GEUS Bulletin no 5.pmd

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BATHONIAN CALLOVIAN species as the depositional settings of these localities are comparable overall. However, a Callovian range is reported from the present Arctic regions of the Sverdrup Basin and Svalbard (Smelror 1993). Some exceptionally early occurrences of Ambonosphaera calloviana and Gonyaulacysta helicoidea in the A. ishmae Chronozone and of Pareodinia stegasta and Paraevansia brachythelis in the C. apertum Chronozone are recorded in the present succession. 104 BOREAL AMMONITE ZONATION Erymnoceras coronatum Kosmoceras jason Sigaloceras calloviense Proplanulites koenigi Succession at Ravn Pynt Succession south of Ravn Pynt LITHO- STRATIGRAPHY Cadoceras nordenskjoeldi Spath Plateau Member Cadoceras apertum Cadoceras calyx Cadoceras variabile Arcticoceras cranocephaloide Arcticoceras ishmae Arctocephalites greenlandicus Arctocephalites arcticus FAUNA HORIZONS 31 26 22 20 19 16 15 Pelion Formation Hiatus GEUS Bulletin no 5.pmd 104 29-10-2004, 11:14 ? Fig. 3. Schematic stratigraphical classification of the Middle Jurassic succession on Store Koldewey. The dinoflagellate cysts in the Middle Jurassic succession are divided into an Upper Bathonian and a Lower Callovian dinoflagellate cyst assemblage. The boundary is placed at 19.2 m, above which level a significant number of new species appear (Figs 2, 4). Most species in the Upper Bathonian assemblage also occur in the Lower Callovian assemblage and the composition of the Bathonian assemblage varies significantly between the few samples studied. The younger,
Metre 50 25 0 Store Koldewey Ravn Pynt Sample height 57.00 43.80 39.40 38.60 31.80 29.50 26.50 23.00 19.80 12.40 4.60 3.60 GGU sample no. 360400 54.50 360401 360397 360395 360394 360393 360392 360700 360699 360698 360696 360694 360693 System Stage Formation Jurassic (Middle) Callovian Pelion Formation Bathonian 1 Paraevansia spp. 2 Pareodinia scopaeus 3 Ambonosphaera calloviense 4 Valensiella ovula 5 Gonyaulacysta jurassica 6 Valensiella dictydia 7 Gonyaulacysta pectinigera 8 Paragonyaulacysta retiphragmata 9 Evansia janeae 10 Meiourogonyaulax spongiosa 11 Chytroeisphaeridia hyalina 12 Atopodinium haromense 13 Rhynchodiniopsis cf. cladophora 14 Sirmiodinium grossii 15 Caddosphaera halosa 16 Meiourogonyaulax spp. 17 Chlamydophorella cf. ectotabulata 18 Durotrigia daveyi 19 Gonyaulacysta helicoidea 20 Batiacasphaera spp. 21 Scriniodinium spp. 22 Sentusidinium spp. 23 Chytroeisphaeridia chytroeoides 24 Cymatiosphaera spp. 25 Sentusidinium pelionense 26 Kallosphaeridium spp. 27 Ctenidodinium thulium 28 Pareodinia arctica 29 Valvaeodinium leneae 30 Escharisphaeridium rudis 31 Durotrigia cf. daveyi 32 Pareodinia pachyceras 33 Kallosphaeridium hypornatum 34 Polystephanophorus cf. paracalatus 35 Valensiella sp. Fensome 36 Valensiella spp. 37 Chytroeisphaeridia spp. 38 Fromea tornalis 39 Gonyaulacysta cf. centriconnata 40 Evansia perireticulata 41 Pareodinia stegasta 42 N. plegas var. dictyornatus 43 Aldorfia aldorfensis 44 Dissiliodinium spp. 45 Paraevansia brachythelis 46 Kallosphaeridium praussii 47 Paragonyaulacysta spp. 48 Pareodinia granulata 49 Pareodinia prolongata 50 Scriniodinium cf. luridum 51 Sentusidinium sp. D FENSOME 52 Atopodinium polygonalis 53 Fromea spp. 54 Pareodinia spp. 55 Pareodinia cf. scopaeus 56 Escharisphaeridium spp. 57 Jansonia spp. 58 Solisphaeridium ankyleton 59 Leptodinium spp. 60 Sirmiodiniopsis spp. 61 Gonyaulacysta spp. 62 Pareodinia cf. groenlandicum 63 Escharisphaeridium spp. 64 Lithodinia spp. 65 Ambonosphaera cf. calloviana 66 Gonyaulacysta cf. helicoidea Fig. 4. Distribution chart of the dinoflagellate cysts in the Middle Jurassic succession at Ravn Pynt on Store Koldewey. >50 specimens 20–50 specimens 5–19 specimens 1–4 specimens ALPHABETICAL SPECIES LIST 43 Aldorfia aldorfensis 3 Ambonosphaera calloviana 65 Ambonosphaera cf. calloviana 12 Atopodinium haromense 52 Atopodinium polygonalis 20 Batiacasphaera spp. 15 Caddosphaera halosa 17 Chlamydophorella cf. ectotabulata 23 Chytroeisphaeridia chytroeoides 11 Chytroeisphaeridia hyalina 37 Chytroeisphaeridia spp. 27 Ctenidodinium thulium 24 Cymatiosphaera spp. 44 Dissiliodinium spp. 31 Durotrigia cf. daveyi 18 Durotrigia daveyi 63 Escharisphaeridium spp. 30 Escharisphaeridium rudis 56 Escharisphaeridium spp. 9 Evansia janeae 40 Evansia perireticulata 53 Fromea spp. 38 Fromea tornalis 39 Gonyaulacysta cf. centriconnata 66 Gonyaulacysta cf. helicoidea 19 Gonyaulacysta helicoidea 5 Gonyaulacysta jurassica 7 Gonyaulacysta pectinigera 61 Gonyaulacysta