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大阪織化石研究会隠, .輔自号.第 10 号, p.27-32, 1 伺7 年 2 月 NO眺句ーC. VoI., No.10, p.27-3之 Fe岡町 1 鈎7 D e v o n i a na n dLo werCar b o n i f e r o u sradiol町iaus 針。m 自e C h a r aOp h i o l i t eBelt, E:笛tK締法hs旬m IWATAKeiji* , OlgaT .OBUr*andM.M.BUSLOV* A b s t r a c t In 由民間町曲.eau血ors repo巾d resul包 of radiolari組 bios回tigr.叩bics加dy o ft h eChara Op h i o l i t e Belt,鎚pecially of 駒U白ernp副 of 血is b e l t .( 1 )S e v e r a lL a t eDevonianr a d i o l a r i a nsp舵ies e c h i n a t aForeman,組d As仰entactinia stella加 Cheng)n o tr e p o r t e dbyN:田直ov (1988) 組dIwa飽 et a l .( 1 9 9 4 )were (1を脚'ntac伽初 旬砂申伽reraForem組,Entac的問平加era N飽釘腕 Archocyl1ium cf.η'P;cum ob凶nedfrom 也eUru帥酷vForm雌on. (2) La飽Devo凶anradio加泊幽 weredis∞湖国伽m 也e Kar曲鶴V Forma組on. A11陶酔Ua ( 3 )Ear l yC帥oniferous r a d i o l a r i a n s( a l b a i l l e l l i d s: A l b a i l l e l l ac f .p a r a t l o x aDet1組合e 姐d s p p . )werediscover叫 for 也e f i r s tt i m efromthe渦rachar F o r m a t i o n . C h a r aOp h i o l i t eBelt, mdiolari組s, Up抑 Devo凶阻姐d Lo wercarbo凶ぬm田, ophio監蜘, Paleo・ As ianOcean Key 仰油: Introductio圃 TbeCharaO p b i o l i t eB e l ti sl o c a t e da te a s t e r n k血嘘hsωn, centra占 Asia,組d i sdi臨ibu飴datnoI曲W白t of血eL嘘eZ邸個(Fig. 1 ) .T h i sbelt,血owinga 阪回hWI側 trend,∞cupi儲 anareaof 20 ・ 30 Kmw ideand100Km long, ande x t e n d sa l o n gt h eIrtyscb 曲.ear z o n e .Thel a s t d i s l o c a t i o nbyf a u l t i n gandme飽mo甲hismof 也e 量ty配h 油伺r z onei sd a t e dt ohaveo c c u r r e dd u r i n gPermianT r i a s s i ct i m e(27仏230 Ma)(p onomarcbuke tal., 1 9 9 4 ) . Tb ec h a r aOphio恥 Be1t ωmpri郷 threetyp儲 of 臨IpeD・ tinemel姐g回祖.cluding dis鎚nember叫叩,hioli包s, v o l c a ュ 1 i r i c hb槌d同 ofprob油,Ieage 泊旬開al Ordo吋" n i cr o c k s( cian ・DeVOI溢血, h i g h p r e s s u r eme飽m倒phic r o c k sd a t e d 450-4γ7 M a(545and314Ma).槌 well 槌Ini剖le Carbon i f e r o u solistos紅omes i n c l u d i n gmanyb l o c k so fOrd o v i ュ ci姐, Siluri佃 and D evonianlimestones 組d c h e r t s (Belyaev, 1 9 8 5 ;Ermolove ta l., 1 9 8 1 ) .TbeChara Op h i o l i t eB e l ti sconsideredωbe ana c c r e t i o n a r ycomュ pl偲 formed ata 田:nch o ft h ePal郎副anOα粗 along 肱 Ki pcbakisl祖d-arc o r around 也eAl句i・Mongolian Miα似ヨ[)ntio阻.t ( S e n g o re tal. , 1 9 9 3 ;Ber泊D e tal. , 1 9 9 4 ) . So u t h e r nex刷sion of 曲eαara Op h i o l i t eBelt 田emsto be 回国d 泊to 血.e K a r a m a i l i( o rKe l a m e l l i )F:創出 Beltof thee踊tern J u n g g a rB踊in, N WChina(L ie tal. , 1 9 8 8 ; . De p a r t m e n to fEartha n dpl制御ry Scienc民白叫国民 sch∞lof Ho肱aidoU凶versity, Sapporo 師O, Japan. . . .Uni創出II In副知飽 ofG芭ology, Geop b y s i c sa n dMine釘'logy, Rus・ 単組 Academy o fScienω , Siberian B阻油, Novosib首sk,Russia. Berzin e ta l., 