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Xu Z.Q.,Chengdu University of Technology | Xu Z.Q.,Key Laboratory of Earth Exploration and Information Technology of the Ministry of Education | Song H.,Chengdu University of Technology | Zhang C.J.,Key Laboratory of Nuclear Techniques in Geosciences of Sichuan Province
Advanced Materials Research | Year: 2013

Xigeda Formation layer, which is widely distributed in Panzhihua area, is researched by the method of γ spectrum measurement. Qinglongshan Xigeda Formation profile is measured by the low-background multi-channelγenergy spectrometer in Panzhihua, the change rules of radioactive elements, including URa, Th, K, Ir and Ira on the profile are analyzed in detail. The characteristics and palaeoenvironmental significance of the sediment layer on the profile is researched by combining the geological features. The results show that the contents of radioactive elements in Xigeda Formation profile reduce obviously from the old to the new layer and change regularly and the radioactive characteristics are consistent to the sediment geological features. All these show that the γ spectrum method is a good one for the study of lake sediment and palaeoenvironment. © (2013) Trans Tech Publications, Switzerland. Source


Xu Z.Q.,Chengdu University of Technology | Xu Z.Q.,Key Laboratory of Earth Exploration | Li P.,Chengdu University of Technology | Zhang C.J.,Chengdu University of Technology | Zhang C.J.,Key Laboratory of Nuclear Techniques in Geosciences of Sichuan Province
Advanced Materials Research | Year: 2013

In this study, nine samples were collected along the trenches of LANJIAN mine and its water system in order to study the effect of Panzhihua Vanadium Titano-Magnetite on water during mining. Particle sizes of the sediments were analyzed with the laser, mineral composition of the sediments were analyzed with the X-ray diffraction analyzer, the content of Cu, Pb, Zn, Hg, Cd, As, Cr, Co, Ni, Mn, V, Ti, Fe and the Speciation characteristics of part of them were analyzed with the atomic absorption spectrophotometer and ICP-MS. These provide a reference for the environmental governance of mine. © (2013) Trans Tech Publications, Switzerland. Source


Song H.,Chengdu University of Technology | Song H.,Key Laboratory of Nuclear Techniques in Geosciences of Sichuan Province | Zhang C.,Chengdu University of Technology | Zhang C.,Key Laboratory of Nuclear Techniques in Geosciences of Sichuan Province | And 3 more authors.
Yanshi Xuebao/Acta Petrologica Sinica | Year: 2016

Located in the middle Sanjiang Belts, the study area could be tectonically divided, from west to east, into the Jinshajiang tectonic melange belt, the Yidun island arc and the Zhongzan block. Through systematical field sampling and analysis of the hydrothermal quartz veins from the copper polymetallic deposits in the middle Sanjiang Belts, the content characteristics and distribution pattern of trace-rare earth elements in the quartz veins are discussed in each tectonic unit. Based on geological background and evolution in the study area, the denotative and tracing meaning of the trace elements in quartz vein are further studied. The results show that: 1) There is a positive correlation between the ore-forming elements (e. g. Cu, Zn) and the magmatopile trace elements, which indicates the mineralization is related to magmatic activity. And the trace elements in quartz vein indicate that the ore-forming fluid in Zhongzan block has the closest relationship with the magmatic activity. 2) There is a significant difference that the REE geochemical characteristics in quartz vein from the Zhongzan block compared with the Jinshajiang tectonic melange belt and the Yidun island arc. Formed in the relatively reductive environment, REE in quartz vein from the Zhongzan block accord well with the mantle with the sub-horizontal REE curve and the δEu anomalies, which indicates the main material source of the fluid is likely to be the deep source. 3) According to the geochemical characteristics of trace and rare earth elements in quartz vein, there are similar geochemical characteristics in the metallogenic fluid sources between the Jinshajiang tectonic melange belt and the Yidun island arc for their similar role in the geological evolution history. While there is a remarkable difference that the geochemical characteristics in the Zhongzan block compared with the Yidun island arc. The research results provide evidence for the regional metallogenic events, the genesis of hydrothermal fluid and tectonic evolution, and prospecting suggestions of the copper and polymetallic deposits are proposed for the Sanjiang Belts. Source


Shi Z.-M.,Chengdu University of Technology | Shi Z.-M.,Key Laboratory of Nuclear Techniques in Geosciences of Sichuan Province | Ni S.-J.,Chengdu University of Technology | Ni S.-J.,Key Laboratory of Nuclear Techniques in Geosciences of Sichuan Province | And 4 more authors.
Geological Bulletin of China | Year: 2012

The heavy metals distribution of near-ground air dust in Chengdu economic region shows that the content of heavy metals in the middle-east part is higher than that in the west part, and that in the heavy industry city is higher than that in the comprehensive city and tourist city. The heavy metal content is totally high in industry and mine influencing areas, and that in the plain terrain of dense population is higher than that in the mountain area. The standard limit method was used to determine the element limiting concentration in near-ground air dust, and the statistics of values below the limiting concentration value was employed to determine the geochemical baseline values, and the values obtained are as follows: As 28.6 mg/kg, Hg 0.63 mg/kg, Cd 2.94 mg/kg, Cr 110 mg/kg, Pb 281 mg/kg, Ni 32 mg/kg and Zn 535 mg/kg. Elements in geochemical baseline of near-ground air dust are related to regional geological background and mineral development. Mining activity, industrial activity and residents' lives constitute the main factors responsible for the relatively high content of artificial disturbance elements of near-ground air dust. Source


Song H.,Chengdu University of Technology | Song H.,Key Laboratory of Nuclear Techniques in Geosciences of Sichuan Province | Xu Z.,Chengdu University of Technology | Xu Z.,Key Laboratory of Nuclear Techniques in Geosciences of Sichuan Province | And 2 more authors.
Geological Engineering and Mining Exploration in Central Asia - Proceeding Source: The XVIII Kerulien International Conference on Geology, KICG 2013 | Year: 2013

Black rock series, which are widely distributed in Southwestern China, Distribute mainly in the upper Sinian-Lower Cambrian, Silurian system, Permian and Triassic. In the black rock series in Southwestern China, there are many typical deposits, which are with many similar characteristics, has close relationship with the regional deep fault, lithology, magmatism-fluid activity. Numerous Uranium polymetallic deposits, uranium polymetallic occurrences and mineralized spots are widely distributed in the black rock series. In the black rock series in Southwestern China, there are many typical deposits, such as Zoige deposit (510) of Sichuan, Baimadong deposit (504) in Guizhou and Daxin deposit (373) of Guangxi. The Zoige deposit (510) of Sichuan is discussed in this paper. In Southwestern China, higher concentration of uranium in black rock series by sedimentation and Diagenetic stage is the prelude of the black rock series-type uranium deposits. The metallogenic way and scale of reformation and superposition are essential condition for the formation of typical uranium deposits in black rock series. A necessary "trilogy" to the formation of typical uranium polymetallic deposits in black rock series in Southwestern China are Prelude, Reformation and Superposition. Source

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