Hostname: page-component-cd9895bd7-fscjk Total loading time: 0 Render date: 2024-12-24T16:06:24.318Z Has data issue: false hasContentIssue false

IV.—On Accumulation and Denudation, and their Influence in Causing Oscillation of the Earth’s Crust

Published online by Cambridge University Press:  01 May 2009

Extract

No fact in Physical Geology is more frequently recorded than a simultaneous occurrence of subsidence of the earth’s crust where deposition of sedimentary strata has been in progress. Reference is often made to the fact that the basement beds of different sedimentary formations were deposited in shallow water, and to the indications presented by subsequent deposits that they were accumulated in a sea of moderate depth. On them immense accumulations may have been deposited in successive strata, amounting even to miles in thickness; showing that with the deposition there has been a corresponding depression of the original surface. Though these phenomena are so inseparable in their occurrence and so well known, English geologists, until the last few months, have made little, it may even be said no endeavour, to determine whether they should be associated as cause and effect. This has not been the case with American geologists.

Type
Original Articles
Copyright
Copyright © Cambridge University Press 1883

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

page 302 note 1 The following are Croll’s words: “Prof. Hseckel may male any assumption he chooses about the age of the sun, but he must not do so in regard to the sun's heat. One who believes it inconceivable that matter can be created or annihilated may be allowed to maintain that the sun existed from all eternity, but he cannot be permitted to assume that our luminary has been losing heat from all eternity. “—Nature “ for Jan.10, 1878.

page 302 note 2 Palæontology of New York, vol. iii., Introduction. An account of Professor Hall's opinions is given in Chemical and Geological Essays, Essay V., by T. Sterry Hunt, LL.D., F.K.S.

page 303 note 1 The Geological History of the Colorado River and Plateaus,Nature, vol. xix. 1879, p. 251.Google Scholar

page 303 note 2 Proceedings of the Geological Society, vol. ii. p. 548.Google Scholar

page 303 note 3 Physical Geography, by Sir John F. W. Herschel, Bart., F.R.S., etc., $ 132.Google Scholar

page 303 note 4 About Volcanos and Earthquakes, Familiar Lectures, Lecture I. p. 11.Google Scholar

page 303 note 5 Hermite, V. H., Sur l'unitédes forces en Géologie,Compt. Rend. t. lxxxiv. pp. 459461, 510–512.Google Scholar

page 303 note 6 On the Origin of Species, by Charles Darwin, F.R.S., chap. ix., third edition, p. 313.Google Scholar

page 303 note 7 Subsidence and Elevation, and on the Permanence of Continents, Geol. Mag. Dec. II. Vol. VII. p. 241.304.Google Scholar

page 304 note 1 A Ramble in Shropshire, Proc. Birkenhead Lit. and Scient. Soc. 1865; A wooden Implement found in Bidston Moss, Proc.Liverpool Geol. soc. 18651866.Google Scholar

page 304 note 2 President's Address, byCharles Ricketts, Proc. Liverpool Geol.Soc., Session 1871–72. Also an abstract of the same, entitled “On subsidenc as the Effect of Accumulation," Geol. Mag. Vol. IX. p. 119, etc.Google Scholar

page 304 note 3 Physics of the Earth's Crust by the Rev. Osmond Fisher, M.A., F.G.S., p. 83. Referring to the Himalayan region, it was stated by myself in 1875, when replying to objections which had been raised, that the removal by denudation of those portions of the mass which once filled up the spaces now forming the valleys and passes of this great mountain range, must have diminished proportionately the amount of weight pressing upon the fluid substratum Should the sediment brought thence by the Ganges and Brahmapootra, and deposited in the Bay of Bengal, cause subsidence by its weight, it follows that the area from which the sediment has been derived must rise in proportion to the amount of material removed.—The Cause of the Glacial Period, by Charles Ricketts, Geol. Mag. Dec. II. Vol. II. p. 574, foot-note.Google Scholar

page 304 note 4 Principles of Geology, vol. i. chapters 18 and 19.Google Scholar

page 305 note 1 Principles, vol. i. chap. xix.Google Scholar

page 305 note 2 President's Address, by Charles Ricketts, Proc. Liverpool Geol. Soc. Session 18711872; also an abstract of the same, Geol. Mag. Vol. IX. 1872, p. 119.Google Scholar