Published online by Cambridge University Press: 01 May 2009
Early in the year 1913 the Copenhagen Museum of Mineralogy and Geology issued a report upon a most interesting deep boring in the Chalk at Gröndal, just outside Copenhagen. The results are so striking in respect to the thickness of chalk passed through that it appears desirable to bring them before the notice of English geologists. The estimates of the thickness of the English Chalk which are considered to be the most reliable are those given by Rowe from measurements of the various zones in the Isle of Wight and Dorset. These are approximately as follows:—
1 Dybdeboring ved Köbenhavn, 1894–1907, Bonnesen, Ved E. P., Böggild, O. B., Ravn, Og J. P. J., Copenhagen, 1913.Google Scholar