THE GEOLOGICAL RESULTS OF THE EXCUR- 

 SIONS OF THE YEAR 1914, 



TO WHICH IS ADDED DETAIL OF THE WORK OF THE YEAR, 

 TOGETHER SERVING AS THE REPORT OF THE GEOLOGICAL 



SECTION. 



BY MR. A. 



The Geological Section has found no new levels for raised 

 beaches, but the evidences of a recent submergence involving 

 a part of l'Ancresse Common have been met with. This 

 strengthens the evidence from the Marais and from the 

 LTslet Dolmen. 



The discovery of the old land surface, to be described 

 later, gives proof that the 25' raised beach has suffered erosion 

 and is therefore only a remnant of its original deposit. 



It now seems possible to differentiate between the hori- 

 zontal loess of the cliffs and the thick clay deposits, but more 

 work of a chemical nature has to be done in order to complete 

 this work. 



In rock detail the Section has nothing new to report. 

 The excursions of the summer have given good results and 

 new fields have been opened up. 



The excursion to Rousse has proved to be somewhat pro- 

 lific in results. Taking the Geological sectional work first I 

 have to report that a bed of very old date, but so far not 

 correlated with any other in the island, was placed in its 

 proper order of succession as regards two of the previously 

 ascertained deposits. 



To make the detail clear to you I must ask yon to recall 

 the fact that the Dolmen recently discovered at L'Islet rests 

 on the 25-ft. beach. I have also to remind you that the 

 makers of that Dolmen had scooped out a peculiar sandy de- 

 posit which, for want of a better designation, I then called a 

 " black sand." It was not, however, an ordinary sand but a 

 sandy deposit, with enough black carbonaceous matter to give 

 it a black colour. 



This I think can better be described as a peaty sand, for 

 evidently the layer was originally a land surface which became 

 peat and by lapse of time lost the bulk of its vegetable mat- 

 ter, becoming peat first then a discoloured sand, its organic 

 matter and clay having been gradually carried away by the 

 water to which it was permeable. 



