Browsing by Subject "Triassic"

Now showing 1 - 7 of 7

Access status: Open Access ,
Early Triassic conodonts in Western Tethys
(Wydawnictwa AGH, 2023) Kolar-Jurkovšek, Tea
Access status: Open Access ,
Encrinus cf. liliiformis Lamarck, 1801, the youngest crinoid from the Polish Muschelkalk (Middle Triassic)
(Wydawnictwa AGH, 2005) Salamon, Mariusz A.
The paper reports first undoubted occurrence of crinoid species Encrinus cf. liliiformis from the Upper Muschelkalk (Middle Triassic) of Poland. Contrary to previous records, it has been found the species occurs only in Upper Muschelkalk sediments. On the basis of known evidence, it seems that E. cf. liliiformis migrated east to west through the reactivated East-Carpathian Gate.
Access status: Restricted ,
Mineralizacja $Fe – Zn – Pb$ w utworach triasu w nadkładzie złoża Myszków
(Data obrony: 2016-07-05) Kojder, Szymon
Wydział Geologii, Geofizyki i Ochrony Środowiska
Porfirowe złoże $Mo–Cu–W$ w Myszkowie znajduje się w południowej Polsce, w pobliżu strefy tektonicznej Kraków – Lubliniec. Nadkład złoża zbudowany jest przede wszystkim z utworów triasu, a jego miąższość wynosi około 160 m. Badania skał nadkładu przeprowadzono na rdzeniach wiertniczych z otworów MS-1, MS-2, MS-3 i MS-6, z których pobrano 27 próbek. W skałach triasu stwierdzono utwory wapienia muszlowego, z których wyróżniono poziomy dolomitu diploporowego, dolomitu kruszconośnego i wapienia gogolińskiego. Podczas badań makroskopowych i mikroskopowych próbek w dolomicie diploporowym i kruszconośnym stwierdzono występowanie pirytu, markasytu, sfalerytu i galeny. Mineralizacja kruszcowa jest śladowa i występuje przede wszystkim w formie rozproszonej, jednak w dolomicie kruszconośnym stwierdzono szczotki krystaliczne markasytu.
Access status: Open Access ,
Nowe jednostki litostratygraficzne w randze warstw w obrębie formacji gogolińskiej (trias środkowy) na Śląsku Opolskim
(Wydawnictwa AGH, 2009) Kowal-Linka, Monika
The Zakrzów Crinoidal Limestone Member is subdivided into the three subordinate units: the Krapkowice Pelitic Limestone Bed built of thin-bedded, wavy-bedded and crumpled marly pelitic limestones, the Dąbrówka Bioclastic Limestone Bed consisting of thick- to medium-bedded, cross-bedded bioclastic limestones (crinoidal), the Podbór Bioclastic Limestone Bed built of thin- to medium-bedded bioclastic limestones, pelitic limestones and intraformational conglomerates. The lower part of the Skała Marl Member consisting locally of the intraformational conglomerate with big intraclasts covered by the intraformational conglomerate with small intraclasts is designed as the Kocina Intraformational Conglomerate Bed. The Emilówka Cellular Limestone Member is subdivided into the two subordinate units: the Karłubiec Bioclastic Limestone Bed built of thin-to medium-bedded bioclastic and pelitic limestones and the Otmęt Marly Limestone Bed consisting of strongly porous, thin-bedded marly limestones (dedolomites).
Access status: Open Access ,
Permian to Triassic paleokarst of the Świętokrzyskie (Holy Cross) Mts, central Poland
(Wydawnictwa AGH, 2007) Urban, Jan
This paper presents classification of the Permian and Triassic paleokarst forms in the Świętokrzyskie Mts, systematic description of the groups of forms and their fillings as well as conclusions concerning environmental conditions of their development. Four groups were distinguished among paleokarst forms developed before the deposition of the Buntsandstein whereas five ones developed during the Buntsandstein deposition (proceeding diachronically) and/or the Middle Triassic time. The Permian-Triassic paleokarst was conditioned by the Variscan tectonic movements and up-lift as well as subsequent formation of the Danish-Polish Trough. The Permian karst developed in the area of mountainous morphology and were often connected with hydrothermal processes. The Triassic karst formed due to tectonic activity stimulating morphological rejuvenation of the region. Wide and low passages representing one of the Triassic paleokarst group presumably formed in fresh and sea waters mixing zone.
Access status: Open Access ,
Phanerozoic paleoenvironment and paleolithofacies maps. Mesozoic
(Wydawnictwa AGH, 2007) Golonka, Jan
The paper presents the detailed plate tectonic, paleogeographic, paleoenvironment and paleolithofacies maps for eight Mesozoic time intervals. The most significant Triassic convergent event was the Indosinian orogeny, the collision of Indochina and Indonesia with South China, and consolidation of Chinese blocks. The continued northward drift of the Cimmerian continents corresponded with the closing of the Paleotethys and opening of the Neotethys Ocean. Plate tectonic activity around the Triassic-Jurassic boundary caused paleogeographic and paleoclimatic change, which triggered mass extinction. The rifting in the Atlantic during the Early Jurassic was followed by Middle and Late Jurassic spreading. Cretaceous was the time of the farther spreading of Central Atlantic, as well as origin of South Atlantic and Indian oceans. These events were leading to the maximum dispersion of continents during Phanerozoic times.
Access status: Open Access ,
Wapień muszlowy w zagłębiu Dąbrowskiem
(Drukarnia St. Święcki (Dąbrowa Górnicza), 1910) Bohdanowicz, Karol