The REE patterns for bitumen is similar to those for supracrustal sedimentary rocks in areas with no basement faults but stabilized structural settings.
The episodic flow of hydrocarbon migration and all geofluid and the episodic action of crust structure are complementary to each other and mutually determined.
The feldspar group contains tectosilicate minerals with similar properties, including orthoclase, albite and labradorite. Feldspars make up more than 60% of the upper crust of the earth.
The former three stages reflect the major process of eclogite facies metamorphism and the latest stages the light overprinting of greenschist facies retrometamorphism at the shallow level of crust.
The geothermal anomaly, low velocity zone and high conductivity layer in crust, and frequent occurrence of strong earthquakes show that the study area is an active area of modern tectonization.