GEUS Bulletin no 5.pmd

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References Alsgaard, P.C., Felt, V.L., Vosgerau, H. & Surlyk, F. 2003: The Jurassic of Kuhn Ø, North-East Greenland. In: Ineson, J.R. & Surlyk, F. (eds): The Jurassic of Denmark and Greenland. Geological Survey of Denmark and Greenland Bulletin 1, 865–892. Bailey, D. & Hogg, N.M. 1995: Fentonia bjaerkei gen. et comb. nov.; transfer from Parvocysta Bjaerke 1980. Journal of Micropalaeontology 14(1), 58 pp. Callomon, J.H. 1993: The ammonite succession in the Middle Jurassic of East Greenland. Bulletin of the Geological Society of Denmark 40, 83–113. Donovan, D.T. 1957: The Jurassic and Cretaceous systems in East Greenland. Meddelelser om Grønland 155(4), 1–214. Engkilde, M. & Surlyk, F. 2003: Shallow marine syn-rift sedimentation: Middle Jurassic Pelion Formation, Jameson Land, East Greenland. In: Ineson, J.R. & Surlyk, F. (eds): The Jurassic of Denmark and Greenland. Geological Survey of Denmark and Greenland Bulletin 1, 813–863. Fensome, R.A. 1979: Dinoflagellate cysts and acritarchs from the Middle and Upper Jurassic of Jameson Land, East Greenland. Bulletin Grønlands Geologiske Undersøgelse 132, 98 pp. Kelly, S.R.A., Whitham, A.G., Koraini, A.M. & Price, S.P. 1998: Lithostratigraphy of the Cretaceous (Barremian–Santonian) Hold with Hope Group, NE Greenland. Journal of the Geological Society (London) 155(6), 993–1008. Larsen, M., Piasecki, S., Preuss, T., Seidler, L., Stemmerik, L., Therkelsen, J. & Vosgerau, H. 1997: Petroleum geological activities in East Greenland in 1997. Geology of Greenland Survey Bulletin 180, 35–42. Milner, P.S. & Piasecki, S. 1996: Boreal Middle Jurassic dinoflagellate cyst stratigraphy of Jameson Land, East Greenland. In: Piasecki, S. et al. (eds): Formation of source and reservoir rocks in a sequence stratigraphic framework, Jameson Land, East Greenland. Energy research programme EFP-93, projects 1313/93-0010 and 0017. Danmarks og Grønlands Geologiske Undersøgelse Rapport 1996/30, Vol. I & II, 46 pp. Piasecki, S. 1980: Middle to Late Jurassic dinoflagellate cyst stratigraphy from Milne Land and Jameson Land (East Greenland) correlated with ammonite stratigraphy, 167 pp. Unpublished Ph.D. thesis, University of Copenhagen, Denmark. Piasecki, S. 1996: Boreal dinoflagellate cyst stratigraphy of Middle to Upper Jurassic sediments of Milne Land, East Greenland. In: Piasecki, S. et al. (eds): Formation of source and reservoir rocks in a sequence stratigraphic framework, Jameson Land, East Greenland. Energy Research Programme EFP- 88 GEUS Bulletin no 5.pmd 88 29-10-2004, 11:14 93, projects 1313/93-0010 and 0017. Danmarks og Grønlands Geologiske Undersøgelse Rapport 1996/30, Vol. I & II, 100 pp. Piasecki, S. & Stemmerik, L. 2004: Jurassic dinoflagellate cysts from Hochstetter Forland, North-East Greenland. In: Stemmerik, L. & Stouge, S. (eds): The Jurassic of North-East Greenland. Geological Survey of Denmark and Greenland Bulletin 5, 89–97 (this volume). Piasecki, S., Callomon, J.H. & Stemmerik, L. 2004: Jurassic dinoflagellate cyst stratigraphy of Store Koldewey, North-East Greenland. In: Stemmerik, L. & Stouge, S. (eds): The Jurassic of North-East Greenland. Geological Survey of Denmark and Greenland Bulletin 5, 99–112 (this volume). Poulsen, N.E., Gudmundsson, L., Hansen, J.M. & Husfelt, Y. 1990: Palynological preparation techniques, a new Macerationtank-method and other modifications. Danmarks Geologiske Undersøgelse Serie C 10, 22 pp. Price, S.P. & Whitham, A.G. 1997: Exhumed hydrocarbon traps in East Greenland: analogs for the Lower–Middle Jurassic play of Northwest Europe. American Association of Petroleum Geologists Bulletin 81, 196–221. Stemmerik, L., Clausen, O.R., Korstgård, J., Larsen, M., Piasecki, S., Seidler, L., Surlyk, F. & Therkelsen, J. 1997: Petroleum geological investigations in East Greenland: project ‘Resources of the sedimentary basins of North and East Greenland’. Geology of Greenland Survey Bulletin 176, 29–38. Surlyk, F. 1977: Stratigraphy, tectonics and palaeogeography of the Jurassic sediments of the areas north of Kong Oscars Fjord, East Greenland. Bulletin Grønlands Geologiske Undersøgelse 123, 56 pp. Surlyk, F. 1978: Mesozoic geology and palaeogeography of Hochstetter Forland, East Greenland. Bulletin of the Geological Society of Denmark 27, 73–87. Surlyk, F., Clemmensen, L.B. & Larsen, H.C. 1981: Post-Palaeozoic evolution of the East Greenland continental margin. In: Kerr, J.W. & Fergusson, A.J. (eds): Geology of the North Atlantic borderlands. Canadian Society of Petroleum Geologists Memoir 7, 611–645. Vischer, A. 1943: Die postdevonische Tektonik von Ostgrönland zwischen 74º und 75ºN. Br. Kuhn Ø, Wollaston Forland, Clavering Ø und angrenzende Gebiete. Meddelelser om Grønland 133(1), 195 pp. Vosgerau, H., Larsen, M., Piasecki, S. & Therkelsen, J. 2004: A new Middle–Upper Jurassic succession on Hold with Hope, North-East Greenland. In: Stemmerik, L. & Stouge, S. (eds): The Jurassic of North-East Greenland. Geological Survey of Denmark and Greenland Bulletin 5, 51–71 (this volume).
