Conodont stratigraphy of the Uppermost Devonian and Lower Carboniferous rocks m the Racławka and Szklarka valleys west of Cracow

Vol. 29, No. "

ALEKSANDRA GROMCZAKlEWlcz..LOMNICKA

aela geologlea polonica

Warszawa 1979

Conodont stratigraphy of the Uppermost Devonian and Lower ' Carboniferous rocks m the Raclawka

and Szklarka valleys west of Cracow

AJlSrRACT: 'In the UppermOst Devonian and Lower Carboniferous Limestones in !be Ra<!Ia- wka and -SZkIarIai.'Yalloy. _ t of Cracow tbe following conodOl1t zones were found: Middlc

Of UpPer costoJW.ZoDe,.l'rotogltlll_ kocJuli-SiphoJrodelJa ·lUk4/a Zone, Sip/tono<k1Jo.PM~

JId'ygtIiJIlw.J:/tilIngilju.r /JratqritlJb Zone, SIp/tonodeI~Pseudopolyp41Iw.J lriang.u.s trilmlf.u.s

z.oj>e.

Sip1ronodelID cre1lUldla Zone. PolnrrlllIw.J co""'"""" carinllos Zone. GnoJ_ semiglaber Zoo', Cavfl387UllIuloJ..Apatotpr4tIw.J Zoo •.

INTRODUCTION

TI).is

is· a

· pr~~

reJ)9rt. A detailed paper on the conodont stratigraphy of the Lower Carboniferous: west of Cracow will follow.

The Lower Carboniferous deposits developed as Carboniferous, Limestone occur some 25 km west of Cracow oYer an area of e.bout 20 km

^2•

They are unconformably overlain by the' Jurassic depOsits

in

the east, arid by

'

Tiiasslc deposits in the west.

Outcrops are mainly in the valleys of the Szklarka, Raclawka, Eliasz6wka.

arid Czernka streanls{Fig. I). In th~ middle ofttie area', at Thibnik, there

o;,cur

Devonian rocks, developed in a

simila~' racies:

There are

sever,J

papers on the stratigraphy of

'

the Carboniferous Limestone west of Ctecciw (Alexandrowic2:

&

Mamet 1973, Alexandrowid

&

Siedlecka i964,

JaroszI909a,b:i913; 1914,1917, 1918, 1926, 1928, Limanowski 1903, Liszkal962, Rutkow~id 1926, 1928, Sobon-Podg6rska 1972, 1975. Zaj~czkowski 1964, 1968, 1975,

4r~<;ZIly

1890, 18!!4). That

!Il0~t

detailed is by Je.\osz (1926).

Hedis~g1,Iished

six successive lithoofratigraphic

'units correlated mainly on brachiopods,with western

Euro!"'. When we compare the

stra~gno.phy w,:cO!llPlli.q.~., by

Jarosz, with

that

b.:s,d on conodonts, it appears that almost all brachiop<X!s age indiCations concer-

. . ; . ~ '. ;', I. ' ~ .~'. .. '. . '

ning the described outcrops in Szk:larka and Raclawka

2.re .in~OITect.,

This may

400 A. GROMCZAK.lII:W\tCZ-l.OMN:lCKA

B

Fi&.l

A - <leneraI map of Poland (arrowed is tbe area presented in

Pis.

lA); B-sketch map

or

the Szldarka and Raclawka val1eys

Members in circles indicatiDg utocropo are described in tbo

teXt '

be due to very poor preservation of brachiopods occurring in the rocks under dis- cussion.

'Ibis work has been completed under ,th. Project

"Geodynamics or

Poland", '!be author is most srateful to Dr. G1tsiorOWBld Cor'hia ""atan<;e in the Cield work.

DISTRIBUTION AND AGE OF CONODONT ASSEMBLAGES

The

condont aSsemblai!es dealt with here are fairly rich and allow precise dating.

Location and age are resumed in Fig. 1 and 2.

