Geol. Paläont. Mitt. Innsbruck, ISSN 0378-6870, Sonderband 4, S. … · 2008. 8. 4. · Geol....

Geol. Paläont. Mitt. Innsbruck, ISSN 0378-6870, Sonderband 4, S. 57-81,1996 lUBSUNEST

Project 362

NEW MICROBIOSTRATIGRAPHICAL DATA FROM SEVERALLOWER CRETACEOUS PELAGIC SEQUENCES OF THE NORTHERN CALCAREOUS

ALPS, AUSTRIA (PRELIMINARY RESULTS)

Daniela Reháková, JozefMichalík & Ladislava Ozvoldová

With 7 figures and 5 plates

Abstract:The article gives a survey of results of microfacies and rhicrobiostratigraphic investigation of Lower Cretaceous pelagic lime-stone sequences of six selected sections in Eastern Alps. The study contributes to the more widely oriented correlation IGCPProject No. 362, as well as to ALC APA Project. Attention was focused on distribution of the calpionellid microfauna in Texing,Reidl, Hohenberg, Großer Flösselberg, Anzenbach and Gartenau sections as well as on radiolarian associations in the Hohen-berg and Gartenau sections. The correlation of lithostratigraphic units coming from different paleotectonic environments wasenabled by combined utilization of various biostratigraphic markers (calpionellids, radiolarians, but also ammonites, etc.) andof several parallelly developed biostratigraphic scales. Preliminary results of this complex study indicate possible calibrationof variations in index microfossil distribution in individual sedimentary basins often affected by local factors.

Zusammenfassung:In dieser Studie werden die Ergebnisse der mikrofaziellen und mikrobiostratigraphischen Untersuchungen pelagischer Kar-bonatgesteinsfolgen anhand von sechs Profilen der Nördlichen Kalkalpen dargestellt. Die Untersuchungen stellen sowohleinen Beitrag zum IGCP-Projekt Nr. 362, als auch zum ALC APA-Projekt dar. Besonderes Augenmerk wurde auf die Verbrei-tung der Calpionellen in den Profilen Texing, Reidl, Hohenberg, Großer Flösselberg, Anzenbach und Gartenau gelegt. Aberauch die Erfassung der Radiolarienfauna in den Profilen Hohenberg und Gartenau war ein besonderes Anliegen. Durch denkontinuierlichen Einsatz verschiedener biostratigraphischer Marker (Calpionellen, Radiolarien, aber auch Ammoniten etc.)war es möglich, die lithostratigraphischen Einheiten aus den verschiedensten paläotektonischen Ablagerungsräumen zu kor-relieren. Die vorläufigen Ergebnisse der Studie zeigen auf, daß die Eichung von Index-Mikrofossilien in den jeweiligenBecken oft stark von lokalen Faktoren beeinträchtigt wird.

Introduction

In the frame of the ALCAPA partial project"Cretaceous and Paleogene paleogeography andgeodynamics of the Alpine-Carpathian-Panno-nian Region", led by Prof. Dr. F. Faupl from theGeological Department of the University of Vien-na, field works were organized with aim to estab-lish a basis for detailed lithostratigraphic correla-tion and interpretation of sedimentary regime inLower Cretaceous Alpine-Carpathian basins.Samples from six selected sections (Figs. 1,2) re-presenting Lower Cretaceous sequences of severalPenninic, Bajuvaric and Tirolic units of the East-ern Alps were collected during field season in sum-mer 1992.

The investigation of Lower Cretaceous micro-plankton is closely connected with orientation ofthe IGCP Project 362 (Tethyan and Boreal Creta-ceous Correlation). In the last few years, biostrati-graphical scales based on different organisms werecorrelated (ONDREJÍCKOVÁ et al., 1993; VASÍCEK etal., 1992,1994 a, 1994b). Special attention was fo-cused on local variations of microplankton associ-ations in various Tethyan regions (REHÁKOVÁ &MICHALÍK, 1992,1993,1994).

The study of Upper Jurassic and Lower Creta-ceous sequences stressed the need of more preciselithologie and biostratigraphic calibration, ena-bling more reliable correlation of neighbouringsedimentary basins. In this aspect, several widelyused lithostratigraphic terms (e. g. "Aptychen-

57

Fig. 1: Microbiostratigraphically investigated sections in Upper Jurassic and Lower Cretaceous sequences in the Austrian Eastern Alps.

kalk") do not answer to modern lithostratigraphicclassification.

