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Research on Characteristics, Metallogenic Regularity and Exploration Prospect for Iron Deposits in South of Peru

Author: XiZhen
Tutor: GaoGuangMing
School: Central South University
Course: Structural Geology
Keywords: southern Peru iron ore deposit characteristics metallogenic regularity exploration model exploration prospect
CLC: P618.31
Type: Master's thesis
Year: 2011
Downloads: 132
Quote: 1
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Abstract


Peru is in the middle of Andean-type continental margin,being effected by plate subduction in a long-term, so it has a good geological background to ore formation.Southern Peru is rich in mineral resources and has great ore-searching prospects for iron deposits, however,nowadays proved iron deposit are not enough. Consequently, intensive studying on geological features and metallogenic regularity of iron deposits is extremely important.In this article, on the base of studying information about regional geology and known iron deposits,the author selected typical iron deposits to discuss,then dissected the distribution regularity of the important types of deposits in the southern Peru. Furthermore, author summarized the metallogenitic regulation and control factors of the ore deposits of the southern Peru, based on collecting regional remote sensing data, magnetic anomaly results and geochemical exploration data. Especially, the author studied the ore-forming abnormal character,and summarized the indicator and prospecting type of the important deposits,then predicted primary and secondary prospect areas.Through studying, the papers considered that the main linear structures of regional remote sensing are NW-trending, and shown as zonation. Iron ore deposit distributes mainly in the intersection of circular structure and dense linear structures. Regional aeromagnetic anomaly can be divided into ten belts according to distribution of its high value. Fe elements and Cu, As, Bi have a good relativity from regional geochemical exploration. The regional strata has a higher average iron abundance and Fe, As, Cu, Bi element anomalies shown as zonation. Magmatic rock type, volcanic-type and contact metasomatism-hydrother mal iron deposits are the three main types iron deposits in southern Peru. Main metallogenic epoch is Jurassic, Cretaceous and Paleogene-Neogene. Ore bearing stratum developed in the specific tectonic conditions, regional abyssal faults and its associated north west, north east structure, multi-stage magmatic intrusions are the main ore control factors in southern Peru. Then the author points out the indicators and prospecting type of the three main types of iron ore deposits. Regional iron mineration can be divided into three belts, such as Ica-Tacna iron ore belt of West coast, Ayacucho-Cusco iron ore belt of the north-central area, Cusco-Puno iron ore belt of Eastern area. Then author pointed five primary and nine secondary prospect areas and carried out analysis of prospecting direction, based on the analysis to mineralization anomaly of Iron ore in southern Peru.

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CLC: > Astronomy,Earth Sciences > Geology > Of ore deposits > Deposit classification > Ferrous metals > Iron
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