Aeromagnetic reconnaissance has revealed that the EW trending Yarlung Zangbo River aeromagnetic anomaly zone, 1400 km in length, is composed of two linear anomaly zones respectively in the north and in the south. It is also considered that it results from two ophiolite belts emplaced along the Yarlung Zangbo River suture zone, with the northern belt playing the dominant role. This is to say that the Yarlung Zangbo River suture zone is comprised of two ophiolite belts instead of one belt as considered by previous geologists. The aeromagnetic anomaly zone is in essence the objective reflection of the existence of the Yarlung Zangbo River suture zone. It not only provides relatively typical magnetic field model for the recognition of the suture zone, but also supplies new grounds to the probable existence of two opening closing processes in the evolution of the Neo Tethys Ocean.

In the 1:1 000 000 high precision aeromagnetic reconnaissance performed in central and western Qinghai Tibet plateau, the acquirement of high quality surveying result depends largely on keeping relatively low flying altitude in field work. With the prerequisite that the flying safety is guaranteed, this paper puts forward a new surveying method aiming at effectively lowering the flying altitude in accordance with the topographic and meteorological conditions of the surveyed area and the performance of the aircraft. Practice shows that this method can yield satisfactory result and hence deserves popularization.

This paper describes distribution characteristics of helium isotopos and some trace elements in different types of rocks along Dabie Mountain ultrahigh pressure metamorphic complex belt as well as along Liuan Caihe geoscience profile, and deals with their affecting factors and geological significance.

This paper gives an overall assessment of the eco landscape conditions of southern Jiangxi for the growth of tea trees. Based on systematic investigation of 13 typical tea gardens, the authors obtained data concerning elemental characteristics of rocks, soils and tea leaves. The provision grades of nutritive elements for tea tree growth were evaluated in accordance with their total and available contents. The tea quality was appraised by comparing it with Longjin Tea, and the relationship between tea quality and geochemical background was also discussed.

The effects of filtering with different filters on analytical results and precisions of MOMEO elements have been studied in this paper. In view of the authenticity of the measured results of MOMEO elements and the properties of soil colloid, the 2 μm pore diameter membrane is determined as the optimal filter employed in MOMEO survey. It is of great significance to the normalization of MOMEO survey method. The application test shows that the 2 μm pore diameter membrane can be effectively used in MOMEO survey.

This paper describes the technique employed in searching for concealed igneous rock (ore) bodies in metallic ore districts and the achievements gained. Drilling verification has proved that the results are quite consistent with the seismic interpretation and inference. Such an attempt is of great significance in widening the survice of seismic exploration.

This paper probed into the application of Euclidean distance formula to the quantitative comparative analysis in electric sounding water exploration and made computation and analysis for several sets of data, which yielded fairly satisfactory results.

Ship noise interference is one of the major interference in offshore seismic data collection. In most cases, the ship noise interference has the property of lateral wave, and hence the traditional processing technique for eliminating linear regular inferences fails to suppress it. By employing the spatial domain transform method, the regular ship noise interference in the common shotpoint domain can be converted into stochastic interference in the common deviation distance domain, and by using the popular technique for suppressing stochastic interference, the aim of suppressing ship noise interference can be attained. The examples of suppressing ship noise interference are also given in this paper.

This paper deals with the application of geophysical technique to monitoring and predicting dyke hidden trouble in flood season, and describes various experimental results obtained by using distribution style high density resistivity technique.

In the light of two special problems, namely the underground geological engineering survey and surface reservoir engineering geological investigation, this paper deals with the countermeasures and effeciveness of engineering geophysical application. The conclusions reached have some practical value and theoretical grounds, and hence are of referential significance in future engineering geophysical application to engineering geological exploration for the water pumping energy storage station.

Based on large quantities of forward calculation, this paper deals emphatically with the prerequisite of applying high density resistivity method to cavity exploration, characteristics and discrimination modes of anomalous shapes related to different collection devices, the resolution capacity for neighboring cavities, and the technique for improving the quantitative interpretation precision in cavity exploration. It also makes clear the ambiguous points of this method in cavity exploration with the purpose of improving its application effects.

With two exploration examples, this paper recounts the application of geological radar to detecting fractures, karst and old mined-out galleries in media of different lithologic characters and its effects.

Stir coment and soft soil in deep ground pile is semi plastic pile. The pile body was mixtured by cement and clay. The cross section is homogeneity. So in theory, it absolutely hard to fit the supposes of all kind that the method of stress wave reflect to examining complete to reinforced concrete pile. That just right caused dispute that the method of stress wave reflect to examine it. The paper tried making the method of stress wave reflect to examine stir coment and soft soil in deep ground pile, and analysis the signal and processing it by the method of frequency is good.