TABULAE VIEW OF THE GLACIAL 



MAKINE TYPES. 



POST-GLACIAL PEKIOD. 



Subaqueous. 

 (Land about 25 

 teet below its pre- 

 sent level in mid- 

 dle stage— b.) 



c. Foraminiferous mud (calcareous) now forming in the depths c 

 Atlantic. — Deposits forming around British coasts. 



b. Glasgow canoe-sands. 



a. Shell-sands overlying Carnon and Pentuan (Cornwall) silt, >i 

 taining human remains (Colenso). 



Subaerial. 

 (Land probably 

 200 feet above its 

 present level in 

 middle stage — 6.) 



c. 



b. Dogger-bank My a truncata bottom (King). 



(The land being at a higher level than it is at present, no ro 1 

 deposits could be formed on it.) 



a. 



Subaqueous. 

 (Land probably 

 300 feet below its 

 present level in 

 middle stage — b.) 



c. 



b. Belfast Thracia convexa clays (Hyndman). — Probably such ci 

 raised beaches as contain only existing British shells, e.g. i 

 rush (Antrim), — especially of Scotland (Landsborough, a 

 ford, Jeffreys). 



a. 



GLACIAL PERIOD. 



Third (Subaerial) epoch. 

 (During the middle stage, b, 

 the land possibly reached an 

 elevation of 700 feet or more 



above its present level.) 



c. 



b. (Much of the bed of the German Ocean above the sea. — F).< 

 England, and Ireland connected.) 



a. Astarte arctica bottom, off Fern Isles, Northumberland (Kin. 



Second (Subaqueous) epoch. 



(During the middle stage, b, 

 the land was probably upwards 

 of 2000 feet below its present 

 level.) 



Erratic blocks (many fo- 

 reign) transported by icebergs 

 during the entire epoch. 



transported 5g£f§fll 

 from low to HlU 

 high levels. terraces. 



c. Pagham (Sussex) "marine gravel" (Godwin- Austen). — I s 

 (near Hull) Natica clausa gravel (Phillips, Prestwich). — o 

 wood Park (Sussex) shell gravel (Prestwich). — Brighton 3d 

 nish, and Devonshire raised beaches. — Howth (Dublin) Cy?A 

 Chione gravel. — Wolverhampton Astarte arctica gravel (Lei 



Lancashire erratic-block-shell drift (Gilbertson, Murcsti 

 Binney) . — Wicklow, Londonderry, and Antrim Leda oblong la 1 

 (Portloek, Oldham). — Pagham (Sussex) "yellow clay wit 

 nite blocks" (Godwin-Austen). — Kyles of Bute Pecten Mm 

 cus clay (Smith, of Jordan Hill) . 



/ b. Moel-Tryfaen (Caernarvonshire) shell drift, — littoral ( J. Trin e: 

 — Airdrie (Lanarkshire) Telling, calcarea clay,— pelagic (( lis 



[a. 



Eirst (Subaerial) 

 epoch. 

 (During the middle 

 stage, b, the land pro- 

 bably attained an ele- 

 vation of more than 

 1300 feet above its 

 present level. No 

 part of the British 



Isles 1 JCIK'Ivtll the sou 



during the entire 

 epoch.). 



c. 



b. (The bed of the German Ocean and the Irish Atlantic 200-fa »m 

 submarine plateau subaerial.) 



a. 



PLIOCENE 

 PERIOD. 

 (Latest portion.) 



Bed of German Ocean strewed over with Scandinavian iceberg in 

 ported blocks, which frequently afterwards, especially in next ] i< 

 became mingled with British field-ice drift; thereby produei 1 

 mixed unstratified till of north of England. — (See column of La ai 

 Freshwater deposits, Glacial period.) — ? Pagham (Sussex) L; ai 

 rwjosa mud deposit (Dixon). — Runton (Norfolk) Leda my a ei 

 (J. Trimmer). 





