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I.—Calcite as a Primary Constituent of Igneous Rocks

Published online by Cambridge University Press:  01 May 2009

Rachel Workman
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Extract

During one of the excursions arranged by the International Geological Congress held in Sweden, 1910, we visited, under the leadership of Professor Högbom, a group of islands skirting the shore north of Sundsvall, on the Gulf of Bothnia. Among these islands Alnö and Långörsholmen are of particular interest on account of a complex of alkali igneous rocks forming the whole of the latter and the northern corner of the former. It is to this small but highly interesting group of rocks that I wish to call the attention of the reader, since apart from the short but convincing ‘guide’ prepared by Professor Högbom (1), scarcely anything has been written on the subject in the English language. The expedition was very skilfully planned, and we were thus enabled to visit several critical exposures and collect numerous specimens for microscopic study.

Type
Original Articles
Information
Geological Magazine , Volume 8 , Issue 5 , May 1911 , pp. 193 - 201
Copyright
Copyright © Cambridge University Press 1911

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References

References to Literature

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