The Quarterly journal of the Geological Society of London . Vol. 70.] GLACIAL GEOLOGY OF EAST LANTCASHIKE. 229 Fig. 1. This indicates approximately the area covered by the ice-sheet whenat its greatest development. The ice-sheet extended beyond thePennine watershed, a large lobe crossing north of Boulsworth Hillinto Airedale; and two smaller lobes, one crossing south of BlackHameldon and the other east of Shore Moor, formed a combinedstream in Upper At this stage, the ice had almost completely retreated west of the Penninewatershed, except the lobe which (although steadily dimini
The Quarterly journal of the Geological Society of London . Vol. 70.] GLACIAL GEOLOGY OF EAST LANTCASHIKE. 229 Fig. 1. This indicates approximately the area covered by the ice-sheet whenat its greatest development. The ice-sheet extended beyond thePennine watershed, a large lobe crossing north of Boulsworth Hillinto Airedale; and two smaller lobes, one crossing south of BlackHameldon and the other east of Shore Moor, formed a combinedstream in Upper At this stage, the ice had almost completely retreated west of the Penninewatershed, except the lobe which (although steadily diminishing)continued to enter Airedale throughout all the stages here were held up by the ice-barrier, and their surplus waters weredischarged across the Pennines into Calderdale. The summit ofWinter Hill appeared above the ice-sheet. Figs. 3 & 4. A further retreat of the ice-barrier led to the production of largelakes in the upper valleys of the Irwell and Roch, and of a smallerseries in the Babble basin, west of Boulsworth Hill and BlackHa
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Keywords: ., bookcentury1800, bookdecade1840, bookidquarte, booksubjectgeology