Calpionellid microbiostratigraphy was devel-oped by authors working in Jurassic Cretaceoussequences of Western Alps footmountains (RE-MANE, 1964; REMANE, in BOLLI et al., 1985). Afewyears later, the calpionellid zonation was appliedand refined in the Carpathians, too (NOWAK, 1970;POP, 1974; BORZA, 1984; BORZA & MICHALÍK,

1986). Simultaneously, several pecularities in cal-pionellid distribution became more pronounced.Unfortunately, Upper Jurassic - Lower Creta-ceous calpionellid associations in the East Alpinepelagic limestone sequences which could fill thegap between the two areas mentioned were inade-quately investigated only (KRISTAN-TOLLMANN,

1962; FLÜGEL & FENNINGER, 1966; GARRISON,

1967; HÖLZER, 1968; FENNINGER & HÖLZER,

1970; WIDDER, 1988).The Jurassic and Lower Cretaceous radiolarian

biostratigraphy was used for correlation of deep-sea deposits (PESSAGNO, 1977). It was adapted byBAUMGARTNER et al. (1980, 1984, 1987) andSCHAAF (1984, 1985) for the Mediterranean Te-thys. Interest of stratigraphers is concentrated onits correlation with the calpionellid and ammonitezonations.

1.1. Setting

1. The Texing section in the Penninic Gresten Klip-pen Belt is exposed by a road cut to the Planken-stein Castle southwest of St. Polten (Fig. 1).Upper Jurassic fluxoturbidites (Scheibbsbachand Konradsheim Fms) and pelagic limestones(Arzbergkalk) crop out above Middle Jurassiccherty sequence (Lampelsberg Fm). 22 sam-ples were taken from the Lower Cretaceousrhythmical limestone- and marly complex be-longing to the Blassenstein Fm. It is overlain byMiddle Cretaceous variegated marls (Buntmer-gelGp,Fig.2).

2. The Penninic Ybbsitz Zone is represented bythe Reidl section, exposed by a small quarryWSW of Ybbsitz and southward from Amstet-ten (OZVOLDOVÁ & FAUPL, 1993). Middle Ju-rassic silicites (Rotenberg Fm) are followed bypelagic limestones (Fasselgraben Fm, ninesamples) with breccia and turbidite beds. Va-langinian to Coniacian turbidite sequence ofmarly siltstones to sandstones with breccia andclaystone intercalations (Glosbach, Haselgra-ben and Ybbsitz Formations) forms its over-lying.

58 Geol. Paläont. Mitt. Innsbruck, Sonderband 4, 1996

AgeP EN N I N I C

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Sections:

1 - Texing, 2 - Reidl, 3 - Hohenberg, 4 - G. Flösselberg, 5 - Anzenbach, 6 - Gartenau

Fig. 2: Lithostratigraphy of Upper Jurassic and Lower Cretaceous formations in selected Austroalpine units.

3. The Hohenberg section in a forest road cutabove Anzenbach south from Steyr representsFrankenfels Nappe development (RettenbachMulde) of the Bajuvaric. Upper Jurassic to Ber-riasian nodular Steinmiihl Limestone is cov-ered by Schrambach Formation built of thin-bedded spotted marly limestones intercalatedby marls. The latter pass into blackish marl-stones with marly limestone intercalations be-longing to the Tannheim Fm (Fig. 2). Albian toCenomanian Losenstein Fm is formed by ashaly complex with rhythmic sandstone inter-calations.

4. Lunz Nappe of Bajuvaric is represented by asection in the Perlmooser Zementwerke Quarryon the Großer Rösselberg near Kaltenleutge-ben (Wienerwald) at the southwestern peri-phery of Vienna. There is a complex of nodularlimestones (Steinmiihl Fm) covered by cementmarls and well-bedded grey spotted limestoneswith allodapic intercalations (SchrambachFm). Turbidites of the Roßfeld Formation fol-low with erosional unconformity above it.

5. Tirolic Lower Cretaceous pelagic sequence hasbeen studied in Leube brothers cement quarry

Geol. Paläont. Mitt. Innsbruck, Sonderband 4,1996 59

in Gartenau near St.Leonhard southward fromSalzburg. Upper Jurassic Oberalm Fm com-prising slumped bodies of Permian, Triassicand Lower Jurassic rocks (PLÖCHINGER, 1974;MATURA & SUMMESBERGER, 1980) are coveredby a thick complex of well-bedded spottedmarly limestones of Schrambach Fm, cappedby reddish marly Anzenbach Limestone. Thesequence it terminated by sandy marly and con-glomeratic (olisthostrome- rich) Roßfeld Fm.

2. Lithostratigraphy and microfacies

2.1.Penninic units

These sequences represent the record of a syn-rift sedimentation in the Penninic Ocean, whichhas been spreading during Jurassic and LowerCretaceous. The rests of their sediments weremostly subducted during Alpine orogenesis, onlybeing preserved in two zones of tectonic slices.The Gresten Klippen Belt is characterized by flu-viatile to shallow-marine Lower and Middle Ju-rassic Gresten Beds, followed by pelagic cherts(Lampelsberg Fm) and limestones (BlassensteinFm), and then by the Buntmergelserie of Creta-ceous to Eocene age (Fig. 2). On the other hand,the Ybbsitz Klippen Belt contains an ophiolite se-quence (HOMAYOUN & FAUPL, 1992), representedby ultrabasics and basic rocks, Mn cherts, ra-diolarites (Rotenberg Fm) and pelagic limestones(Fasselgraben & Glosbach Fms). The sedimenta-tion continued by Cretaceous flysch (HaselgrabenFm).

