File:The Quarterly journal of the Geological Society of London (13937049251).jpg
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[edit]DescriptionThe Quarterly journal of the Geological Society of London (13937049251).jpg |
TERTIARY VOLCANOES OP THE WESTERN ISLES OF SCOTLAND. 187 12. The Tertiary Volcanoes of the Western Isles of Scotland. By Professor John W. Judd, F.R.S., F.G.S. (Eead January 9, 1889.) Contents. Page I. Introduction 187 II. Views WHICH WERE maintained previous to 1874 188 III. Conclusions announced in 1874, which have been confirmed by subsequent Observations 190 A. The Relations between the Plutonic and the Volcanic Rocks of the Western Isles of Scotland 191 B. The Existence of five Great Centres of Eruption, with many minor and scattered Vents in the Western Isles of Scotland 192 C. The Subaerial Origin of the Lavas and Tuffs, and the Tertiary Age of both the Plutonic and the Volcanic Rocks 194 IV. Conclusions announced in . 874, which are Disputed in a recent Memoir by Dr. A. G-eikie 196 A. The General Order in which the several Varieties of Igneous Rocks were erupted in the District 196 B. The Existence in the District of great Volcanoes, which have been dissected by Denudation 201 V. The Alternative Theory op " Fissure-Eruptions " 206 A. Can great Basaltic Plateaux be formed by ordinary Volcanic Action? ;. 206 B. The Age of the Basic Dykes of North Britain 209 C. Insufficiency of these Dyke-fissures as Sources of the Plateau-basalts 210 D. Arguments drawn from the Lava-fields of the Western Territories of the United States 212 VI. Conclusion 215 I. Introduction. In the year 1874 I communicated to this Society the results of my studies concerning the Tertiary and Older Volcanic rocks of Western Scotland, and their relations to the Secondary strata with which they are so intimately associated *. The very generous manner in which the memoir dealing with those subjects was received by this Society — and especially by those who were at that time the leaders of geological thought in this country — can never be forgotten by me. Such a reception lays upon the author of a memoir certain very obvious responsibilities. In the event of serious and fatal errors being indicated in his observations or reasoning, it is clearly his duty to come forward and frankly withdraw the state- ments to which this Society has given such wide currency. It is equally incumbent upon him, should his premises and conclusions be openly challenged on what seem to him to be insufficient grounds, to undertake the task of re-examining and, if necessary, of defending his views. It may not perhaps be out of place to remark that my work in Scotland, to which were devoted .five years of heavy labour and careful research, was one that taxed to the full the powers of a private individual. It involved the examination of the physical relations and the discussion of the palseontological characteristics of the whole of the rocks of the Highlands between the Old Red Sand- Quart. Journ. Geol. Soc. vol. xxx. (1874), pp.220-302. |
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Source | https://www.flickr.com/photos/biodivlibrary/13937049251 | ||
Author | Geological Society of London | ||
Full title InfoField | The Quarterly journal of the Geological Society of London. | ||
Page ID InfoField | 36939978 | ||
Item ID InfoField | 113696 (Find related Wikimedia Commons images) | ||
Title ID InfoField | 51125 | ||
Page numbers InfoField | Pl. VII | ||
BHL Page URL InfoField | https://www.biodiversitylibrary.org/page/36939978 | ||
Page type InfoField | Illustration | ||
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Flickr posted date InfoField | 21 April 2014 | ||
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current | 05:52, 26 August 2015 | 1,166 × 2,104 (654 KB) | Fæ (talk | contribs) | == {{int:filedesc}} == {{BHL | title = The Quarterly journal of the Geological Society of London. | source = http://www.flickr.com/photos/biodivlibrary/13937049251 | description = TERTIARY VOLCANOES OP THE WESTERN ISLES OF SCOTLAND... |
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