13 results about "Diagenesis" patented technology

Diagenesis ( /ˌdaɪəˈdʒɛnɪsɪs/) is the process that describes physical and chemical changes in sediments caused by increasing temperature and pressure as they get buried in the Earth's crust. In the early stages, this transformation of sediment into sedimentary rock, (lithification) is accompanied simply by a reduction in porosity, while its component mineralogy remains unaltered. As the rock is carried deeper by further deposition above, its organic content is transformed into kerogens and bitumens. The process of diagenesis excludes surface alteration (weathering) and metamorphism. There is no sharp boundary between diagenesis and metamorphism, but the latter occurs at higher temperatures and pressures. Hydrothermal solutions, meteoric groundwater, porosity, permeability, solubility, and time are all influential factors.