Mark, Darren F.; Parnell, John; Kelley, Simon P. and Sherlock, Sarah C.
|DOI (Digital Object Identifier) Link:||http://doi.org/10.1130/G23388A.1|
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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:||Journal Article|
|Keywords:||authigenic K-feldspar; fluid flow; Caledonian orogeny; Fucoid Beds;|
|Academic Unit/Department:||Faculty of Science, Technology, Engineering and Mathematics (STEM)
Faculty of Science, Technology, Engineering and Mathematics (STEM) > Physical Sciences
|Interdisciplinary Research Centre:||Centre for Earth, Planetary, Space and Astronomical Research (CEPSAR)|
|Depositing User:||Users 2315 not found.|
|Date Deposited:||17 Apr 2008|
|Last Modified:||04 Oct 2016 10:09|
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