The Quarterly journal of the Geological Society of London . hem, treating them under the following heads:—(1) Tarnsnear Haweswater ; (2) Tarns between the Grasmere and LangdaleValleys; (3) Coniston Tarns; (4) Tarns between the DuddonValley and Wastdale; (5) Tarns in the Scawfell Group; and (6)Tarns between Borrowdale and Thirlmere. Vol. 51.] MR. J. E. MAKE ON THE TARNS OF LAKELAND. 37 II. Tarns near Haweswater. At the upper part of the Haweswater Valley are two of the mostpicturesque tarns in the district, namely, Bleawater at the foot ofthe High Street precipice, and Smallwater, below the Nan
The Quarterly journal of the Geological Society of London . hem, treating them under the following heads:—(1) Tarnsnear Haweswater ; (2) Tarns between the Grasmere and LangdaleValleys; (3) Coniston Tarns; (4) Tarns between the DuddonValley and Wastdale; (5) Tarns in the Scawfell Group; and (6)Tarns between Borrowdale and Thirlmere. Vol. 51.] MR. J. E. MAKE ON THE TARNS OF LAKELAND. 37 II. Tarns near Haweswater. At the upper part of the Haweswater Valley are two of the mostpicturesque tarns in the district, namely, Bleawater at the foot ofthe High Street precipice, and Smallwater, below the Nan BieldPass. The first is 1584 feet above sea-level, the second exactly100 feet lower. I visited Bleawater before I instituted a regular•examination of the tarns, but have notes that the first rock in situin the stream is about 50 feet vertically below the exit from thetarn, and that an enormous semicircular moraine hems in thelower end of the lakelet, having an apparent thickness in places ofconsiderably over 100 feet, so Fig. 2.—Plan of [For Explanation, see p. 47.] that there is no reason for sup-posing that this tarn is a rock-basin, but every reason for con-sidering that it is not. Fromwhat I remember of the tarn,I suspect, however, that therock may not be very far belowthe surface at the exit, thoughnot exposed, and that theoriginal valley, now moraine-blocked, lay to the north of thepresent exit. Smallwater, the first tarn which I examined with care, is fortu-nately also one which gives the most satisfactory proofs of theexistence of a former valley, now moraine-blocked,1 running parallelwith and at no great distance from the present stream which issuesfrom the tarn. It has not been sounded, but its comparativeshallowness may be inferred from the fact that the bottom is readilyvisible in certain lights for more than halfway across. The presentexit is at the north-eastern end of the lake, and the water runs oversolid rock immediately on quitting the lake
Size: 2057px × 1214px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1840, bookidquarte, booksubjectgeology
