ERTH 2403 Lecture Notes - Lecture 12: Biochemical Oxygen Demand, Particulates, Haloalkane
2 Sep 2016
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Ocean acidification is much more worse at night. Source rock: organic shale (contain organic matter from decomposed algae and other dead marine organisms) buried in anoxic shallow sediments. e. ii. At certain temperature and pressure, we have an oil window and gas window where oil and gas form e. iv. Once formed, the liquid and gas move upward through porous rocks (reservoir rocks: sandstones or limestones with cavities) until they hit an impermeable layer. If there is not impermeable rocks, then the oil-gas leak-out in the environment and can seep e. v: methane hydrates, potential, greatest hydrocarbon reserve on earth, crystalline solid methane in ice cage, stable >500m depth e. f, unknown. In thick layers in continental slope sediments g. i. Methane fizzes as it escape at surface g. iii. Caso4 f: caco3, hydrogenous sediments precipitated from seawater, hydrogenous sediment are precipitated from seawater predominantly as manganese and phoshorite nodules, metallic sulphides b. i. Pools of sulphide-rich brine mud: phosphorites c. i.