The following profiles, were studied

:

(1) The outctop opposite Rokicz8nY Ravine (RokiC7lUlY 061) on the E slope of the Raclawka Valley, about 750 m SE from the end of the Stradlina ravine. The Carboniferous Limestone is Qutcropped from the stream bed

tp

the top of the hill.

These

are

brown limestones, somewhat bituminous, mkri~ iD the ~ part of the profile

alumalina

^with ~ ~nes,

non bituminous,

0Cb0rwise similar.

'!be Collowing cooodonla have been Cound Ibecc:

AJ • ....a.". MriIIIu ,...,., BruIoa.. ... Mehl A.

d.

^eh - . . . . tlQpJmDmce

CONODON'T ""ftlfATlGRAPIfY

A~~ap .

.",.,,1ttNIIa ^~ tJIdIIflII,. (;IJra..oR & MehI)

_t_ ...

_~_&"'""')

"... ' ok.,.,.

^{(BnDIoa & MobI)}

-- ^....

--"'-

Plllt:OdJII

robe".,

^Druoe

F~ tortw HwSdIo RibbGnl.llG (HIIJbor*u.) 11).

I J o _ ....

0 _ _ ....

Pat":cltiildtla ~RhocB;"AuI\in &-Droco

~~r:.nocs.. AultiDA Dnxe

~hJl6dMtu.e.iatw-"~

~Iw" uptIIUW RhodcI. AUltm

a

^DriIce

~/),"'lItlIIIU IP.

SJ!s;'. • ^t ,~..,. (BraII.oa " MebI) Sw' ,

_rp.

491

BUpathotl ... acu1eat ... p1tmrM1utt &PI>Ol\1"S in

the

upper

P&r:I

of.

the

LoWOf

"""lalUl

Zone, ... d ,.".,. upwards into th. lOP of ~l1a .ukata

Zone.

This .peeios

oc;iims loi\Oihar

wi\h,

the I..mrer

c.rboniferous oaes; i.e. Patro_hIu varlDbllt., p'lIeudo",I}I/l1IQIiuu _ .... Spati.Ojltiltltt/du'

~I"'. The coinc:ideaoo of i~ .pecies aUoM an ... et

datiIia

of this asiemb!JiF as Pi<>- w,~ k~/I("Itkt.ta .Zoue.

(2) 2iLm6Wcmn:y Ravine (t.un6wczany

D6I).

the outcrop on the W

slope

of the Raclawka Valley some 60 m S from the end of the Stradlina Ravine. The Carbo.

niferous Limestone is outcropped

in a

small ravin. e and N

·

of it; from the

.

stream bottom to the top of the hill.

Fill. 2

Sbtch map indic:o,tioa ... of

. • 'Cxpooores

I. ~v.ean, 2 ~ :Upper TOUmai- s'!aA, } - ~ TOUl"D!I.iaian, ~ ~ Lower ToiJrnluBian, ^{j -} Upper-

most Fammmian

•

,--- - - - ,

1iiiI'

.' •• ^{1IlIIIl' a·}

' .

••

RACtAWICE

.'

^.

^{tARY .}

DUBIE

(

SZKLARY

t/f1!P 7 •

50'-'

tkm

i92. A. CiBOMCZAKlEWlICZ..:fDMRICKA

. n -

are mainly micri& limestones. 1Iff'Y. locally ydIowisb. beoominll pdnaIly liahlec upwardo

with oooocIonll: .

SI' j , .... ...,..,..,. (Il.hodeI. Austla. 4. Drucc)

_0 ' ...

^{(IIra.oa .t: Mob.I)}

.mf t%sp.

~ " " ... _ _ _

...

... .tIkuoo

lS~1Du NW.,.,. BdmI

SpgthOf~ .p.

This is an assemblqo of tho uppermost Famonman (to V£), Middle or Upper """tat ... Zone.

