The Cross Fell Inlier

Abstract
§ I . I troductory . S ince the “Description of an Insulated Group of Rocks of Slate and Greenstone in Cumberland and Westmoreland, on the East side of Appleby,” given by Dr. Buckland in the Transactions of the Geological Society (ser. 1, vol. iv. (1817) p. 105), a considerable number of papers have been devoted to the Lower Palmozoic rocks of that region, but as references to these are given in Mr. Whitaker's list of papers bearing upon the geology of the Lake District, published in the late Mr. Clifton Ward's memoir ou “The Geology of the Northern Part of the English Lake District,” it is needless to insert here an account of the bibliography of the area. An excellent summary of the work which has been achieved is given by Mr. X. G. Goodchild in a paper published in the Proceedings of the Geologists' Association for 1889. In this paper also considerable additions are made to our knowledge of the rocks of the Inlier, and to these we shall have occasion to refer. In the present paper, we have attempted to fix the ages of the various formations of Lower Palmozoic rocks in the Cross Fell district, to determine their organic contents, and to compare them with the corresponding rocks of other areas, rather than to give a detailed description of the general structure of the region. This latter will no doubt be done by the officers of the Geological Survey who have been engaged in mapping the district, with far

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