2.1.1. Gresten Zone (Texing section)

Bedded dark-gray silicified mudstone containssporadic pyritized radiolarians, sponge spiculesand Colomisphaera tennis (NAGY). Overlyingvariegated marly pelbiosparites contain Textula-ria sp., Cadosina semiradiata semiradiata WAN-NER, Cad. fusca fusca WANNER, Cad. párvula(NAGY), Colomisphaera radiata (VOGLER),

Schizosphaera minutissima (COLOM), Carpisto-miosphaera tithonica NOWAK, bivalve shell frag-ments, crinoids, aptychi, pellets with silicified nu-clei, rhombs of authigene feldspars, silt quartz andglauconite grains. The association of microfossils(Fig. 3) is typical of Early Tithonian TithonicaZone.

Overlying indistinctly nodular limestones con-tain microfossils of the Early Tithonian MalmicaZone: Parastomiosphaera malmica BORZA, Ca-dosina fusca fusca, Colomisphaera carpathica(BORZA), Globochaete alpina LOMBARD, Sacco-coma sp., foraminifer fragments, crinoids and ap-tychi. Slightly silicified sediment contains siltyadmixture of quartz, mica and glauconite.

A few fluxoturbidite intercalations (up to 25 cmthick) are built of gray fine-grained organodetritallimestone with biopelmicrosparite texture. It con-tains Carpistomiosphaera tithonica, Cadosinasemiradiata semiradiata, Cadosina fusca fusca,Pieninia oblonga, Textularia sp., Quinqueloculi-na sp., Parastomiosphaera malmica, foraminiferfragments, crinoids, aptychi, bivalves and ostra-cods. The presence of fluxoturbidite intercalationsin the described part invokes a comparison withthe upper member of the Konradsheim Formation.

Pale micrites of the Majolica type belong to cal-pionellid, calpionellid-radiolarian and radiolarianwackestone to mudstone. Bed thickness decreasesupwards. The lower part of the complex containsmicrofossils of the Late Tithonian CrassicollariaZone: Crassicollaria intermedia (D. DELGA), Cr.colomi DOBEN, Cr. párvula REMANE, Calpionellaalpina LORENZ, Tintinnopsella carpathica (MUR-

GEANU et FILIPESCU), Schizosphaerella minutissi-ma, Cadosina fusca fusca, Globochaete alpina,calcified radiolarians, foraminifer fragments, cri-noids and bivalves. While the lithology of Berria-sian limestones remains unchanged, microfossilassociation (Fig. 3) is dominated by sphaericalform of Calpionella alpina, later accompanied byRemaniella fer asini, R. cadischiana (COLOM) andCalpionella elliptica CADISCH.

Thin-bedded pale gray-spotted limestone withrhythmic marly intercalations (biomicrite of mud-stone/wackestone type) is the most typical mem-ber of the Blassenstein Formation. It contains mi-

60 Geol. Paläont. Mitt. Innsbruck, Sonderband 4,1996

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tychi and juvenile ammonites: Berriasian Calpio-nella wackestone with Calpionella alpina, Tintin-nopsella carpathica, Colomisphaera carpathica;pelbiosparites with foraminifer fragments; sucro-sic dolomitic and siliceous limestones; cherts andshales. Matrix of the breccias contains dispersedquartz (up to 2 mm in diameter) and glauconitegrains.

2.1.2. Ybbsitz Zone (Reidl section)

Radiolarian associations of the RotenbergFormation were evaluated in detail by OZVOL-

DOVÁ & FAUPL (1993). They indicate middleCallovian to late Oxfordian age of the chert se-quence.

The lower member of the Fasselgraben Forma-tion consists of indistinctly nodular limestone.The samples taken from its base contain microfos-sils (Fig. 4) of late Tithonian Crassicollaria Zone:Crassicollaria párvula, Cr. massutiniana, bothelongated and sphaerical forms of Calpionella al-pina, Tintinnopsella carpathica, Globochaete al-pina, Schizosphaerella minutissima. The problemconcerning indentifícation of the Kimmeridgianinterval in this sequence (cf. DECKER, 1990) re-mains unsolved.

Higher-up lying well-bedded pale "Majolica"type micrite limestone comprises allodapic inter-calations (distal turbidites, cf. HOMAYOUN &FAUPL, 1992). Microfossil content (Fig. 4: Calpio-nella alpina, C. minuta, Remanie lia fe ras ini (CA-TALANO), R. filipescui POP, Tintinnopsella car-pathica, Crassicollaria párvula, Cadosina fuscafusca, Colomisphaera carpathica, Schizosphaer-ella minutissima, Didemnum carpaticum, Globo-chaete alpina, Nannoconus sp., accompanied byaptychi fragments, foraminifers, ostracods, bivalves,crinoids and belemnites) indicates early/middle Ber-riasian age.

