Abstract
A miospore assemblage composing 80 species is recorded from Lower Carboniferous strata in the Ørslev No. 1 borehole, island of Falster, Denmark. 45 spore types are referred to known species and 6 are proposed as new. The remaining forms are described with open nomenclature.The present knowledge of the Lower Carboniferous microfloras and their distribution within NW. Europe is briefly summarized. It is shown, that the Ørslev assemblage has a composition very close to that of the Lycospora pusilla (Pu) Zone assemblages from Scotland and northern England. Outside NW. Europe it shows affinities to spore assemblages described from eastern Canada and the south-west areas of the Soviet Union. The stratigraphical implications of these correlations are discussed. By means of indirect correlations the spore containing beds are referred to the Belgian Upper Tournaisian or Lower Viséan.
Highlights
In Denmark deposits of Carboniferous age were recorded with certainty for the first time in the 0rslev No 1 borehole
It seems to prove that the spore producing plant community growing along the southern edge of the former "Old Red Continent" was uniform over long distances
Semi-arid environments seem to have been necessary for the formation of the Cementstone facies in Canada and Scotland (BELT et al 1967, NEVES and BELT 1970) and may have existed within the Danish area
Summary
In Denmark deposits of Carboniferous age were recorded with certainty for the first time in the 0rslev No 1 borehole 1 shows the location of the borehole on the island of Falster in the southern part of the country. A series of Upper Permian (Zechstein) evaporites, 750' (229 m) of reddish shales, siltstones and sandstones, tentatively assigned to the Upper Carboniferous or Lower Permian (Rotliegendes) were recorded. These in turn are underlain, between 6740' (2051 m) and the base of the bore at 8440' (2573 m), by a series of alternating grey and black claystones (shales), marlstones and limestones, generally containing a rich benthonic fauna of brachiopods, corals, crinoids, foraminifera and ostracods
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