Patent ID: 11879884
Assignee: CHENGDU UNIVERSITY OF TECHNOLOGY
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 3:
4. The classification method for fine-grained mixed sedimentary rocks according to claim 1, wherein the step of performing a mineral content analysis and a total organic carbon content analysis, to obtain content values of different types of minerals and total organic carbon contents comprises:
performing the mineral composition analysis and the total organic carbon content analysis of each sample by using an X-ray diffractometer, to obtain contents of different minerals and the total organic carbon content in each sample; and
the fine-grained mixed sedimentary rocks comprising massive structure, laminated structure and layered structure; wherein the massive structure is the result of dispersive or even mixing of two or three of clay minerals, carbonate minerals and terrigenous clastic minerals; the layered structure is a bedding structure formed by mixing different mixed sedimentary rocks or nonmixed sedimentary rocks; a single rock bed with a thickness of less than 1 cm is defined as the laminated structure, and a single rock bed with a thickness of greater than 1 cm is defined as the layered structure; and, the laminated structure includes laminated carbonate-clay couplets, laminated carbonate-silt couplets, laminated clay-silt couplets, and laminated carbonate-clay-silt triplets.