U.S. Passive Margins: Are We Missing an Important Opportunity?
Understanding passive margins—thick accumulations of sediments built above the juncture between continental and oceanic crusts—has far-reaching economic and societal implications related to hydrocarbon reserves, carbon dioxide sequestration, natural hazards, and other concerns. However, the author indicates that as presently envisioned, the U.S. National Science Foundation’s EarthScope initiative to explore the four-dimensional structure of the North American continent will not study U.S. passive margins. The author calls on the U.S. geoscientific community to discuss how best to reconfigure existing geoscientific initiatives to help Earthscope study passive margins.