USGS Release: Natural Methane Seepage on U.S. Atlantic Ocean Margin Widespread (8/25/2014 9:10:45 AM)

Methane plumes identified in the water column between Cape Hatteras, North Carolina and Georges Bank, Massachusetts, are emanating from at least 570 seafloor cold seeps on the outer continental shelf and the continental slope.  Taken together, these areas, which lie between the coastline and the deep ocean, constitute the continental margin.  Prior to this study, only three seep areas had been identified beyond the edge of the continental shelf, which occurs at approximately 180 meters (590 feet) water depth between Florida and Maine on the U.S. Atlantic seafloor.

USGS Release: Natural Methane Seepage on U.S. Atlantic Ocean Margin Widespread (8/25/2014 9:10:45 AM).

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