The clasts in breccia beds were derived fromKimmeridgian Saccocoma-Globochaete pack-stone with Colomisphaera pieniniensis, Cadosinapárvula', lower Tithonian Saccocoma wackestonewith Parastomiosphaera malmica, Cadosinafusca fusca, Globochaete alpina, radiolarians, ap-

2.2. Bajuvaric units

Upper Jurassic and lower Cretaceous sedi-ments of these units have been deposited in a sy-stem of subsiding basins and elevations in thewestern part of the Alpine-Carpathian microconti-nent (Fatric and Hronic units of the Central West-ern Carpathians form their eastward continuation,cf. MICHALÍK, 1994). Microfacies of pelagic ele-vations of this age (as well as their calpionellid mi-crofauna) in the Frankenfels Nappe (Pechgrabenarea) have been described by KRISTAN-TOLLMANN

(1962) and HÖLZER (1968).

2.2.1 .Frankenfels Nappe (Hohenberg section)

Red nodular biomicrite limestone - called theSteinmiihl Limestone - forms a considerable partof the Kimmeridgian/Lower Valanginian se-quence in the Rettenbach Mulde of the Franken-fels Nappe (FLÜGEL, 1967). Despite several prob-lems caused by expressive condensation of this se-quence, the following microfacies units could bedistinguished:

a. The lowermost, Kimmeridgian member is builtof Globochaete packestone with microfauna ofLenticulina sp., radiolarians, ostracods, "fila-ments" of juvenile bivalves and crinoids. Its up-permost part, belonging to the mid-TithonianChitinoidella Zone contains Chitinoidella bo-neti, Ch. slovenica, Schizosphaerella minutissi-ma, Cadosina fusca fusca, Colomisphaera car-pathica, phosphatized fish teeth, aptychi, cri-noid columnalia, radiolarians and foraminifers,as well (Fig. 5).


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b. Crassicollaria-Globochaete wackestone of thelate Tithonian Crassicollaria Zone enclosesCrassicollaria brevis, Cr. colomi, Cr. párvula,Calpionella alpina, Globochaete alpina, Tin-tinnopsella carpathica, aptychi, crinoid colum-nalia and foraminifers.

c. Lower Berriasian Calpionella wackestone withTintinnopsella carpathica, Calpionella alpina,C elliptica, Remaniella ferasini, R. filipescui,R. cadischiana (COLOM), Globochaete alpina,Schizosphaerella minutissima, Lenticulina sp.,radiolarians and crinoids pass upwards into bio-

micrite with less abundant microfossil associa-tion of the late Berriasian Calpionellopsis Zone(PI. 1) C. simplex, C. oblonga, T. carpathica, R.cadischiana, R. borzai POP, Cadosina fuscafusca, Calpionella alpina, Globochaete alpina,Textularia sp., crinoids and foraminifers.

Thin-bedded gray-spotted marly limestonewith laminae and intercalation of marl belongs tothe Schrambach Formation. Nannoconid and ra-diolarian-nannoconid wackestone to mudstonecontains Colomisphaera heliosphaera, Col. luci-da, Col vogleri, Cadosina fusca fusca, Stomio-


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• Colomisphaera lucida•—•—• Colomisphaera heliosphaera

• • Globuligerina hoterivica• • Hedbergella sigali

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sphaera wanneri, Tintinnopsella carpathica, T.longa, radiolarians (PI. 2), Acanthocircus dicran-acanthos (SQUINABOL), A. trizonalis (RÜST),

Acaeniotyle diaphorogona FOREMAN, AC. umbili-cata (RÜST), Alievium helenae SCHAAF, Angulo-bracchia (?) portmanni BAUMGARTNER, Archaeo-dictyomitra lacrimala (FOREMAN), Cecrops sep-temporatus (Parona), Cmcella sp., Sana echiodes(FOREMAN), Paronaella (?) spinosa (PARONA),

Pseudocmcella procera OZVOLDOVÁ, Crucellalipmanae JUD, Sethocapsa leiostraca FOREMAN,

S. trachyostraca FOREMAN, S. uterculus (PARO-

NA), Ultranapora cf. dumitricai PESSAGNO, Wrdn-gelium medium Wu, ostracods and sponge spic-ules. Clastic admixture is represented by quartzgrains and muscovite flakes. Calpionellids disap-pear upwards, being substituted by the planktonicforaminifers Globuligerina hoterivica and Hed-bergella sigali.

Aptian association of planktonic foraminifersbelonging to the Globigerinelloides blowi Zone(PI. 3) was documented in a black marly complexwith limestone intercalations (Tannheim Forma-tion). A sample with early Albian plankton forami-nifer association Hedbergella globigerinelloides,Ticinella sp. and Whiteinella sp. has been takenfrom the top part of the sequence.

2.2.2. Lunz Nappe (G. Flösselberg section)

Pink to pale brown micritic Steinmiihl Lime-stone is characterized by Calpionella-radiolarianto radiolarian wackestone texture. It contains themicrofossil association of the Remaniella Sub-zone (Fig. 6, PI. 4): Calpionella alpina, Tint, car-pathica, Remaniella cadischiana, Rem. ferasini,Crassicollaria párvula, Cr. colomi, Nannoco-nus sp., Globochaete sp., foraminifers, aptychifragments and bivalves.

