Abstract
As the works on the petrology of the Danish sediments are only few and far between in the literature, the author of the present work has commenced upon an examination of these sediments. The author has made a commencement with the Paleocene, owing to the interesting sedimentary-petrological problems connected with it. In the Cretaceous we have sediments which mostly are organogenous or chemical calcareous rocks; in the Paleocene on the contrary the rocks are for the most part terrigenous elastic sands, marls and clays. Therefore, as the Paleocene lies transgressively over the Cretaceous, the boundary between the two represents a turning-point, both palaeogeographically and petrologically. Many characteristics in the series and the rock-types prove to be connected with this circumstance. Great weight has been attached in this work to a thorough analysis of the rocks, and consequently the greater part of it treats of the outcrops, from which abundant material could be procured for the investigation. The material from borings through the Paleocene has been employed for elucidating the facies-variations in the series in different parts of the country.
Highlights
The rocks which are the subject of this work are those which are usually called Paleocene in Denmark
Any doubt can be entertained that this type of limestone is the youngest of the lime-sand deposits. This is argued by its character of a shallow-water sediment and its glauconite content, and by the fact that much the greater number of limestone pebbles occurring in the Paleocene basal conglomerate are of this type
The· Danian lime-sand has partly been hardened before the greensand was deposited, for RosENKRANTZ has observed crevices in the Saltholm limestone filled with crystalline calcite extending up to the boundary against the Paleocene (1924)
Summary
Some of the material investigated was in the Mineralogical Museum of the University of Copenhagen (rocks from Copenhagen and Tune, some boring samples) , and a large part of the boring samples were the property of Denmark 's Geological Survey. To Dr VICTOR MADSEN, the Director of Denmark's Geological Survey, I am deeply indebted, and I wish to thank him for having undertaken to include this work among the publications of the Institution. Without his interest and kindness the work would scarcely have made its appearance, and in any case not in the form in which it is presented.
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