UNMETAMORPHOSED SANDSTONE IN NORTHERN LABRADOR
The Siamarnekh formation at 2000 feet elevation in northern Labrador is an unmetamorphosed, red to pale orange, unfossiliferous sand-stone that is uniformly medium grained except for a small amount of conglomerate near the base. It is a moderately mature multicycle deposit with a composition covering the subarkose range. It is cut by a major west-dipping low-angle thrust fault. Northeasterly movement of Pleistocene glaciation can account for the known distribution of indicators from this formation.