Total organic carbon(TOC),and total sulfur(TS),total iron(TFe)contents were analyzed in the siliceous rocks(bedded chert)and shales sampled from the selenium deposit of Yutangba,western Hubei,based on which the mechanism of enrichment of multiple elements and depositional environments(i.

There are 13genera, 53 species, 4 subspecies and 5 varieties of compositae (Senecioeeae and Calenduleae)in western Hubei, of which 2 species are reported the new distriburion in Shennongjia.

Based on "Genetic Classification" theory, the traps discoveried in the west Tabei uplift are classified into four types and eight sub types in the carbonate strata and the clastic strata which are two kinds of exploration goals.

Based on Landsat TM data of July-September, 1996 and August-October, 1988, the change of salinization of Qian′an County and desertification of Lishu County in the west of Northeast China and land-use status between Wuerjimulun river and Xinkai river are studied.

The major structure during the basin formation which controls the coal-forming is NWW system.