geologi bayat 2013

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8/10/2019 geologi bayat 2013 http://slidepdf.com/reader/full/geologi-bayat-2013 1/91 Oleh: Kuliah Lapangan 2, Bayat 11 – 26 Aug 2014 Dr. Hil. Gendoet Hartono

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Page 1: geologi bayat 2013

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Oleh:

Kuliah Lapangan 2, Bayat 11 – 26 Aug 2014

Dr. Hil.

Gendoet Hartono

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What I hear, I forgetWhatWhat

II

see, I remembero, I un erstan

What I see, I forgetWhat I hear and see, I remembera little

What I hear, see and ask quistionsabout or discuss with someone else, I

begin understand What I hear, see,discuss and do, I acquireknowledge and skill

What I tea!h to another, I master

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P E N D A H U U A N

!ondisi geologi "a#at#ang kom$leksdan lengka$ unsur%unsur

$embentukn#a&Di antara $ara ahli masih ter'adi$erbedaan $enda$atterhada$ genesis Perbukitan

(iwo Daerah "a#at dekat dgn )og#akarta dan singka$angeologin#a mudah dica$ai

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*A!+UD -U(UAN

*emberikan gambaran kondisigeologi daerah "a#at secarakom$rehensif berdasarkan hasil$enelitian $ara ahli kebumiansebelumn#a

*emahami geologi regionaldaerah "a#at dan sekitarn#asebelum melakukan$enelitian la$angan

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o k a s

i ! u

l i a h a $ a n g a

n

.

G. MERAPI SURAKART.

10km

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Rumah

Bpk Edi Rohmanto

Kampus Geologi Ba at

Ba"osurtanal,2002

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KO!SEKUE!S" #OG"S DAR" KO!$ERGE!S" KERAK SA%UDERADA! KERAK BE!UA D" "!DO!ES"A

TERBENTUKPALUNG YANGDALAM

TERBENTUKJAJARANGUNUNG API

LOKASIEPICENTER GEMPA

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sedimentaryrocks form

weathering&erosion sedimentary

rocks form

igneous-4'_~~~~. rocks form

metamorphism

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Kalimanta

8° U

o -+;00 Km

1 1eterangan! Katili, 1#$%

".##$%!#i

&a'ur (u)duksi aktif &a'ur su)duksi *ersier D &a'ur su)duks' apur

+ + Gunung ap' akt'f , -usur magma *ersier , -usur magma apur

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if

#

I /'A AU(*RA IAP A*E

2hristm#s Is'#nd

A(*3E /(P3ERE

~> [ ~

EGE ,

AR2 *RE 23 GAP 4/ 2A / I P U*/ I2 AR2

(outh &i5# Ridge -i'i *rough

+ + .. .. .. .. .. 6 6

• • +I 2 I E, -E I/77 8/ E

MAGMA GE ERA*E, A-/4E -E I/77 8/ E

#2eno9oic sediments

:oung 5o'canic rocksot a

*erti#ry 5o'canic rocksof 2hnstmis Is'ind

# ,e10r'Md *erti#ry rock.s

< .....

*ertiiry gr;anitic )uementrocks of &i5#

*ectonic comp'e= oncontinent ..1 crust

> /ceanic crust

Katili,1#$%

{~\j~...;. :_~~~~~~~~~

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$

. Ba ah

. _ # , ? '" ,1"#!anggulan

(i}.•.

&hristmas "sland Roo Rise

'igure ( ) A *om+ined +ath metri* and topographi* map o, the studarea- sho ing ke lo*ations re,erred to in the te/t.

&eubert an &ulistianingsih,200'

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u+LAUTJAWA 6'

/...... $$$$$iiiiiiiiii'../. / m

$

s% eterangan! S'

c:::J Gunung api uarter

> -atuan gunung api )erumur Miosen Akhir P'iosen? 8ona -ogor

> -atuan gunung api )erumur Eosen Akhir Miosen Awa'? Andesit *ua

9" c:::J -usur magma )erumur Miosen Akhir P'iosen

c:::J -usur magma )erumur Eosen Akhir Miosen Awa' SMIUDEHA DINDIA@ .B Umur Ar da'am Cuta tahun..?....>... (um)u )usur gunung api

06' 10" lOS' 109" 110" Ill' 112' 11 ' 114'

