Gogolin Formation

System Series Stage Age (Ma) European lithostratigraphy
Jurassic Lower Hettangian younger Lias
Triassic Upper Rhaetian 199.6–203.6
Keuper
Norian 203.6–216.5
Carnian 216.5–228.7
Middle Ladinian 228.7–237.0
Muschelkalk
Anisian 237.0–245.9
Bunter or Buntsandstein
Lower Olenekian 245.9–249.5
Induan 249.5–251.0
Permian Lopingian Changhsingian older
Zechstein
Major lithostratigraphic units of northwest Europe with the ICS's geologic timescale of the Triassic.[1]

Gogolin Formation - Triassic geologic formation, hitherto named the Gogolin Beds,[2][3] is the lowermost lithostratigraphical unit of the Lower Muschelkalk in the Silesian-Cracow Upland (S Poland, Central Europe), underlain by the Upper Buntsandstein (Lower Triassic) carbonates and overlain by the Górażdże Formation (Middle Triassic) carbonates.[4][5]

Name

Historical name coming from Gogolin, a small town in south Poland, where the Gogolin Formation was described for the first time, and where the main stratotypes have been exposed (see section Stratotypes).[4]

Gogolin
Town
Gogolin
Coordinates: 50°29′N 18°02′E / 50.483°N 18.033°E / 50.483; 18.033
Country Poland
Voivodeship Opole
County Krapkowice
Gmina Gogolin

Age

The Late Olenekian or Early Aegean (Anisian) to Pelsonian (Anisian),.[6][7]

Rocks

The formation is built of various carbonates which were deposited on a carbonate ramp.[4][8]

The lowermost part of the Gogolin Formation - Gogolin, S Poland

Subdivision

This Formation has recently been divided into four members, six beds, and two horizons:[4][5]

  1. Zakrzów Crinoidal Limestone Member, which includes: a) Krapkowice Pelitic Limestone Bed - thin-bedded, wavy bedded and marly micritic limestones, b) Dąbrówka Bioclastic Limestone Bed - thick- to medium-bedded, cross-bedded crinoidal limestones, c) Podbór Bioclastic Limestone Bed - thin- to medium-bedded, graded, horizontally and cross-bedded bioclastic limestones and wavy-bedded micritic limestones;
  2. The Skała Marl Member - marls interbedded with micritic and bioclastic limestones; the lowermost part of this member is locally built of broken-up limestone beds and lumps which are covered by an intraformational conglomerate with small intraclasts - they are divided as Kocina Intraformational Conglomerate Bed;
  3. The Emilówka Cellular Limestone Member, which includes: a) Karłubiec Bioclastic Limestone Bed - massive, cross-bedded, thin- to medium-bedded bioclastic and micritic limestones, b) Otmęt Marly Limestone Bed - strongly porous, thin-bedded marly limestones that are, in fact, dedolomitized dolomites;
  4. Odrowąż marly limestone horizon - marls, thin- to medium-bedded, graded, cross-bedded and horizontally bedded bioclastic limestones and thin layers of platy and wavy bedded micritic limestones;
  5. Malnia limestone horizon - thin- to medium-bedded, graded, horizontally and cross-bedded bioclastic limestones, thin-bedded, platy and wavy-bedded micritic limestones;
  6. Ligota Hill Wavy-Bedded Limestone Member - wavy-bedded and crumpled micritic limestones intercalated with medium- to thin-bedded, graded,cross- and horizontally bedded, bioclastic limestones.

Stratotypes

Stratotypes are located at Gogolin and its vicinity, Błotnica Strzelecka and Ligota Dolna (southern Poland).[4][5]

References

  1. ↑ Gradstein, F.M.; Ogg, J.G.; Smith, A.G. (2005), A Geologic Time Scale 2004, Cambridge University Press, ISBN 9780521786737
  2. ↑ Assmann P., 1913 - Beitrag zur Kenntniss der Stratigraphie des oberschlesischen Muschelkalks. Jb. Preuss. Geol. Landesanst., 34: 658 - 671, Berlin.
  3. ↑ Assmann P., 1944. Die Stratigraphie der oberschlesischen Trias. Teil 2: Der Muschelkalk. Abhandlungen des Reichsamtes für Bodenforschung, Neue Folge, 208: 1–124
  4. 1 2 3 4 5 Kowal-Linka M. 2008. Formalizacja litostratygrafii formacji gogolińskiej (trias środkowy) na Śląsku Opolskim. Geologos 14 (2): 125–161,
  5. 1 2 3 Kowal-Linka M. 2009. Nowe jednostki litostratygraficzne w randze warstw w obrębie formacji gogolińskiej (trias środkowy) na Śląsku Opolskim. Geologia 35 (2): 153-174
  6. ↑ Nawrocki J. & Szulc J., 2000. The Middle Triassic magnetostratigraphy from the Peri-Tethys basin in Poland. Earth and Planetary Science Letters, 182: 77–92
  7. ↑ Zawidzka K., 1975. Conodont stratigraphy and sedimentary environment of the Muschelkalk in Upper Silesia. Acta Geologica Polonica, 25: 217–256
  8. ↑ Kowal-Linka, M., Stawikowski, W., 2013. Garnet and tourmaline as provenance indicators of terrigenous material in epicontinental carbonates (Middle Triassic, S Poland), 291: 27–47

Literature

External links

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