Science and earth science

Acta Geologica Polonica

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Acta Geologica Polonica | 2024 | vol. 74 | No 3

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Abstract

Abundant well-preserved isolated asteroid ossicles are described from the Carnian Stage (Julian Substage) Cassian Formation of South Tyrol, northeast Italy. Detailed study of articulation surfaces and external sculpture, aided by comparison with articulated specimens of related taxa from the German Muschelkalk (Anisian– Ladinian) indicates that three species are present, here assigned to Cortinaster papillifera gen. et sp. nov. (type species), Cortinaster zardinii gen. et sp. nov., and Soleaaster thuyi gen. et sp. nov. It is concluded that all belong to the Triassic asteroid order Trichasteropsida Blake, 1987, but they display remarkable variation in the morphology of the adambulacral ossicles which, in two of the species, possess characters comparable to those of some Late Palaeozoic asteroids. The third species has adambulacral structure essentially similar to taxa of the post-Triassic order Valvatida Perrier, 1884. The diversity of Triassic asteroids is reviewed, and a new genus, Hagdornaster gen. nov. with the type species H. bieletorum (Blake and Hagdorn, 2003), is described from the German Muschelkalk.
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Authors and Affiliations

Andrew Scott Gale
1 2

  1. School of the Environment, Geography and Geosciences, University of Portsmouth, Burnaby Building,Burnaby Road, Portsmouth PO13QL, UK
  2. Department of Earth Sciences, The Natural History Museum, Cromwell Road, London SW75BD, UK
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Abstract

Several specimens derived from the Missourian (Pennsylvanian) deposits of the Glass Mountains (SW Texas, USA) are identified as Yuanophylloides Fomichev, 1953. Some species that earlier authors included in the genera Campophyllum Milne-Edwards and Haime, 1852, Bothrophyllum Trautschold, 1879, and Neokoninckophyllum Fomichev, 1939 are re-identified as belonging to Yuanophylloides. In addition to the type genus, a new subgenus Patulaxis of Yuanophylloides with the type species Y. (P.) molestus sp. nov. and the new species Y. (P.) parcus and Y. (P.) laxus are introduced. Re-identification of the upper Serpukhovian Campophyllum kansasense Miller and Gurley, 1893 as Yuanophylloides renders untenable the origin of that genus in the Donets Basin. The circum- Laurussia warm current is suggested as having carried Yuanophylloides larvae from the North American superprovince to the Paleotethyan superprovince. This genus supplements the group of genera suggested by Fedorowski (2023) as having originated in the North American superprovince and migrating to the Paleotethyan superprovince. Together, these genera demonstrate the importance of taxonomic investigation to establish paleobiogeography as a constrain on global (i.e., tectonic scale) environmental reconstructions.
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Authors and Affiliations

Jerzy Fedorowski
1
Edward Chwieduk
1

  1. Institute of Geology, Adam Mickiewicz University, Krygowskiego 12, 61-680 Poznań, Poland
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Abstract

The article describes assemblages of ore minerals of the size of tenths to a few millimetres, which occurred in small quartz veinlets and nests in 10 previously unknown sites. This mineralization was found in the north-eastern part of the Karkonosze granitoid pluton at the southern slope of the Wysoki Grzbiet (High Ridge) in Izera Mts. The studies concerned mainly 18 Sb minerals: antimony, Sb-bearing domeykite, getchellite, stibnite, willyamite, berthierite, boulangerite, bournonite, chalcostibite, falkmanite, famatinite, geocronite, robinsonite, semseyite, tetrahedrite-(Fe), cervantite, kermesite and schafarzikite; seven of them have been found in Poland for the first time. The parageneses, morphological features, XRD data and chemical composition of the Sb minerals are presented. Fluid inclusions in quartz adhering to the Sb minerals had generally homogenization temperature (Th) 108–341°C and total salinity ΣS 4.6–10.1 wt. %. The inclusion fluids were of the NaCO3- Ca(HCO3)2-NaCl-KCl type with minor F and S, and occasional CO2 presence. The parent granitoid contains Sb in trace amounts (0.18–0.36 ppm) and the rock was possibly a source of this (and other) element(s) for the ore minerals. Migration of meso-epithermal solutions with Sb etc. was probably stimulated by local reduction of pressure during the formation of fissures and cracks in granite, next filled by quartz with ore minerals. The features of the historical process of the recognition of Sb ores and previous studies of the minerals investigated in this research are included in the presentation and discussion. Special attention was paid to the listing of the occurreences of Sb minerals in Lower Silesia with appropriate references.
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Authors and Affiliations

Andrzej Kozłowski
1
Agnieszka Marcinowska
1 2

  1. University of Warsaw, Faculty of Geology, Żwirki i Wigury 93, 02-089 Warszawa, Poland
  2. University of Gdańsk, Faculty of Oceanography and Geography, Piłsudskiego 46, 81-378 Gdynia, Poland
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Abstract