In tho lowormost part of the profile thoro oocur. lIi.rpiztlll:Xkis

acukaillll

j;hunalus; in tho mlddle part, lIispatlrodu8 aculeatlU plumaIU!/ and Ps.udopolypathllll "fOg.s!; in the upperlnost part

PSc,aphi6'

1IIIIhIIII .. ll/er •. The middle part of tho profile may coaespood to the Lower Pilton Beds of North Devon. wbere oocur tosother lIispatlrodu8

QC.teat",

pluma1118 and Paeudopolyg7UJIhIIII V08u!, whilo other forms are absent. Aa:ording to Austin & .1. (1970), this assembl . . . is y o _ than

io

VI as indi<:amd by tho abseooo of Palmato!epb aod Icriodu, bot older than the ProtOfNllItDd .. k«k./I.

Sfp/Jotro<klla

ndcata :zone,

as iDdiciated by.

the

.bOenoe of tho 1 . -

Carb<ii>iferous"""L

The

raosO

of ~ W!/ifonu wbicl1'\s presem in the uppermOst part of tho profile of

:l:am6W.

""",y .Ra ... is dilinot fromlhlit of ~"'" ,..Uf ... ·Sandbeq

&.

Klappo< ( 1 9 6 7 ) _ l~ W!/ifenII from .~

COIt!mwood

Canyon Member of tho MadisOO Umcotone in Wyoming which they comiderod to be of post 1 . -ctNtoba Zooe, possibly uppermost DevouiaD .... 0 1 _ & KIappo< (1967) ckscn"bed ~hIIII ",Iif.,.,,,, from tho Canniq lIoain of Western Australia, oc:cwriDg.1I>IOthcr with lIi.rpatlrodu8acVhotu.r.

nioy

dated this aiocmbl ...

as pi"ohably co.tahu Zone. In· tho· lIRa doslt with bore sca,lrigJllllhIIII

""/if.,....

^besides

.:I:arnlrw.

cmny Ravine. occurs quite near

ut

^tho

SttadliDa.ravine

IotIetherwithllispatlrodu8

co""/,,

^(iqnaon),

thus indicating the Middle or Uppo< C08/"'u.r Zone.

(3)

The outcrop between tam6wczany Ravine and G6recki Quarry (t.om 06·

reckiego), about 3<iO m from . tam6wczany Ravine in the

W

slope of the Raclawka Valley.

They are dark beige micritic limestooos.

The following oooocIonII ha .. beon.~:

Pr.,.' I ~ ~ (IIrIr-. I; Milbl) [ " lIP.

~...,..,..,... Jthocb.. Alatia I: Droce

8, ,

^{t 7 do df#tJIIo*} (BrUIIIOD I; MeIlI)

s,'

,

SPlp.

The . . . of.this ...

bJa80

is Gtrttmdor/ki Stqo, probably c:om:opondins to tho SIp/Imtodella- PI.udopolyg7UJIhllll iIJaeq_ Zone of Germany.

SipitolfiHZlIa

cr.

dMp/k:tJttJ is restricted to SlpitolfiHZlJa..PRudopol)'811111h1111 trialrttut..

_qual"

and ~PMMIopolyg7UJIhllll trIiJIf8u1 .. trtmwu/MIzones of the

LOwer

Toumaisian of Gee·

III8DY (Vosos 1959, 1960). The aboOn.,. in our ..."blqo of the specie. ClydogMtluu CllVu.Iformll Rhodes, Austin & Drua:, which abo1D1d1l in tho projl!e

<n,

COhespo.nJing to the Slplto1ro<I.lJa..

-PIeudopo/yg7UJlhllll

trtmwu/MI

trialrttut.. Zone,

_11 ^a

SIpIumodeIb-J'lIeudopoIY811111h1111 trlturgu/lu fnaeqllQlio ...

(#) Roemer

Quarry (t.om

Roemera), in the

E

slope of the Rablawka Valley,

between

the

villages

Pacz6ltowice and Raciawice, about

60

m from the Raclawka

siream. The Lower Carboniferous is

deveIo~

as dark marIy limestones with

cherts,

becoming

yellowish in the uppe.tmost

part

of the profile.

CQNQDONT·,· STRAJl'IGBAPBY

The following, spocios bal/ll"been./ou~c! .I\iete.l

A/MIOPIlftIUu .p.

