Coal the heat and pressure of deep burial causes the loss of water, methane and carbon dioxide and an increase in the proportion of carbon. Thus first lignite (also called "brown coal"), then sub-bituminous coal, bituminous coal, and lastly anthracite (also called "hard coal" or "black coal") may be formed. The wide, shallow seas of the Carboniferous Period provided ideal conditions for coal formation, although coal is known from most geological periods. The exception is the coal gap in the Permian–Triassic extinction event, where coal is rare. Coal is known from Precambrian strata, which predate land plants—this coal is presumed to
Carbon capture and storage (timeline) intent to establish the Clean Energy Commercialization Centre. CECC aims to accelerate the development in China of clean coal conversion technologies and the creation of associated value chain investment opportunities through the commercialization of key technologies and coordinated management of large scale demonstration projects which primarily use coal as feedstock for fuel production, chemicals manufacturing and power generation. "Carbon Capture Journal" focuses on industrial carbon capture from power stations and industrial plants and carbon dioxide underground storage, including new technology, policy and projects. Since launching the website in May 2007, it has been actively sought out by the carbon capture