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The “Throw” of a Fault. With illustrations from the Aberystwyth Grits

Published online by Cambridge University Press:  01 May 2009

John Challinor
Affiliation:
(University College of Wales, Aberystwyth.)

Extract

WHEN a bedding-surface is faulted, a large number of quantities, of more or less significance, may be considered.

The elements involved are: (1) the fault-surface, (2) the net relative movement along it, (3) the bedding-surface, and (4) the surface of outcrop or measurement.

Type
Original Articles
Copyright
Copyright © Cambridge University Press 1933

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References

page 387 note 1 Reid, H. F. and others: “Report of the Committee on the Nomenclature of Faults,” Bull. Geol. Soc. America, xxiv, 1913, 163.CrossRefGoogle Scholar

page 387 note 2 Willis, B. and Willis, R.: Geologic Structures, 2nd ed., 1929.Google Scholar

page 389 note 1 In referring to these three lengths in a general way, the terms AX, AY, and AZ will be used here.Google Scholar

page 389 note 2 pp. 127–8.Google Scholar

page 390 note 1 Cf. Geologic Structures, fig. 78, p. 148.Google Scholar

page 391 note 1 Although Leith, C. K. in his authoritative work Structural Geology (revised edition, 1923, 66) expressly defines “throw” as “net vertical displacement … the vertical component” [of movement]—i.e. as the length AX. The present writer has also defined it as such (in J. Platt and J. Challinor, Simple Geological Structures, 1930, 23).Google Scholar

page 392 note 1 Bailey, E. B., Geol. Mag., LXVII, 1930, 86.Google Scholar

page 392 note 2 Geol. Mag., LXVI, 1929, 354.Google Scholar