/JlqGt1tDtllu ntlbl& (Br...,n I:: Mehl) GIl(UItodru dl!licatll8 Bramon A: Mehl GootIoodu .... _ (Coopw) GIIcrtiodu ... ,.,.,. Bi8choff GrlatlrotllD HmlrIDMr m.cbolf

GtttRIIotJIII rimp/kDlw RhodII, Austin A Droce H~lhlIlP.

l'olyptJthaJ commIIIIl.J ClIl''''1IIJ Haa

Polypatlau cOI'Ilmud, ~ BrauoD. A; Mchl 8""'1" ...

S]IIIIthopofItodIU dla:rwlw Austin A Husrl

T))i,s. ~ .. Ii)e Gnat1wdussemig/Dber

Zone

of the Upper Toumaisl!ln.

ransin&

from uppermost TnJa

to· ^ihe

^toP.

7lI3Q .

. :rhe presence Of.

G1IIJI1wdus JDniglaber ispa~d)' silP'i .... nt:.in Belgium GtrathlJdus _le gltJ,;,,;

ai>l'ears

in the uppermost part of Tn3a

and Continue.

ⁱⁿ

rub (Groesm

1971). The

boils

frooMhe,'Roemor Quamomay. be .corroIated witb.

the

Avon Gorsebo!ki!!.(Jreat ~tai!t ~ to

Z",

where Grrat1wdus semig/aber appca,r.

(lU!odes"

al. 1969). A .imj!ar con""""t

asscml>.

was found in the Cork Bed. of SW Ireiand (14) b)' lifattewS & NaYlor '(1913).

who

^cOmpared it to !be North American Grrotltodua semig/QiH!r-Polygnathus <;o1nllllllli,J. c:ar(Ipu

Zo"",

(5) Klippes on the ancient frontier of the town of Cracow

(S~ ~

G,ranicY).

The Carboniferous Limestone is outcropped in the E slope of the Raclawka Valley beginning about 60 m N of the road leading from the Rac.awka stream"to t1ieRIIIl- mer Quarry.

These are dark ·beige, miaitic limestone with conodonts:

Ri 1 ' otltu ,Utbtlu (Branson I; MehI)

~.p.

HIttdtuNlt!IItJ .p.

Po/nIItJtIuM COIMUIIII6 eonutUIII/, Branaon A Mehl

~~i""""'1;::,""""

-- ....

tin A Droco PolyptItIuli .op.~ .

POlyp"tW ZM."otftn, 8pU(ht Sip/IoIIotkIlIJ~atQ.(eoOpor) SJplioflotku..uo.1lcIIq (C~);

This is the Sq,honodella...,."ZOOO • .

corresponw....

~ Cull~ of

Germany iVoses

19$9).

(6Hl1,1l11'ry above Kozub'. Mill (OQsloni;cie Nad

Mlyn~ l(OZl,lba) ..

in the E slope of the Raclawka Valley.

These are micritic limestones, 'locally'orpnodctritical, are)', yellowish tp.'C)'; or dark' with followins conodonts:

CI)ftlt;crw_ lIP.

PoI~ btom:tw IIronIaI:w BnIDon A Mebl Ozorlcodbta ap~ . .

s~ miaukJl. (cOOper)

S~/ksI_(COOi>w}

·This is the Sq,hollOlklla crelUliaJa Zone,

c:orreapon.Jins

to ClIlla "'Germany

Noses

19S9),

A. GItOIICZAKlItWa:CZ.;u)IINlCKA

(7)

Limestones above trout hatchery (Wapienie Nad Pstruamill>, in th, e W slope of the Szklarka Valley, those limestones are discontinuosly outcropped.

Tboee are dark, bejae, micritic Ijnwt._ . . with CODOdoots:

AJIGlOPIIttI_ .p.

BbpatitDdtll .IlIbIIII ~ & MtbJ)

C"..."., . . ~fIl'IfW R.h.DMI. AoItill & D~

Lal'lc^b f' IP.