The Schrambach Formation consists of a rhyth-mic sequence of gray-spotted marly limestones(biomicritic mudstone to wackestone). VASÌCEK etal. (in print) described the microfossil associationof the Tintinnopsella Zone from this section: Tin-tinnopsella carpathica, Tintin. subacuta (COLOM),

Cadosina semiradiata semiradiata, C. semiradia-

ta cieszynica NOWAK, C. semir. olzae NOWAK, C.fusca fusca, Colomisphaera vogleri, Cadosinop-sis nowaki BORZA, Stomiosphaera echinataNOWAK, St. wanneri, Carpistomiosphaera valan-giniana BORZA, Didemnoides moreti, Globo-chaete alpina with abundant nannoconids, ra-diolarians, foraminifers, aptychi fragments, cri-noids, ostracods. This micro- and macrofossil(ammonites, aptychi) association indicates earlyHauterivian age.

The formation comprises several fine-graineddetrital limestone beds of fluxoturbidite origin.They are built of siliceous bioclastic packestonewith mass accumulation of sponge spicules, ac-companied by Cadosina fusca cieszynica, ra-diolarians, foraminifers and crinoid columnalia.Clasts of biomicrite wackestone with Calpionellaalpina occur sporadically. Clastic quartz and glau-conite grains are frequent, being accompanied byless abundant mica flakes.

2.2.3. Reichraming Nappe N

(Anzenbach section)

Small quarry near the road from the AnzenbachValley to Brennhöhe exposes upper member of theSchrambach Formation, built of dark gray marl-stones/marly limestones. It yielded an early Hau-terivian macrofauna of ammonites and belemnites(VASÌCEK et al., in print). Nannocone mudstonecomprises microfossil association of the Tintin-nopsella Zone: Cadosina fusca fusca, Cad. semi-radiata olzae, Stomiosphaera echinata, Tintin-nopsella carpathica (PI.4).

2.3. Tirolic units

They represent the main structural element ofthe Northern Calcareous Alps (JANOSCHEK & MA-

TURA, 1980). They comprise several partial tec-tonic units (Inntal-, Staufen-Höllengebirge-, TotesGebirge-, Ötscher nappes). Upper Jurassic andLower Cretaceous sedimentary record is repre-sented by products of a basin (pelagite limestonesof the Oberalm- and Schrambach formations; tur-

Geo/. Paläont. Mitt. Innsbruck, Sonderband 4,1996 65

F L Ö S S E L•GIESSHÜBEL MULDE

21

5 m-i

O J

20

19

1.8

17

16

15

14

13

12

11

10

9

8

7

T Y r

— ir. o. rz

— «-;<-> —

c o

3 -S

Fig. 6: Microbiostratigraphic evaluation of the Flössel section, Lunz Nappe of the Bajuvaric, Northern Calcareous Alps.

bidites of the Barmstein Formation) rimmed fromthe south and east by a shallow-marine carbonateplatform (Plassenstein- and Tressenstein forma-tions). During Hauterivian and Barremian thebasin was filled by clastic sediments derived fromemerging zones in the south (RoßfeldFormation).

2.3.1. Staufen-Höllengebirge Nappe(Gartenau section)

Well-bedded gray cherty micrites with aptychifragments (Oberalm Fm) were interpreted as deepbasinal deposits (FLÜGEL & FENNINGER, 1966).


They are characterized by Saccocoma wackestonestructure with Colomisphaera carpathica, Globo-chaete alpina, foraminifers, ostracods and crinoidcolumnalia of Kimmeridgian age. Upwards, theserocks pass into Saccocoma-Globochaete wacke-stone (PI. 4) with Praetintinnopsella andrusoviBORZA, Colomisphaera carpathica and radiolari-ans representing lower Tithonian strata. The top-most Crassicollaria-Globochaete wackestonewith Crassicollaria intermedia, Cr. párvula, Cal-pionella alpina, Tintinnopsella carpathica ac-companied by radiolarians (PI. 5): Acanthocircusdicranacanthos, Archaeodictyomitra apiaria,Emiluvia chica FOREMAN, Emiluvia ordinariaOZVOLDOVÁ, Pantanellium squinaboli (TAN),

Pseudodictyomitra carpatica (LOZYNYAK), Tha-narla sp. B. Tritrabs ewingi (PESSAGNO), forami-nifers, crinoids, sponge sclerites and ostracodsrepresents upper Tithonian. The Oberalm Forma-tion contains calciturbidite layers of fine-detritalpackestones and grainstones (Barmstein Fm).

