These gas plumes could conceivably have been liberated by mud volcanoes, were the initially warm mud to contain methane-producing microbes drifting in a previously unobservable underground lake.

• 这些羽状气体很有可能由泥火山释放出来，这些原始温暖的泥土含有释放甲烷的微生物，微生物则漂流在以前无法观察到的地下湖泊中。