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Stratigraphie Der Jurabildungen Ostgrönlands O o V I MEDDELELSER OM GRÖNLAND UDGIVNE AF KOMMISSIONEN FOR VIDENSKABELIGE UNDERS0GELSER I GRÖNLAND B d. 132 • N r. 2 GEOLOGISK EKSPEDITION TIL 0STGR0NLAND 1936—38 Under Ledelse af Lauge Koch STRATIGRAPHIE DER JURABILDUNGEN OSTGRÖNLANDS ZWISCHEN HOCHSTETTERBUGTEN (75°N.) UND DEM KEJSER FRANZ JOSEPH FJORD (73° N.) VON WOLF MAYNC MIT EINER ÜBERSICHTSKARTE, 38 FIGUREN IM TEXT UND 7 TAFELN K0BENHAVN C. A. REITZELS FORLAG BIANCO LUNOSBOGTRYKKERI 1947 Pris: Kr. 11.00. O MEDDELELSER OM GRÖNLAND UDGIVNE AF KOMMISSIONEN FOR VIDENSKABELIGE UNDERS0GELSER I GRÖNLAND B d. 132 • N r. 2 GEOLOGISK EKSPEDITION TIL 0STGR0NLAND 1936—38 Under Ledelse af Lauge Koch STRATIGRAPHIE DER JURABILDUNGEN OSTGRÖNLANDS ZWISCHEN HOCHSTETTERBUGTEN (75°N.) UND DEM KEJSER FRANZ JOSEPH FJORD (73° N.) VON WOLF MAYNC MIT EINER ÜBERSICHTSKARTE, 38 FIGUREN IM TEXT UND 7 TAFELN K0BENHAVN C. A. REITZELS FORLAG BIANCO LUNOS BOGTRYKKER1 INHALT Seite Vorwort................................................................................................................................... 5 Einleitung............................................................................................................................... 7 I. Stratigraphische E in zelp rofile................................................................... 11 A. Kuhn In sel........................................................................................................... 11 1. Profil am Kingofjaeldet (P. 1034 m ).......................................................... 14 2. Profil in der Ugpik-Ravine......................................................................... 18 Umingmak-Ravine/Bernbjaerget (P. 620 m ).............................................. 22 3. Vorkommen im Amoebites-Elv................................................................... 23 4. Konglomeratrücken........................................................................................ 25 5. Die Jurasedimente am StrandclifT der südwestlichen Kuhn Insel.. 27 6. Das Volgien in der Umgebung der »Haakonshytta«.......................... 28 7. Die Juraprofile an der Südostküste der Kuhn Insel (Kuhn-Schichten) 36 B. Th. Thomsens Land.......................................................................................... 43 8. Das Juraprofil südlich der »Blaabaerhytten«........................................... 46 G. W ollaston Forland......................................................................................... 51 9. Das Juraprofil am Hohgant (P. 668 m)................................................ 63 10. Profil am Sauruspasset (230 m). ;............................................................ 60 11. Profile an der Nordflanke des Niesen (P. 688 m ).............................. 61 12. Aufschlüsse im Slaededalen.......................................................................... 68 13. Profil am Nordosthang des Aucellabjaerget (P. 950 m) .................... 69 14. Profil an der Rigi (P. 484 m) ................................................................... 73 15. Profil südlich des Zackenbergpasset, Lindemansdalen...................... 78 16. Juraprofile im Cardiocerasdal und am Cardiocerasbjaerg(P. 858 m) 83 17. Westflanke des Stratumbjaerget (P. 657 m )........................................... 90 18. Profil vom Sandstendalen hinauf zum Stratumbjaerget (P. 657 m) 91 19. Profil im Skiferdal........................................................................................ 94 20. Die Jura Vorkommen im Perm- und Brachiopoddal.......................... 95 21. Der Jura am Kuppelpasset....................................................................... 96 22. ? Jura Vorkommen im Graensedalen und am Permpasset................. 97 23. Profil südwestlich des Bern Plateau (Brorsons Halbinsel)............. 98 24. Profil nördlich des Sumpdalen ................................................................. 100 25. Juravorkommen im Gebiet südlich der Albrechts Bugt.....................101 26. Profile nördlich des Hämmeren (Antoinette’s Bjaerg P. 992 m). .. 102 D. Glavering I n s e l............................................................................................... 106 27. Profil am KüstenclifT zwischen Dolomitdal und Djaevlekloften (zu P. 546 m der Troldmarkerne)..................................................................... 108 28. Juravorkommen im Dolomitdal............................ 113 Seite 29. Profil am Südhang der Troldmarkerne (sog. »Erster Weisse«).. 115 30. Das Vorkommen von Kimeridgien an der Küste (nordwestlich der Basalt Insel...................................................................................................... 