Some Pollen Diagrams from the Clay District in the Provinces of Groningen, Friesland and North-Holland (Netherlands)( Pl. XX-XXIV, figs. 57-59)

Abstract

(pp. 127-128)

The position of the profiles from wich the pollen diagrams to be discussed in this paper were prepared is indicated in the Figs. 57 and 59. It is true that the Opende profile lies some km outside the clay district; but since the diagram from this profile provides information on the invasion of the sea in the area north of that site it has been included in this discussion. It should be stressed that the discussion is confined to the results of the palynological investigation. For a survey of the holocene genesis of the western part of the province of Friesland and of Westfriesland (province of North-Holland) the reader can be referred to the papers of Wensink (1958) and Pons & Wiggers (1959, 1960).