It is believed that Helan Mountain, Qinling and northern Qilian area were at the stage of rifting development from Mid-Neoproterozoic to Early-Mid Cambrian, and that Qinling, northern Qilian, Helan Mountain formed a trifurcate rift valley system.

The Neoproterozoic rift systems in southern China: New evidence for the sedimentary onlap and its initial age;

HC fluid may be generated indirectly in bottom sediments of water basins of riftogenic type under sufficiently high heat flow that do not require submersion of original oil and gas source mass at the depth of 3 km and more (riftogenic model).

The Liaohe Group of Paleoproterozoic Erathem located in rift basin of east Liaoning and south Jilin area ,a boron-bearing Rock series which is divided into thress part from the up to bottom of this group and separatedly locate with szaibelyite--suanite ,magnetite bearing szaibelyite and ludwigite types of boron deposits.

The spreading rate of the rift valley is estimat.

n this thesis, the author discussed the basic pattern of rifts in Taiwan Strait, anddivided the strait and its both sides into four rift systems, analysed the formation andevolution processes of the rift systems, explained the corresponding relation of the formation and evolution between the rift structure and rift valley, and studied the evolutionmodel of Taiwan Strait rift valley.

When coupled with the regional tectonic setting,it is considered that the Permian alkaline-tholeiitic basalts association in the Shuanghu Area was formed in the rift valley setting,and their occurrence may indicate a process from rift valley to juvenile oceanic crust along the Longmucuo-Shuanghu tectonic zone.