't ' ^{1 "} ~ JCIappet

s,.."....,.,..

ctVl'"

YOCIQ8IIaiIt & ·Ml ...

s",'~~.

The conOOonl. from the profile

(n

anow to assign it to the upper 'part of the Galtendmjia S ...

corresl'OOlliDi: to Slpho1llNleIlf>oP .. udopol""",,1uu trilm[{utu. tT/lmgutu. Zone of Germany. Two

of'

the species

a:,., pirilcwC1Ysisn

^ifinIDt to< c:ixrclalioa. Those ate sipho1llNleUa ~ and C/ydoJ[MJIuu CfI'IIU/ormU. Slpho1llNleUa MIlwlberZ; io ,OSbic:lecl to Slpho1llNle/kj.P..udopoI""""Iut, If'langulU8 trimrgulus Zone of the

r.o-

,oumaisian of Oe!:many, andClydopathlU «mu/ormh was not found outsid.. the oo<aI K Zone ofOn>atBritahi (Rhodes &: a!. 1969, Austin &: H1111973).

(8)

QUarry near the main road (Wapienie

Przy 'Gl6wnej Drodze),

in the W slope of the SzkIarka Valley about 1

km NE of the profile (7).

Those ... micritic

li_

^{black to} dark brown with c o _ l I : A]Muo61111t'-dtfJalIotJlu Vatkat

ApotopvJtltw,.mlInu (Hi.) ApDtoJlliIIIt;ru ,.". .. VU"ker Aa ' r 't . . . Varkw A~"'IP. ·

~ ... dwMdw:a-ro.d.

em...,

w''''''1kaIIIoD 4. M.bI

~ ... _(HloM)

HlIIdtttJtMJ"'ap..

polypw.tltw bUc::ioftl RbodeI A..a:io.

a

^DruoI s".,], 111'-", crimIbtIy~ &·MiJIIr

$pd1'. ' t . . . . (IliDde)

~,.,. ... BrIlftlOfl A. Mchl

Tiu> present assemblqe of conOOont. io very similar to the assembl ... C4v1U/fnD/hus-ApatotpIIJI- hur Zone from·the Britiah

Avonion,

exce~ the _ _ of Pol""""h .. blschoffi known

from

the _ older Laminosa Dolomite. The C4v_,hus-ApatOlf1l/lthu. Zone ... from the upper part of C, to the _ of D, (AustiD 1973). The _ _ of Pol""",,1uu -bilChoffi milbl'

suaest

thet the prooent assemb1aale _ 1 1 the I~ part of the C4'11U/f111dhus-Apatoplllluu Zone, correspondinl! to C ... , correlated by GroeoIlODS (1974) with Y,a.

(9) Steep kliwe over the stream (Stroma Skaika Nad Potokiem), in the B slope of the Szklarka Valley far from the road.

Those are micritic limestones black. to brown with conodoots:

ApGtofpftllhlu pmttfW (Diode) Apato .... tltw IIbteta Varbr

LIa t's IP-

Those fonns have a wide """" in the Vio6an. However, in tbe profile (8),situall>cl ~ulIe near tbe<e occur at the base some beds IithnloP:ally very similar, containiDs the."""" ~nt spoi:ies.

Tiu>refore, it ma,y be supposed the present assemb1aale is coeval, i.e. r~ts the lower part of the C4vuiglllllh ... ApatotpllJlhM8

Zone.

CONODo~ ,lITRATlclJsAJoHy

(10) Quarry

at the frontier (Lam Przy Granicy) where dark shales , and

lime'Sto-

nes are exposed in the E elope of the Szklarka VaUey, about 200 m from the

pro- file (11).

on- ....

^dark

,-.y

liQloolot* with bl..t che<ts, Uld thin in_lion of dark ohaIei with amodonts:

-

^{'Is . . . .}

^....

.I'slI!b ' ~"""'1IuI

. .lttt t ... ~ . . . . ~MeIII N..,' ; , sp.

SJwJ»i..