1994) , andf u r t h e rs o u t ht ow e s t e r n Mongo狙a, b u tn o r t h e r nonei sn o tcl,回INor曲.ern e x t e n ュ s i o ns館ms t obe 位.aced i n t ot h eSakmar ・ Mugodzhary zone,回u血ern U r a l s .Tb estru仰E渇lrelations 鑑nong 曲闘e are踊 resu1t f romef I e c toff a u 1 td i s l o c a t i o nd u r i n gt h e c c u r r e da l s ow i t h i nt h e Permian-Triassic , whicb o i l i c e o u sr o c k si nt h e o p h i o l i t eb e l tB a s a l t i crocksands Chara 句凶olite B e l ta r econsi伽叫倒扉凶lyωbe~但m剖 atoc伺n f l o o ro ft h ePa肱msianO館組 which dumtedfrom e a r l yP a l e o z o i ct ol a t eP a l e o z o i ct i m e .Agea n a l y s i so f s e d i m e n t sandv o l c a n i cr o c k sof 血e CharaOp h i o l i t eB e l t w i l lcon凶bute t oprovet h edumtionof 曲e P a l e o a s i a n O切組組d i t se v o l u t i o n . ta l .( 1 9 8 1 ) U l l t i lnowN抵arov (1 975) 組d Ermolove E噌ortedre剥tsofr叫iol制組 biω回tigr司地lyof 也.eCham o p b i o l i t eb e l t . N位arov ( 19 7 5 )mades t u d i e so f r a d i o ュ larians 命.om 也e 鍾益田ous r o c k so ft h eUrumb鵠vForma tion 姐d K ar abaev( T e r e n 't i e v )F o r m a t i o n . Fromt h e UrumbaevF o r m a t i o nhef o u n dLa t eDe v o n i a n(F:組問 nian)m(値olari組s: Enωc伽osp,加 era e c h i n a t a(l量nde), E .unima Naz釘ov, Tetractinia s p .From 也e Kara b a e v 19 7 5 )andErm o l o ve ta l .( 1 9 8 1 )r e ュ F o r m a t i o nN也arov ( portedt h ef o l l o w i n g LateDevonianr a d i o l a r i a n s ( F ammenian): A s t r o e n t a c t i n i ac f .p a u z i l l a Nazarov, Enωct初旬 cf. c o m e t e sForeman.Ermolove ta l .( 1 9 8 1 ) r e f e r e dt h ef o l l o w i n gMi制le Ordovici紐・Early Si 1 u r i a n r a d i o l a r i a n sfromt h eKamkoi臨sFormation 面白.eCham O p b i o l i t eB e l t :E n t a c t i n o s p h a e r aa f f .a ksakeuis N担arov, S y n t o y e n t a c t i n i a( 1 )p e r t a N但紅ov, Helio・ 2 7 2 8 IW ATAKeiji, O l g aT .OBUT 組d M.M.BUSLOV iJ AVa ら 'K1 Jsro 芝 同、 、も H f民 r .\f M一 1- d電 , 旦イ ah , qMBY ---A L1 町、 4 凶目 t R 、、. J JV ‘, F i g . l .G回logical mapo ft h ege叫卯町並cωD p l e x e si nt h eC h a r aO p h i o l i t eB e l t( m o d i f i e d 1 9 8 1 ) . 1 .Terrigeno凶おdiments (N開geæ-Q凶1tetnaJY), 勤molovet 札, 」旦主主J 1 日 21+i-+1 8~ 3 9 _10 2 .Pos~ωnisional gra副tω(Permian) , 3 .Volca田 n i cr o c k sa n ss e d i m e n t so ft h ezh釘ma-Saursky is1and-arc , 4 .F o r e a r ct r o u g hs e d i m e n t so f Rudny司Al凶芯I組d-arc, 5 .U n d i v i d e da c c r e t i o n ュ a r yp r i s m ;i m b r i c a t e sofC1V,-] ( L .Carb., L .M . Visean), 6 .0伸iolite ( U p .De v .F r a s n i a nbas曲 a n ds e d i m e n t so ft h eKarabaev 組d T e r e n t ' e v Formation) , 7 .T u r b i d i t e( U p p e rDevonian , F創nmenian U r u m b a e vFom温tion), 8 .O p h i o l i t e (LowerS姐町t飢・Mi剖le D e v o n i a nb a s a l t sa n d sediments) , 9. se中間自由e mel組ge, 1 0 .U n d i ュ i l u r i a nb l o c k s v i d e dM i d d l eOrdovician 司Lower S wi白血山口I翻句,hiolite Belt, 1 1 .S t r i k e s l i p fau並, 12. 