Some of the organic matter that settles on the sea floor becomes buried in submarine deposits. It then undergoes various processes of decomposition depending on the speed and depth of deposition. Within the uppermost few centimetres, organic matter is largely oxidized by bacteria to carbon dioxide and other substances, much of which escapes into the water. Carbon dioxide produced from organic matter deeper within the deposit mainly combines to form calcium carbonate which cements the substrate into rock. Deeper still in the substrate organic matter may undergo bacterial fermentation producing methane. Inorganic processes of decarboxylation induced by heat may also lead to the formation of methane or oil. Gas and oil in rocks tend to migrate through porous layers such as sand or limestone, but may become trapped within anticlines or unconformities beneath non-porous caps of materials such as salt or shales which prevent their escape to the surface.
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Lets start by identifying what exactly certain boats are. Sometimes the terminology can get lost on beginners, so well look at some of the most common boats and what theyre called. These boats are exactly what the name implies. They are meant to be used for fishing. Most fishing boats are powered by outboard motors, and many also have a trolling motor mounted on the bow. Bass boats can be made of aluminium or fibreglass.