A selection of wild drought-resistant flowers was done on the basis of investigation of the wild flowers and plants resources in the east section of Mt.

In the region from Jixian County of Tianjin City to Xinglong County of Hebei Province in eastern Yanshan,the sedimentary structures which present the spindle-shaped crack on the surface are widely developed in the fine clastic strata of the of the Changcheng Group of the Mesoproterozoic,and they have been explained as the metazoan trace fossils or the seismic-induced liquefied veins etc.

Tectonic-Magmatic Mechanisms of the Two Types of Early Yanshanian W-Sn-Polymetallic and Pb-Zn-Polymetallic Deposit Assemblages in Southeast Hunan;

Important significance of regional tectonic regime to metallogenic capacity of Indosinian and Early Yanshanian granites in southeastern Hunan:A case study of Qianlishan and Wangxianling plutons;

Some Further Discussions on the Genetic Type of the Early Yanshanian (Jurassic) Granitoids in the Nanling area,SE China;

Based on the analysis of the regional deposit-forming background and the conditions of activation,migration,enrichment and precipitation of ore-forming materials in Hetai area from Caledonian to Yanshanian period,believe that the pulsation and upwelling of the mantle plume in late Yanshanian period in South China plays a keywords on formation of Hetai gold deposit.

All these events occurred in Yanshanian period, which has been considered as the post-orogenic period of the Indosinian Orogenesis.