PT  - JOURNAL ARTICLE
AU  - MORRIS, G. A.
AU  - PAGE, L.
AU  - MARTINEZ, V.
TI  - New dates (415 Ma) for the Etive Dyke Swarm and the end of the Caledonian Orogeny in the SW Grampian Highlands of Scotland
AID  - 10.1144/0016-764904-160
DP  - 2005 Sep 01
TA  - Journal of the Geological Society
PG  - 741--744
VI  - 162
IP  - 5
4099  - http://jgs.lyellcollection.org/content/162/5/741.short
4100  - http://jgs.lyellcollection.org/content/162/5/741.full
SO  - Journal of the Geological Society2005 Sep 01; 162
AB  - New laser stepwise heating 40Ar–39Ar dates (415 ± 1.8 and 414 ± 2 Ma) from the Etive Dyke Swarm in the SW Grampian Highlands of Scotland indicate that the dykes are 10–20 Ma older than previously assumed. The dykes constitute the final phase of the Late Caledonian Granites in the region, which themselves define the end of the Caledonian Orogeny, therefore these dates can be taken as the end of the orogeny in this area. The dates show a temporal link between the Etive magmatism and early precious metal mineralization at Tyndrum as well as emphasizing the NW to SE diachronous nature of the end of Caledonian magmatism across Scotland.