Before becoming attached to North America, the __________ was an accretionary wedge deposit that formed in a subduction zone off western North America.

Question

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The Franciscan sequence is a well-known accretionary wedge deposit that formed in a subduction zone off western North America before becoming attached to the continent. The Navajo Sandstone is a predominantly Jurassic-aged sandstone formation found in the Southwestern United States, the Morrison Formation is a sequence of Upper Jurassic sedimentary rocks found in the western United States, and the Sundance Formation is a geologic formation found in the western United States that dates back to the Late Jurassic period.

Before Becoming Attached to North America, the __________ Was an Accretionary