百四店ts , 1 3 .Lo鎚lities of 偲dぬlari釦18; L o c .1; 71401 ,Loc. 2 ;71601 -04, L o c .3 ;7 1 7 0 2 . Gコ 405 図 6 昌 7 凹 仁コ 11 E:ヨ 12 b;ヨ 13 仁己 e n t a c t i n i a( ? )s p .From 也.ese s加dies i tbecameclear 白紙 白e t h eageofs i l i c e o u sr o c k soft h eCharaO p h i o l i t eB e l t l a r i a n s( a l b a i l l e l l i d s )wered i s c o v e r e df o rt h ef i r s ttill略 rang目的m M i d d l eOr d o v i c i a nt ' OL a t eDevonian,組dthat 的m s i l i c e o u ss e d i m e n t sa r ev e r yo f t e na c c ' O mpaniedw i t hoce・ 組ic b a s a l t s .Howeveζrecent1y I w a t ae ta l .( 19 9 4 )repω総d n o to n l yDevonianradiolari組s , b u ta l s ' OL o werCar b'On i f ュ Kar abaevF'Or m a t i o n .( 3 )E a r l yCarb'On i f e r o u sr a d i o ュ t h eV e r a c h a rF'Or m a t i ' O n . ' Og y'OftheCharaOphioliteB e l t Outline'OfGe'Ol TheCharaOphi'Ol i t eB e l tb e l o n g st ' Ot h eOb'-Zais組 er'Ousones 合om 血e C haraB e l tanddemons回飽ddep'Osi OrogenicB e l tandi ti ss u r r o u n d e dbyenorm ' O u samounts t i o nofs i l i c e'Ou ss e d i m e n t si nt h eP a l e o a s i a nOceanh a s ' O n i f e r o u st e r r i g e n o u ss e d i m e n t s( A r k a l y kF'Or m a ュ ofCarb d u r a t e du n t i lE a r l yC a r b o n i f e r o u st i m e . Belyaev( 1985) 即時 which stated 白at s i l i c e o u sr ' O c k sa r eprl吋omin佃t1yαopped o u t a r eintercala飽dbetwe叩 tw'O D evonianisl拙d arcs (Ru也y Al凶祖dZ凶rma-Saursky isl組d-紅'cs). Large h eCharaOp h i o l i t eB e l t . e s p e c i a l l yin 也esou曲.ernp紅t oft ss e d i m e n t sa r ec o n s i d e r e dt ' Ob e amountsoft e r r i g e n'Ou In 白is p aperwer e p o r tafewa d d i t i o n a lr e s u l t s'Ofr a d i o ュ t u d yoft h eCharaO p h i o l i t e Belt, l a r i a nbiosぜヨtigraphic s a c c u m u l a t e d油田 the c o l l i s i o noft h eB a l t i candS i b e r i a n C o n t i n e n t sd u r i n gmiddleC a r b o n i f e r o u s .Th i sc o l l i s i o n e r z i ne t zoneis 伺lled 白eKalba-N紅卯 Collison ZonebyB a l .( 19 9 4 ) .Th e s eC a r b o n i f e r o u st e r r i g e n o u ss e d i m e n t sa r e i n t r u d e dbyala明ge numbero fPenniangranit回. A c c o r d i n g e s p e c i a l l yofsouthemp a r t'Of 也is be I t .Wehavenotyet c ' Om pletedradi'Olari姐 bi'O甜atigr羽.phic s t u d yofsouthem CharaOphi'Ol i t eBel t, b u t'Ob飽ined t b ef o l l o w i n gnewd a t a . ( 1 )S e v e r a lL a t eDev ' O n i a nradiolarian 叩配i回 n'Otrep'O市d I w a t ae ta l .