Gotland Trip Report 2004
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Reference Localities for Palaeontology and Geology in the Silurian of Gotland
SVERIGES GEOLOGISKA UNDERSOKNING SER C NR 705 AVHANDLINGAR OCH UPPSATSER ÅRSBOK 68 NR 12 SVEN LAUFELD REFERENCE LOCALITIES FOR PALAEONTOLOGY AND GEOLOGY IN THE SILURIAN OF GOTLAND STOCKHOLM 1974 SVERIGES GEOLOGISKA UNDERSOKNING SER C NR 705 AVHANDLINGAR OCH UPPSATSER ÅRSBOK 68 NR 12 SVEN LAUFELD REFERENCE LOCALITIES FOR PALAEONTOLOGY AND GEOLOGY IN THE SILURIAN OF GOTLAND STOCKHOLM 1974 ISBN 91-7158-059-X Kartorna är godkända från sekretessynpunkt för spridning Rikets allmänna kartverk 1974-03-29 IU S UNES D l Project ECOSTRATIGRAPHY Laufeld, S.: Reference loca!ities for palaeontology and geology in the Silurian of Gotland. Sveriges Geologiska Undersökning, Ser. C, No. 705, pp. 1-172. Stock holm, 24th May, 1974. About 530 geologkal localities in the Silurian of the island of Gotland, Sweden, are described under code names in alphabetical order. Each locality is provided with a UTM grid reference and a detailed description with references to the topographical and geologkal map sheets. Information on reference points and levels are included for some localities. The stratigraphic position of each locality is stated. A bibliography is attached to several localities. Sven Laufeld, Department of Historical Geology and Palaeontology, Sölvegatan 13, S-223 62 Lund, Sweden, 4th March, 1974. 4 Contents Preface. By Anders Martinsson 5 Introduction 7 Directions for use lO Grid references 10 Churches 11 Detailed descriptions 11 Reference point and leve! 11 Stratigraphy 11 References 12 Indexes .. 12 Practical details 13 Descriptions of localities 14 References .. 145 Index by topographical maps 149 Index by geological maps 157 Index by stratigraphical order .. 165 5 Preface In 1968 a course was set for continued investigations of the Silurian of Gotland and Scania. -
for Palaeontology and Geology in the Silurian Of
SVERIGES GEOLOGISKA UNDERSOKNING SER C NR 705 AVHANDLINGAR OCH UPPSATSER ARSBOK 68 NR 12 Sveriges Geologiska Undarsökning ~- - TJÄNSTEEXEMPLAR ~~--- -- -- SVEN LAUFELD R~FERENCE LOCALITIES FOR PALAEONTOLOGY AND GEOLOGY IN THE SILURIAN OF GOTLAND STOCKHOLM 1974 SVERIGES GEOLOGISKA UNDERSOKNING SER C NR 705 AVHANDLINGAR OCH UPPSATSER ARSBOK 68 NR 12 SVEN LAUFELD REFERENCE LOCALITIES FOR PALAEONTOLOGY AND GEOLOGY IN THE SILURIAN OF GOTLAND STOCKHOLM 1974 ISBN 91-7158-059-X Kartorna är godkända från sekretessynpunkt för spridning Rikets allmänna kartverk 1974-03-29 IU S UNES D l Project ECOSTRATIGRAPHY Laufeld, S.: Reference localities for palaeontology and geology in the Silurian of Gotland. Sveriges Geologiska Undersökning, Ser. C, No. 705, pp. 1- 172. Stock holm, 24th May, 1974. About 530 geological localities in the Silurian of the island of Gotland, Sweden, are described under code names in alphabetical order. Each locality is provided with a UTM grid reference and a detail ed description with references to the topographical and geological map sheets. Information on reference points and levels are included for some localities. The stratigraphic position of each locality is stated. A bibliography is attached to severallocalities. Sven Laufeld, Department of Historical Geology and Palaeontology, Sölvegatan 13, S-223 62 Lund, Sweden, 4th March, 1974. 4 Contents Prefaceo By Anders Martinsson 5 Introduction 7 Di rections for use 10 Grid references 10 Churches 11 D etail ed descriptions 11 Reference point and leve! 11 Stratigraphy 11 References 12 Indexes o o 12 Practical details 13 Descriptions of localities 14 References o o 145 Index by topographical maps 149 Index by geological maps 157 Index by stratigraphical order o o 165 s Preface In 1968 a course was set for continued investigations of the Silurian of Gotland and Scania. -
The Silurian Upper Burgsvik and Lower Hamra-Sundre Beds, Gotland
Stel & de Coo, Silurian U. Burgsvik and L. Hamra-Sundre Beds, Gotland, Scripta Geol. 44 (1977) 1 The Silurian Upper Burgsvik and Lower Hamra-Sundre Beds, Gotland Jan H. Stel and Jan C. M. de Coo Stel, J. H. & J. C. M. de Coo. The Silurian Upper Burgsvik and Lower Hamra- Sundre Beds, Gotland. — Scripta Geol., 44: 1-43, 29 figs., Leiden, December 1977. Five facies are recognized in the Upper Burgsvik and Lower Hamra-Sundre Beds on account of a lithological and paleobiological analysis: I) siliciclastic, II) bio- clastic, III) oolitic/pisolitic, IV) oncolitic/biostromal, and V) crinoidal facies. The facies represent five depositional environments: a beach, a fore-shore, a surf, a shallow marine current, and an off-shore environment. The diversity and colony shape of tabulates in facies IV is related to discrete physical and biological fac- tors. The succession of facies reflects a transgressive sequence. Land was situated in the north-west. Jan H. Stel, Geologisch Instituut der Rijksuniversiteit Groningen, Melkweg 1, Groningen, The Netherlands; Jan C. M. de Coo, Geologisch en Mineralogisch Instituut der Rijksuniversiteit Leiden, Garenmarkt 1B, Leiden, The Netherlands; present address: Shell Tunirex, 24/26 Place de l'Afrique, Tunis, Tunisia. Introduction 2 Lithology (J. C. M. de Coo) 4 Rock types 4 Grain types 5 Facies 10 Sections 11 Interpretation 17 Paleobiology (J. H. Stel) 19 Life assemblages 19 Algal environment 26 Trophic analysis of the fauna 27 Interaction of algae and tabulates 32 Sponge biostromes in the Lower Hamra-Sundre Beds 36 Conclusions 37 Appendix 40 References 41 2 Stel & de Coo, Silurian U.