Showing papers in "Acta Geologica Polonica in 1971"

Upper Devonian conodonts, stratigraphy and facial development in the Holy Cross Mts

Abstract: The problems of stratigraphy, facial differentiation and the history of sedimentation of the Upper Devonian in the western part of the Holy Cross Mts (Central Poland) are the subject of the paper. The stratigiraphical subdivision have been based on the conodonts. All platform conodonts and a few other, stratigraphically important species have been monographed. Of the 80 species described (together with subspecies) which are assigned to 11 genera, the following five species or subspecies are new: Ancyrodella sinecarina sp. n., Palmatolepis circularis sp. n., Palmatolepis minuta wolskae subsp. n., Polygnathus sinuosus sp. n. and Pelekysgnathus ? sp.n. The conodont zonation, adopted for the correlation of profiles, enabled the solution of several problems of regional stratigraphy. The history of the Frasnian and Famennian sedimentation has been restored on the basis of their facial (including microfacial) analysis.

Upper Jurassic coral assemblages of the Central Polish Uplands

Abstract: The Upper Jurassic coral assemblage of the Holy Cross Mts and Polish Jura Chain are composed of: a) foliaceous and submassive colonies, b) branching colonies and c) massive subspherical colonies. The character of corals and associated fauna and flora, as well as deposits in which the assemblages occur indicate a very shallow-water environment. The character of this environment and the process of sedimentation, which accompanied the growth, indicate i.a. that the assemblages were formed by the accretion of colonies at a rate equaling that of the sedimentation. An increase in the rate of sedimentation caused the end of their development. The assemblages discussed did not supply detrital material to the sediment and did not exert a decisive influence on the course of sedimentation, which makes them similar to Recent patch reefs of the Bahamas.

Sedimentary structures of the Upper Silurian siltstones in the Polish Lowland

Abstract: Data concerning the Upper Silurian siltstones in the Polish Lowland have been gained from deep boreholes. A report is here given of a detailed analysis of the sedimentary structures of these deposits. An attempt has been made to restore the mechanism of the formation of the silts tone beds and to determine the transport directions of the detrital material. The origin of the deposits here considered is also discussed and suggestions are made of the strong difficulties to determine whether their source areas lay in the orthogeosynclinal zone or within the craton.

Ichnospecific variability of the Upper Cambrian Rusophycus from the Holy Cross Mts

Abstract: The rusophyci, i.e. the resting places of the trilobites from the Upper Cambrian deposits outcropping at Wielka Wiśniowka in the Holy Cross Mts, are presented and their variability explained. All these rusophyci belong to one ichnospecies Rusotphycus polonicus Orl., Radw. and Ron., the taxonomical importance of which is discussed. Regarded is also an ichnspecific variability of these trace fossils, being the result of various behavior of the trace-making trilobites and on the other hand, the effect of environmental conditions.

Stratigraphy and palaeogeography of the Ordovician in the Holy Cross Mts

Abstract: The biostratigraphic division of the Holy Cross Ordovician is based for both facial regions, that of Kielce and of Łysogory, on brachiopods, trilobites, graptolites and conodonts. The Holy Cross conodonts had not previously been worked cut. The writer's investigations of that faunal group have led to the discovery within the Kielce region of the Llandeilo and Caradoc stages. The palaeogeographic-and facial relations in the above regions are discussed, too. in the Łysogory region, the sedimentation took place in a sea that had persisted since the Cambrian and was characterized by considerable depths. The Kielce region was not overflooded until the Upper Tremadoc after a break due Ito the old Caledonian (Sandomirian) phase. In this area, the deposits formed under shallow-sea conditions, with local emersions at the dose of the Tremadoc and of the Ashgill.

Some remarks on the ontogenetic development and sexual dimorphism in the Ammonoidea

Abstract: The writer discusses the problem, suggested by some authors, of interpretation of small forms in Ammonoidea as neotenic ones. The classical conception of neoteny is connected with presence of a larval stage which in Ammonoidea was very tiny. It therefore appears that small forms in Ammonoidea are highly advanced in their ontogenetic development as compared with a larval stage of this group. Numerous examples are also known of the dimorphism, the large and small forms in which differ in their dimensions very indistinctly. The latter facts contradict a conception of a neotectonic character of small forms. The writer discusses also the problem of systematics of the Ammonoidea against the background of the commonly being accepted theory of sexual dimorphism.

