Mark, D.F. , Parnell, J., Kelly, S.P. and Sherlock, S.C. (2007) Resolution of regional fluid flow related to successive orogenic events on the Laurentian margin. Geology, 35(6), pp. 547-550. (doi: 10.1130/G23388A.1)
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Abstract
Seven localities distributed along a 180-km-long outcrop within the UK sector of the Laurentian margin were sampled, and all showed two phases of authigenic K-feldspar. The first phase was precipitated from a cool fluid of moderate salinity, and the second phase was precipitated from a hotter, more saline fluid. Ar-Ar ages for the two episodes of authigenesis are ca. 470 Ma and ca. 432 Ma. The data can be interpreted to represent two phases of regional-scale fluid migration related to Ordovician arc accretion and Silurian continent-continent convergence, corresponding to the Grampian and Scandian episodes of the Caledonian orogeny, respectively.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Mark, Professor Darren |
| Authors: | Mark, D.F., Parnell, J., Kelly, S.P., and Sherlock, S.C. |
| College/School: | College of Science and Engineering > Scottish Universities Environmental Research Centre |
| Journal Name: | Geology |
| Publisher: | Geological Society of America |
| ISSN: | 0091-7613 |
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