Lines of Force is a photo-based screenprint series portraying fractures in sedimentary rocks in the formation known as the Huronian Supergroup. Deposited 1.9 – 2.45 billion years ago, these rocks metamorphosed about 1.8 billion years ago. Rubenzahl has been working with these images for about a year and is starting to gain some perspective on the matter. He is a Toronto-based artist and member of Open Studio.