File:The Quarterly journal of the Geological Society of London (12646259584).jpg

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1863..
DAY LIAS OF DORSETSHIRE.
283
able feature in the cliff, though very uninteresting to the collector.
They are succeeded by 160 feet of grey micaceous marl (d). Two or
three thin bands of mudstone and of occasional nodules occur in the
lower part of this mass ; and at rather more than 100 feet over the
" Three Tiers " a thicker band (e), containing shells and calcareous
concretions, stands out from the face of the cliff. Underneath this
thick band is a curious and persistent layer of small nodules (/), con-
taining, chiefly, fragments of Ammonites. The mass of grey marls
terminates with a layer made up of shells and fragments of Penta-
crinus ; and this is immediately overlain by a bed of large sandstones
from 4 to 6 feet in thickness, which is again succeeded by large
nodular masses of indurated sand. Over the nodular layer occur
the Middle Lias sands (a), grey and marly in the lower part, but gra-
dually becoming brown and more arenaceous in their upper portion.
Nodules are plentifully scattered through these ferruginous sandy
shales and sands, which are here about 60 feet in thickness, and are
succeeded by Cretaceous beds.
Fig. 3. — Vertical Section of the Middle Lias at the Golden Cap.
Greensands, &c.
feet.
a. Grey and Brown sands with nodules ... 70
b. Starfish-bed.
c. Shell-bed.
d. Grey micaceous marl with layers of mudstones 160
e. Mudstone with nodular concretions and Shells 4
/. Small nodules containing Ammonites.
g. The Three Tiers 23
h. Grey marls with the Green Ammonite-nodules 100
i. The Belemnite-stone.
We have, therefore, in the Golden Cap, about 290 feet of grey
marls, capped by about 60 feet of sands with nodules, all belonging
to the Middle Lias.
Passing eastwards over a small upthrow, mentioned by De la

Beche, there occurs, at the Coastguard-station at Seatown, a power-
Date
Source https://www.flickr.com/photos/biodivlibrary/12646259584
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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35328248
Item ID
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109632 (Find related Wikimedia Commons images)
Title ID
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51125
Page numbers
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Page 283
BHL Page URL
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https://www.biodiversitylibrary.org/page/35328248
Page type
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Text
Flickr sets
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  • The Quarterly journal of the Geological Society of London. v. 19 (1863).
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Flickr posted date
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20 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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current21:43, 26 August 2015Thumbnail for version as of 21:43, 26 August 20151,225 × 2,046 (482 KB)Fæ (talk | contribs)== {{int:filedesc}} == {{BHL | title = The Quarterly journal of the Geological Society of London. | source = http://www.flickr.com/photos/biodivlibrary/12646259584 | description = 1863.. <br> DAY LIAS OF DORSETSHIRE. <br> 283 <br> able feature in the c...

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