FENNINGER & HÖLZER (1972), relying on cal-pionellid zonation applied here by GARRISON

(1967), regarded higher-lying well-bedded graymarly, locally bioturbated limestones with lami-nae or intercalations of marl as upper member ofthe Oberalm Beds. However, different lithologyand microfauna of these beds lead us to the conclu-sion to consider them as part of the SchrambachFormation. It is represented by radiolarian wacke-stone and nannoconid mudstone. Dominating ra-diolarians Archaeodictyomitra apiaria (RÜST),

Archaeodictyomitra excellens (TAN SIN HOK),Holocryptocanium barbui DUMITRICÄ, Mirifususdianae (KARRER), Pantanellium squinaboli (PA-

RONA), Parvicingula cosmoconica (FOREMAN),

Podobursa triacantha (FISCHLI), Pseudodictyo-mitra carpatica (LOZYNYAK), Sethocapsa. cf.pseudouterculus AITA, Thanarla conica (ALIEV),

Thanarla sp. A, are accompanied by microfossilsof Berriasian Calpionella- and CalpionellopsisZones (PI. 4): Calpionella alpina, Tintinnopsellacarpathica, Calpionella elliptica, Remaniella ca-dischiana, Calpionellopsis simplex, Cadosinafusca fusca, Schizosphaerella minutissima, spon-ge spicules, ostracod tests, foraminifer fragments.

3. Discussion

Six sections representing Lower Cretaceouspelagic limestone sequences of selected units ofthe Eastern Alps have been evaluated microbio-stratigraphically.

Majolica type limestones of the Penninic units(Texing section in the Gresten Zone; Reidl sectionin the Ybbsitz Zone) yielded rich associations ofBerriasian calpionellid comparable with those inthe Pieniny Klippen Belt of the Western Carpathi-ans. The occurrence of limestone breccias in thesouthern Penninic Ybbsitz Zone is remarkable.They resemble the Nozdrovice Breccia, studied inthe Western Carpathians by REHÁKOVÁ & MICH-

ALÍK (1995). The clasts from this breccia were de-rived from underlying Upper Jurassic strata aswell. However, in addition, they also containabundant clastic quartz and glauconite grains, andeven crystalline schist fragments, similar to equiv-alent breccias described by REHÁKOVÁ et al.(1995) from the Outer Carpathian Magura Basin,or by PLASIENKA et al. (1994) from the southernmargin of the Penninic Basin in the Povazsky Ino-vec Mts (Central Western Carpathians).

The Hohenberg section (in the FrankenfelsNappe) well illustrates the persistence of lime-stone facies of the "Ammonitico Rosso" type(here represented by the Steinmiihl Formationwith Tithonian and Berriasian calpionellid associ-ations) until the earliest Valanginian. Calpionellidloricas from these associations are larger and theirexcellent preservation proves more rapid lithifica-tion of the sediment if compared with their basinalcounterparts. The persistence of Upper Jurassicelevation facies is unusual in the majority of Al-pine and Carpathian Lower Cretaceous sequenc-es. Noteworthy, a similar habitus of calpionellidloricas has been described in peripheral parts ofthe Fatric area in the central Western Carpathiansby BORZA (1969, from the Manin Unit) or byMICHALÍK et al. (1994, MLS-1 borehole, northernmargin of the Humenné Mts).

The Valanginian-Hauterivian part of the LowerCretaceous pelagic sequence of the FrankenfelsNappe is represented by the basinal SchrambachFormation. In several units of the Bajuvarie


O B E R A L M FM I S C H R A M B A C H F O R M A T I O N

Saccocoma sp.Colomisphaera carp.atica

t i iSchizosphaerel la minutissima— Cadosina fusca fusca

• Didemnum carpaticum• ? Chítinoídella boneti

• Praetintinnopsella andrusovi• »Didemnoides moreti• Gemeridella minuta• Cadosina fusca cieszynica

• Crassicollan'a intermedia• Crassicollaria massutiniana•Tinfinnopsella carpathica» <

— • Cadosina semiradiata semiradiataRemaniella Ferasini •

-• Calpionellaalpina

• Remaniella Filipescui• Tintinnopsella longa• Stomiosphaerina próxima

• :—• Calpionella ellipticaCalpionellopsis simplex •

Colomisphaera conferta • •Calpionellopsis oblonga • •

. . . . ,. ,. Stomiosphaera echinata •Acanthocircus dicranacanthosArchaeodictyomitra savignanensisEmiluvia chicaEmiluvia salensisHemicryptocapsa sp.Pantaneüium lanceola

•-• Pseudodictyomitra carpaticaThanarla aff. conicaTrïtrabs ewingi

Archaeodictyomitra apiariaArchaeodictyomitra excellensHplocryptocanium barbuiMirifusus dianaePantanellium lanceolaPraeparvicingula cosmoconicaPodobursa triacanthaSethocapsa cf. pseudouterculusThanarla conicaThanarla sp.Zhamoidellus sp.

? Chitinoidella Z

.P

raetintinnopsella

Crassicollaria Z

.

A l p i n a

C aR e m a n i e l l a | E l l i p t i c a

p i o n e l l a Z o n eC a l p i o n e l -l ops i s Z.

Fig. 7: Microbiostratigraphic evaluation of the Gartenau section, Staufen-Höllengebirge Nappe of the Tirolic, Northern Calcareous Alps.