spp. 57 Jansonia spp. 33 Kallosphaeridium hypornatum 46 Kallosphaeridium praussii 26 Kallosphaeridium spp. 59 Leptodinium spp. 64 Lithodinia spp. 10 Meiourogonyaulax spongiosa 16 Meiourogonyaulax spp. 42 N. plegas var. dictyornatus 45 Paraevansia brachythelis 1 Paraevansia spp. 8 Paragonyaulacysta retiphragmata 47 Paragonyaulacysta spp. 48 Pareodinia granulata 28 Pareodinia arctica 62 Pareodinia cf. groenlandicum 55 Pareodinia cf. scopaeus 32 Pareodinia pachyceras 49 Pareodinia prolongata 2 Pareodinia scopaeus 54 Pareodinia spp. 41 Pareodinia stegasta 34 Polystephanophorus cf. paracalatus 13 Rhynchodiniopsis cf. cladophora 50 Scriniodinium cf. luridum 21 Scriniodinium spp. 25 Sentusidinium pelionense 51 Sentusidinium sp. D Fensome 22 Sentusidinium spp. 60 Sirmiodiniopsis spp. 14 Sirmiodinium grossii 58 Solisphaeridium ankyleton 6 Valensiella dictydia 4 Valensiella ovula 35 Valensiella sp. Fensome 36 Valensiella spp. 29 Valvaeodinium leneae 105 GEUS Bulletin no 5.pmd 105 29-10-2004, 11:14
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GEOLOGICAL SURVEY OF DENMARK AND GR
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GEUS Bulletin no 5.pmd 3 29-10-2004
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Contents Preface . . . . . . . . .
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(Alsen & Surlyk 2004, this volume).
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Jurassic syn-rift sedimentation on
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NW SE m 1000 500 0 NW SE m 1000 500
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grained than the lower parasequence
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the Pelion Formation. The mudstone-
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The fluviatile Bristol Elv Formatio
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Name. After the river Bristol Elv i
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edded, and display both sheet-like
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N S Fig. 5. Coarse-grained sandston
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Fig. 7. Lacustrine deposits from th
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deposition of peat and coal. Journa
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Maximum Middle Jurassic transgressi
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834 N Lycett Bjerg Barrikade Gletsc
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SW NE Lycett Bjerg Parnas Member Be
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Cadoceras cf. nordenskjoeldi Callom
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4 C B 1 2 GEUS Bulletin no 5.pmd 41
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Fig. 1. Sketch-map of the Jameson L
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Table 1. Measurement of dimensions
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1 2 GEUS Bulletin no 5.pmd 49 29-10
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A new Middle-Upper Jurassic success
Page 53 and 54: 74º00'N ■■ ■■ ■■ 73º5
Page 55 and 56: System Ma 159.4 154.1 164.4 169.2 1
Page 57 and 58: Sedimentary structures Biota Struct
Page 59 and 60: wards units is biogenic carbonate d
Page 61 and 62: Fig. 7. Log panel giving a broadly
Page 63 and 64: SPM LU to medium-grained and consis
Page 65 and 66: and mudstone drapes reflects varyin
Page 67 and 68: with the presence of a minor angula
Page 69 and 70: the north-east and south-west, resp
Page 71 and 72: elly mass-flow deposits. In: Koster
Page 73 and 74: Jurassic dinoflagellate cyst strati
Page 75 and 76: 74°00'N ■■ ■■ ■■ 73°5
Page 77 and 78: Bernbjerg Formation Payer Dal Forma
Page 79 and 80: Depositional environment. The prese
Page 81 and 82: GEUS Bulletin no 5.pmd 81 29-10-200
Page 85 and 86: Metres 30 20 10 Hold with Hope, Loc
Page 87 and 88: Correlations The Pelion Formation o
Page 89 and 90: Jurassic dinoflagellate cysts from
Page 91 and 92: Fig. 2. Sedimentological log of the
Page 93 and 94: LITHOSTRATIGRAPHY BIOSTRATIGRAPHY F
Page 95 and 96: ALPHABETICAL SPECIES LIST 41 Adnato
Page 97 and 98: References Alsgaard, P.C., Felt, V.
Page 99 and 100: Jurassic dinoflagellate cyst strati
Page 101 and 102: parties from the Geological Survey
Page 103: may indicate a hiatus in the sedime
Page 107 and 108: Fig. 6. Schematic stratigraphical c
Page 109 and 110: Chronozone) to the earliest Kimmeri
Page 111 and 112: The Upper Jurassic succession is co
Page 115 and 116: 185 Greenland from Archaean to Quat
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