( 1994)wereo b t a i n e d ωBelyaev (1985) 血e C haraO p h i o l i t eB e l tc'Omprises 血ree byN詔ar'Ov (1988) 組d u n i t so fsぽpentinite m e l a n g e s .Th el o w e r se中entine meュ fromt h eUrumbaevF'Or m a t i'OD .( 2 )L ateDev'Oni叩 radi・ o l a r i a n swered i s c o v e r e d合om 組 equivalent f ' O r m a t i o nt ' O Op h i o l i t eB e l tandc o n s i s t sofh i g hp r e s s u r emetamo叩hic l a n g ei sd i s t r i b u t e da tt h en'Orthemp a r t'Oft h eChara Ch a r aB e l tR a d i o l a r i a n s 2 9 basalts, b l o c k so fS i l u r i a n- i l i c e o u s c l a yands i l i c e ' O u s c a r b o n a t e beddedsiliceous , s Lo werDev ' O n i a nl i m e s t ' O n e sandas m a l lamount'Ofc h e r t . Th em i d d l es e r p e n t i n emelangei sdistribl配dat 曲esou白 emp a r to ft h eCharaOphi ' O l i t eB e l tandc o n s i s t so fam幽 a 1 e u r o l i t e s(ve町 fine s a n d s t o n e s )andch剖s, with 白血 i n ュ fs a n d s t ' On el a y e tManganese'Or e s'Of t e na r e t e r c a l a t i'Ono acc'Omp岨iedwi白血血回ebeds. C'OIωJfS ' O fr o c k svary 企om v i o l e tt ' Od a r kg r e y .Th eUrumbaevF'Orm 8 J t i ' O ni sc'On s i d ュ e r e dt ' Ob edep'Osit吋'On 也e s l ' O pe'Ofp a l e ' O seam ' O u n t s . ara baevFormaJti'Onc'On s i s t s'Ofpi l 10wIav,部, L o c .2 TheK s i l i c e o u saleur'Oli臨組dcb師s. Th ec ' O l ' O u ro ft h es i l i c e o u s r o c k si sgreen-grey, grey, v i'Ol e tandr e d .T h i sf o r m a t i o ni s estima飽dt'O be 食agments o fophi'Olit儲. Loc . 3TheV e r a c h a rF'Or m a t i o nc ' O o s i s t so fb部altic ,佃d邸 ite-basaltic 紐d 祖desitic po叩hyrites, r uelyd a c i t i c'Or l i p a r i t i cpo叩hyrites, t u f f a c e ' O u ssandst'Ones , v'OIca n ic l a s ュ l a yandc Ja y s i J ic e ' O u sale町oli脳, cll,側y t i csandstones, c br,配ci部,組d t u f f a c e o u sc h e r t s .C'Ol ' O u r so fs i l i c e o u sr o c k s aregr略 grey-gr田n 組dred 泊曲is f ' Or m a t i'On .T h i sf ' O r m a ュ ' Oh aveb回n deposi飽datthe ma零inal b総in, t i'Onseemst formedin 血e n e i g h b ' O u r h ' O ' O d'Oft h ei s J a n d a r c s . rocks , metagabbros,百-rich phiboli蜘, g油br,悶, gr'鶴田chis俗, Siluri組・ Dev'O凶佃 Iime st'On田 and c h e r t s .Th eup何回rpentine mel祖ge i sd i s t r i b ュ u t e da tc e n t r a lp制'Of 也e CharaOphi'Ol i t eB e l tandc'On嶋 si蜘 of d issmemberedophioli臨 with peridoti臨, g;油bros, b槌alts a ndOev ' O n i a nl i m e s t ' O n e sandcher飽. I nt h ee v o l u ュ t i o no ft h eCharaO p h i o l i t eB e l tanda d j a c e n ti s l a n da r c s t h ef o l l o w i n gt h r e es t a g e shavebeend i s t i n g u i s h e dby R'Otarash 組d G redushenk ' O( 1975)andErmolov e ta l . ( 1981 ) . ( 1 )S u b d u c t i o nin 也.e P a l e o a s i a nOceanandf o r m a t i o no f a c c r e t i ' O n a r yp r i s mo c c u r r e dd u r i n gLa t eOev'Oni組・ C a r b o n i f e r ' O u s(羽鶴加齢 Nam町i姐). 