The Quarterly journal of the Geological Society of London . ^1^ w V. Quartz-Rock and Quartzose LimestoneFROM Derbyshire. Vol. 54.] IN THE CAKBOJriFEEOUS LIMESTONE OF DERBYSHIRE. 183 up the oolitic limestones, destroying both their structures andorganisms, and absorbing their impurities, which in some instancesretained their original arrangement, but in others became groupedparallel to the outlines of the crystals of dolomite. Mr. Strahan expressed his admiration of the slides and spe-cimens exhibited by the Author, and of the conclusive proof whichthey afforded of his argument. The dolomitizat
The Quarterly journal of the Geological Society of London . ^1^ w V. Quartz-Rock and Quartzose LimestoneFROM Derbyshire. Vol. 54.] IN THE CAKBOJriFEEOUS LIMESTONE OF DERBYSHIRE. 183 up the oolitic limestones, destroying both their structures andorganisms, and absorbing their impurities, which in some instancesretained their original arrangement, but in others became groupedparallel to the outlines of the crystals of dolomite. Mr. Strahan expressed his admiration of the slides and spe-cimens exhibited by the Author, and of the conclusive proof whichthey afforded of his argument. The dolomitization of oolitic Car-boniferous Limestone in South Wales, referred to by the previousspeaker, seemed to be due to a similar process of alteration, thereplacing mineral in both cases appearing first as perfect isolatedcrystals, scattered through unaltered limestone regardless of theorganic structures. By a gradual increase in numbers such crystalsfinally replaced the original constituent, and completely obliteratedall organic structure. The source of the carbonate of
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Keywords: ., bookcentury1800, bookdecade1840, bookidquarte, booksubjectgeology