Amphibians, due to their ecological plasticity, are some of the best environmental indicators among vertebrates nowadays and in the fossil record. One such example is the extinct family Metoposauridae Watson, 1919. Metoposaurids were abundant amphibians in Late Triassic Pangea. The remains of the genus Metoposaurus Lydekker, 1890 have been found in Germany, Poland and Portugal with three species, respectively Metoposaurus diagnosticus (Meyer, 1842), Metoposaurus krasiejowensis Sulej, 2002 and Metoposaurus algarvensis Brusatte, Butler, Mateus and Steyer, 2015. Since the majority of studies concern the skull and the pectoral girdle, in this work M. krasiejowensis has been analysed through a morphometric study of the mandible. This was made possible by the high abundance of fossils found in Krasiejów (SW Poland) in the last 20 years. The characteristics considered are the morphology of the mandible corpus and its most relevant bones, the adaptation to stress during biting and the dermal ornamentation. The results reveal that not only do these characters have great intraspecific variability, but that at least two groups of a single population of M. krasiejowensis probably had different lifestyles, one more aquatic and the other more terrestrial.
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Authors and Affiliations

Luca F. Quarto
1
Mateusz Antczak
2

  1. University of Opole, European Centre of Palaeontology, Oleska 48, 45-052 Opole, Poland
  2. University of Opole, Institute of Biology, Oleska 22, 45-052 Opole, Poland
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Abstract

Two new brachiopod–brachiopod symbiotic overgrowths have been discovered from the Kukruse Regional Stage (Sandbian, Ordovician) of Estonia. Both the Philhedra rivulosa–Porambonites sp. and the Petrocrania sp.–Porambonites sp. overgrowths were beneficial to the encrusting craniid and might have been slightly harmful to the host brachiopod. The craniids could have been facultative kleptoparasites. Our data show that craniids significantly preferred the smooth shells of Porambonites sp. over the coarsely ribbed shells of Platystrophia sp. and the moderately ribbed shells of Cyrtonotella sp. and Glossorthis sp. This suggests that, at least against craniids, having strong ribs could have been a successful antifouling strategy.
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Authors and Affiliations

Olev Vinn
1
Mare Isakar
2
Mansour I. Almansour
3
Saleh Al Farraj
3
Magdy El Hedeny
4

  1. Department of Geology, University of Tartu, Ravila 14A, 50411 Tartu, Estonia
  2. Natural History Museum, University of Tartu, Vanemuise 46, 51003 Tartu, Estonia
  3. College of Science, King Saud University, Kingdom of Saudi Arabia
  4. Geology Department, Faculty of Science, Alexandria University, Egypt
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Abstract

Titanite, an accessory mineral of pegmatite related to aplogranite, was identified in the Szklarska Poręba Huta quarry within the Karkonosze granite massif in Lower Silesia, Poland. It formed during pegmatitic to hydrothermal stages. Besides the isovalent substitution Sn → Ti, the chemical composition of the mineral is characterized by three coupled substitutions: (1) (Al, Fe, Sc)3+ + (OH, F)- → YTi + ZO, (2) XREE3+ + Y(Al, Fe, Sc)3+X)Ca2+ + YTi4+, and (3) (Al, Fe, Sc)3+ + (Nb, Ta)5+ → 2YTi. These substitutions are strongly dependent on the composition of the magma in terms of its Al2O3/TiO2 activity ratio, with the first one also influenced by the H2O/HF fugacity ratio. Fluorine, which induced the most common substitution (1), had its source in high-temperature F-bearing fluids released from rocks of the metamorphic envelope adjacent to the intruding granite. These fluids mobilized and transported various rock components (Sc, REE, Nb, Ta, etc.) among others in the form of fluoride complexes, enriching the aplogranite magma with some metallic elements. The substitution of Sn for Ti developed with decreasing temperature to the extent that in thin ore-mineralized quartz veins cutting aplogranite, titanite reaches Sn-bearing compositions up to the prevalence of Sn corresponding to malayaite.
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Authors and Affiliations

Karolina Mil
1
Bożena Gołębiowska
1
Adam Pieczka
1
Adam Włodek
1

  1. Department of Mineralogy, Petrography and Geochemistry, AGH University of Krakow,Mickiewicza 30, 30-059 Kraków, Poland
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Abstract

