Field guide to the Mesozoic arc and accretionary complex of South-Central Alaska, Indian to Hatcher Pass

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Abstract

This field trip traverses exposures of a multi-generation Mesozoic magmatic arc and subduction-accretion complex that had a complicated history of magmatic activity and experienced variations in composition and deformational style in response to changes in the tectonic environment. This Mesozoic arc formed at an unknown latitude to the south, was accreted to North America, and was subsequently transported along faults to its present location (Plafker and others, 1989; Hillhouse and Coe, 1994). Some of these faults are still active. Similar tectonic, igneous, and sedimentary processes to those that formed the Mesozoic arc complex persist today in southern Alaska, building on, and deforming the Mesozoic arc. The rocks we will see on this field trip provide insights on the three-dimensional composition of the modern arc, and the processes involved in the evolution of an arc and its companion accretionary complex.

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Additional publication details

Publication type Book
Publication Subtype Handbook
Title Field guide to the Mesozoic arc and accretionary complex of South-Central Alaska, Indian to Hatcher Pass
Year Published 2015
Language English
Publisher Geological Society of America
Contributing office(s) Alaska Science Center Geology Minerals
Description Report: 66 p.: HTML
Larger Work Title Fieldtrip Guidebook
First page 1
Last page 66
Country United States
State Alaska