Jurassic dinoflagellate cysts from Hochstetter Forland, North-East Greenland Stefan Piasecki and Lars Stemmerik Three sections in Hochstetter Forland, North-East Greenland, referred to the Jurassic Payer Dal and Bernbjerg Formations, have been analysed for dinoflagellate cysts. The dinoflagellate cysts, new finds of ammonites and previously recorded marine faunas form the basis for improved dating of the succession. The basal strata of the Payer Dal Formation at Kulhus is here dated as Late Callovian, Peltoceras athleta Chronozone, based on the presence of relatively abundant Limbicysta bjaerkei, Mendicodinium groenlandicum, Rhychoniopsis cladophora and Tubotuberella dangeardii in an otherwise poor Upper Callovian dinoflagellate assemblage. Ammonites have not been recorded from these strata. The upper Payer Dal Formation at Agnetesøelven is dated as Late Oxfordian, Amoeboceras glosense – Amoeboceras serratum Chronozones, based on the presence of Sciniodinium crystallinum, together with Cribroperidinium granuligera and Stephanelytron sp. The age is in accordance with ammonites present in the uppermost part of the formation at Søndre Muslingebjerg. New ammonites in the Bernbjerg Formation at Agnetesøelven together with dinoflagellate cysts indicate an earliest Kimmeridgian age, Rasenia cymodoce and Aulacostephanoides mutabilis Chronozones. The Upper Callovian dinoflagellate cysts from Hochstetter Forland belong to a local brackish to marginal marine assemblage, which only allows a fairly broad correlation to coeval assemblages in central East Greenland. In contrast, the Oxfordian and Kimmeridgian assemblages are fully marine and can be correlated from Milne Land in central East Greenland via Hochstetter Forland to Peary Land in eastern North Greenland. Keywords: ammonites, Boreal, dinoflagellate cysts, Hochstetter Forland, Jurassic, North-East Greenland Geological Survey of Denmark and Greenland, Øster Voldgade 10, DK-1350 Copenhagen K, Denmark. E-mail: sp@geus.dk The northernmost onshore Jurassic outcrops in East Greenland occur in Hochstetter Forland and, some 60– 80 km farther north, on Store Koldeway (Fig. 1); the stratigraphy of the latter area is described in an accompanying paper (Piasecki et al. 2004a, this volume). The Hochstetter Forland peninsula is dominated by flat lowlands dissected by small streams; outcrops of pre-Quaternary sediments are restricted to stream cuts and low coastal cliffs scattered throughout the region (Fig. 1). However, at Søndre Muslingebjerg to the south, Caledonian basement and Middle–Upper Jurassic sandstones and coals are faulted and reach up to approximately 400 m above sea level. Caledonian basement Geological Survey of Denmark and Greenland Bulletin 5, 89–97 © GEUS, 2004 GEUS Bulletin no 5.pmd 89 29-10-2004, 11:14 and Jurassic sediments also crop out in northern Hochstetter Forland, east of Agnetesø, and the meanders of Agnetesøelven (the river from Agnetesø to the coast) erode into marine Jurassic sediments deposited on basement rocks (Fig. 1). The Jurassic stratigraphy of the Hochstetter Forland area is based on records of marine faunas including ammonites from several isolated exposures (Ravn 1911; Surlyk 1978). The lowermost deposits consist of the non-marine to marginal marine Muslingebjerg Formation, which is undated owing to the absence of marine fossils. The overlying sands of the Payer Dal Formation contain Upper Oxfordian ammonites in the upper 89
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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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GEUS Bulletin no 5.pmd 13 29-10-200
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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
Page 37 and 38: Cadoceras cf. nordenskjoeldi Callom
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Page 43 and 44: Fig. 1. Sketch-map of the Jameson L
Page 45 and 46: Table 1. Measurement of dimensions
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Page 51 and 52: A new Middle-Upper Jurassic success
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Page 55 and 56: System Ma 159.4 154.1 164.4 169.2 1
Page 57 and 58: Sedimentary structures Biota Struct
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Page 61 and 62: Fig. 7. Log panel giving a broadly
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Page 67 and 68: with the presence of a minor angula
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Page 71 and 72: elly mass-flow deposits. In: Koster
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Page 77 and 78: Bernbjerg Formation Payer Dal Forma
Page 79 and 80: Depositional environment. The prese
Page 85 and 86: Metres 30 20 10 Hold with Hope, Loc
Page 87: Correlations The Pelion Formation o
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
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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
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