A•flisch/littoral succession in the Sudetic Upper Cretaceous

Abstract: The Coniacian marine sediments of the·Nysa graben (Idzikow Beds) are divided into the lower member consisting of altering claystone and sandstone layers, and the upper member comprising sandstones and conglomerates. Sedimentary features of the lower member, especially the type of bedding planes, sole markings, trace fossils, succession of structures and textures indicate that the principal agents controlling the sedimentation were subaqueous mass movements and turbidity currents. The upper member·shows the features of shallow water sediments, including medium- and large-scale cross-bedded units and numerous fossils, i.a. shallow water lamellibranchs, gastropods and decapods The sequence and distribution of facies within the Idzikow Beds point to a consistent development of the sedimentary basin in which were laid down in succession: distal turbidites, proximal turbidites, shallow water and high-energy littoral deposits. Such .a development was closely related and synchronous to the uprising movements in the fore-Sudetic land and in the Śnieznik and Klodzko massifs. The tectonic uprising movements which embraced parts of these massifs were coming closer and closer to the Nysa graben, and caused migration of the fades and finally led to the regression of the sea.

Lower Tortonian scaphopods from the Korytnica clays, southern slopes of the Holy Cross Mts

Abstract: An assemblage of scaphopods, the richest in Poland, occurs in the Lower Tortonian Pleurotoma clays outcropped in the environs of Korytnica on southern slopes of the Holy Cross Mts. All in all, this assemblage includes thirteen species, that is, four hitherto known from this locality and nine others, four of which are here described as new ones. This is one of the richest assemblages of these molluscs in the Miocene of Europe and in the number of species yields only to some Miocene localities of Italy. Dentalium (Antalis) fossile Schroeter and Fustiaria ( Episiphon ) miocaenica (Boettger) are most frequent species at Korytnica. The present paper contains paleontological descriptions of particular species, along with characteristics of their life environment. This assemblage has also been compared with those from other Miocene localities and a considerable similarity has been found to the scaphopods of the Vienna Basin, of the environs of Pleven, Bulgaria, and of the environs of Kostej, Transylvania.

Middle Triassic (Muschelkalk) conodonts from the SW margin of the Holy Cross Mts

Abstract: Twenty two species and subspecies of the conodonts have been recognized in the Middle Triassic (Muschelkalk) of the SW margin of the Holy Cross Mts. Basing on the conodonts, the Upper Muschelkalk of the region has been correlated with the Cetratites Beds of Germany. In the Lower Muschelkalk of the region, the species Paragondolella navicula (Huckriede) and P. excelsa Mosher,. characteristic of the Alpine province, have been stated.

The brachiopods from the Kadzielnia limestone (Frasnian) of the Holy Cross Mts

Abstract: The lowermost part of the Kadzielnia limestone contains a very differentiated brachiopod·fauna, usually occurring in gregariously crowded monospecific clusters. The brachiopods constitute the richest faunistic assemblage after the stromatoporoids, tabulate and rugose corals. Twenty one brachiopod species are stated, one new; some of them are not assigned to definite species owing to the unsatisfactory stats of preservation and/or insufficient number of specimens. Stratigraphically, the brachiopods all belong to the Frasnian species and indicate the lowermost part of the Kadzielnia limestone to be of Upper Devonian age.

The Lower Devonian in the western part of the Klonóm Belt (Holy Cross Mts) Part I - Upper Emsian

Abstract: A biostratigraphic and lithological description is given of the Upper Emsian deposits (Rhine magnafacies) from the western part of the Klonow Belt .in the northern margin of the Holy Cross Mts. A stratigraphic diagram has been worked out for these deposits on the basis of the brachiopod and lamellibranch fauna, and compared with the Upper Harz profile. Paleontological descriptions have also been given of such brachiopod and lamellibranch species which represent taxonomically doubtful or endemic forms. The chapter on lithology contains an analysis off ,the transport directions and the origin of clastic material. The present paper represents part I·of a monograph on the Lower Devonian deposits in the Klonow Belt.

Lower Cenomanian trace fossils and transgressive deposits in the Cracow Upland

Abstract: Lower Cenomanian abrasion surfaces of the Cracow Upland abound in borrings of lithophags such as sponges, polychaetes, pelecypods and echinoids. Of many trace fossils occurring in these surfaces, the form Pseudopolydorites radwanskii ichnogen. et ichnosp. nov., attributable to polychaetes, has been established as a new one.

Tektonika jednostki Bobrowca w Tatrach Zachodnich

Abstract: Tectonics of the Bobrowiec unit in the western Tatra Mts The tectonics of the lower sub-Tatric (Križna) nappe in the western part ,of the Tatra Mts is characterized. This part of the Križna nappe consists of a separate tectonic unit of Mt. Bobrowiec, with monoclinal structure, non-folded but sliced and divided into separate blocks by transversal faulting. In the Polish text of the paper, the structure of tectonic elements under- and overlying the Bobrowiec unit and the relations of the latter to adjoining sub-Tatric units, are also discussed.