也e C'Ol l i s i o n'Oft h eSiberian 組d 曲e B a l t i cc o n t i n e n t sh a s ' O r m a t i ' O n 'Of 白.e la培e f a u l t disl'Oc8J伽ns r e s u l t e di nt h ef dur也g Mi剖le C ar b'On i f e r o u sandE a r l yP e r m i a n . t c ' O l l i s i'On a lmagmatismandf a u l td i s l'Oc a t i'On s ( 3 ) P'Os 。) 'Oc町red in 血ePermian. Samplel o c a t i o n s C h e r ts a m p l e swerec'Ol1ec飴d fromt h esouthemChara O p h i o l i t eB e l te s p e c i a l l y between CharskViIlage 叩d s'Ou血鴎st ' O fMarin ' O vkaV d l a g e .Lo c . l(Urum baevFormaュ t i'On ;Samplenumber, 71401)i ss i t u a t e da tab ' O u t300m n'Or也伺st ' O ft h eCharDams i t e .SamplesofL o c .1 a r e m'Os t l yl i g h tbrownc ' O l ' O u r e ds t r a t i f i e dc h e r t swhichh a v ea thickn回s o fa b o u t40m 姐d 曲.ey a r eve柑cally i n c l i n e d . Th ec h e r ts a m p l eo fLo c .1w描'Obtained 合om t h em i d d l e h es t r a t i f i e dc h e r tl a y e r s .Gr e yandb l a c kc h e r t sa r e p a r t'Oft p制ly i n t e r c a l a t e d . L'Oc .2(Kar a b a e vF'Or m a t i o n ;Sample number, 71601・04) i ss回.tified r e dc h e r t'Ov e r l y i n gbasalts, l ' O c a t e da ta b o u t4Kms ' O u t h w e s t金om t h eCharDams i t e . i a n( F aJmm e n i a n1 )c ' O n'Od'On t sa r er e c ' Ov e r e d L a t eDev'On 企'Omthe舘 cherts (Kuedin'O巧 pers'Onal c ' O mmunicati'On ) . ( V e r a c h a rF o r m a t i'On;Samplenumbe r 71702)i s s i t u a t e da t 1K ms ' O u t h e a s t'OfI g o r e v k aV i l l a g e . Gr ey L∞ .3 c ' Ol o u r e dc h e r tandl i m e s t ' O n e s'OfMi d d l e-La t eDev ' O n i a n th e r e .Thea g e'Of 血is c h e r th a sbeen a g eareαopped 'Ou c'On s i d e r e dt ' Ob eMiddle-LateOevonian o rE a r l y h i sf ' O r m a t i'Oni sr e g a r d e d C a r b o n i f e r o u s( 1 )u n t i ln'Ow. T ' Oshow 佃 olistostrome. G reyc h e r t'Oft h i sf o r m a t i o nwas t ex創凶ned. L o c .1 TheUrmbaevFo rmaJti'O nc o n s i s t so fr h y t h m i c a l l y Radiolaria L i g h tbrownc o l o u r e dc h e r t s'OfL'Oc .1( S a m p l enumber ' O l'Owingr a d i'Ol a r i a n s :A陀加の附um 71401)y i e l d e dt h ef cf.ηpicum Cheng 伊1.1, Fig.l) , A r c h o c y r t i u ml a n g a b ュ r m e l i n(Pl. l , Fig.2), T e t r e n t a c t i ab a r y s p h a e r a r i e l l e iG'Ou F'Oreman(Pl.1, F i g .3) , E n t a c t i n o s p h a e r ac f .e c h i n a t a s t e l l a t aN偲arov. (Pl.1, Fig.5) , A t s t r o e n t a c t i n i aa f f .p a r o n a e(Hin d e ) i g s .6・7), E n t a c t i n o s p h a e r as p .(Pl.l, F i g .8) , (Pl.l, F E n t a c t i n i a s p .(Pl. l , F i g .9) , H e l i o e n t a c t i n i a( 1 ) p r i s m a s p i n o s a Wakamatsu e ta l .(Pl.l, F i g .10), 8JOd E n t a c t i n i av a r i o s p i n a (W ' On )(P l . 