Conodonts and holothurian sclerites from the Upper Permian and Triassic of the Bükk Mountains (North Hungary)
5 Upper Permian samples from the Bükk mountains have yielded holothurian sclerites. Theelia dzhulfaensis MOSTLER et RAHIMI-YAZD, in the Permian hitherto known only from the Iranian and Soviet Transcaucasia, was found for the first time in the European Upper Permian. 2 Upper Permian samples of the sa...
Elmentve itt :
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| Dokumentumtípus: | Cikk |
| Megjelent: |
University of Szeged, Department of Mineralogy, Geochemistry and Petrology
Szeged
1977
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| Sorozat: | Acta mineralogica-petrographica
23 No. 1 |
| Kulcsszavak: | Kőzettan, Ásványtan, Földtan |
| Tárgyszavak: | |
| Online Access: | http://acta.bibl.u-szeged.hu/24622 |
| Tartalmi kivonat: | 5 Upper Permian samples from the Bükk mountains have yielded holothurian sclerites. Theelia dzhulfaensis MOSTLER et RAHIMI-YAZD, in the Permian hitherto known only from the Iranian and Soviet Transcaucasia, was found for the first time in the European Upper Permian. 2 Upper Permian samples of the same region have yielded a rather rich conodont fauna with Anchinathodus minutus (ELLISON) and Stepanovites dobruskinae KOZUR et PJATAKOVA. The age of this fauna was determined to be Upper Baisalian (Dzhulfian). 8 samples have yielded Triassic conodonts. By the aid of these conodonts the age of the cherty limestones of Kiseged could be determined as Middle Sevatian. A Lower to Middle Norian age could be determined for the gray limestones with nodular cherts that overlay the "sericitic shale fades". These cherty limestones were hitherto assigned to the Upper Ladinian (Cordevolian) and Carnian. Therefore the "sericitic shale complex" has not ended in the Middle Ladinian, as hitherto assumed, but it has continued "up to the Upper Carnian. A sample immediately above the last shales of the "sericitic shale complex" have yielded an Upper Tuvalian to lowermost Norian conodont fauna. A Julian (Middle Carnian) age could be determined for parts of the "sericitic shale complex" by conodont association of Gondolella polygnathiformis BUDUROV et STEFANOV, Gladigondolella tethydis (HUCKRIEDE) an d Metapolygnathus cf. misiki KOZUR et MOCK. Th e "sericitic shale complex" of the Bükk mountains has therefore the same age as the shaly complex with radiolarites and diabases of the Meliata group. A short summary about the development of the Middle and Upper Triassic in the Bükk mountains and the Meliata group is presented. The Triassic beds of the Bükk mountains as well as of the Meliata group were deposited in a single highly mobile augeosynclinal belt. After the flysch deposition of Carnian age the deep sea basin was uplifted without any folding and metamorphosis. The Triassic of the Bükk mountains and the Meliata group is very similar to the Dinaric and South Alpine ones and it belongs to the Dinaric faunal province. The austroalpine (North Alpine) Triassic of the Silica nappe must be overthrusted from the north to south over the Dinaric (South Alpine) Triassic of the Meliata group. This is indicated by lithological, tectonical and paleontological evidences. |
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| Terjedelem/Fizikai jellemzők: | 109-126 |
| ISSN: | 0365-8066 |