^',~..,., (IInIIIOIIA: MOl)

SJotiLautr.o ill .. d. aImIhu YCJGll8ll8l1t a: MIUet

' . . . . c t '.p.

0_ ....

This is the Po/nrIJItIfMI _ _ Zoae,

':rit3a.

AUltia 01; al. (19'10) fOllDd • aimiIar Ul<lllbla .. of COIlOdoats in Yvoir,

.iIoIJium

(Unit 10).

(11) Slope over the stream opposite the houses (Zboc:Z&oIiIad Potokiem Naprze- ciw

Domow)

in the E slope of the SzklarkA Valley.

n.- ....

micrilic _

Cl<JIIIIOCIoIritical

^Iin ! ."'", broom ,nMIuaI1)

Il"OYiuI

upwardI,lODC:l'OIIy _ dart with COIlOdoaIs:

" . . •• 0+" . , . , . (BtaIIIOD. .. MciII) , ' • • riu crl6ft1lK1 y~

a:

^alI..lIw

,,",,' , " . . . (c:'.oc:Ip.)

PolUIt .4cademy of Science.

I",tUIII. of Go%6iClll Sckru:a s-:ka 3, 31-<102

_w,

Pokmd

ALBXANDROWICZ S. -& YAMEl' B. 1.. 1973. Microfaciol du CarboDif.... loferiour lIu

nom.

^{do ~} (l'oIOIIJO 'MericIiooaIe). Rnllt" &pano/tJ de M/at1ptll«RIto/ogltJ, 447~

Madrid. :,, ' " : " """ ' . ' " "

& SlEDLECKA A. 1964. Litbolosical pro/Ue of Dinanlian llmosIones at

ez..ma ""'"

Krzc..

a:wwice. 'MMI. Soc.

GooI.;'

Pol., 34 (3), 395--423. Kno.k6w.

AUSTIN R. 1.. 1973.

Modi1icatiOn or

^the

^Bridab.

Avonian conoclont ZODaIion and a r~

of European c:onodont :waation _ correlatlon. Annal. Soc. Gool. de Bo/aiqllo, !Hi (3), S23- 432. l.iqje.

, DRUCB

It

c., 'RHODPS P. lL & WILUAMS 1. A. 19'10. 'Ibe value of c:onodonts in the i:ecopilion

or

^{the Dev~ous boundary,} with particular

rer...,.

^{to Great}

Britain. C.-R. 6 Ctmgru Inter. StratIar. Gool. Corb., Sh.jJiold 1967, 2, 431_1. Maestricbt.,

& HILL 'P. 1. 1973. A Lowor Avonian (K Zone) conodont fa""" from n.ar

Tin""",

Mon- mouthlblre, Wales.

GooJo8t<a

et PakonJo/oglcD, 7, i23-13.4. Marbui':

& RHODPS P. H. T. 19'10: New Dinantian c:onodont faunas of F'ratIoO

imd

BeI/Iium.

Co"".

CoU; Strat. Corb., 193-196. l.iqje.

GLBNISTER. B .. &. KLAPPBR 'G. 1966. Upper Devonian conodonts from the Canning BaSin, Westfin Australia. PQ(oontololY, 40 (4),

m-842.

Tulaa, Oklahoma.

~~.J.,'4., J.r-»':~}" ':';;'~'l!'~' ... ;;.:; F~ •• !.; ^";;'::i ";., ..... . " .. :: ,"/b t'~ ::";" '".: \ .. ";';: : .. '::

- 1974. Distribution de conodootes don.· le Dinanlien de la Be1gique. I"'er. Sy"'l!'l~'I"!:0t'

N_, 1974, 17, 3-193. _ I s . . '. . .

JARQSZ J~ 1909adk,,"illr"I~"~KohIenIodb.j,,: dIl>' Umse\ItIDIr 'VOIl fCnoIra"'...s..,v,.Il1II ...

A..cod. PoL, _ _ 706. Krakbw. ·~::·,·:·:, ... Hl\.~ I.:':"

1909b. Fauna wapionia WQIIowego W okr_ kraIrowskim. Cz. L Trylobity .,~l\~.,P~

Koblenka1ks in der U_bung von lCrakau). Rozp,. PAU, B .." m, 18S-2~~

l4li;?/l'.