1, F i g s . 11 幽 12). Urumbaevc h e r ti n c l u d e sabandantT e t r e n t a c t i n i a baη'sphaera F 'Oreman , E n t a c t i n o s p h a e r ae c h i n a t aF'Or e ュ m組,組d A s t r o e n t a c t i n i as t e l l a t a Nazar'Ov .A r c h o ュ c y r t i u mcf. 砂picum Chengi sa 1 s ' Oc ' O mmonlyi n c l u d e d . 1 9 6 3 )r e p'Or t e dE n t a c t i n o s p h a e r ae c h i n a t a F'Oreman( 合'Om t h eUpperDev'On i a nHur ' O nmembero fOhi'O, US A . Nazar'Ov (1975)d e s c r i b e dA s t r o e n t a c t i n i as t e l l a t a Nazu 'O v, E n t a c t i n o s p h a e r ae c h i n a t aForeman, and H e l i o e n t a c t i n i asp. , whichi sv e r ys i m i l a rf ' O rmt ' OH .( 1 ) p r i s m a s p i n o s aWakamatsue ta l .f r ' Om t h eUpperDe v'Oュ n i a n'Ofs ' Ou t h e r nU r a l s .Nazar ' Ov( 1988)e s t a b l i s h e dt h e UpperDev'Oni組長trentactinia barysphaera ・ Cerato・ i k i s c u mfammenicum assemblagez'On e . Braune ta l . r c h o c y r t i u ma f f .t y p i c u m命om 曲eUp ( 19 9 2 )rep'O出d A perDev'On i a nofBreuschtal , Alsace , Germany.T h i s F'OreID8JD例 .1 , Fig.4), As加entactinia 3 0 IWAT AKeiji, O l g aT .OBUT 飢d M .M .BUSLOV 平eic回 repo配d byBraune ta l .( 19 9 2 )i sveηsimilar t o s t r o ュ o u r s . NazarovandOrmiston( 1 9 8 3 )r e p o r t e dA e n t a c t i n i as t e l l aNazarovfrom 也eUpp釘 Devonian Gogo F o r m a t i o nofWestemA u s t r a l i aE n t a c t i n i as p .showni n Pl.l・ Fig. 9 i sv e r y曲目larto 白e onerepo巾d fromt h e 19 9 0 ) . UpperDevonian D j u n g a t it e r r a n ebyA i t c h s o n( Fromabov e c i t e dradiol創価 assemblage weconclude 曲e ageof 血echertof 曲e U rumbaevForm甜on i sLa t eDevo・ 凶佃(Famm偲泊n). R edc h e r to f L o c s .3( S a m p l enumbe r . 71601 ・04) i n c l u d e sr a d i o l a r i a n sa b u n d a n t l y ;b u tmosto f n t a c t i n i as p p .a r ea b u n ュ t h e i rs k e l t o n sa r ed i s s o l v e d .E d阻tly includ叫. R edc h e r t(No .71604)i n c l u d e sas m a l l numbero fw e l l p r e s e r v e dUpperDevonianradiolarians , b u tt h e ya r enowu n d e re x a m i n a t i o n . c .3( S a m p l en u m b e r ;7 1 7 0 2 )i nt h e Greyc h e r to fLo V e r a c h a rF o r m a t i o ny i e l d e dt h ef o l l o w i n gr a d i o l a r i a n s ; Alba i 1 l e l l ac f . paradoxa D e f l a n d r e(P l .1, F i g .15) , A l b a i l l e l l a spp. 伊1.1, Figs.13・ 14) , and P o l y e n t a c t i n i a s p .( p l .1, F i g .1 6 ) . Defl組合e ( 19 5 2 )d e s c r i b e df r r s t l y A l b a i l l e l l a paradoxa fromt h eLowerC a r b o n i f e r o u s d e p o s i t swascomfirmedf o rt h ef i r s tt i m et obeE a r l y Carboniferous ロbumaisi叩・Lower V i s e a n ) .C h e r tb l o c k s of 也e 砲:rach釘 Formation a r ei n c l u d e dw i t h i nt h eLower C a r b o n i f e r o u s( V is e a n )se叩entinite melange(Ar k a l y k Form甜on). L a t eD e v o n i a nsili問。