Page 66 - Introduction to Paleobiology and The Fossil Record

FOSSILS IN TIME AND SPACE 53

FINNMARK

TROMS
FINLAND
Trondheim (EO)
Toquima - Table Head fauna NORRBOTTEN
Støren Nappe
Köli Nappe

Jotun Nappe VÄSTERBOTTEN

Otta (EO) Valdres Nappe
Celtic-type fauna

Trondheim Caledonian Fron JÄMTLAND
Valdres (EO) NORWAY
Baltic fauna

Oslo belts
Bergen SWEDEN

Oslo ?
North Estonian
Confacies
Hardangarvidda Central Baltoscandian Confacies
(EO) Baltic Ringerike (MS)
marginal fauna ORS facies fauna
Livonian Tongue
GOTLAND
ÖLAND
0 300 Km
Scanian Confacies
BORNHOLM

Figure 2.20 The Scandinavian Caledonides showing the pre-drift positions of some of the various
thrust sheet complexes. During the Early Ordovician (EO) the most seaward, upper parts of the
higher thrust sheets (Støren Nappe) contained North American marginal faunas, whereas the
lower parts of these thrust sheets (Köli Nappe) contained Celtic (oceanic) type faunas. The lower
parts of the nappe pile (e.g. the Valdres Nappe) have Baltic faunas. The Wenlock-Ludlow (MS)
marginal molasse deposits (Old Red Sandstone (ORS) facies), for example at Ringerike, have
spectacular marine marginal faunas.