Earth Sciences

Volume 8, Issue 6, December 2019

  • The Occurrence and Enrichment of Scattered Indium: A Case Study of Dachang Ore Field in Guangxi, China

    Pi Qiaohui, Lu Di Lu Di, Yang Xiong, Yu Huidong

    Issue: Volume 8, Issue 6, December 2019
    Pages: 303-316
    Received: Oct. 13, 2019
    Accepted: Nov. 08, 2019
    Published: Nov. 14, 2019
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    Abstract: The Dachang tin-polymetallic deposit, which is located in the northwestern part of the Guangxi Zhuang Autonomous Region, contains great amounts of indium. But the occurrence and enrichment of indium are rather complex and not yet well understood. In this paper, the Dachang West ore belt (Tongkeng, Gaofeng) sphalerite is taken as the research object... Show More
  • Research on the Influence Depth of Soil with Different Burn Severity in the Burned Areas of E’gu Village in Yajiang County

    Wang Yan, Hu Xiewen, Jin Tao, Yang Ying, Chao Xichao

    Issue: Volume 8, Issue 6, December 2019
    Pages: 317-322
    Received: Aug. 21, 2019
    Accepted:
    Published: Nov. 18, 2019
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    Abstract: The high temperature caused by forest fires often leads to changes of soil properties, however, there is few detailed studies on the influence depth of soil properties caused by different fire severities. Taking the burned areas of E’Gu Village in Yajiang County as the research object, the influence depth of soil with different fire severity was re... Show More
  • Comparative Effects of Basalt Dust, NPK 20-10-10 and Poultry Manure on Soil Fertility and Cucumber (Cucumis sativus) Productivity in Bafut (Cameroon Volcanic Line)

    Primus Azinwi Tamfuh, Pierre Wotchoko, Djibril Gus Kouankap Nono, Carine Naah Yuh Ndofor, David Guimolaire Nkouathio, Dieudonné Bitom

    Issue: Volume 8, Issue 6, December 2019
    Pages: 323-334
    Received: Oct. 19, 2019
    Accepted: Nov. 12, 2019
    Published: Nov. 19, 2019
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    Abstract: Although chemical fertilizers have boosted food production in the last century, their efficiency is limited by their low potential to remineralize and restore chemically depleted soils at long term. This work investigates the comparative effects of basalt dust, poultry manure and NPK 20-10-10 on soil fertility and cucumber performance in Bafut (Nor... Show More
  • Optimization of Soil Sampling Design Based on Road Networks – A Simulated Annealing/Neural Network Algorithm

    Rong Chen, Shishi Liu, Yufei Yang, Wei Huang, Zongwei Han, Peihong Fu

    Issue: Volume 8, Issue 6, December 2019
    Pages: 335-345
    Received: Sep. 27, 2019
    Accepted: Nov. 06, 2019
    Published: Nov. 22, 2019
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    Abstract: In this study, the spatial distribution pattern of the roads, historical samples, digital elevation data, and other available resources were incorporated into the design of a soil-sampling scheme to predict the soil organic matter (SOM) of the northern region of Zhongxiang City, Hubei Province, and simulated annealing (SA) was applied to optimize t... Show More
  • On the Apparent Relationship Between Total Solar Irradiance and the Atmospheric Temperature at 1 Bar on Three Terrestrial-type Bodies

    Robert Ian Holmes

    Issue: Volume 8, Issue 6, December 2019
    Pages: 346-351
    Received: Oct. 23, 2019
    Accepted: Dec. 18, 2019
    Published: Dec. 26, 2019
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    Abstract: It has been discovered that there appears to exist a close relationship between relative differences in total solar irradiance and the atmospheric temperature, at a pressure of 1 bar, on all three terrestrial-type bodies which possess thick atmospheres. The apparent relationship is through the quaternary root of total solar irradiance at 1 bar, and... Show More
  • Main Diagenesis of Middle-lower Ordovician of Yubei Area in Tarim Basin

    Zhao Hanting, Wang Zongqi, Liu Juan

    Issue: Volume 8, Issue 6, December 2019
    Pages: 352-358
    Received: Nov. 22, 2019
    Accepted:
    Published: Dec. 26, 2019
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    Abstract: The Ordovician in Yubei area is an important target and production layer of marine carbonate exploration in Tarim Basin. In order to understand the reservoir distribution and therefore to promote exploration, by means of analysis of cores, rock sections, casting sections, logging data of Ordovician carbonate reservoirs in the Yubei area, the reserv... Show More