Results 11 to 20 of about 190,264 (315)

The Geological Survey of China [PDF]

Science, 1922
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In situ U-Pb Isotope Dating Techniques for Sandstone-type Uranium Deposits

Yankuang ceshi, 2020
BACKGROUND Uranium mineral dating has been difficult to ascertain in mineralization chronology. With the development of in situ U-Pb isotope dating technology, it is possible to directly date ore minerals (uranium minerals).
XIAO Zhi-bin, GENG Jian-zhen, TU Jia-run, ZHANG Ran, YE Li-juan, BI Jun-hui, ZHOU Hong-ying   +6 more
doaj   +1 more source

Geological Survey of Uganda [PDF]

Nature, 1927
AN unfortunate error has crept into the Annual Report of the Geological Survey of Uganda for the year 1926, whereby the reader is informed that Mr. A. D. Combe, of this Survey, is of opinion that there is a continuous succession through the Transvaal System into the Waterberg System in the Cape Province of South Africa.
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THE U. S. GEOLOGICAL SURVEY [PDF]

Science, 1920
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openaire   +3 more sources

THE GEOLOGICAL AND BIOLOGICAL SURVEYS OF ALABAMA [PDF]

Science, 1898
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A design of gold-bearing metallogenic provinces and districts in Brazil

Journal of the Geological Survey of Brazil
There is a lack of consensus on how many and which are the Brazilian gold provinces and districts, and what are their limits or configurations. As an effort of the Geological Survey of Brazil to standardize this subject, we present a compilation of the ...
Evandro Klein, Lila Queiroz, Antonia Railine Costa Silva, Antonio Charles Oliveira, Camila Basto, Carlos Eduardo Oliveira, César Chaves, Cintia Maria Gaia da Silva, Cleber Alves, Daniel Miranda, Edney Palheta, Felipe Grandjean Costa, Felipe Lima, Francisco Rios, Ivan Marques, Jorge Laux, Marcelo Marinho   +16 more
doaj   +1 more source

The deeper the better? A thermogeological analysis of medium-deep borehole heat exchangers in low-enthalpy crystalline rocks

Geothermal Energy, 2022
The energy sector is undergoing a fundamental transformation, with a significant investment in low-carbon technologies to replace fossil-based systems. In densely populated urban areas, deep boreholes offer an alternative over shallow geothermal systems,
Kaiu Piipponen, Annu Martinkauppi, Kimmo Korhonen, Sami Vallin, Teppo Arola, Alan Bischoff, Nina Leppäharju   +6 more
doaj   +1 more source

Assessment of Energy Potential and Benefit under the Ground Source Heat Pump Air Conditioning System in Anqing Area of Eastern China

Geofluids, 2021
Now ground source heat pump is a more efficient way to develop and utilize shallow geothermal energy because it is clean and environmentally friendly and has a relatively low energy cost.
Qing Zhang, Yunfeng Li, Jian Hua, Xiaonan Niu, Lili Hou, Zongfang Chen, Weiya Ge   +6 more
doaj   +1 more source

Linking Sidescan Sonar Backscatter Intensity to Seafloor Sediment Grain Size Fractions: Insight from Dongluo Island

Journal of Marine Science and Engineering
Accurate characterization of seafloor sediment properties is critical for marine engineering design, resource assessment, and environmental management. Sidescan sonar offers efficient wide-area mapping capabilities, yet establishing robust quantitative ...
Songyang Ma, Bin Li, Peng Wan, Chengfu Wei, Zhijian Chen, Ruikeng Li, Zhenqiang Zhao, Chi Chen, Jiangping Yang, Jun Tu, Mingming Wen   +10 more
doaj   +1 more source

Determination of W, Mo and 11 Other Elements in Tungsten-Molybdenum Ores by Inductively Coupled Plasma Optical Emission Spectrometry with Lithium Metaborate Fusion

Yankuang ceshi, 2021
BACKGROUND Tungsten molybdenum ores are strategic mineral resources. China is a large producer and consumer of tungsten and molybdenum ore. Accurate and efficient analysis of tungsten and molybdenum and its associated beneficial and harmful elements is ...
WANG Li-qiang, WANG Jia-song, WEI Shuang, ZHENG Zhi-kang, WU Liang-ying, ZHANG Nan, ZENG Jiang-ping   +6 more
doaj   +1 more source