A study of iron deposits in the Anshan area, China based on interactive inversion technique of gravity and magnetic anomalies

Fan, Zhengguo; Huang, Xuzhao; Tan, L. P.; Yang, Xue; Zhang, Hongrui; Zhou, Daoqing; Liu, Qiankun; Cao, Baobao

doi:10.1016/j.oregeorev.2013.09.017

Cited by 18 publications

(4 citation statements)

References 4 publications

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“…Finally, hypothetical geological bodies were accomplished by two dimensional interactive inversion. The theoretical formulas and computational model are listed as follows ( Figure 3 ) (Luo and Yao, 2007 ; Fan et al, 2014 ).…”

Section: Geophysical Analytical Techniquesmentioning

confidence: 99%

Assessment of geothermal resource potential in Changbaishan utilizing high-precision gravity-based man-machine interactive inversion technology

Jiang

et al. 2023

Front. Big Data

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As one of the clean energy sources, geothermal resources have no negative impact in changing the climate. However, the accurate assessment and precise identification of the potential geothermal resource is still complex and dynamic. In this paper, ~2,000 large-scale high-precision gravity survey points are conducted in the north of the Tianchi caldera, Changbaishan. Advanced data processing technologies can provide straightforward information on deep geothermal resources (Hot source, caprock, geothermal reservoir and geothermal migration pathway). Upwards continuation and the technologies decode two dome shaped low and gentle anomalies (−48 × 10−5 m/s2−65 m/s2) and a positive gravity gradient anomaly (0.4 × 10−7 m/s2−1.6 × 10−5 m/s2) in large-scale high-precision gravity planar. According to two point five dimensional man-machine interactive inversion technology and the research on petrophysical parameters, the density of the shied-forming basalts in the two orthogonal gravity sections is 2.58 g/cm3. The relatively intermediate to high density (2.60–2.75 g/cm3) represents geothermal reservoir, and low density (low to 2.58 g/cm3) is the geothermal migration pathway. In addition, large-scale high-precision gravity planar with a solution of about 1/50,000 indicate that the north of the Tianchi caldera exits the sedimentary basin and uplift mountain geothermal system.

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Section: Geophysical Analytical Techniquesmentioning

confidence: 99%

Assessment of geothermal resource potential in Changbaishan utilizing high-precision gravity-based man-machine interactive inversion technology

Jiang

et al. 2023

Front. Big Data

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“…The Lianshanguan syenogranites' positive εHf values and high Mg, Cr, and Ni contents indicate the key role of upwelling asthenosphere in their genesis. Additionally, the metamorphic volcanic rocks of the Anshan Group in the Anshan-Benxi area were formed in the Neoarchean [87,[91][92][93], indicating that younger ~2.7 Ga juvenile crustal materials also contributed to the generation of the Lianshanguan granite.…”

Section: Petrogenesismentioning

confidence: 99%

Reworking of Eoarchean to Mesoarchean Continental Crust in the Anshan–Benxi Area, North China Craton—Evidence from Lianshanguan ca. 2.5 Ga Syenogranites

Zhang,

Wang,

et al. 2023

Minerals

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The Anshan–Benxi area, situated in the northeast of the North China Craton (NCC), is home to not only the oldest rocks in China (~3.8 Ga) but also a diverse range of granitoids dated between 3.8 and 2.5 Ga. The Lianshanguan batholith, covering an area of approximately 250 km2 with an east–west trend, predominantly consists of syenogranites (K2O > 4 wt. % and K2O/Na2O ratios > 1.3). Laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) U-Pb analyses of the two syenogranites yielded concordant ages of 2541 ± 22 and 2512 ± 13 Ma, respectively. These syenogranites had zircon εHf(t) values ranging from −20 to +4.9 with two-stage Hf model ages (TDM2(Hf)) spanning 3.9–2.7 Ga. Based on petrological, geochemical, and isotopic characteristics, we conclude that the Lianshanguan syenogranites are mainly resulted from the reworking of complicated Eoarchean–Mesoarchean crustal materials, possibly with a small proportion of ~2.7 Ga juvenile crustal materials. When compared with coeval syenogranites from the Northern Liaoning and Western Liaoning–Eastern Hebei areas, ~2.5 Ga syenogranites from the Anshan–Benxi area displayed more complicated TDM2(Hf) ages, hinting at a pronounced late Neoarchean reworking of the Eoarchean to Mesoarchean continental crust (including metasedimentary sources) primarily in the Anshan–Benxi region of the North China Craton. This scenario significantly bolsters the arc–continent collision model.

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“…The main resources in these cities consist of oil, coal, natural gas, iron ore, magnetite, graphite, and molybdenum. For example, the Daqing city of the Heilongjiang province, which oilfield is among of the largest oilfields in the world and is China's largest, accounts for nearly 25% of China's oil production; however, the future oil production would decline from 41.6 million tons in 2007 to 8.0 million tons in 2060 [17], and the Anshan city of the Liaoning province is one of the richest iron deposit areas in China, in which the iron ores discovered have been estimated to be more than 7 billion tons at <500 m [18]. Figure 1.…”

Section: Studied Casesmentioning

confidence: 99%

Sustainability Investigation of Resource-Based Cities in Northeastern China

Xue

et al. 2016

Sustainability

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Improving the sustainability of traditional resource-based cities in China has been a core issue and policy-priority for Chinese government to establish long-term ecological civilization, particularly for northeastern China which is recognized as a typical agglomeration area of resources cities. In this study, we establish a three-layer index system consisting of a comprehensive layer, systemic layer, and variable layer, and including 22 indicators which are grouped into economic, social and environmental subsystems. After that, the TOPSIS (Technique for Order Preference by Similarity to Ideal Solution) method was applied to measure and rank the sustainability of the selected 15 typical resource-based cities in northeast China, and then a GIS (Geographical Information System) technique based on the software of SuperMap was applied to map the sustainability in terms of the spatial effects among these cities. The results reveal that a unilateral improvement of a subsystem did not mean an improvement or contribution to whole system. In detail, during the past 15 years from 2000 to 2015, the comprehensive sustainability of resource-based cities in Northeastern China shows a declining trend in the mass, and the sustainability of the economic subsystem shows increase; the sustainability of the social system remains stable, while the environmental subsystem shows decrease. These situations might result from policy interventions during the past 15 years, therefore, promoting the sustainability of resource-based cities needs a historical approach, which should focus on the coordinated development of its economic, social, and environmental subsystems.

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A study of iron deposits in the Anshan area, China based on interactive inversion technique of gravity and magnetic anomalies

Cited by 18 publications

References 4 publications

Assessment of geothermal resource potential in Changbaishan utilizing high-precision gravity-based man-machine interactive inversion technology

Assessment of geothermal resource potential in Changbaishan utilizing high-precision gravity-based man-machine interactive inversion technology

Reworking of Eoarchean to Mesoarchean Continental Crust in the Anshan–Benxi Area, North China Craton—Evidence from Lianshanguan ca. 2.5 Ga Syenogranites

Sustainability Investigation of Resource-Based Cities in Northeastern China

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