Porifera-microbialites of the Lower Liassic (Northern Calcareous ...

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24 � The profile (Fig. 9) exposes Triassic limestones of the basinal Kössen facies that are overlain by a Liassic sequence of thick-bedded, marly Kendlbach limestones, measuring 13 m. Böhm (1992) has attributet the lower 9 m to the Praeplanorbis zone and the 4 m layers above to the zone of Psiloceras planorbis. In addition to peloids that are a typical feature of limestones of the Kendlbach Fm., its lower unit (transition to the underlying Kössen marls) also shows a high ratio of sponge spicules. The upper part displays high abundances of peloids but is intercalated several times by layers of pure crinodal debris. The succession continues with crinoidal dominated red limestones of Enzesfeld- and Adnet facies. At the top, the sequence is erosively capped by a sliding mass of grey deep-water limestones (sample KB 5). These are biomicrites of “Fleckenkalk” type, similar to those at Glasenbachklamm (with sponge spicules and bioturbation). � Sponge spicules are predominantly documented in the Fleckenkalk facies but also occur in a few layers of the lower Kendlbach limestone (zone of Psiloceras planorbis?). � Studies about the Triassic-Jurassic section were published by Blau & Grün (1994) and by Golebiowski & Braunstein (1988). Facies Analyses: � “Lower Kendlbach limestones” (sample KB 2): Biopelmicrites (wacke- to packstones) with a high content of predominantly non-orientated, isolated sponge spicules. Most of them are thick monaxons and tetraxons of non-lithistid demosponges. Less frequently, monaxons and broken hexactins of Lyssacinosida occur. Fig. 9. Sketch of the outcrop along the forest track at Sonntagkendl-graben. Modified from Plöchinger (1983). Samples KB 1-5 as shown. � “Fleckenkalke” (sample KB 5, Pl. 3B-D): Biomicrites (wacke- to packstones) with radiolarians and a high content of isolated sponge spicules (Lyssacinosida). Most spicules are unequally scattered in the micritic matrix, whereas irregular clusters of spicules are intercalated. Several very small, mm-sized and rounded (corroded) fragments of dictyonal skeletons occur.
Localities (Facies and Sponge Analyses) 25 The sediment varies between grey limestone facies type of the Scheibelberg Formation and the coarser, bioturbated limestone facies type of the Fleckenkalke. Sponge Analyses: � Isolated lyssacinosid sponge spicules as well as fragments of dictyonal skeletons in the Fleckenkalke both represents the remains of collapsed and dislocated specimens. The arrangement of spicules in the Kendlbach facies also leads to the assumption that there is a mixture of dislocated spicules and par- to autochthonous collapsed specimens. Further interpretation is impossible, due to a high degree of bioturbation. 4.4. Hochfelln (HF) Geological Setting: � There are several localities in the alpine region between Marquartstein and Ruhpolding (SE of the Chiemsee) displaying Lower Jurassic sediments (e.g. Hochgern mountain, Pl. 4A-B). Crucial sequences of cherty basinal limestones and red limestones of the Adnet type are mostly located along the boundary between the Allgäu nappe and Lechtal nappe which underwent strong tectonic processes. Some grey cherty limestones of Lower Liassic age are exposed for example in a small tectonic window at the summit of the Hochfelln mountain (GK25 / Blatt 8241 Ruhpolding, R 45 4220, H 52 9175), (Fig. 10, Pl. 3E-F). The outcropping sequence forms a syncline structure that was strongly compressed and disjuncted by faults. Fig. 10. Schematic section through Hochfelln mountain summit (compare with Pl. 3E,F). Modified from Nöth (1926). Samples (HF 1-5) encompasses facies types of the Triassic- Jurassic boundary interval.
Page 1 and 2: Porifera-microbialites of the Lower
Page 3 and 4: Abstract In the aftermath of the Tr
Page 5 and 6: Zusammenfassung Nach dem Aussterbee
Page 7 and 8: Content 1. Introduction ...........
Page 9 and 10: Introduction 9 1. Introduction In U
Page 11 and 12: Geological Setting 11 2. Geological
Page 13 and 14: Geological Setting 13 Fig. 2. Locat
Page 15 and 16: Methods 15 3. Methods In the Rot-Gr
Page 17 and 18: Localities (Facies and Sponge Analy
Page 23: Localities (Facies and Sponge Analy
Page 51: Localities (Facies and Sponge Analy
Page 54 and 55: 54 and ferromanganese crusts. The b
Page 56 and 57: 56 5.1.1. The Sponge Fauna of the S
Page 58 and 59: 58 Skeleton: Lyssacinosid type with
Page 60 and 61: 60 Fig. 29a. Skeleton types and ass
Page 62 and 63: 62 new data from recent species to
Page 64 and 65: 64 sheltered by the adjacent sand d
Page 66 and 67: 66 In addition to the episodic sedi
Page 68 and 69: 68 found in the most condensed sect
Page 70 and 71: 70 5.2.1. The Sponge Fauna of the S
Page 72 and 73: 72 5.2.2. Diagenesis Sponge-dominat
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Fossil Record of Sponges 75 6. Foss
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Fossil Record of Sponges 77 Fig. 35
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Comparison with other Spiculites 83
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Comparison with other Spiculites 85
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88 Hallam 1996; Hallam and Goodfell
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90 From the Lower Liassic Kendlbach
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92 At Steinplatte/Plattenkogel loca
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94 8.2. Major and Trace Elements We
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96 sediments. Due to this “contam
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98 significance of microbial involv
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100
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102 � The Lower Liassic sediments
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104 Böhm F (1992) Mikrofazies und
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106 Garrison RE, Fischer AG (1969)
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108 Krause FF, Scotese CR, Nieto C,
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110 Olsen PE, Kent DV, Sues H-D, Ko
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112 Schulze FE (1904) Hexactinellid
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114 Wendt J (1969) Stratigraphie un
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Plate 1 Glasenbachklamm - Lower Lia
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Plate 2 Mühlstein-South - Hornstei
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Plate 3 Sonntagkendlgraben - Flecke
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Plate 4 Hochgern - Liassic sediment
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Plate 5 Scheibelberg - Type locatio
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Plate 6 Luegwinkel - Liassic sedime
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Plate 7 Moosbergalm - Slope and bas
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Plate 8 Tannhauser Berg - Liassic s
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Plate 9 Adnet / Rot-Grau-Schnöll Q
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Plate 10 Adnet / Rot-Grau-Schnöll
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Plate 15 Adnet / Lienbacher Quarry
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Plate 16 Adnet / Eisenmann Quarry -
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Plate 17 Steinplatte / Plattenkogel
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Plate 21 Diapir of Murguia / Spain
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Plate 22 Arctic Vesterisbanken Seam
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Supplement 1.1 (datas to Fig. 42) -
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Supplement 1.2 (datas to Fig. 43 +
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Supplement 2. (datas to Fig. 47) -
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Supplement 3.2 (datas to Fig. 46) -
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Supplement 4. - Energy Dispersive X
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Supplement 6. - Register of Localit
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Steinplatte/Fischer’s Coral Garde
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Publications Parts of this study ar
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Curriculum Vitae Geboren in Bremerh
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