The comprehensive marine sedimentary environmental model of Chinain late Proterozoic to Triassic periods is established on the basis of twosets of facies

including six facies zones and fifteen facies belts

namely:1

The trough basin facies which includes the deep sea trough-basinand the shallow sea trough-basin facies zones;and 2

The platform shelffacies which includes the shallow sea basin

the plat form margin

the platform and the continental margin facies zones.The shallow sea basin facies zone consists of the shelf margin basin

the shallow shelf and the inner-margin shelf slope facies belts.The plat-form margin facies zone comprises the foreslope

the reef and the bankfacies belts.The platform facies zones comprise the trough-like platform

the open platform

the semi-restricted platform and the restricted plat- form facies belts.The continental margin facies zone includes the lit-toral bar-beach

the tidal flat lagoon

the coastal marsh

the coastalterrigenous clastic beach and the delta facies belts.The marine sedimentary environmental model of China in late Prote-rozoic to Trissic periods can be classified into three types and fifteenforms These are the trough basin type

the platform shelf type and thetrough-platform type.The first one comprises the shallow sea trough-basin

the deep sea trough-basin and the shallow-deep sea trough-basin.The second one includes nine different forms.They are the trough-likeplatform shelf

the open platform shelf

the semi-restricted platformshelf

the restricted platform shelf

the bar-beach platform shelf

thedeltaic platform shelf

the terrigenous clastic beach platform shelf

themargin basin platform shelf and the marsh platform shelf.The third onecomprises the joint form of trough-platform

the forms of platform snr-rounded by troughs and of trough surrounded by platforms.The marine sedimentary environments of China in late Proterozoicto Triassic periods are characterized by the development of continentalmargin facies zone and by the complexity and variousness of platformfacies belts

frequent occurrence of high-energy facies belts

and the pre-sence of source-reservoir-cap combinations in the platform facies zones.