Constraints of nonseismic geophysical data on the deep geological structure of the Benxi iron-ore district, Liaoning, China
Autor: | Lin-Fu Xue, Chun-hui Xu, Chong Peng |
---|---|
Rok vydání: | 2020 |
Předmět: |
QE1-996.5
010504 meteorology & atmospheric sciences deep geological structure three-dimensional geological model Geochemistry bif iron ore Geology Environmental Science (miscellaneous) engineering.material 010502 geochemistry & geophysics 01 natural sciences Geological structure nonseismic geophysical profile Iron ore mesozoic intrusive rock engineering General Earth and Planetary Sciences China 0105 earth and related environmental sciences |
Zdroj: | Open Geosciences, Vol 12, Iss 1, Pp 887-903 (2020) |
ISSN: | 2391-5447 |
DOI: | 10.1515/geo-2020-0190 |
Popis: | The Benxi area in Liaoning Province is one of the most important iron-ore districts in China. This study uses nonseismic geophysical data (in the form of gravity–magnetic–magnetotelluric data) and based on the section modeling method to model the deep, three-dimensional geological structure of the Benxi area. Based on the modeling results and deep geological structure characteristics, the Benxi area can be divided into three first-order deep geological tectonic units. A close relationship is between tectonic unit and iron-ore concentrations. First, high-quality iron-ore deposits occur within the tectonic boundary and sedimentary boundary zone of the Jiao–Liao–Ji Belt, reflects the protective effect of sedimentary cover on the iron-bearing formation. Second, enriched iron-ore deposits are mainly developed in Mesozoic granitic intrusion zone, reflects the hydrothermal leaching of silicon in host iron-bearing formations during magma intrusion. Thus, the findings of this study have important implications for future prospecting in the Benxi iron-ore district. |
Databáze: | OpenAIRE |
Externí odkaz: |
načítá se...