无可争辩
发表于 2025-3-25 03:38:44
,Overview of the Geology of the Noril’sk Area and the Problems of Ore Genesis,and rarely of elevated alkalinity. There are two types of sulfide ores: disseminated and massive. These are located near the contacts with the intrusive bodies. There are three main deposits in the Noril’sk area: the Talnakh, Oktyabr’skoe, and Noril’sk deposits. Many other intrusions contain mineralizations in economic quantities.
中子
发表于 2025-3-25 07:46:16
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曲解
发表于 2025-3-25 11:54:21
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intelligible
发表于 2025-3-25 19:07:24
Introduction: Formulation of the Problem and Its Urgency,giant deposits: accounting for <5 % of the currently developed mineral deposits, these deposits satisfy 85 % the world’s consumption of mineral resources. The development of these deposits should provide a basis for the stable progression of our civilization (Rundkvist and Kravchenko 1996). Another
责难
发表于 2025-3-25 21:52:44
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SCORE
发表于 2025-3-26 02:17:20
,Specifics of the Tuff–Lava Sequence: Geological and Geochemical Evidences,rusive rocks differ from one tectonic element to the next (the Kharaelkh and Noril’sk Troughs and the Tunguska Syneclise). Many of the basal basalts were studied, particularly with regard to their concentrations of major and rare elements. The lower formations (Ivakinsky, Syverminsky, Gudchikhinsky,
有帮助
发表于 2025-3-26 06:55:59
Intrusive Rocks,mposition form three types, taking into account the distribution of rare elements in rocks—Dyumtaleysky, Low Talnakh, and Noril’sk close to Gudchikinsky, Nadezhdinsky, and Morongovsky lavas. Main ore-bearing intrusions of the Noril’sk Complex are described based on 1–2 sections. They are as follows:
glomeruli
发表于 2025-3-26 11:48:57
Composition of the Parental Melts for the Intrusions,nd volatile components). These have compositions approximating those of the rocks. The magmas contained 0.5–0.7 % H.O, up to 0.2 % Cl, and 300 ppm F. The magma composition of the Talnakh intrusion was estimated with the aid of KOMAGMAT software. It was demonstrated that the magma contained 10 % oliv
oxidant
发表于 2025-3-26 14:54:38
Relationship Between the Lavas and the Ore-Bearing Massifs,ntruded basalts of the Nadezhdinsky Formation. Therefore, these rocks were formed in post-Nadezhdinsky time. The ore-bearing intrusions are similar to the volcanic rocks of the Morongovsky Formation in terms of their rare elements and isotopic compositions (Sr, Ɛ.), but they contain higher MgO conce
mutineer
发表于 2025-3-26 20:52:24
,Basic–Ultrabasic Intrusions in the Kola-Karelia Area, and rare elements were determined in several samples from famous Ni deposits as Monchepluton, Fedorova–Pansky Tundras, and Burakovsky as compared to intrusions of the South Kovdor area, perspective on founding sulfide mineralization. All intrusions of the Kovdor area were related to the drusite (co