What Kind of Crust Was the Avalon Terrane Prior to Its

question 9

Multiple Choice

What kind of crust was the Avalon Terrane prior to its accretion to the Appalachians in the Acadian Orogeny in the Silurian and Devonian?

• A) supracrustal Iapetus seafloor sediments and Gondwanaland passive margin succession
• B) ophiolite- Iapetus Ocean crustal sequence
• C) island arc sequence
• D) microcontinental fragment rifted off Rodinia or Gondwanaland

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