A contribution to the knowledge of Upper Devonian ammonoids from the Holy Cross•Mts

Abstract: The paper comprises a short review of previous paleontological studies on the Upper Devonian ammonoids from the Holy Cross Mts and so)me remarks concerning their occurrence and state of preservation. Two species, hitherto unknown in Poland, found in Frasnian deposits in the vicinity of Łagow, Manticoceras bickense (Wedekind) and M. inversum Wedekind, are described. In the species Manticoceras bickense (Wedekind)sexual dimorphism has been recognized.

A polychaete jaw apparatus and some scolecodonts from the Polish Middle Triassic

Abstract: A polychaete jaw apparatus, composed of joined carriers, two MI and two MII, 13 isolated elements of other jaw apparatus and a form with an unknown taxonomic position have been described from the Middle Triassic·(Muschelkalk) of Southern Poland.

Miocene vertebrate faunas from Przeworno (Lower Silesia) and their geological setting

Abstract: The preliminary results of geological and paleontological studies on newly found vertebrate faunas at Przeworno (Lower Silesia, Southwestern Poland) are presented. The older assemblage (Przeworno I) occurs in -clay infilling of horizontal karst passage. This assemblage corresponds to swampy rain forest faunas and is similar in age to fauna of La Romieu (Upper Burdigalian). The younger assemblage, found in vertical fissure filled up from surface, is represented by fauna of woods of the park type, pointing to sawanna-like climate, and corresponding to younger Vindobonian faunas in age. In the paleontological part the six genera of mammals, including one new species ,of rhinoceros - Aceratherium silesiacum sp. n. Sulimski, are described. Moreover, a fragment of the cave, with siliceous flowstones, is described.

Megalodon limestones in the sub-tatric Rhaetian of the Tatra Mts

Abstract: he Megalodom limestones of the sub-tatric Rhaetian, Tatra Mts, are composed mostly of the shells of Canchodus infraliasicus Stoppani The preservation and, ontogenetic variability of these megaIodons as well as the sedimentary environment and stratigraphical setting of the megalodon-bearing deposits are discussed.

Stratygrafia osadów czwartorzędowych w dolinie środkowej Nidy

Abstract: Quaternary deposits of the middle Nida valley The investigated area of the middle course of the Nida valley was covered in the, Pleistocene only by the ice sheet of the Cracovian glaciation (Mindel - GII), and during ,the other glaciations (Gunz - GI, Riss - GIII, and Wurm - GIV) it was situated Within a zone of periglacial processes. Among the recognized alluvial series, four represent subsequent interglacial (Cromerian – JI/II, Holstein – JII/III and Eemian – JIII/IV) or interstadial (Younger Dryas) periods, and the fifth one represents recent fluvial deposits.

Ordowik wschodniej części obniżenia podlaskiego

Abstract: The Ordovician of the eastern part of the Podlasie depression Results of new boreholes from the eastern part of the Podlasie depression, confirm the previous suggestion on a gradual transgression of the Ordovician sea, proceeding from the Bialowieza·region, where it has·persisted since the Cambrian period. Ordovician sediments (Upper Arenig-Middle Caradoc) pierced in new boreholes are developed in carbonate facies, the stratigraphic subdivision·of which is based on brachiopods, conodonts and trilobites;

Upper Tithonian brachiopods Camerothyris wahlenbergi (Zejszner) from the Pieniny Klippen Belt

Abstract: A rich assemblage of brachiopods, in which the species Camerothyris wahlenbergi (Zejszner) predominates, occurs in the brachiopod limestone of the Upper Tithonian in the Pieniny Klippen Belt. The taxonomic position of this species has been established, along with the presentation of detailed morphological studies.

The Middle Cambrian of the Klimontów anticlinorium Holy Cross Mts

Abstract: The geological structure of the Klimontow anticlinorium is composed of Lower Cambrian rocks and also of sands tones of hitherto uncertain age. On the basis of newly found fossils arid of lithological and structural criteria these sand-stones are assigned to the Middle Cambrian. The analysis of stratigraphy, lithology and tectonics of the Cambrian deposits in the Holy Cross Mts shows, contrary to previous opinions, that no orogenic phase was marked here at the Middle/Upper Cambrian boundary.

Wyspa lessowa Oblęgorka koło Kielc

Abstract: Loess deposits at Oblegorek near Kielce (Holy Cross Mts) The loesses, occurring on eastern slopes of main elevations of the Oblegorek hills in the Holy Cross Mts; exhibit distinct bipartity and represent a period of accumulation of the so-called younger loesses (Wurm). They were deposited by westerly winds, whereas outcrops of Bunter sandstones, weathering in periglacial conditions, supplied an abundant amount of dust and were the main source of the loess material.