Hostname: page-component-586b7cd67f-tf8b9 Total loading time: 0 Render date: 2024-11-22T00:04:27.205Z Has data issue: false hasContentIssue false
  • English
  • Français

Culm Stratigraphy and the Age of the Main Orogenic Phase in Devon and Cornwall

Published online by Cambridge University Press:  01 May 2009

Scott Simpson
Scott Simpson
Affiliation:
Geology Department, University of Bristol.
Get access Rights & Permissions [Opens in a new window]

Abstract

The major stratigraphic divisions of the Carboniferous rocks of Devon and Cornwall are characterized and new terms suggested to replace those of W. A. E. Ussher. It is shown that there is in South Devon and Cornwall a major unconformity separating an uncleaved group of post-orogenic Carboniferous strata (Ugbrooke Group) from underlying Devonian and Carboniferous with slaty cleavage. It is argued that the Ugbrooke Group is younger than any strata hitherto thought to be present in the Carboniferous of South-West England, and that the major orogeny is either Malvernian or Asturic in age.

Type
Articles
Information
Geological Magazine , Volume 96 , Issue 3 , June 1959 , pp. 201 - 208
Copyright
Copyright © Cambridge University Press 1959

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

Arber, E. A. N., 1905. The fossil flora of the Culm Measures of Northwest Devon. Phil. Trans. Roy. Soc. (B), cxcvii, 291–325.Google Scholar
Arber, E. A. N., 1907. On the Upper Carboniferous rocks of West Devon and North Cornwall. Quart. Journ. Geol. Soc., lxiii, 1–28.CrossRefGoogle Scholar
Austen, R. A. C. [Godwin-], 1842. On the geology of the south-east of Devonshire. Trans. Geol. Soc. (2nd. ser.), vi, 457–458.Google Scholar
Collins, F. G., 1911. Notes on the Culm of South Devon. Quart. Journ. Geol. Soc., lxvii, 393–414.CrossRefGoogle Scholar
Crookall, R., 1930. The plant horizons represented in the barren coal-measures of Devon, Cornwall and Somerset. Proc. Cotteswolds Nat. Fld. Club, xxiv, 27–34.Google Scholar
Goldring, R., 1955. The Upper Devonian and Lower Carboniferous trilobites of the Pilton Beds in N. Devon. Senk. Leth., xxxvi, 27–48.Google Scholar
Moore, E. W. T., 1926. On the occurrence of Reticuloceras reticulatum in the Culm of North Devon. Geol. Mag., lxvi, 356–358.Google Scholar
Owen, D. E., 1950. Carboniferous deposits in Cornubia. Trans. Roy. Geol. Soc. Cornwall, xviii, 65–104.Google Scholar
Reid, C., 1911. The Geology of the country around Tavistock and Launceston Mem. Geol. Surv. Eng. Wales.Google Scholar
Simpson, B., 1933. On the presence of the zones of Anthracomya lenisulcata and Carbonicola ovalis in the Culm Measures of North Devon. Geol. Mag., lxx, 433–436.CrossRefGoogle Scholar
Summervaile, A., 1898. On the Culm conglomerates of South Devon. Rep. Trans. Devon. Assoc., xxx, 362–366.Google Scholar
Ussher, W. A. E., 1887. The Culm Measures of Devonshire. Geol. Mag., xxiv, 10–17.CrossRefGoogle Scholar
Ussher, W. A. E., 1892. The British Culm Measures. Proc. Somerset Archaeol. Nat. Hist. Soc., xxxviii, 111–219.Google Scholar
Ussher, W. A. E., 1901. Culm Measures Types of Great Britain. Trans. Inst. Mining Engrs., xx, 360–390.Google Scholar