Arguments persist on the genesis and ages for the banded-augen (rapakivi) anatectic granitoids (charnockite) extensively outcropped in the Yunkai (云开) region, western Guangdong (广东) Province. Their petrochemistry, SHRIMP dating, deformational and metamorphic structure were studied. The results show ...

The mineralogical, petrological and geochemical studies on Keliyang(克里阳) potassic dykes have been carried out to understand their rock types, the petrogenesis and the nature of their mantle sources. They are potassic lamprophyre, not lamproites as the previous researchers believed. In this study, th...

The compositions of the whole rocks and trace elements of minerals in peridotites can reflect the characteristics of the lithospheric mantle. The nature and evolution of the Cenozoic lithospheric mantle beneath Hannuoba(汉诺坝),located on the north edge of the intra-North China orogenic belt,are discus...

We attempt to recover the paleoenvironments recorded in the accretion of a typical newtype hydrogenetic ferromanganese crust from the deep water areas of the East Philippine Sea. From detailed geochemical and U-series chronological studies, analysis of major and minor elements performed by X-ray flu...

A sandbox experiment model was designed to simulate how differences in rock strength and gravity between two blocks can influence the formation characteristics of thrusts. In the experiment the compression was from one direction with basement shortening and the initial surfaces of the model were obl...

Aromatic compounds extracted from sedimentary rocks can reflect environmental conditions, organic sources and maturity. The aromatics, identified in association with mass extinction in particular, would provide a signature assisting our understanding of the causes of the biotic crisis. Aromatic hydr...

In order to further the course of petroleum exploration and development in the Chagan(查干) depression in the Yingen(银根)-Ejinaqi(额济纳旗) basin, Northwest China, the major characteristics of the petroleum systems were comprehensively analyzed, including the essential geological elements, processes, and o...

The distribution of remaining oil is often described qualitatively. The remaining oil distributed in the whole reservoir is calculated according to the characteristics of the space distribution of the saturation of remaining oil. Logging data are required to accomplish this. However, many such proje...

The weight of evidence (WofE) model has been widely used for mineral potential mapping. During the conversion of a multiclass map into a binary map a lot of mineralization information is artificially added or lost because the generalization of the class within the cumulative distance interval to a l...

Geo-data is a foundation for the prediction and assessment of ore resources,so managing and making full use of those data,including geography database,geology database,mineral deposits database,aeromagnetics database,gravity database,geochemistry database and remote sensing database,is very signific...

In order to understand the capacity of water vapor to transport copper and its mechanism, using the solubility method, the solubility of copper in undersaturated water vapor was investigated experimentally at temperatures from 310 ℃ to 350 ℃ and pressures from 42×10⁵ to 100×10⁵ Pa. Results of these ...

The theoretical results of axial force distribution models differ greatly from tests because of the complication of the rock type material. A three-parameter combined-power model is proposed by curves fitting the test data recorded from the pull tests on anchoring bars used in different engineering ...