us r o c k sa r ev e r y0侮n o b s e r v e dwi也泊 theChar温Ophioli飽 Belts. Th e s es i l i c e o u s r o c k sseemt ohaveb e e nformeda tv a r i o u sgeodynamic siωations i nt h eP a l e o a s i a n0偲佃・ oce佃 floOl; s l o p eo f seamounts, ridges, andf o r e a r cb a s i no fi s l a n d a r c s .S i l i ュ c e o u s-c a r b o n a t er o c k so fO r d o v i c i a n-E a r l yC a r b o n i f ュ i g bp r e s s u r e e r o u s(Tournaisi佃) age, basalts , gabbros, h metamo叩hicrocks in 問中entinite m elangeo ft h eC h a r a I ta r eb e l i e v e dt h a tt h e yweremixedi nt h e O p h i o l i t eBe a c c r e t i o n a r yprism aroundt h eMongolia-A l t a i M i c r o c o n t i n e n t . Wespec凶a飽白紙 marginal s e al i k et h e p r e s e n tP h i l l i p p i n eSea e x i s t e dbetween t h ee n s i a l i c a iisland-arc 姐d 也e p r o b a b l ee n s i a l i cisl組d Rudny-Alt a r Clike 白e p r e s e n tMari anas e aduringEarlyCarbonifュ e r o u sa g e .But 曲is mustb ep r o v e dbyf i n d i n go fa r cv o l c a ュ n s i a l i cisland-arc , e l s e w h e r e n i crocks, whichsugg儲t e σbumaisian ・ L. Vis倒的 of Monta-Noire, s o u t h e mFran偲. w i t h i nt h eC h a r aO p h i o l i t eB e l t .P r e s e n c eo fL a t eDevoュ 凶組 ophiolites a ndE a r l yC a r b o n i f e r o u si s l a n d a r c sw i t h 匤 o m p l e t i o no fs u b d u c t i o n t h eCharaB e l tsuggests 白紙白e c Al t a iMicrocon血ent 姐d 也e ∞m a r o u n dt h eM o n g o l i a nmencemento fcoI l is i o no ft h eRudny-Alt剖 and t h e Zharma ・ Saursky i s l a n d a r c st o o kp l a c ed u r i n gendo f o c k sb e a r i n gm組.ga E a r l yC a r b o n i f e r o u sa g e .Sili回ous r ne回 ores ( U rumbaevF o r m a t i o n )a r ea l s oo b s e r v e din 曲e KurkurdukandM a l i s h i ncomplexeso ft h eMugozhary 9 91 ) .T hesem姐ga Zoneo fSouthemU r a l s(Zaikova, 1 n e s eo r e sseemt oh a v ebeenformedbys i m i l a r hydro耐 t h e r m a la c t i v i t i e si nt h eP a l e o a s i a nO c e a n .E a r l yC a r b o n ュ o l c a n i c i f e r o u ss i l i c e o u sr o c k sa s s o c i a t e dwi由 island-arc v r o c k sa si nt h eV e r a c h a rF o r m a t i o na r ea l s of o u n di nt h e Ma g n i t i g o r s kZoneo fU r a l s( S e eZon e n s h a i ne tal. , 1 9 9 0 ) . H o l d s w o r t handJ o n e s( 1 9 8 0 )p r o p o s e dA l b a i l l e l l a1 3 a s s e m b l a g ez o n e si nt h eUppermostDevonian・ Lower C a r b o n i f e r o u s . Nazarov( 19 8 8 )proposedtwoLower l b a i l l eI l a C a r b o n i f e r o u sr a d i o l a r i a nzones ・ lower A paradoxa 岨d u p p e rA l b a i l l e l l ac a t t a l l aZOD儲. A