Advanced Materials Research Vol. 868

Abstract: Sanbao silver polymetallic deposit is overally located in the front of "North convex" in Laojun Mountain granite body, belonging to polymetallic deposit of stratabounded medium-low temperature hydrothermal reformation genesis. It has been found that six mineralized belt, having developed the wall-rock alteration. The prospecting criterion is determined by ore genesis and ore-controlling factor.

Abstract: Through the research on Rare earth mineral by Scanning electron microscopy (SEM) we found that Rare earth mineral in the lower part of the Wuchuan-Zheng^,an-Daozhen (WZD) bauxite profiles is parisite. The parisite in WZD area is long strips, with an average length of 30μm. The underlying strata of the boreholes which contain parisite all are the Hanjiadian Formation. The occurrence of parisite shows that in the forming process of bauxite rare earth elements (REE) moved from top to the bottom of the profile, and other unbeneficial elements also moved from top to bottom too, Al element enrichment in the middle and upper part of profiles.

Abstract: This article mainly analyzed and discussed the origin of exposed phosphate rock mine in Huaning area.We preliminary think the ore was started from basin phosphate deposits in the early and get rich from transportation and modification by the water repeatedly.Also at the diagenesis phase ,the Eh value is lower and Ph value is higher which makes phosphate concentration of interstitial water higher.With the affection of rich phosphorus interstitial water,the sediment get further phosphatization and makes the rock more rich.At the same time ,the calcium phosphate of intergranular water cements particles what makes the apatite has the characteristics of girdles.The analyzation leads that the cause of formation of phosphorus deposits in this area was sedimentation and modification.

Abstract: Wangfu fault depression Huoshiling Formation in southern Songliao Basin volcanic rocks with larger gas potential, but the volcanic reservoir control factors is not clear, the author take Well Wangfu 1 for example, explore the Huoshiling Formation of volcanic rock reservoir control factors. Well Wangfu 1 main lithology is andesite, volcanic breccia and tuff;on the lithofacies is given priority to with the overflow facies, followed by eruption facies, a small amount of volcanic sedimentary facies; denudation, devitrify and tectonism have the significance on improving reserving space; gaps in the tuff to improve large reservoir, it is more obvious that andesite and volcanic breccia improving permeability; volcanic breccia of Well Wangfu 1 is the relatively favorable reservoir space.

Abstract: The distribution of high quality hydrocarbon source rocks plays an important role in the accumulation of oil and gas. As a result, the identification of geochemical characteristics of high quality source rocks is the key to discriminate the distribution of high quality source rocks accurately. By core observation and sample analysis, taking Wuerxun-Beier depression in Hailaer Basin as the target regions, we make accurate discrimination of high quality hydrocarbon source rock developmental characteristics and comparison with common source rocks. The research shows that: (1) the hydrocarbon expulsion efficiency in study zone is high due to the alternating deposits of high quality hydrocarbon source rocks and sandstones. The high quality hydrocarbon source rocks deposited in the reducing environment to strong reducing ones, whereas common rocks deposited in oxidizing environment to weak oxidizing ones. (2) the occurrence of organic matter of high quality hydrocarbon source rocks is mainly in stratified enrichment type. The organic matter develops parallel bedding or basic parallel bedding. However, the distribution of organic matter of common source rocks is porphyritic and heterogeneous, or interrupted lamellar. (3) the hydrocarbon potential of high quality hydrocarbon source rocks is more than ten times that of common source rocks. (4) the content of organic carbon in high quality source rocks is high and the content of chloroform asphalt A is relatively low, which reflects that the hydrocarbon expulsion efficiency of high quality source rocks in the sand-shale interbeds of study zone is high.

Abstract: The Pb-Zn deposits (or points) with different ages of ore-bearing strata are counted in in the paper. Through discussing the lithology and elemental geochemistry in ore-bearing strata to explain the lead element and zinc element relate to strata and lithology, the author suggested the lead-zinc deposit mainly were exposed in specific stratum, considering the deposits was obviously was controlled by stratum and was greatly influenced by lithology. For this reason, combining with the comparative study of element abundances in rock, it has maily demonstrated the relevance of ore-forming elements.

Abstract: The Sichuan-Yunnan-Guizhou border region is one part of energy sources, and is the regions with most abundant petroleum mineral resources. This paper presents ore characteristics, the characteristics of the associations of primary minerals and gangues, concluding association between Lead-zinc ore and element combination in ore occurrences in Pb-Zn deposits, which summarize common element in Lead-zinc ore of Pb, Zn, Cu, Ag, Cd, Ge, As, Sb, Hg, Bi, Sn, Mn, Ba and so on.

Abstract: The Shanxi and Taiyuan formations in Permo-Carboniferous of upper Paleozoic Erathem of Qinshui Basin, not only has abundant coal and CBM resources, also has a lot of shales. By analyzing the shale thickness, organic matter type, organic matter abundance, vitrinite reflectance, mineral composition of the Permo-Carboniferous coal-bearing strata, considered that the shale thickness of coal-bearing strata in the Qinshui Basin is larger, the organic matter abundance is general, but maturity is high and full of rich brittle mineral. It is in favor of late fracturing.

Abstract: Geochemistry Characteristics of iudingshan Porphyry Cu-Mo Polymetallic Deposit are analyzed in the presented work. The Jiudingshan alkaline-rich porphyry is formed in Cenozoic (from 52 Ma to 29 Ma), being characterized by high potassium, rich alkali and high alumina can be attributed to high K calc alkaline series and shoshonite series, which showing LREE enrichment, HREE depletion, weak negative Eu anomaly (δEu=0.72~1.02, av.=0.86) close to the crust-mantle granite type (δEu=0.83) and mainly is formed in a post-collisional intraplate tectonic setting.

Abstract: Leakage detection of seawall is important for assessing seawalls present situation, appraisal and strengthening the protection and provide quantitative basis for project engineering management. These papers set forth the work principles of EM34-3 Type earth conductivity detector; and analyzed the detecting results of seawall located on Qiantang River. The research results show that the seawall safety grade is good, and this technology is suitable to assess seawall safety with a good reliability.