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Note on the Age of the Milburn Group
Published online by Cambridge University Press: 01 May 2009
Extract
ON the western side of Cross Fell lies a group of beds consisting of andesitic lavas and ashes, with intercalated beds of shale. The shales are tranquilly bedded, testifying to their having been deposited in quiet water. It has therefore been inferred that the igneous material is volcanic, and was poured out on a sea-floor. The beds were first described by Harkness, later by Goodchild, who gave the name “Milburn Group”, and subsequently by Professors Nicholson and Marr.
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References
page 261 note 1 Quart. Journ. Geol. Soc., vol. xxi, 1865, pp. 235, 340–1.Google Scholar Cf., Harkness, Quart. Journ. Geol. Soc., vol. xix, p. 127.Google Scholar
page 261 note 2 Proc. Geol. Assoc., vol. ix, No. 7.Google Scholar
page 261 note 3 “The Cross Fell Inlier”: Quart. Journ. Geol. Soc., vol. xlvii, 1891, p. 502.Google Scholar
page 261 note 4 Geol. Mag., 1894, p. 128.Google Scholar
page 261 note 5 The Geology of the Country between Appleby, Ullswater, and Hawes Water. Mem. Geol. Surv. England and Wales, Sheet 30 (New Series), 102 S.W. (Old Series), pp. 34 and 39.Google Scholar
page 261 note 6 A Phyllograptus, the species of which has not yet been determined, has also been obtained.Google Scholar