File:DalradianExcursion011.jpg

From MediaWiki
Jump to navigation Jump to search
The printable version is no longer supported and may have rendering errors. Please update your browser bookmarks and please use the default browser print function instead.

Original file(512 × 1,400 pixels, file size: 239 KB, MIME type: image/jpeg)

Summary

description
English: Stratigraphic column at Port nan Clach Cruinn. Key

1 Vesicular lava with basal pipe amygdales. Load structures cause sediment to be squeezed upwards into lava. Toes of lava project downwards and northwards into the sediment causing minor fold disturbances. 2 Interbedded cream limestone (1-3 cm) and cream calcareous phyllite (0.5-1 cm). 3 Channel filled by limestone containing boulders of grey limestone in a matrix charged with angular fragments of quartz. Whole unit is cross-bedded, indicating derivation from south. 4 Pure grey limestone with beds 1-10 cm thick. 5 Parallel laminated (0.5-1 cm) limestone. 6 Graded limestone with fragments of quartz (1-1.5 cm) and black calcareous slate. Channelled base trending 110°. Intruded from below by a sedimentary dyke of 7. 7 Laminated (0.2-2 cm) limestone with sand-sized quartz fragments. 8 Conglomerate with boulders of dark grey limestone. 9 As 7. 10 Conglomerate of rusty weathering black limestone with largest fragments measuring 100 X 50 cm. 11 As 7. 12 Grey limestone with fragments (0.5-1 cm) of malachite and quartz. 13 As 7 with ripple marked base.

14 Massive limestone with quartz (0.5-1.5 cm) and black slaty limestone (1-3 cm) fragments. Flute casts at base indicate current from south-east. From: P. J. Gower 1977. 3: The Dalradian rocks of the west coast of the Tayvallich peninsula. Scottish Journal of Geology v 13. p125-133.
source Dalradian rocks of the South-west Highlands. Scottish Journal of Geology 13 (2) 1977
author Edinburgh Geological Society

Licencing

{{subst:Custom license marker added by UW}}

This image is Copyright Edinburgh Geological Society. The images may be reproduced free of charge for any non-commercial use in any format or medium provided they are reproduced accurately and not used in a misleading or derogatory context. Where any images on this site are being republished or copied to others, the source of the material must be identified and the copyright status acknowledged. For all other uses of the images please contact the Edinburgh Geological Society. publications@edinburghgeolsoc.org

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current20:49, 6 May 2015Thumbnail for version as of 20:49, 6 May 2015512 × 1,400 (239 KB)Scotfot (talk | contribs)User created page with UploadWizard