This mapping area is in part of the Heart Mountain Detachment area. The Heart Mountain Detachment is a classic structure whose important features are outlined in the accompanying field guide (Malone and others, 1999). This area consists of gently dipping upper Paleozoic and Mesozoic strata that are cut by steeply-inclined dip-slip faults, allochthonous Paleozoic rocks that are bounded below by the gently inclined Heart Mountain Detachment fault, and Eocene volcanic and plutonic rocks of the Absaroka Volcanic Supergroup.
The goal of this project is to answer the following questions about the tectonic history of this area:
Follow the Guidelines for Map and Cross Section construction when preparing your project. The map, explanation and both cross sections should be constructed on the paper you are provided. You are free to design the layout of these items any way you like, but they all must fit on the same sheet of paper.
When mapping in the field or drawing cross sections, observe the following guidelines: