File:The Quarterly journal of the Geological Society of London (12981373014).jpg

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122
PEOCEEDINGS OF THE GEOLOGICAL SOCIETY. .June 23,
beds on the upper region of the western border of Val di Bove, and
dipping towards the latter, belonging to quite a different order of
things, in the history of the mountain, to those dipping away from
the valley, you will find it excusable that I had adopted in my
section of Etna (PL 9) the disposition of the stratified masses
according to fig. 6. To make my views clearer as to the dipping of
the tuff- agglomerate and lava away from the valley at the Rocca
Giannicola, where these rocks occur distinctly stratified, and inclined
at angles varying from 20° to 30° to the N. and N.W., I will add
a few words on an interesting phaenomenon observed by me at the
Rocca della Capre. A copy of my sketch, made on the spot, is added
here (fig. 7). You have probably observed the same fact ; and you
Fig. 7. — Dyhes on the Rocca della Capre. Facing towards N.E.
N.E.
s.w.
will see whether I agree with your opinion about it or not. Every-
body who examines the Rocca della Capre will agree with me that
it is to be considered as a remnant of the great formation of alter-
nating beds of crystalline trachytic rocks and tufa, which subsided in
consequence of the catastrophe that ultimately brought Etna to its
present shape. Notwithstanding the regularity which shows the
dip of the beds (as also the mean direction of the traversing basaltic
dykes, from N.E.-S.W.) to be the same prevailing in the beds of the
Cima (fig. 2), that is, away from the valley towards the north, there
is a considerable bending by zigzag inclinations of the beds in the

Rocca della Capre, which seems to be a consequence of the close
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Source https://www.flickr.com/photos/biodivlibrary/12981373014
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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36161661
Item ID
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111474 (Find related Wikimedia Commons images)
Title ID
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51125
Page numbers
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Page 122
BHL Page URL
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https://www.biodiversitylibrary.org/page/36161661
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Text
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  • The Quarterly journal of the Geological Society of London. v. 15 (1859).
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Flickr posted date
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7 March 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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26 August 2015

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current14:40, 26 August 2015Thumbnail for version as of 14:40, 26 August 20151,162 × 2,045 (493 KB)Fæ (talk | contribs)== {{int:filedesc}} == {{BHL | title = The Quarterly journal of the Geological Society of London. | source = http://www.flickr.com/photos/biodivlibrary/12981373014 | description = 122 <br> PEOCEEDINGS OF THE GEOLOGICAL SOCIETY. .June 23, <br> beds on t...

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