c c o r d i n g i m A l b a i l l e l l ap a r a d o x azoneiodica蜘 approxim蹴Iy t oh To町naisian s t a g eo fLowerC a r b o n i f e r o u s .Wangand Kuang( 19 9 3 )a l s oreporぉd 血is species 仕om t h eLo wer C a r b o n i f e r o u sc h e r to fsou曲eastem Guangxi, China 組d t h e yr e g a r d e dt h e A l b a i l l e l l ap a r a d o x aa s s e m b l a g ez o n e t oi n d i c a t et h eLowerCarboniferous ぐfoumaisian s t a g e ) . Therefore 出.eageof 白iscb側 ofLoc.3 i sc o n s i d e r e dt ob e Ear l i e s tC a r b o n i f e r o u s( a p p r o x i m a t e l y T o u m a i s i a n) . Ra d i o l a r i a n sa r eobtaioed 金om o t h e rl o c a l i t i e so fs o u t h ュ u to u rs t u d yi sn o tcomple包dyeιAbout emCharaBelt, b themwew i l lr e p o r tin 祖0血er o p p o r t u n i t ) { Discussion weo b t a i n e d newd a t aa b o u tr a d i o ュ l a r i a nf a u n aandageo ft h eUpperDevonianUrumbaev Formation 組d K ara b a e vForm甜on. Th ef o r m e rforma且on i sc o n s i d e r e dt ohavedeposi総d a ts l o p e so fp a l e o s e a ュ m o u n t s .Th el a t t e ri sc o n s i d e r e dt oh a v eb e e nf r a g m e n t so f o p h i o l i t es e q u e n c e sin 由e a c c r e t i o n a r yp r i s m .Th ea g eo f t h eV e r a c h a rF o r m a t i o nwhichb e l o n g e dt om r u g i n a ls e a From 血is s旬dy Acknowledgements r o f s .N .L .Dobretsov 祖dE. Wea p p r e c i a t ev e r ymuchP A .Y o l k i no fUIGGM, RAS , N o v o s i b i r s kf o rencourage・ m e n t sof 曲is s t u d y .Wea l s oe x p r e s s0町 gratitudesω 針。f. 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Ru.副却 Geology a n dGe o p h y s - 3 2 IWATAK e i j i .OIgaT.OBl I TandM.M.BUSLQV Plate1 f . rypicumCheng;LQc.1(No.7 1401 ), I125, 2: ArclJocy,剣山 1 langabri el l e iG刷 rmelill ; 凶c. 1{No.7 140 I), ll 1 2 5 .3 1:Ar曲OCy"ωm c Tet r c n t aCl ホ n i a bary s phaer aF oreman;L o c.1(No.7 1401 ) , ) (\66. 4 晶 rJcfinosphaera c f .e c h i n a r a Foreman 凶c. 1(No.7 1401 ), x1 2 5.S A Slr明ntac/inia s t e l l at aNa z a r ov ;L o c.I( N o.7 1 咽 l ) , x I 25 , 6: A s付加nta('linia aff , paronae (Hinde) : Lo c .1 例。 7 1 401 ) , I1 2 5. 7 As t r o e n l a c t ホ 1 lホ aa f f . p.岬nae ( H i nd e ) ;L o c .1 刷0.7 140 1) , x125, 8 : Entactinc関川 aera s p. ;L o c.I(N o.7 140 1), X125, 9 : Entact山a s p.:L o c 1(No.7 1401 ), x1 曲山崎I悶~mllctinia 刊 岡田 laspinosa Wakamal Sue Ta . l:L o c.1( No . 71 4 0 1) .x¥ 6 6.11 白 tactuua VJn側p刷 ( W加} L o c.1(No.7 1401 ), x125 . 日 En ractinω"'"明'piJ1iJ ( Won) : l訓 1 ( No.7 1 叫 1 ) , x1 6 6 .1 3 :Albai / k/ 1 as p. :L四 3 例。 7 1 702 ) 足 12 5. 1 4 Albale J J as p .;Lω3 (No .71 7 0 2) . x1 6 6 .1 5: Albai / l el l ac f .par;珂o.u Defl 削dre ; L oc. 3(No . 1 1 702 ) 川面。 16:PolyentaclÎnia 叩 loc.3 ( No. 7 1 7 02) 克 12 5