File:The Quarterly journal of the Geological Society of London (1916) (14598455507).jpg

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Identifier: quarterlyjournal721916ge (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 Libraries
Digitizing Sponsor: Biodiversity Heritage Library

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this direction beneath a covering of Torridoniandisposed in a series of sharp but shallow folds (fig. 1, p. 136). Ihave found north-easterly pitches well marked in the southern partof the sedimentary area, and again between Sanaigmore and ArdnavePoint (where shown in PI. XII). Probably a fairly uniform pitchprevails throughout the whole of the peninsula. It is unfortunatethat the lines separating psammitic and pelitic sediments in Sheets19 & 27 of the Geological Survey map are not drawn with suffi-cient accuracy to be of assistance in following out the structure;but I am strongly of opinion that the thickness of the sedimentsin the Ehinns is very considerable, and that the highest strati-graphical horizon is met with at Ardnave Point. Similar gentle north-easterly pitches continue through Oronsayand the southern part of Colonsay, introducing higher groups,probably, than those encountered in the Ehinns. Mr. Wright and 1 Numbers in brackets refer to the Bibliography, § IV, p. 159.
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part 2) THE ISLAY ANTICLINE. 137 I have traced an upward succession culminating at last in twoisolated synclines—the one at Kiloran Bay, the other at Scalasaig.The sediments of Oronsay and Colonsay have heen estimated atahout 5000 feet in thickness. Beyond Kiloran a descending sequence is introduced with veryhigh dips, and before long one meets with the outcrop of gneissalready mentioned (fig. 2, p. 136). It is natural to interpret thisgneiss as emerging from beneath the neighbouring Torridoniansediments, and continuous underground with the gneiss of Islay. When we take into consideration the great thickness of theLower Torridonian sediments of Colonsay and Islay, we find our-selves bound to postulate an important dislocation along the hollowof Loch Gruinart; for, immediately east of this hollow, we find theBowmore Sandstone and Islay Quartzite, divisions unrepresentedin even the deepest of the Colonsay synclines. For this dislocationI propose the name of the Loch Grruinart Fault. I

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Volume
InfoField
1916
Flickr tags
InfoField
  • bookid:quarterlyjournal721916ge
  • bookyear:1845
  • bookdecade:1840
  • bookcentury:1800
  • bookauthor:Geological_Society_of_London
  • booksubject:Geology
  • bookpublisher:London__etc__
  • bookcontributor:Smithsonian_Libraries
  • booksponsor:Biodiversity_Heritage_Library
  • bookleafnumber:265
  • bookcollection:biodiversity
  • BHL Collection
  • BHL Consortium
Flickr posted date
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30 July 2014

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current16:33, 27 August 2015Thumbnail for version as of 16:33, 27 August 20153,200 × 1,823 (713 KB)SteinsplitterBot (talk | contribs)Bot: Image rotated by 90°
16:37, 4 August 2015Thumbnail for version as of 16:37, 4 August 20151,823 × 3,205 (717 KB) (talk | contribs)== {{int:filedesc}} == {{subst:chc}} {{information |description={{en|1=<br> '''Identifier''': quarterlyjournal721916ge ([https://commons.wikimedia.org/w/index.php?title=Special%3ASearch&profile=default&fulltext=Search&search=insource%3A%2Fquarterlyjour...

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