(Lunz-, Reichraming Nappes) and of the Tirolic(Staufen-Höllengebirge Nappe), basinal develop-ment started as early as in the Berriasian. Besidescalcareous microplankton, stratigraphically im-portant ammonites and radiolarians helped to es-tablish the age of this formation. Cecrops septem-

poratus and Crucella lipmanae indicate late Va-langinian to early Hauterivian age of the radiolari-an association (cf. BAUMGARTNER, 1984, 1987;JUD, 1994; GORICAN, 1994), occurring in theSchrambach Formation of the Hohenberg section(Bed No. 9; Fig. 5, PI. 2) along with calcareous mi-


croplankton of the Tintinnopsella Zone. EarlyHauterivian age of the Schrambach Fm in the G.Flösselberg section is (besides microplankton ofthe Tintinnopsella Zone) also evident by findingoiSpitidiscus sp. and Lamellaptychus cf. serrano-

nis (VASÌCEK et al., 1994 a).

Occurrence of the radiolarian Unitary Associa-tion U.A. 11 (according to BAUMGARTNER, 1984,1987) in the sample No. 18 from the Gartenau(Leube) section (Staufen Nappe of Tirolic) corre-sponds quite well to the lower Berriasian calpionel-lid association characterizing the Alpina Subzone.

If compared with the sample mentioned, the asso-ciation of the Bed No. 17 (Fig. 7), although moreabundant, comprises species with wider stratigraph-ie span. According to BAUMGARTNER (I.e.), Holo-

cryptocanium barbui DUMITRICÄ should appearduring the late Berriasian. However, it occurs in as-sociation of lower Berriasian calpionellids. A similarcase (the occurrence of "stratigraphically younger"Pseudodictyomitra lilyae and Archaeodictyomitra

nuda in the lower Berriasian association 11 U.A.)was recorded by ONDREJÍCKOVÁ et al. (1993).

Radiolarian biostratigraphic scale is still in pro-gress now. We hope that new data on the strati-graphic range of radiolarian taxa from detailed Ber-riasian key sections supported by other index fossilswill lead to a more precise view in proximal future.

4. Acknowledgements

The authors express their sincere thanks to Prof.

Dr. Peter Faupl, Geological Institute, University

of Vienna, who organized their stay in Austria,

guided field works and contributed many valuable

comments to this paper.

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Plate 1

Calcareous microplankton from the Steinmiihl Formation in the Hohenberg section (Frankenfels Nappe of the Bajuvaric),

Northern Limestone Alps. The specimens were derived from beds No 4 (Figs. 7-8,10-11,13), 5 (Fig. 12) and 6 (Figs. 1-6,9).

Magnification: 155 x (Figs. 1-3,6,10,12) and 265 x (Figs. 4-5,7-9,11,13), respectively.

Fig. 1 : Textularia sp.

Fig. 2: Permodiscus sp.

Fig. 3 : Calpionellopsis oblonga (CADISCH)

Fig. 4: Calpionellopsis simplex (COLOM)

Fig. 5 : Remaniellafilipescui POP

Fig. 6: Calpionellopsis oblonga (CADISCH)

Fig. 7 : Colomisphaera carpathica (BORZA)

Fig. 8 : Chitinoidella boneti DOBEN

Fig. 9: Tintinnopsella carpathica (MuRGEANU et FILIPESCU)

Fig. 10: Saccocoma sp.

Fig. 11 : Chitinoidella boneti DOBEN

Fig. 12: Calpionella elliptica CaDisCH and Tintinnopsella carpathica (MURG. et FILIP.)

Fig. 13: Cadosina semiradiata'WANNER


Geol. Paläont. Mit!. Innsbruck, Sonderband 4,1996 73

Plate 2

Radiolarian association from the Hohenberg section, Frankenfels Nappe of the Bajuvaric, Northern Limestone Alps,sample 21.

Fig. 1 : Foraminifer Anomalinidae gen. indet., 115 x

Fig. 2: Suna echiodes (FOREMAN), 200 x

Fig. 3 : Crucella lipmanae JUD, 130 x

Fig. : Acanthocircus dicmnacanthos (SQUENABOL), 240 x

Fig, 5: Sethocapsa uterculus (PARONA), 300 x

Fig. 6: Archaeodictyomitra lacrimala (FOREMAN), 240 x

Fig. 7: Angulobracchia (?)portmanni BAUMGARTNER, 150 x

Fig. 8 : Wrangellium medium Wu, 280 x

Fig. 9: Pseudocrucella procera OZVOLDOVÁ, 175 x

Fig. 10: AlieviumhelenaeSchAAF,ì95x

Fig. 11 : Ultranapora cf. dumitricai PESSAGNO, 240 x

Fig. 12: Cecrops septemporatus (PARONA), 215 X

Figs. 13,15: Crucellasp., 240 and 350 x, proximal and lateral view

Fig. 14: Paronaella (?) spinosa (PARONA), 160 X

74 Geol Paläont. Mitt. Innsbruck, Sonderband 4, 1995/96

Plate 3

Calcareous microplankton from the Tannheim- (Figs. 1-4), Schrambach- (Figs. 5-15) and Oberalm (Figs. 16-19) formationsin both the Hohenberg- (Frankenfels Nappe of Bajuvaric) and Gartenau (Staufen-Höllengebirge Nappe of the Tirolic) sections,Northern Limestone Alps. Magnification 155 (Fig. 5) and 265 x (Figs. 1-4,6-19), respectively.

