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VIII.—Bursting Rock Surfaces

Published online by Cambridge University Press:  01 May 2009

T. McKenny Hughes
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Extract

The interesting note by Mr. Strahan in the Geol. Mag. for September, 1887, on explosive slickensides, reminded me of some similar phenomena which were not of unfrequent occurrence near Dent Head and Ribble Head in Yorkshire.

In the limestone quarry from which the black marble of Dent is procured the workmen found that, when they were quarrying the lower beds and struck the rock with a pick or bar, fragments flew up into the air with greater force than, could be due to their blow and in an unexpected direction.

Type
Original Articles
Information
Geological Magazine , Volume 4 , Issue 11 , November 1887 , pp. 511 - 512
Copyright
Copyright © Cambridge University Press 1887

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