File:The Quarterly journal of the Geological Society of London (1918) (14760138826).jpg

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Identifier: quarterlyjourna741918geol (find matches)
Title: The Quarterly journal of the Geological Society of London
Year: 1845 (1840s)
Authors: Geological Society of London
Subjects: Geology
Publisher: London (etc.)
Contributing Library: Smithsonian Institution Libraries
Digitizing Sponsor: Biodiversity Heritage Library

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by rivers; while in other cases they may havebeen inland lakes formed solely by river-waters, which may,however, have dissolved—from the rocks within their drainage-areas—oceanic salts that were deposited in earlier geological ages. If to these conditions we add change in temperature, also earth-movements which would at times cause one basin to open intoanother or cause diversion in river-drainage, and alteration inclimatic conditions, we have all the circumstances necessary forthe precipitation of mineral salts contemporaneously with thepeculiar sediments of such areas. We should not expect to findan unbroken sequence of saline deposits, such as would result fromthe steady and uninterrupted evaporation of a given amount of 1 Sir Archibald Geikie, Text-Book of Geology 4th ed. vol. i (1903) pp. 525 -31 ; F. W. Clarke, ; Data of Geochemistry 3rd ed. Bull. U.S. Geol. Surv.Ko! 616 (1916) pp. 226-28 ; J. L. A. Both, Allgemeine & Chemische Geologie vol. i (1879) pp. -163 et seqq. p2
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part 3) THE CHELLASTON GYPSUM BRECCIA. 177 sea-water, or of a given body of fresh water. We should ratheranticipate a varying set of conditions upon which changes mightbe rung. All this was in general admitted by J. G-. Goodchild, but hewas doubtful whether the exact balance between the influx ofwater into closed basins and the subsequent evaporation of thatwater could have been maintained for a sufficiently long periodto admit of the uninterrupted precipitation of such masses ofsulphate of lime as occur in our red rocks. He saysl that All the facts brought to light by a study of the closed basins of the presentday testify to the view that such forms of deposition are very exceptional.Instances are, in fact, unknown .... Variations in salinity have been therule, and not the exception. In all of them the prevailing mode of occurrenceof the chemical precipitates is that of thin sheets—varying from a few inchesin thickness to mere films of disconnected spangles—which are interleavedw

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https://www.flickr.com/photos/internetarchivebookimages/14760138826/

Author Geological Society of London
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(Reusing this file)		 At the time of upload, the image license was automatically confirmed using the Flickr API. For more information see Flickr API detail.
Volume
InfoField
1918
Flickr tags
InfoField
  • bookid:quarterlyjourna741918geol
  • bookyear:1845
  • bookdecade:1840
  • bookcentury:1800
  • bookauthor:Geological_Society_of_London
  • booksubject:Geology
  • bookpublisher:London__etc__
  • bookcontributor:Smithsonian_Institution_Libraries
  • booksponsor:Biodiversity_Heritage_Library
  • bookleafnumber:339
  • bookcollection:biodiversity
  • BHL Collection
  • BHL Consortium
Flickr posted date
InfoField
30 July 2014


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