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The Petrography of Some Kainozoic Igneous Rocks, and of the Cape Parry Alkaline Complex, East Greenland

Published online by Cambridge University Press:  01 May 2009

G. W. Tyrrell
G. W. Tyrrell
Affiliation:
Lecturer in Geology, University of Glasgow.
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Extract

IN this paper it is proposed to give a brief account of the petrography of the Kainozoic igneous rocks collected by Mr. J. M. Wordie during the Cambridge Expedition to East Greenland led by him in 1926. A small collection of alkaline igneous rocks, but of less certain age, was also made from Cape Parry, and is briefly dealt with in this paper. As Mr. Wordie has written a short note on the geology of the Tertiary igneous rocks in his geographical paper, and as Dr. H. G. Backlund intends shortly to publish a much more comprehensive account of Tertiary igneous activity and rocks in East Greenland than is possible on the basis of the materials collected by the Cambridge Expedition, this paper aims only at making a brief record of the petrographical characters of the collection, and especially at recording three new chemical analyses, two of the Kainozoic basalts, and one of a riebeckitetrachyte from the Cape Parry alkaline complex. For the most recent account of the general geology of East Greenland, and for a connected summary of the Kainozoic igneous rocks collected by other expeditions, the reader is referred to memoirs by L. Koch and H. G. Backlund.

Type
Original Articles
Information
Geological Magazine , Volume 69 , Issue 11 , November 1932 , pp. 520 - 527
Copyright
Copyright © Cambridge University Press 1932

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References

page 520 note 1 Wordie, J. M., “ The Cambridge Expedition to East Greenland in 1926,” Geogr. Journ., 09., 1927, 225–65, with map. Appendix V, “ Geology,” 252–3.CrossRefGoogle Scholar

page 521 note 1 “ The Geology of East Greenland: Stratigraphy of Greenland,” Medd.om Grōnland, lxxiii, 1929, pp. 1–320. “ Tertiary Basalt,” 186–200.Google Scholar

page 521 note 2 “ Contributions to the Geology of North-east Greenland,” Medd. om Grōnland, lxxiv, 1930, 209–96.Google Scholar

page 521 note 3 The numbers in brackets are those attached to the rocks in the Cambridge Expedition collection. The localities mentioned can be found on the map in Mr. Wordie’s paper already cited.

page 523 note 1 “Tertiary and Post-Tertiary Geology of Mull,” Mem. Geol. Surv. Scotland, 1924, 372; and fig. 62B, 371.Google Scholar

page 523 note 2 MacGregor, A. G., “The Classification of Scottish Carboniferous Olivinebasalts and Mugearites,” Trans. Geol. Soc. Glasgow, xviii, pt. ii, 1928, 324–60.Google Scholar

page 525 note 1 Tyrrell, G. W., “The Geology of Arran,” Mem. Geol. Surv. Scotland, 1928, 118.Google Scholar

page 525 note 2 Tyrrell, G. W., Geol. Mag., 1912, 120.CrossRefGoogle Scholar

page 525 note 3 “Tertiary and Post-Tertiary Geology of Mull,” Mem. Geol. Surv. Scotland, 1924, 370.Google Scholar

page 525 note 4 Tyrrell, G. W., “Classification and Age of the Analcite-bearing Igneous Rocks of Scotland,” Geol. Mag., LX, 1923, 251.Google Scholar

page 526 note 1 “Tertiary and Post-Tertiary Geology of Mull,” Mem. Geol. Surv. Scotland, 1924, 225.Google Scholar

page 526 note 2 Ibid., 227.

page 526 note 3 “Bidrag til Nordöstra Grönlands Geologi,” Geol. Fōr. F¯rh. Stockholm, 23, 1901.Google Scholar

page 526 note 4 “On the Geology and Physical Geography of East-Greenland,” Medd. om Grōnland, xxviii, 1907, 151–284. For alkaline rocks see pp. 195–214.Google Scholar

page 526 note 5 “Geology of East Greenland,” Medd. om Grōnland, lxxiii, 1929, 119–24.Google Scholar

page 526 note 6 “The Cambridge Expedition to Greenland in 1926,” Geogr. Journ., 09., 1927, 225–65. “ Geology,” 252–3.Google Scholar

page 527 note 1 “ The Tertiary and Post-Tertiary Geology of Mull,” Mem. Geol. Surv. Scotland, 1924, 191–2.Google Scholar

page 527 note 2 Tyrrell, G. W., “ The Geology of Arran,” Mem. Geol. Surv. Scotland, 1928, 204.Google Scholar

page 527 note 3 Op. cit., 124. Also personal communication from H. G. Backlund.