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

More documents

Recommendations

Info

Plate 10 Adnet / Rot-Grau-Schnöll Quarry – Features of the Schnöll Formation. (A): Successively collapsed sponge specimens, indicated by several generations of microstromatactis cavities inside the spicular microbialite (thin section, horizon no. “2” in Figure 15, ~5cm below the quarry floor). (B): Detail of the spiculite from the lower part of the north-eastern profile (thin section, horizon no.“3” in Figure 15). Cross sections of mainly broken sponges that show preserved spicular configurations, canals and ostia (arrow). (C): Collapsed lyssacinosid sponge showing mainly thick oxea and thin-rayed hexactins. Former sponge tissue is syndiagenetically shrunk (stromatactis cavities) and fixed by micropeloidal automicrites (lighter than the surrounding sediment). The lower part of the photo shows a neptunian dike that is filled by silts, laminated sediments, and a spiculite clast. Arrow = microstylolites. (D): Erosion horizon (photograph of quarry wall, horizon no. ”4” in Figure 15), NE profile. A layer, embedding intraclasts with ferromanganese encrustations, was distinctly corroded, then covered by a second Fe/Mn-crust, and afterwards discordantly overlain by sediment that contains several ammonite shells and sponge clasts (compare to Fig. 28B). (E): “Sponge layer” (sensu Böhm et al. 1999) in the south-eastern corner of the Rot-Grau- Schnöll Quarry. Laminated grey limestones are discordantly overlain by 15-20 cm of different biodetrital sediments, corroded sponges, and other bioclasts. The shown section is grey colored due to a late diagenetic color-change. Thus most sponges were accentuated by pyritization. Photograph of quarry wall (horizon no. “7” in Figure 15). (F): Sector of a sponge wall of a tube-shaped species (skeleton type 4). Some hexactin parenchymal spicules are preserved (arrow). Former sponge tissue is darkened by dispersed pyrite, thus accentuating the sediment-filled canals of the aquiferous system. (G): View on top of the corroded ferromanganese marmorea crust (zone of Schlotheimia marmorea) that was kept completely free of sponge settlement. (H): Stromatactis cavities, located in a thin horizon on top of the southwestern profile (photograph of quarry wall, horizon no.”10” in Figure 15).
A C E Plate 10 Locality: Adnet/Rot-Grau-Schnöll Quarry (A-H) 5 mm 250 �m 10 cm G H B D F 10 cm 1 cm 1 cm 10 cm
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 19 and 20:
Page 21 and 22:
Page 23 and 24:
Page 25 and 26:
Page 27 and 28:
Page 29 and 30:
Page 31 and 32:
Page 33 and 34:
Page 35 and 36:
Page 37 and 38:
Page 39 and 40:
Page 41 and 42:
Page 43 and 44:
Page 45 and 46:
Page 47 and 48:
Page 49 and 50:
Page 51:
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
Page 75 and 76:
Fossil Record of Sponges 75 6. Foss
Page 77 and 78:
Fossil Record of Sponges 77 Fig. 35
Page 79 and 80:
Page 81 and 82:
Page 83 and 84: Comparison with other Spiculites 83
Page 85: Comparison with other Spiculites 85
Page 88 and 89: 88 Hallam 1996; Hallam and Goodfell
Page 90 and 91: 90 From the Lower Liassic Kendlbach
Page 92 and 93: 92 At Steinplatte/Plattenkogel loca
Page 94 and 95: 94 8.2. Major and Trace Elements We
Page 96 and 97: 96 sediments. Due to this “contam
Page 98 and 99: 98 significance of microbial involv
Page 100 and 101: 100
Page 102 and 103: 102 � The Lower Liassic sediments
Page 104 and 105: 104 Böhm F (1992) Mikrofazies und
Page 106 and 107: 106 Garrison RE, Fischer AG (1969)
Page 108 and 109: 108 Krause FF, Scotese CR, Nieto C,
Page 110 and 111: 110 Olsen PE, Kent DV, Sues H-D, Ko
Page 112 and 113: 112 Schulze FE (1904) Hexactinellid
Page 114 and 115: 114 Wendt J (1969) Stratigraphie un
Page 116 and 117: Plate 1 Glasenbachklamm - Lower Lia
Page 118 and 119: Plate 2 Mühlstein-South - Hornstei
Page 120 and 121: Plate 3 Sonntagkendlgraben - Flecke
Page 122 and 123: Plate 4 Hochgern - Liassic sediment
Page 124 and 125: Plate 5 Scheibelberg - Type locatio
Page 126 and 127: Plate 6 Luegwinkel - Liassic sedime
Page 128 and 129: Plate 7 Moosbergalm - Slope and bas
Page 130 and 131: Plate 8 Tannhauser Berg - Liassic s
Page 132 and 133: Plate 9 Adnet / Rot-Grau-Schnöll Q
Page 136 and 137: Plate 11 Adnet / Rot-Grau-Schnöll
Page 144 and 145: Plate 15 Adnet / Lienbacher Quarry
Page 146 and 147: Plate 16 Adnet / Eisenmann Quarry -
Page 148 and 149: Plate 17 Steinplatte / Plattenkogel
Page 156 and 157: Plate 21 Diapir of Murguia / Spain
Page 158 and 159: Plate 22 Arctic Vesterisbanken Seam
Page 161 and 162: Supplement 1.1 (datas to Fig. 42) -
Page 163 and 164: Supplement 1.2 (datas to Fig. 43 +
Page 165: Supplement 2. (datas to Fig. 47) -
Page 169: Supplement 3.2 (datas to Fig. 46) -
Page 173: Supplement 4. - Energy Dispersive X
Page 177 and 178: Supplement 6. - Register of Localit
Page 179 and 180: Steinplatte/Fischer’s Coral Garde
Page 181: Publications Parts of this study ar
Page 185:
Curriculum Vitae Geboren in Bremerh
show all

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

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?