File:The Quarterly journal of the Geological Society of London (12736083873).jpg

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THE CORALLIAN ROCKS OF ENGLAND.
305
beds in the neighbourhood, we have no doubt that the red soil here
is the representative of the Upper Calcareous Grit ; but the sands
and clays below, being overlain by oolitic rock, which never occurs
in the tipper Calcareous Grit, and to which the red earth is uncon-
formable, and being in the position of similar beds at Highworth
and elsewhere, we take to be a continued representation of the
arenaceous form of the infra-coralline beds, the erosion being an
interesting indication of the wide separation in time of the oolite
shell-beds and the Coral Rag. These conclusions are confirmed by
sections at Marcham.
All the openings hereabouts are in somewhat the same horizon,
and carry on the sequence of the various divisions, till in the neigh-
bourhood of the last-named village the calcareous type of the infra-
coralline beds sets in, and we have Hag supported on beds of broken
oolite and oolitic brash. A very good example of this is seen in a
limepit near " Noah's Ark," a representation of which we give
without further description (fig. 6).
Fig. 6. — -Section at Noah's-Ark Lime/pit, Marcham.
(Total thickness, 10 ft. 6 in.)
1. Coral Bag. 2. Broken Oolite. 3. Oolite and Brash.
4. Shell Limestone. 5. Lower Calcareous Grit.
Elsewhere in the neighbourhood these brashy and oolitic beds
beneath the Rag are thicker ; but we need only give one illustrative
section, that in " Marcham field," whence doubtless, for many
a decade, the fossils have come which have been quoted from this
locality, and which every writer mentions. There are, however,
two quarries ; and it is the most southerly to which the following
description applies : —

Q..T. G. S. No. 130. x
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Source https://www.flickr.com/photos/biodivlibrary/12736083873
Author Geological Society of London
Full title
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The Quarterly journal of the Geological Society of London.
Page ID
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35818434
Item ID
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110705 (Find related Wikimedia Commons images)
Title ID
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51125
Page numbers
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Page 305
BHL Page URL
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https://www.biodiversitylibrary.org/page/35818434
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Text
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  • The Quarterly journal of the Geological Society of London. v. 33 (1877).
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Flickr posted date
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24 February 2014
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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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current18:52, 26 August 2015Thumbnail for version as of 18:52, 26 August 20151,866 × 3,200 (1.1 MB)Fæ (talk | contribs)== {{int:filedesc}} == {{BHL | title = The Quarterly journal of the Geological Society of London. | source = http://www.flickr.com/photos/biodivlibrary/12736083873 | description = THE CORALLIAN ROCKS OF ENGLAND. <br> 305 <br> beds in the neighbourhood,...

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