贵州习水地区奥陶系露头层序地层研究

根据野外露头剖面资料，结合碳氧同位素分析，探讨了贵州习水地区奥陶系层序地层界面识别、层序划分及其碳氧同位素响应。研究区奥陶系可划分出6 个三级层序，包括两个I 型层序界面，两个II 型层序界面及两个III 型层序界面。三级层序内海侵体系域和高水位体系域内13C 分别呈增加和减小的趋势。碳氧同位素响应能有效反映准层序叠置形成四级层序。米级旋回发育两种模式：L–M 型米级旋回、潮下型米级旋回。

Analysis of the Legal Issues About Initial Installation Charge for Pipeline Gas

“Initial installation charge for pipeline gas”is essentially a kind of administrative and compulsory charge. Various degrees of legal problems exist in the current three kinds of charge mode. Instead of directly introducing from foreign countries the two-part system of pipeline gas price, the more feasible solution is to integrate the initial installation charge into municipal supporting infrastructure charges of local government and to improve relevant collection and administration systems. Furthermore, the pipeline gas installation fee should be cancelled in places where trunk pipeline construction becomes saturated or compensation fund expense is comparatively low.