abstract:A cold seep (sometimes called a cold vent) is an area of the ocean floor where hydrogen sulfide, methane and other hydrocarbon-rich fluid seepage occurs, often in the form of a brine pool. "Cold" does not mean temperature of seepage is lower than surrounding sea water.
Nanhua System in Datangpo, Songtao County, Guizhou Province is proposed to be oneof theidealareas to investigate theancientgasseepand the associated cold spring carbonates.