File:The Quarterly journal of the Geological Society of London (13889888088).jpg

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596
C. EICKETTS ON THE EKEATICS ITi THE
greater axis somewhat removed from the perpendicular with a
small detached portion lying nearly at a right angle to its original
position, the thinner and lower part not being entirely displaced,
through resting on a slight projection at the lower end of the
fracture (fig. 3).
Similar glaciated pebbles " split and shattered by the frost " into
fragments which still remain exactly in apposition are, in many
districts, buried in moraine accumulations formed on land. These
fractures must have occurred subsequently to the envelopment of
the blocks in glaciers, otherwise the pieces could not have con-
tinued so accurately in position whilst moving beneath such a burden.
Pig. 3. — Silurian pebble split, separated, and dAsplaced, as in situ in
Boulder-clay, Rock Ferry. (One third natural size.)
Some erratics are so sculptured into forms dependent on differences
in their texture, that the less easily disintegrated portions, and the
harder materials filling shrinkage -joints, stand prominently in relief ;
some are so fashioned and modelled that every bed, however thin, is
Pig. 4. — WeatJiered block from
Boulder-clay. (One third
natural size.)
Fig. 5. — Weathered block with
smoothed surfaces from
Boidder-clay. (One third
natural size.)
X . Smoothed surfaces.
conspicuous. There exists a great similarity between some such spe-
cimens from the Boulder-clay and others in moraine accumulations

(compare figs. 4-7). This is remarkably the case with two from a
Date
Source https://www.flickr.com/photos/biodivlibrary/13889888088
Author Geological Society of London
Full title
InfoField
The Quarterly journal of the Geological Society of London.
Page ID
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37047476
Item ID
InfoField
114009 (Find related Wikimedia Commons images)
Title ID
InfoField
51125
Page numbers
InfoField
Page 596
BHL Page URL
InfoField
https://www.biodiversitylibrary.org/page/37047476
Page type
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Text
Flickr sets
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  • The Quarterly journal of the Geological Society of London. v. 41 (1885).
Flickr tags
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Flickr posted date
InfoField
30 April 2014
Credit
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This file comes from the Biodiversity Heritage Library.

This tag does not indicate the copyright status of the attached work. A normal copyright tag is still required. See Commons:Licensing.

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This image was originally posted to Flickr by BioDivLibrary at https://flickr.com/photos/61021753@N02/13889888088. It was reviewed on 26 August 2015 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-2.0.

26 August 2015

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current03:56, 26 August 2015Thumbnail for version as of 03:56, 26 August 20151,183 × 2,018 (452 KB)Fæ (talk | contribs)== {{int:filedesc}} == {{BHL | title = The Quarterly journal of the Geological Society of London. | source = http://www.flickr.com/photos/biodivlibrary/13889888088 | description = 596 <br> C. EICKETTS ON THE EKEATICS ITi THE <br> greater axis somewhat...

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