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Volume 70 - September 1933

Contents

Page 4 of 7

Reviews

Original Articles

Review

Reviews

Original Articles

  • Throopella typa, a new Devonian Scaphopod

  • D. K. Greger
  • Published online by Cambridge University Press:
    01 May 2009, pp. 373-374

  • Scaphopods are of rare occurrence in the Paleozoic of North America. Dentalium and Plagioglypta have been recorded from formations as old as Middle Devonian; however, their occurrence is always sporadic and it is only in the Upper Carboniferous rocks that they are met with in any number. The form here described is the first Devonian occurrence of the Class that has come to the writer’s notice throughout a period of thirty-five years’ active collecting in the Devonian of the Mississippi Valley.

Reviews

Correspondence

  • Buchanan's Laterite

  • Philip Lake
  • Published online by Cambridge University Press:
    01 May 2009, p. 240
    • Article
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  • Laterite

  • J. B. Scrivenor
  • Published online by Cambridge University Press:
    01 May 2009, pp. 191-192
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Reviews

Reports and Proceedings

Correspondence

  • Beaches in Gower

  • T. Neville George
  • Published online by Cambridge University Press:
    01 May 2009, pp. 525-526
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Correspondence

Reviews

Front matter

  • GEO volume 70 issue 5 Front matter

  • Published online by Cambridge University Press:
    01 May 2009, pp. f1-f7
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Original Articles

  • The Dusky Apatites of the Eskdale (Cumberland) Granite

  • Brian Simpson
  • Published online by Cambridge University Press:
    01 May 2009, pp. 375-378

  • A Patite was first recorded from the Eskdale granite by R. H. Rastall and W. H. Wilcockson in 1915 (I).1 Recently, the author, in carrying out work on the granite, has noticed the peculiar character of the apatites, in that they are mostly of a dusky type occasioned by the presence of large amounts of finely-divided inclusions. Similar apatites have been recorded from the Leinster granite (2), Gault Clay, Thanet Sands, Chausey Islands (3), Jersey (4), the Old Red Sandstone of the Cardiff District (5), and the Dublin district (6), but nearly all show a sharply defined core. The Eskdale ones, although presenting a dense centre, show no clear-cut division between the core and the outer zone of the apatite. Invariably the outer zone of the apatite carries some inclusions.

Correspondence

Review

Reviews

Page 4 of 7