Exscursions

PRE-CONFERENCE TRIP: Silurian mesophotic environments of Gotland.

Presentation: The aim of the trip is to show the oldest Mesophotic Coral Ecosystems (MCEs) known so far. The trip will Focus on „blue mesophotic” (deep water) Wenlock coral communities, but we will also visit younger, potentially „brown mesophotic” ecosystems. Besides MCEs the participants will have the possibility to visit some classical outcrops of shallow water coral-stromatoporid ecosystems.

Preliminary programme (5 days fieldtrip):
September 5th – Meeting at the Nynashamn Ferry terminal, travel to Visby
September 6th – MCEs of Lower Visby Beds in Ygne-Hogklint, Hogklint reefs, Visby Walk
September 7th – MCEs of L. Visby B., Ireviken. Raukars and shallow water bioconstructions (Hangvar Fm.), Farö Island.
September 8th – Brown MCEs of Eke Fm., raukars and bioconstructions of Burgsvik Fm.
September 9th – ferry to Nynashamn, flight to Warsaw.

Leaders: Mikołaj K. Zapalski (University of Warsaw), Błażej Berkowski, Jan J. Król (Adam Mickiewicz University, Poznań).

MID-CONFERENCE TRIP: Exceptionally preserved Late Jurassic ecosystem of Owadów-Brzezinki, Central Poland).
The cost of mid-conference trip will be included with the registration fee.

Presentation:

The Owadów-Brzezinki palaeontological site located near Sławno in the NW margin of the Holy Cross Mts is one of the most important recent palaeontological discoveries in Poland. The palaeontological sites of Owadów-Brzezinki is referred to as a new “taphonomic window” of the Late Jurassic, providing insights about the evolution of life on Earth in the palaeogeographical and palaeoenvironmental context. Unusually well preserved fossils of marine and terrestrial organisms of Late Jurassic (Tithonian) age, many of them new to science, provide a good opportunity for studying the taphonomy of the ecosystem, evolution and migration of taxa, and palaeoenvironmental changes.

A short stop on the way to the Conference venue [September 10th]: The aim of this trip is to show the Owadów-Brzezinki palaeontological site, exhibition pavilion, educational routs and panoramic viewing platform, which is located along the edge of the quarry.

Leaders: Błażej Błażejowski (Institute of Paleobiology, Polish Academy of Sciences) and Andrzej Wierzbowski (University of Warsaw).


MID-CONFERENCE TRIP: Devonian mesophotic environments of the Holy Cross Mountains.
The cost of the mid-conference trip will be included with the registration fee.

Presentation: The aim of the trip is to show Devonian Mesophotic Coral Ecosystems (MCEs) described as the first Palaeozoic MCEs. They are dominated by platy and frondescent tabulates, with very high biodiversity comprising rugose corals, brachiopods, crinoids and others.
While nowadays these beds are poorly accessible, we will try to visit both (Eifelian and Givetian) sites.

Preliminary programme (1 day fieldrip, September 14) :
Morning – Skały MCE (Eifelian Skały Fm)
Afternoon – Kostomłoty/Laskowa MCE (Givetian Laskowa Góra Beds)
Alternatively Visean reefal olistostrome at Ostrówka.

Leaders: Mikołaj K. Zapalski (University of Warsaw), Błażej Berkowski, Jan J. Król (Adam Mickiewicz University, Poznań).

MID-CONFERENCE TRIP: Coral colonization of the cyanobacteria-sponge bioherms (Late Jurassic, Julianka quarry).
The cost of mid-conference trip will be included with the registration fee.

Presentation: The abandoned quarry at Julianka is located in the Fore-Sudetic monocline, in the  Częstochowa Upland. It shows the youngest Late Jurassic (Early Kimmeridgian) deposits of the area preserved below the overlaying transgressive Late Cretaceous (Early Cenomanian) glauconitic sands. The late Jurassic deposits are limestones: in their lower part represented by diversified  lithologies of the cyanobacteria-siliceous sponge bioherm complex, in the upper part – by the coral limestones intepreted as formed in mesophotic zone – rich in platy microsolenid corals.

A stop on the way to the Conference dinner in Wieliczka [September 15th].

Leaders: Andrzej Wierzbowski (University of Warsaw) and Jarosław Stolarski (Institute of Paleobiology, Polish Academy of Sciences)

POST-CONFERENCE TRIP: The oldest sponge-scleractinian reef mounds in the World, Middle Triassic (Anisian) of Upper Silesia, Poland.

Presentation: This fieldtrip aims to present decameter-scale sponge mounds that contain the first scleractinian corals after the Permian/Triassic mass extinction. Around 20 coral species have been identified in those reefs so far. Although the coral microstructure is diagenetically altered, it will be possible to see branching and tabular coral growth forms. The mounds developed on a carbonate platform during one of the sea-level highstands. They are overlain by oolitic shoal facies. The influence of primary facies on diagenesis will also be discussed.

Preliminary programme (1 day fieldtrip, September 16):
Morning – Tarnów Opolski (mound with corals)
Afternoon – Kamień Śląski (spatial distribution of mounds, the intervening and overlying facies)

Leaders: Michał Matysik, Bogusław Kołodziej, Iga Ryczkowska (Jagiellonian University, Kraków).

POST-CONFERENCE TRIP: Corals from a lost Štramberk Carbonate Platform (Jurassic/Cretaceous boundary, Czech Republic).

Presentation:

Štramberk is one of the most renowned paleontological sites. Tithonian–lower Berriasian Štramberk Limestone exposed in a huge Kotouč quarry in Štramberk (Carpathians, Czech Republic) occur as olistoliths and large blocks embedded in the Cretaceous flysch. Corals were already described in the 19th century by Marie Ogilvie. Starting in the 1970s they were studied by Helena Eliášová. Approximately 120 species of 50 genera are known from these limestones, which makes it the richest coral assemblage from coral reefs grown around the time of the Jurassic/Cretaceous boundary. In ca. 10 cm-size samples of reef breccia, corals of even 3–5 genera can occur.

Particularly rich at this locality are corals of the suborder Pachythecaliina (=Amphiastreina) whose higher taxonomic position is one of the most debated among the the post-Paleozoic corals. Similar coral assemblages occur in the Štramberk-type limestones as pebbles-blocks (exotics) in flysch deposits of the Polish Carpathians. Coral-microbial patch-reefs were formed mostly in an inner carbonate platform. The Štramberk Limestone also contains boundstones with the microencruster-microbial-cement framework with rare corals. This type of reef was developed only on the slopes of intra-Tethyan carbonate platforms.

Preliminary programme (3 days fieldtrip):

September 17 (Sunday): meeting point in Kraków. On the way to Štramberk we will stop in Polish Carpathians to see flysch with pebbles of Štramberk-type limestones and Lower Cretaceous corals.
September 18 (Monday): Visit in the Kotouč quarry in Štramberk.
September 19 (Tuesday): departure to Kraków.

Leaders: Bogusław Kołodziej (Jagiellonian Univ., Kraków), Zuzana Kozlová (Charles Univ., Prague), Justyna Kowal-Kasprzyk (AGH, Kraków), Petr Skupien (Technical Univ., Ostrava )