. TRACT 30 89i e ,, v , I w N EQUESTRIAN ESTATES, DIAMf I CND BAR 1 '%- - IIIIIf COUNTY OF LOS ANGELES f P. SY '- . rE 1Ir 1M/ 4r f Sri O , v 1' f Sy\/`., ` L• ` 1 .. - I\ \ . \ ,,, \. '' C . .. .. r Draftin b E.'1: 0. H. F K. , r Ys I ,1 ^ . *- ' ' % , • fiR e C J9 Geolo by Date: F BRUARY 17 1972 u c la'g GS Q' 64 •k xt: 6uPd * ) 7' kr1 gY Y: D. O.ASQUITH, L.R. CANN Scale: = 40 1 ,