1913. Fauna wapienia ww\owqo " o~

krakowskim.

Try\obity".a..,.lL .(Renp .. ~

Kohlenkalb in der

Vni80buna

^von Krabu. TriIobit<il·n-leil),,""Rozpr;·P"~IB··83;'m.

51-87 Krak6w . If": ""~"'~'. : '''',

1914. Fauna

wa~

^{ww\owego w}

o~ krak~ , ~.: ~: ntiiUni' ~

Kobleokalk. in der ~bung von 1Crakau. BiadJiopoden.' J teiI). Rozpl'. P.4U,.Il.·,M,

m,

35-83. Krat6w. f~ ^{. • •} ·.I·'·~,

1917. Fauna wapiooia WQl!⁰

W1>89 ..

".S)J<:r~. ~1<\>V;'J!si."". ~:~~ .91· .!I,.WauDa

~n~~M: '~~~- "~~·'~u. }.~~·

^{1';W!l) .•}

~zw"".fAU,

1?1S,

.~~.I1~das ·~uoor ~;L .r~.~

^9'1-

F.w=~ .in,,~r,Pl'\llO!>lUII

van _~ Bull. mum. ACIId. p'o(:,j6~'J .. IQ1, .. ~~. " . . . " .

1926. Obecny stan badail nad s~IIii'deW6iiu I doIne80'bibOno w'okrwuktakowskim

~~iaIF~~l!~~~~xt~).~~~~t;j;.;,f.:r;! .MI!! 'I:

Warazawa.

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A. GROMCZAKIBWI<::z.LOMNICKA

STRATYGRAFIA OORNODEWOŃSKlCH I DOLNOKARBOŃSKICH OSADÓW DOLINY SZKLARKI: I RAClAWKl NA ZACHÓD OD KRAKOWA NA PODSTAWIE KONODONTÓW

(Streszczenie)

W dolinie Szklarki i Racławki k. Krakowa W)'St@ują lieme odsłoni~ia dolnego karbonu, a w dolinie Racławki także odsłoni~ najwyższego famonu (fig. l). Przedstawione wyniki badań

nad g6rnodcwońskimi i doJnokarbońs1cimi konodontami pochodzącymi z tych odsloni~ umożli­

wiły określenie wieku wszystkich utworów odslaniająC)':h si~ w Szklarce i prawie wszystkich 'w Racławcc. Na podstawie _połów konodontów wydzielono tu w najwyższym dewonie i dolnym karbonie z wymienionego obszaru nastwujące poziomy konodontowe (fiS. 2): środkowa lub górna

część poziomu eostat . . (odsłoni~ 2 w Recławcc), poziom Protognathod . . kockel"Siphonodello au/cata (odsłoni~e 1 w Racławcc), poziom SiphollOdella·PseudopolYf{1l<lthus triangulus InaequaJl3

(odsłoni~ 3 w Racławcc); poziom Sipho1lOdel/a-Pseudopolygnath . . triangul", triangubu (od-

sło~ 7 w Szklarce), Polygnathus communls car/nus (odsloni~ie 10 w Szklarce), Gna/badus semtglaber (odsIoDi~ 4 w Racławcc) oraz dolna częóć poziomu Cavusgnathus-Apatognathus (od-

s~e 8, 9 w Szklarce).

W pracy przeprowadzono porównanie między poziomami konodontowymi wyróżnionymi

przez autor~ i poziomami rarnienionogowymi ustalonymi przez Jarosza (1926). Z porównania tego wynika, że prawie wszystkie odsłoni~ Szklarki i Racławki lu opisane są' innego wieku niż pocbije to Jarosz.

Wydzielone poziomy konodontowe pozwalają, na dokładną korelację skał najwyższego famenu i dolnego karbonu okolic Krakowa z poziomami kondontowymi utworów Niemiec, Belgii i Wielkiej Brytanii.