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There is natural occurrence of pressure induced solid bitumen, here referred to as “compression dynamometamorphic solid bitumen”. It differs in physical properties and chemical structure from thermal metamorphic solid bitumen. Under a high pressure and moderate temperature, the solid bitumen forms crystals and its reflectance rises rapidly with increasing crystallization. Accordingly, its reflectance can reach a very high value without having been exposed to a high level of thermal stress. Laboratory simulation confirms the formation of pressure induced solid bitumen at moderate temperatures. The revelation of this new bitumen type is very helpful in the accurate maturity determination of carbonate organic matter.
There is natural occurrence of pressure induced solid bitumen, here referred to as “compression dynamometamorphic solid bitumen”. It differs in physical properties and chemical structure from thermal metamorphic solid bitumen. Under a high pressure and moderate temperature, the solid bitumen forms crystals and its reflectance rises rapidly with increasing crystallization. The, its reflectance can reach a very high value without having been exposed to a high level of thermal stress. Laboratory simulation confirms the formation of pressure induced solid bitumen at moderate temperatures. The revelation of this new bitumen type is very helpful in the accurate maturity determination of carbonate organic matter.