Hostname: page-component-78c5997874-94fs2 Total loading time: 0 Render date: 2024-11-19T08:37:38.375Z Has data issue: false hasContentIssue false
  • English
  • Français

An X-ray investigation of some argillaceous rocks from the Skipton anticline, Yorkshire

Published online by Cambridge University Press:  09 July 2018

M. J. Purton  and
R. F. Youell
M. J. Purton
Affiliation:
The University of Leeds
R. F. Youell
Affiliation:
The University of Leeds
Get access Rights & Permissions [Opens in a new window]

Abstract

X-ray analyses of argillaceous rocks from the Skipton anticline show that their average composition is quartz 30%, calcite 27%, feldspar 5%, illite 15%, kaolin 17%. Pyrite and other constituents account for the remaining 6 %. The quartz, calcite and feldspar are considered to be detrital, the variations in their quantity and size reflecting changes in the source of the sediments. The evidence indicates the general predominance of kaolin over illite, which is contrary to other published results on Carboniferous marine shales. A kaolin-rich source is necessary to account for the composition of the sediments. An occurrence of unusually pure and well-crystalline melanterite is recorded from the Draughton Limestone.

Type
Research Article
Information
Clay Minerals , Volume 8 , Issue 1 , July 1969 , pp. 29 - 37
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1969

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

A.S.T.M. Index (1949) Am. Soc. Testing Materials, Alphabetical and Grouped Numerical Index of X-Ray Diffraction data, and Supplements.Google Scholar
Black, W.W. (1957) Trans. Leeds geol. Ass. 7, 24–33.Google Scholar
Brindley, G.W. (1951) X-ray Identification of Crystal Structures of Clay Minerals, Mineralogical Society, London.Google Scholar
Brindley, G.W. & Robinson, K. (1948) Trans. Leeds geol. Ass. 6, 75-94.Google Scholar
Buckley, H.E. (1951) Crystal Growth, Wiley, New York.Google Scholar
Hartley, J. (1957) Trans. Leeds geol. Ass. 7, 19–23.Google Scholar
Hudson, R.G.S. & Mitchell, G.H. (1937) Mem. geol. Sure. Summ. Prog. Pt. II, 1-45.Google Scholar
Kuenen, P.H. (1950) Marine Geology Wiley, New York.Google Scholar
Millot, G. (1952) Problems of Clay and Laterite Genesis Symposium of the American Institute of Mineral, Meteorological and Petrological Engineers, New York, 107–114.Google Scholar
Murray, H.H. (1954) Clays Clay Miner. 2, 46–67.Google Scholar
Murray, H.H. & Gravenor, C.P. (1953) Science, N. Y. 118, 25–28.Google Scholar
Palache C , Berman, H. & Frondel, C. (1951) Dana's System of Mineralogy 7th edn, Wiley, New York.Google Scholar
Youell, R.F. (1960) An electrolytic method for producing chlorite-like substances from montmorillonite, Clay Miner. Bull. 4, 191.CrossRefGoogle Scholar