"^^1* 55'] CHALK AND DEIFT IN MOEN AND EtJGEN. 313 



the strike being about north-north-west and the iaclination, if any, 

 to the eastern side. But a second pit, perhaps ^ mile away inland, 

 shows similar sands lying almost horizontal. A third pit, imme- 

 diately east of the Stubbenkammer road and a short distance from the 

 southern edge of the forest, larger but not deeper than the first, gives 

 sections of similar sands, which, however, contained a long ' pocket' 

 of rather angular flints, with pebbles of chalk (small and few) and 

 of Scandinavian rocks up to about 1 foot in diameter. Here the 

 bedding has a very slight easterly dip, but on that side of the pit it 

 seems to become somewhat steeper and to be twisted rather towards 

 the north. A little fine rubble underlies the turf in one or two 

 places, and larger boulders (Scandinavian rock) are seen on the floor 

 ,of the pit.^ This sand probably is of later date than the one inter- 

 bedded with the clays/ belonging, as we infer from the geological 

 map by E,. Lepsius, to the Oberdiluvium, and corresponding with 

 that mentioned in our description of Moen ; but in any case the 

 marked change in the angle of dip is significant. 



We come next to a group of sections which are important, as they 

 indicate the mode in which the Drift occupies cavities in the Chalk. 



(a) The first is exposed in the cliffs, here about 30 feet high, on 

 the north side of the bathing-place at Sassnitz. Here we find 

 a very irregular cavity in the Chalk, which spreads out hori- 

 zontally to an extent of about 12 yards and cuts across the layers 

 oi flint. It is filled with Drift-material, varying from clay to sand, 

 .and containing two or three boulders. In this neighbourhood the 

 ^Chalk is much bent, and probably some small thrust-faults occur, 

 which, however, produce no appreciable effect on the mass as a 

 whole. A somewhat similar filled-up cavity of smaller size may be 

 ^found north of the Kielerbach. 



(b) The following sections were observed in pits on the slope 

 'between the southern border of the forest and the road leading 

 -eastward from Sassnitz. Probably these are almost due north of 

 ?the last-named section. The Drift hereabouts seems generally thin, 



^ These had pi-obably been lying on the surface (where they certainly are not 

 .uncommon), for none like them were seen in the sand. 



^ We have examined under the microscope specimens of the sand from the 

 pit in the wood near Sassnitz and from that between the clays (Wissowerbach). 

 The former consists mainly of quartz (a few grains composite), some felspar 

 (including microeline and plagioclase), a few fragments of a pyroxenic mineral 

 (probably hornblende), zircon, glauconite, biotite (?), garnet (?), fragments of 

 calcareous organisms (rather worn), a small rotaline (?) foraminifer, a few 

 opaque grains, some possibly cherty. The latter, besides the dominant quartz, 

 contains felspar (not generally showing twinning), a little hornblende, tourma- 

 line, zircon, rutile(?), Ahitemica(?), garnet (?), chlorite (?), some opaque grains, 

 .and a few of organic origin, as before. In both cases the structure in the last 

 is very indistinct, and they are probably derived from the Chalk. In the former 

 specimen the grains appear to be slightly more rounded, but the most marked 

 difference is in size. Here they commonly measure about '02 inch in diameter, 

 hardly ever exceeding -033 inch, but with a good many less than the average. 

 In the Wissowerbach specimen they are more uniform, the average being about 

 '005 inch. It would not be safe to generalize from single examples, but the 

 difference accords with the impression formed in the field. 



