The burial history and models for hydrocarbon generation and evolution in the marine strata in southern China

The marine strata in southern China underwent polycyclic tectonic movement and intensive late reworking in lon g geologic times. The differences of multistage subsidence and uplift, and regional erosion and deposition in different parts of southern China since the Indo-China movement have led to the delineation of six types of burial history, which may be separated into two groups including the "early subsidence-late uplift" and "early uplift-late subsidence". As a result, there are marked differences in hydrocarbon generation and evolution in different parts of southern China. According continuity of the hydrocarbon-generating processes, the hydrocarbon generation and evolution may be involved into three models, namely the continuous hydrocarbon generation, secondary hydrocarbon generation and late hydrocarbon generation.