&oeria(Atma )a, ""*, 1##4

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11

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..... .12#010 1#$%0• 1#00 101 #0.1 #0102000"m&"

1 E E

of ( ) &a5a.*he map a'so *l " s

&myth, et al *,200'

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ones

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P a ' eogene?eogene andDu a t e r na r y5o'canic rocks insimi'ar a r ea

s ugge s t t hepresence o f(UPER IMP /( E ,4 / 2 A I ( M(

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Super imposed 6ol*anisms in the Southern%ts. 7og akarta 8 &entral 9a6a

U%UR 4%a5 BATUA! #OKAS"

;.<) =.(4%iosenTengah5

,iorit dioritmikro

(utoCayan < Penggingan? -ayatF(urono dkk? @00 H

>)(? 4%iosenA al5

7. (emi'ir < 7.g'anggeran

Gawir utara -aturagung F(myth?@00 H

( )(@.4%iosen A al5

-asa't?andesit

a'inampu *ega'reCo? 7. e)o-utak? Parangtritis F(oeria

AtmadCa dkk.?1JJB; (myth?@00 H

;?);>-< 4Eosen

Tengah)Oligosen A al5

,ia)as? ga)ro

mikro? )asa't

G. Pendu' -ayat F(oeria

AtmadCa dkk.? 1JJB; (uronodkk.? @00 H@-; ) <-@43aleosen5

a5a )asa' <andesit )asa'

K. !galang 4Hartono- (???5 Catuadeg 4!gkoimani- (?? 5

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2ingkasan Sekalipun masih diperlukan6eri,ikasi umur radiometri-di akini telah ter adi +e+erapakali perioda magmatisme 86olkanisme di 3er+ukitan 9i o 3egunungan Selatan

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isiografi -egional .ulau /a a, &-

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u /#KKKK$KK#iiiiiiiii.i/;' 0;0; ;0m

114 0

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I cenM'f(

cat)onIto rocks

.GJ:HI((.m.3) c<C - I. Modem5o'c'in'c 0 S> I =/ = )lc 9= --. F(ul) $13I 31l=%

&myth, et al *, 200'

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.... Merapi

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.... A*l*

Geo'ogi umum

+ (edimen uarter S ##.IU

I Iintrusi uarter AMU /:,;-:- .... 1. . > .#

I I 'astika gunung api uarter HIND/A' ?I(edimen *ersier '1

> Intrusi *ersier # okasi pentarikhan umur /UH

I I 'astika gunung ap' *ersier .... Gunung api uarter Gunung api *ersier :1 okasi pene'itianMetamorf pro *ersier B0 m

< ..... Kompilasi ari berbagai sumber alam 5artono,20107

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{~\jz:....::...._..:....=...._~........:.:..::~::!!,; ~~~~~~~

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&urono, ""*, 1##2

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A

Indian /cean110% 0%(

+ (em)'P'tu 7ormat&onFM'dde ??$?oceneHUpper Miocene to present day 5o'canic > and sedimentary rooks g'anggran 7orma)on F ower M'ocfiIeH

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5all, et al *, 200$

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Kolom stratigrafi aerah Bayat 9 .egunungan &elatanS()> $1929% S.,OIO $1992% &.....II%$$1992% .......II 01. $1992% (>( II 01.$1994% N(6lO.D. $21%10%

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+ -asa' c:+3~+m m.) 3)>m

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,(3= ) 3 *)> 3>)Jll=(3)7 lc(mc l*)>*c

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+kis mika,

P d

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Padasan

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"atugam$ing Nummulites,

Watu$rahu

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Watu$rahu

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#a6a +antal +asal autoklastika Dsn. Gam+iro- Ds. Gn. Ga ah- Ke*. Ba at

&ontoh setangan +asal

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S,erulit4devitrified glass 5

Gelas ) o+sidian3or,iro a,anitiksangat halus

Kristal plagioklassedang tum+uh

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Auto!lasti! pillo la:a flo s, ;* &epi"ul, /arum, &WBayat

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.illo la:a flo s, Kalinampu,

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.etrografi tuf hitam,

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Aliran la6a +asal Tegalre o menumpang di atas tu, +erlapis

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.erselingan Batupasir tuf, rembono,Bayat

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Batugamping, Wonosari,

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