T. J. Dempster, B. J. Bluck; Regional metamorphism in transform zones during supercontinent breakup: Late Proterozoic events of the Scottish Highlands. Geology 1995; 23 (11): 991-994. doi: 10.1130/0091-7613(1995)023<0991:RMITZD>2.3.CO;2
Download citation file:
A new model for regional metamorphism within major strike-slip zones is presented that may be applicable to the generation of many small metamorphic terranes. Long-lived transform zones developed during continental break-up are prone to alternating local compression and extension. Periodic closure of pull-apart basins, formed within such zones, causes internal thickening of the sediment pile and formation of small low- or medium-grade metamorphic terranes, with well-defined, frequently reactivated margins. The Late Proterozoic Dalradian and Moine blocks of the Scottish Highlands are examples of such regional metamorphic terranes generated during the prolonged breakup of the Rodinia supercontinent.