Fig. 1 : Hedbergella sigali MOULLADE, Hohenberg No. 15

Fig. 2: Globigerinelloides blowi (BOLLI), Hohenberg No. 21

Fig. 3: Hedbergella globigerinelloides (SuBB.), Hohenberg No. 23

Fig. 4: Ticinella sp., Hohenberg No. 24

Fig. 5 : radiolarian wackestone, Hohenberg No. 9

Fig. 6: Tintinnopsella carpathica (MURG. et FIL.) Hohenberg No. 11

Fig. 7: Calpionella elliptica CADISCH, Gartenau No. 7

Fig. 8: Schizosphaerella minutissima (COLOM), Gartenau No. 7

Fig. 9: Colomisphaera heliosphaera (VOGLER), Hohenberg No. 14

Fig. 10: Colomisphaera vogleri (BORZA), Hohenberg No. 11

Fig. 11 : Stomiosphaera wanneri BORZA, Hohenberg No. 23

Fig. 12: Calpionella alpina LORENZ, Gartenau No. 2

Fig. 13 : Calpionella elliptica CADISCH, Gartenau No. 4

Fig. 14: Remaniella cadischiana (COLOM), Gartenau No. 4

Fig. 15 : Cadosina semiradiata semi radiata WANNER and Cadosinafuscafusca WANNER, Gartenau No. 1

Fig. 16: Praetintinnopsella andrusovi BORZA, Gartenau No. 23

Fig. 17: Crassicollaria intermedia (DUR. DELGA), Gartenau No. 22,

Fig. 18. Schizosphaerella minutissima (COLOM), Gartenau No. 22

Fig. 19: Colomisphaeracarpathica(BORZA),GartenauNo.24

76 Geol. Paläont. Mitt. Innsbruck, Sonderband 4, 1995/96

Plate 4

Calcareous microplankton from the Schrambach Formation, Lunz (G. Flösselberg section, Figs. 2-3,5-13), and Reichraming

(Anzenbach section, Figs. 1,4) nappes of the Bajuvanc, Northern Limestone Alps. Magnification 265 x.

Figs. 1-2: Cadosinafuscafusca WANNER

Fig. 3 : Schizosphaerella minutissima (COLOM)

Figs. 4-5 : Cadosina semiradiata olzae NOWAK

Fig. 6 : Cadosinopsis nowaki B ORZA

Fig. 7 : Colomisphaera confería REHÁNEK

Fig. 8 : Colomisphaera vogleri (BORZa)Fig. 9: Carpistomiosphaera valanginiana BORZA

Fig. 10 : Stomiosphaera echinata NOWAK

Figs. 11-12: Tintinnopsella carpathica (MURGEANU et FILIPESCU)

Fig. 13 : Remaniella boriai POP

78 Geol. Paläont. Mitt. Innsbruck, Sonderband 4, 1995/96

Plate 5

Late Tithonian / Berriasian radiolarian association from the Gartenau (Leube) section, Staufen-Höllengebirge Nappe of the Ti-

rolic, Northern Limestone Alps. Specimens 1-4,9-10,15 came from sample L-18, specimens 5-8,11-14 were yielded from

sample L-17.

Fig. 1 : A rchaeodictyomitra apiana (RüST), 450 x

Fig. 2: Pseudodictyomitra carpatica (LOZYNYAK), 280 x

Fig. 3 : Emiluvia ordinaria OZVOLDOVÁ, 200 x

Fig. 4: Thanarla conica (ALIEV), 400 x

Fig. 5 : Thanarla sp. A, 400 x

Fig. 6: Sethocapsa cf. pseudouterculus ATTA, 300 x

Fig. 7 : Parvicingula boesii (P ), 300 x

Fig. 8: Archaedictyomitra exceltens (TAN SIN HOK), 240 x

Fig. 9: Pantanellium squinaboli (TAN), 300 x

Fig. 10: Thanarla sp. B., 300 x

Fig. 11 : Parvicingula cosmoconica (FOREMAN), 330 x

Fig. 12: Pseudodictyomitra carpatica (LOZYNYAK), 300 x

Fig. 13: Archaedictyomitraapiaria (RüST), 280x

Fig. 14: HolocryptocaniumbarbuiT>\Mn^lCk,2%0\

Fig. 15 : Emiluvia chica FOREMAN, 160 X


Geol. Paläont. Mitt. Innsbruck, ISSN 0378-6870, Sonderband 4, S. … · 2008. 8. 4. · Geol....

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