Western Washington University Western CEDAR WWU Graduate School Collection WWU Graduate and Undergraduate Scholarship Winter 1986 Structure and Petrology of the Deer Peaks Area Western North Cascades, Washington Gregory Joseph Reller Western Washington University,
[email protected] Follow this and additional works at: https://cedar.wwu.edu/wwuet Part of the Geology Commons Recommended Citation Reller, Gregory Joseph, "Structure and Petrology of the Deer Peaks Area Western North Cascades, Washington" (1986). WWU Graduate School Collection. 726. https://cedar.wwu.edu/wwuet/726 This Masters Thesis is brought to you for free and open access by the WWU Graduate and Undergraduate Scholarship at Western CEDAR. It has been accepted for inclusion in WWU Graduate School Collection by an authorized administrator of Western CEDAR. For more information, please contact
[email protected]. STRUCTURE AMD PETROLOGY OF THE DEER PEAKS AREA iVESTERN NORTH CASCADES, WASHIMGTa^ by Gregory Joseph Re Her Accepted in Partial Completion of the Requiremerjts for the Degree Master of Science February, 1986 School Advisory Comiiattee STRUCTURE AiO PETROIDGY OF THE DEER PEAKS AREA WESTERN NORTIi CASCADES, VC'oHINGTON A Thesis Presented to The Faculty of Western Washington University In Partial Fulfillment of the requirements for the Degree Master of Science by Gregory Joseph Re Her February, 1986 ABSTRACT Dominant bedrock mits of the Deer Peaks area, nortliv/estern Washington, include the Shiaksan Metamorphic Suite, the Deer Peaks unit, the Chuckanut Fontation, the Oso volcanic rocks and the Granite Lake Stock. Rocks of the Shuksan Metainorphic Suite (SMS) exhibit a stratigraphy of meta-basalt, iron/manganese schist, and carbonaceous phyllite. Tne shear sense of stretching lineations in the SMS indicates that dioring high pressure metamorphism ttie subduction zone dipped to the northeast relative to the present position of the rocks.