The wallrock alterations of gold mineralization include silicification,pyritization,sericitization,potassic alteration,chloritization and carbonitization.
R-mode factor analysis has proved very useful in distinguishing geochemical data, clearly dominated by anthropogenic in comparison to geogenic sources.
When the regional extension is disharmonic with the basement structure and movement, complicated fault assemblages can be form during progressive deformation.
From the viewpoint of the hydrogeological environment,this paperdescribes the genesic types,prospecting direction and its way of deve-lopment of the spring in Jianregion.
Lead and selenium mainly exist in galena, clausthalite, and selenio-galena which occur as cell-filling of coal-forming plants and are of chemical-sedimentary origin.
Ichnofabric analysis displays a rising significance on accurate environmental interpretation of sedimentary units in oil-bearing basin and precise recognition of depositional disconuities.
The auth or suggests that prebiological informational structures,gene predecessors and protoorganisms should be looked for among abiogenic ordered hydrocarbon molecul ar systems(hard bitumens).
The alabandite and getchellite of hydrothermal origin, cement anatase of alkaline volcanic origin, and the high content of chlorite in coal were fist found in coals.
The volcanogenic deposits hosted in differential yolcanic rock series and cogenetic deposits hosted in undifferential baste volcanic rock series have been divided and studied in this paper.