Typical Ayer Granite. Feldspar crystals are centimeter size and random. This is a block of unsheared granite. 1992 NEIGC Field Trip, Field Trip #2 - Motion on the Clinton-Newbury and Related Faults and Multiple Deformation of the Merrimack Group in Eastern Massachusetts: Aspects of the Alleghanian Orogeny in Southeastern New England.
Summary
Typical Ayer Granite. Feldspar crystals are centimeter size and random. This is a block of unsheared granite.
1992 NEIGC Field Trip, Field Trip #2 - Motion on the Clinton-Newbury and Related Faults and Multiple Deformation of the Merrimack Group in Eastern Massachusetts: Aspects of the Alleghanian Orogeny in Southeastern New England.
