. Geological magazine. nesian limestone, and other rocks,with a good deal of calcareous matter coating some of the pebbles,in a ground-up form, and in minute crystals. Among the pebbles Ifound what seems to have once formed the extremity of a sea-wornpinnacle (for it was ribbed or fluted horizontally) of fine-grainedgreenish Cambrian (?) sandstone. Eesting on the conglomerate wasa thin bed of grit cemented into cakes by calcareous matter, thenabout two feet of bluish-grey soft bleached sand, irregularly bedded,but having a general slope at about 5°, and passing under theKeuper. False-bedding w
. Geological magazine. nesian limestone, and other rocks,with a good deal of calcareous matter coating some of the pebbles,in a ground-up form, and in minute crystals. Among the pebbles Ifound what seems to have once formed the extremity of a sea-wornpinnacle (for it was ribbed or fluted horizontally) of fine-grainedgreenish Cambrian (?) sandstone. Eesting on the conglomerate wasa thin bed of grit cemented into cakes by calcareous matter, thenabout two feet of bluish-grey soft bleached sand, irregularly bedded,but having a general slope at about 5°, and passing under theKeuper. False-bedding was shown here and there, with partingsof strings of pebbles. In nothing but the absence of sea-shells didthese beds differ from recent raised beaches met with on sandycoasts at the present day. The pebbles are all similar to thosefound in the Upper Bunter, while the sandstone is evidently re-deposited Bunter ; so this conglomerate may possibly throw somelight on what happened in England during the interval between the. Lower Keuper, with tlie Conglomerate, resting on Bimter—Turner Street, Nottingham. (Eeduced from a pen and ink sketch by the author.) Bunter and the Keuper subdivisions. The manner in which thisconglomerate rests on the Bunter is well shown in the above sketchtaken from a section in Turner Street, Nottingham. The conglomerate is surmounted by thin and thick bedded red Rev. T. G. Bonney—Pitchsto7ies and Fehites of Arran. 499 sandstone with marl partings. I have not attempted to trace thisconglomerate farther north than Eed Hill, four miles and a half fromNottingham. It is there seen, however, in a rather different formto what I have described it at Nottingham. Mr. Aveline thus re-fers to it:—• On the east of the road south of Ked Hill may beseen some thick beds of very coarse half-consolidated sandstoneof a yellow and reddish-brown colour, containing pebbles of quartz,and on these lie beds of red sandy marl with bands of fine-grainedyellow sandstone; the
Size: 2929px × 853px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorwoodward, bookcentury1800, bookdecade1870, bookyear1877
