Identifier: quarterlyjourna331877geol (find matches)
Title: The Quarterly journal of the Geological Society of London
Year: 1845 (1840s)
Authors: Geological Society of London
Subjects: Geology
Publisher: London (etc.)
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Biodiversity Heritage Library

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d i a, n ches to a Statute Mile. =rf ■>..!., .>•.■■ y.-ei Quart. Journ Geol Snc Vol HDD P)
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H. HICKS ON THE rRE-CAMBRIAN ROCKS OF ST. DATIds. 241 like organisms in the specimens referred to by Mr. Hicks, butthought that fossils would probably be found in the series by andby. He described the beds passed through in the adit to the slate-quarry on Moel Trj-faen, south of Caernarvon, and thought therewas much reason for considering them Pre-Cambrian; but theyappeared to him to resemble more the Dimetian of Mr. Hicks thanthe Pebidiauc beds. Mr. Ethekidge said that these rocks of St. Davids are so specialthat the author was justified in proposing new names for them.He confirmed the authors statement as to the extent of the faultsin Ramsey Island. Mr. Hudleston wished to call attention to the character of someof the rocks to which Mr. Hicks had alluded, and more especially toa class of rocks called dolomites, which occurred in beds of mode-rate thickness. The specimen examined was not a true dolomite,but rather a calci-dolomite, the proportion of lime being too great.Moreover, wit

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