The Grampide Andalusite/Kyanite Isograd

Synopsis Separation of ‘regional’ from ‘contact’ andalusite in the vicinity of the newer granite intrusions of Aberdeenshire suggests that the andalusite/kyanite isograd runs as far south as Glen Callater before turning north east to pass along Deeside. The nature of the critical conjunction between this ‘solid’ isograd and the ‘dehydration’ kyanite isograd is still obscure but if we assume the Battock intrusion to have wedged the two apart, then both would dip to the north, the kyanite isograd surface therefore being inverted.