117 II. Lithologie und Faziescharakter der nordostgrönländischen Jurasedim ente.......................................................................................................... 119 a. Gelbe Serie................................................................................................................ 120 b. Graue Serie.............................................................................................................. 127 c. Schwarze Serie (Amoebites-Schichten) ............................................................ 128 d. JCubn-Sc'hichten....................................................................................................... 131 e. Rigi-Serie.................................................................................................................. 133 III. Lagerung und stratigraphisch-palaeogeographische Verhält­ nisse der ostgrönländischen Jurabildungen......................................... 138 Allgemeines..................................................................................................................... 138 Vergleich unseres Gebietes mit anderen Teilen Ostgrönlands...................... 145 Hochstetter Forland............................................................................................... 146 Grosse Koldewey Insel........................................................................................... 148 Danmarkshavn (Germania Land)....................................................................... 152 Geographical Society und Traill Inseln.......................................................... 153 Scoresby Land.......................................................................................................... 156 Jameson Land und Milne Land......................................................................... 157 IV. Über die Beziehungen des Jura Ostgrönlands mit anderen borealen Juravorkom m en................................................................................ 187 Spitzbergen................................................................................................................ 188 Andöy (Lofoten)....................................................................................................... 193 König Karl Land ................................................................................................... 194 Franz Joseph Land................................................................................................. 196 Novaya Zemlya....................................................................................................... 197 Sibirien........................................................................................................................ 198 Alaska........................................................................................................................ 202 V. Über die palaeogeographischen Zusammenhänge der borealen Juraprovinz mit südlicheren Meeresregionen......................... 208 Migrationen und Faunenaustausch....................................................................... 211 Bibliographie........................................................................................................................... 219 VORWORT ber die vom Verfasser in Ostgrönland während der dänischen »Zwei- Jahres-Expedition« Dr. Lauge Koch’s in 1936—1938 durchge­ führten stratigraphischen Untersuchungen in der postdevonischen UKüstenzone soll in einer Reihe von Abhandlungen berichtet werden. In einigen kurzen Rapporten sind die wichtigsten geologischen Ergebnisse dieser Erforschung schon summarisch dargestellt worden (Lit. Maync 1938, 1939, 1940), und eine Monographie über Stratigraphie und Faziesverhältnisse der oberpermischen Ablagerungen Ostgrönlands ist bereits erschienen (Lit. Maync 1942). Der Verfasser hat es daraufhin unternommen in der Folge seine in Ostgrönland gemachten Beobachtungen und zum Teil in den Polar­ nächten ausgearbeiteten Resultate über die Stratigraphie des ostgrön­ ländischen Mesozoikums herauszugeben, wovon nun der erste Teil über den Jura zwischen Hochstetterbugten und dem Kejser Franz Joseph Fjord vorliegt. Da der Verfasser im Januar 1940 nach Niederländisch-Indien über­ siedelte, ergaben sich grosse Schwierigkeiten für eine Publikation dieser Abhandlungen; denn erstens war hier natürlich die entsprechende Literatur nicht vorhanden, und ein Austausch stellte sich infolge des Krieges in Europa als unmöglich heraus. Zweitens war selbstverständ­ lich jeder Kontakt mit dem Expeditionsleiter sowie mit dessen Mit­ arbeitern unterbrochen. Besonders schmerzlich wirkte sich die Tatsache aus, dass der Verfasser so jegliche Fühlung mit seinem Arbeitsgefährten A ndreas Vischer (Basel) verlor, und aus diesem Grunde ein Gedanken­ austausch über mancherlei Probleme sowie eine gegenseitige Verständi­ gung über definitive Resultate
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