Particu larly,they should ensure full imple mentation of three essential parts i n reform of state-owned enterprises:clear dis tinction of property rights,separa ting the functions of the government from those of enter-prises,and the social security.

Strata sequence of the Ganxi Formation is established in the first time and the lithological associations and basic sequences are also discussed.

The basic sequences have constituted an important part of sequence stratigraphy since the 1990s,and are classified in terms of the superimposition of individual beds in the vertical sequences and boundary characteristics of sedimentary strata.

After a study of the strata of the Early Cretaceous Quantou Formation in northern Liaoning,the authors propose a classification scheme of the depositional sequences of the Quantou Formation:two sequences,11cyclic sequences and20essential sequences,summarize four types of sequence classification and their criteria for recognition and recognize three sedimentary systems ,i.

On the basis of order by order analysis of microfacies assemblages or essential sequences, depositional systems and depositional systems tracts, 61 essential sequences and three depositional systems (i.