Palynofacies and palynological investigations conducted on the Neogene–Quaternary succession from the NDO B-1 well, located in the offshore Nile Delta, Egypt, in the Eastern Mediterranean, suggest generally shallow marine (neritic) conditions. These environments are manifested by the overall palynofacies composition and the occurrence of dinoflagellate cysts (e.g., Spiniferites spp., Lingulodinium spp., Hystrichokolpoma spp., Homotryblium spp. and Selenopemphix spp.). Neritic environments are suggested for the lower and middle Miocene Sidi Salim, and the Pliocene to Pleistocene upper Kafr El Sheikh, El Wastani and Mit Ghamr formations, while shallower, coastal to inner neritic settings were interpreted for the late Miocene (Qawasim and Rosetta formations) and early Pliocene (Abu Madi and lower Kafr El Sheikh formations). Anoxic conditions existed during the deposition of the studied well succession, which can be seen from the occurrence of imprints of pyrite crystals and some types of oxygen-sensitive dinoflagellate cysts. The palynofacies fluctuated repeatedly between Amorphous Organic Matter (AOM)-dominated and phytoclast-dominated intervals, of kerogen types II and III, respectively. The spore coloration index (SCI) of indigenous thin-walled palynomorphs confirms thermally mature sediments, generative of dry gas and wet gas/condensates. Reworking during the deposition of the upper Sidi Salim, Qawasim and Rosetta formations is inferred from the occurrence of Cretaceous dinoflagellate cysts and pollen.
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Authors and Affiliations

Magdy S. Mahmoud
1
Amr S. Deaf
1
Mennat-Allah T. El Hussieny
1

  1. Department of Geology, Faculty of Science, Assiut University, Assiut 71516, Egypt
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Abstract

The strongly bioturbated Middle Triassic (Anisian) limestones, referred to as vermicular limestone, are the dominant lithology of the Hisban Formation in Jordan. This limestone exhibits the monotonous Oravaichnium– Planolites ichnofabrics, which are known and common in the northern Peri-Tethys and the Germanic Basin. The most abundant and widespread trace fossil here is Oravaichnium carinatum, which is produced by bivalves. Specimens of O. carinatum from the Hisban Formation are typically strongly elongated in the vertical axis and have a smooth surface, whereas specimens from the Germanic Basin mainly have a pear-shaped cross-section. Nevertheless, both morphologies and transitional morphotypes between these ichnospecies are present in both areas. The difficulty in distinguishing between Oravaichnium and Planolites causes the intense bioturbation by bivalves to be underestimated. The wide occurrence of the Oravaichnium ichnofabric in the northern and southern Peri-Tethys suggests that small burrowing bivalves played a significant role in the colonization and infaunalization during the long-term recovery of the benthos after the Permian–Triassic crisis. They experienced intense development during the Middle Triassic, when they were responsible for extensive bioturbation.
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Authors and Affiliations

Michał Stachacz
1
Alfred Uchman
1
Piotr Jaglarz
1
Abdalla Abu Hamad
2
Ikhlas Al-Hejoj
2
Habes Al-Mashakbeh
3

  1. Institute of Geological Sciences, Jagiellonian University, Gronostajowa 3a, 30-387 Kraków, Poland
  2. Environmental and Applied Geology Department, The University of Jordan, 11942 Amman, Jordan
  3. Applied Earth and Environmental Sciences Department, Faculty of Earth and Environmental Sciences, Al al-Bayt University, P.O.BOX 130040, 25113 Mafraq, Jordan
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Abstract

The Order Clupeiformes Bleeker, 1859 comprises herrings, anchovies, sprats, sardines, and shads. The fossil record of this group is rich within the Paratethys. Here we describe a new clupeiform fish, †Sanalosa janulosa gen. et sp. nov., from the Lower Oligocene of the Carpathian Basin, Poland. This new genus has a unique combination of characters (lower jaw articulation located under the posterior part of the orbit; abdominal scutes well developed with 3 to 5 in the gular region, 11–14 prepelvic scutes associated with ribs, 11–12 postpelvic scutes; several striae on the frontals; an opercle with 6–12 thin radial ridges; a horizontal ramus of the preopercle shorter than the vertical one; 42–44 vertebrae; 8–10 supraneurals; a dorsal fin with 18–22 rays, and an anal fin with 21–23 rays), supporting recognition of a new genus and species within the Family Alosidae Svetovidov, 1952. Similarities and differences between fossil and extant genera of the Clupeiformes are discussed to shed more light on their relationship. Moreover, the palaeobiogeography, diversity and distribution of Oligocene clupeiform fishes in the Paratethys are presented and discussed.
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Authors and Affiliations

Malgorzata Bienkowska-Wasiluk
1
Mateusz Granica
2
Oleksandr Kovalchuk
3

  1. University of Warsaw, Faculty of Geology, Żwirki i Wigury 93, 02-089 Warszawa, Poland
  2. University of Wrocław, Faculty of Biological Sciences, Department of Palaeozoology,Sienkiewicza 21, 50-335 Wrocław, Poland
  3. National Museum of Natural History of the National Academy of Sciences of Ukraine, Departmentof Palaeontology, Bohdana Khmelnytskoho 15, 01054 Kyiv, Ukraine

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