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Miocene sites around St. Josef, Styria, Austria (10/01/2019)
FranzBernhard posted a topic in Fossil Hunting Trips
Hello, at Tuesday, 10/01/2019, I made my first visit to the area around St. Josef, Western Styria, Austria ("Florianer Schichten", Langhian-Miocene) since about 11 months. I checked out 6 sites in 5 hours, three of them were made public by me 2-3 years ago: Fuggaberg-3-a Fuggaberg-3-b (This one was also published in a local journal 2 years ago.) Hoellerkogel-4 Bramberg-1 All sites had easy surface pickings of small fossils from debris. Outcropping sediment with fossils is exposed in 5 of them, in one you have to dig a little bit (Fuggaberg-3), but its still easy going. I guess I have collected and seen about 40 mollusc species within these 5 hours. So, the situation around St. Josef is still very good (if you like miocene molluscs and small fossils, though ). I am starting with: Fuggaberg-3 Two fossil-rich outcrops are located in a very small creek, about 15 m apart (W and E, 1st row, left). At E, only the fossil-poor overlying sediments are exposed at the moment (1st row, right, the red object is about 12x6 cm large), but digging in the debris below (2nd row, right) yielded some fossil-rich matrix specimens. You can see the yield of this 10-minute dig in the pic of the 3rd row, right. Of special interest are the two small fossils lying on oyster shells (coral and muricid). The debris 1-3 meters below the outcrop contains many loose fossils, eg. Granulolabium bicinctum (2nd row, left) or Terebralia bidendata (3rd row, left). Nearly the same situation at W, only overlying sediment is exposed (4th row, left). In the debris below, below the red object, many small fossils are lying around (4rd row, right). You can see Granulolabium bicinctum, Terebralia bidendata, Turritella partschi, Sphaeronassa shoenni, Acanthocardia paucicostata and a bi-valve Anadara diluvii; only the last one is not lying at its original position but was put there for photo purposes . Continued... -
Short Icy Miocene Trip around St. Josef, Styria, Austria
FranzBernhard posted a topic in Fossil Hunting Trips
Icy? Well, compared to some areas in the US or Moscow, it had only a few degrees below zero (Celsius) last Sunday. The nights had about -10°C, the days about -2°C. This period lastet from last Friday to Monday. No snow at all and very, very dry air. The last two days we had about 0°C during the night and +10°C maximum during the day. Still very dry. So without any snow and clear, but "cold" weather, I checked out a few Miocene sites around St. Josef in western Styria, Austria. I have made a detailed report about the area more then a year ago here: Rocks and fossils were mostly firmly frozen to the ground, and in some places more than 10 cm long fibrous ice was growing from the ground, pushing up leaves, soil and in some places fossils. Sites looked mostly the same as during my last visit, except Höllerkogel-10. Here at Höllerkogel-10, the farmer had removed a little bit of material from the bank of the forestry road. The sites contains mainly Granulolabium snails, but also a variety of other molluscs (see topic above). A little bit surprising last Sunday were an echinoid mold and a leaf impression, both ready to be picked (see pics, fossils as found frozen to the ground ). Echinoids are known from this site, but I have not seen myself such a "big" leaf in this formation until know. First I thought that this leaf is a recent leaf, sticking to the rock. But it isn´t, its a fossil. The echinoids occur as molds in the upper part of the outcrop; the lower part contains quite well preserved shell fossils (gastropods and bivalves). Nearly everything was frozen to the ground, of course, and large blocks of fossiliferous sediment were frozen hard like concrete. Maybe I will visit the site again in the near future to pick through some of the fresh debris. The large blocks have probably disintegrated then. That´s all, thanks for looking! Franz Bernhard -
Terebralia (horn snails) from "Fuggaberg-6", St. Josef, Austria, Styria
FranzBernhard posted a topic in Fossil Hunting Trips
Hello, another fossil hunting trip to the "Florianer Schichten" in St. Josef, Styria, Austria (Styrian basin, Miocene - Langhian, ca. 15 Ma). This time I went to a locality (Fuggaberg-6), that is dominated by the horn snails Terebralia lignitarum. This is one of the most common molluscs in the "Florianer Schichten", but only in some localities. The recent species Terebalia palustris is living in mangrove forests in the intertidal zone and is a herbivore. I discovered this locality at 10/22/2016 and collected there at 04/22/2017. Now, about 1 1/2 years later, I visited it again. Not much was to see, it looked nearly natural again, so I had to scratch a few minutes to make an outcrop. I have done this scratching at 11/08/2018 and made the photos at 11/11/2018. First "pic" is a geological overview of Styria with the position of St. Josef southwest of Graz. Second "pic" is a map of the area, site "Fuggaberg-6" is near the "H" of Höllerkogel. Third pic is an overview of the area with the outcrop in the center. Fourth pic is the outcrop. Scale bar is 1x1 m, left of the green x is a layer rich in gastros, left of the red x is a layer rich in oysters. Fifth pic is a detail of the outcrop. Terebralia are enriched in some spots, field of view is about 16 cm. To be continued...- 22 replies
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