Discussion on distribution characteristics of calcareous sandstone in Shihongtan uranium deposit and its genesis;

Origin of calcareous interbeds and its significance of sequence stratigraphy in Junggar Basin;

This paper considers the formation causes of calcareous interbeds, shale resistivity differences and the relation of reservoir resistivity to altitude, on the basis of log curve morphological characteristics, core observation, founding slice, X-diffraction a.

Using rich core and logging data available, the authors have dealt in detail with the genesis and distribution of calcareous interbeds.

Formation mechanism of calcareous incrustation in lenticular sandbody of the Shahejie Formation of Paleogene and its influence on hydrocarbon accumulation in Dongying Sag;

For exploring optimum flux structure and achieving biggest profit, the industrial experiment has been done by means of replacing light-burned magnesian limestone by magnesian limestone as magnesian flux under the condition of using lime as calc-flux.

Ten genera of calcareous nanofossils such as Coccolithus and Reticulofenestra have been discovered in terrestrial sediments of Cenozoic-present salinized lakes from fifteen places in northwest and northeast China.