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II.—The Permian Beds of Yorkshire

Published online by Cambridge University Press:  01 May 2009

Joseph Lucas
Joseph Lucas
Affiliation:
The Geological Survey of England and Wales.
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Extract

In the March number of the Geological Magazine, Mr. A. H. Green observes that it is difficult to account for the supply of salts to the Permian Sea. For the iron, he calls in the aid of mineral springs produced by volcanic action; but for the lime and magnesia, streams flowing into the sea holding in solution bicarbonate of lime and sulphate of magnesia.

Type
Original Articles
Information
Geological Magazine , Volume 9 , Issue 98 , August 1872 , pp. 338 - 343
Copyright
Copyright © Cambridge University Press 1872

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References

page 338 note 1 Mr. David Forbes says that “many beds, for instance the Gault, contain more iron than those Which are now red, though they may be grey or blue.”

page 338 note 2 In the form of bisulphide and carbonate. I have found iron pyrites in shales in Nidderdale, and bands and nodular beds of clay ironstone in many places.

page 339 note 1 Ramsay. Pretriassic Red Rocks. Proc. Geol. Soc., vol. xxvii., p. 246.

page 340 note 1 “The fish of the Marl Slate have generically strong affinities with those of Carboniferous age, some of which were undoubtedly truly marine, while others certainly penetrated shallow lagoons bordered by peaty flats.” Ramsay, Quart. Journ. Geol. Soc., vol. xxvii., p. 248.

page 340 note 2 Quart. Journ. Geol. Soc., vol. xxv., p. 291.

page 341 note 1 Quart. Journ. Geol. Soc., vol. xxv., p. 295.

page 342 note 1 Mems. of the Geol. Surv. of Engand and Wales.