Geochemistry of till and mode of occurrence of metals in some moraine types in Finland by Vesa Peuraniemi Download PDF EPUB FB2
Geochemistry of till and mode of occurrence of metals in some moraine types in Finland. Espoo: Geologinen tutkimuslaitos, (OCoLC) Material Type: Government publication, National government publication: Document Type: Book: All Authors / Contributors: Vesa Peuraniemi.
The geochemistry of different till size fractions and studies of heavy minerals have been used in mineral exploration in the ribbed moraine terrain in southern Finnish Lapland.
The Peräpohja Schist. The mineralogy and geochemistry of the clay fraction of till in different moraine types and in different bedrock areas in northern Finland have been studied.
Moraine types include ground moraine, Rogen moraine, Pulju moraine, Sevetti moraine and Kianta moraine. The bedrock is composed of granite, granite gneiss and mafic by: A Cu-Zn-Pb-Au mineralized quartz-carbonate vein within micaceous schist recently exposed in a gravel pit quarried into the Kumpuselkä esker (Finland) was the impetus of this study, which examines the glacial dispersal of metals in the nearby Quaternary deposits.
The oldest ice flow direction in the area was to the SE–SSE, the younger flow in the ice lobe phase to the ESE and the youngest Cited by: 2.
The mineralogy and geochemistry of the clay fraction of till in different moraine types and in different bedrock areas in northern Finland have been studied. Moraine types include ground moraine Author: Pertti Sarala. The distribution of Au and Cu in fine fraction (till in both horizontal and vertical dimensions showed that the uppermost part of the moraine ridges contained the highest metal contents.
In the coarser fractions of till (– and >2 mm), the anomalies were located on the distal side of the ribbed moraine ridges, down-ice from mineralized bedrock. Boulder tracing and till geochemistry have been widely used as exploration tools in glaciated terrain for more than 60 years.
In the past 25 years, indicator mineral methods applied to till have. III Sarala, P. & Rossi, S. The application of till geochemistry in exploration in the Rogen moraine area at Petäjävaara, northern Finland.
Journal of Geochemical Explorat 87– IV Sarala, P. Till geochemistry in the ribbed moraine area of Peräpohjola, Finland. Applied Geochemis – V Sarala, P. Copper mineralization (chalcopyrite) is associated with the first two rock types.
The thickness of the drift is m. Basal till (ds0 = mm) is mixed with m-thick preglacial regolith covering the fresh bedrock. In the regolith the Cu contents is up to. Till geochemistry with surficial geology are used as a practical exploration tool in glaciated areas since 's, increased knowledge and better understanding of glacial deposits have given an.
Bedrock geology, Quaternary geology, till geochemistry and geophysics have been used successfully for discovering the source rock(s) of ore boulders found on the surface of Rogen moraine ridges.
In this paper, till geochemistry including the analyses of three grain-size fractions and heavy mineral concentrates, has been investigated.
Nimike: Geochemistry of till and mode of occurrence of metals in some moraine types in Finland; Sarjan nimi: Geological Survey of Finland, Bulletin - Bulletin de la Commission Géologique de Finlande; Volyymi: ; Ulkoasu: 75 p. Kieli: eng.
till in northern Finland Department of Geosciences, Faculty of Science, University of Oulu,FIN University of Oulu, Finland Oulu, Finland Abstract The mineralogy and geochemistry of the fine and clay fractions oftill in different moraine types and in different bedrock areas innorthern Finland have been studied.
Mineral Deposits of Finland is the only up-to-date and inclusive reference available that fully captures the scope of Finland’s mineral deposits and their economic potential. Finland hosts Europe’s most mature rocks and large cratonic blocks, analogous to western Australia and Southern Africa, which are the most mineralized terrains on Earth.
However, a till sample always represents a larger area than a single-site rock sample and is thus very appropriate when exploring for Mo, the mode of occurrence in bedrock of which is often irregular and the primary halos of which are small. Also in areas of low density of outcrops, the use of till geochemistry may be a suitable alternative.
A systematic till survey of 78 km2 was carried out in N Finland from test pits were dug with a mechanical excavator, reaching bedrock; the mean depth was m. some months. Geology and Geochemistry of Epithermal Systems presents a synthesis of the current under standing of the processes responsible for the concentration of metals (especially gold and silver) in near-surface environments, provides an overview of the systematics of.
in Virtasalmi kaolin deposits, SE Finland. Mineral composition of the deeply weathered samples is dominated by kaolinite, with minor amount of quartz, muscovite-illite and traces of resistant minerals (rutile, zircon and mona-zite).
There is a gradual transition zone between kaolin and its parent rocks. The transition zone and the primary. The occurrence mode of concretions and compositional data on interstitial water suggest that metals in the concretions were derived from seawater and suspended particulates, in addition to sediments.
Burial of concretions in the sediment pile is accompanied by the alteration of their composition, accumulation of Mn (relative to Fe), and loss of. How to Cite. Leventhal, J. () Comparative Geochemistry of Metals and Rare Earth Elements from the Cambrian Alum Shale and Kolm of Sweden, in Sediment-Hosted Mineral Deposits: Proceedings of a Symposium Held in Beijing, People's Republic of China, 30 July-4 August (eds J.
Parnell, Y. Lianjun and C. Changming), Blackwell Publishing Ltd., Oxford, UK. doi: /ch - APPLIED GEOCHEMISTRY. Aims and scope. This course is designed to illustrate the applications of geochemical principles for solving geological and environmental problems.
It includes an introduction aqueous to geochemistry and geochemical modeling of waterrock reactions, some. Carbonate ores of cobalt are a significant but under-recognized fraction of the global Co resource. Cobalt forms spherocobaltite (CoCO 3, calcite group), whose complete solid solution with isostructural magnesite, MgCO 3, is described here for the first -rich dolomite, Ca(Mg,Co)(CO 3) 2, and Co-rich calcite, (Ca,Co)CO 3, can accommodate up to 20 mol.% Co and up to 2 mol.% Co.
Geochemistry of till and mode of occurrence of metals in some moraine types in Finland by Vesa Peuraniemi (Book). The success of prospecting for gold deposit in overburdened areas based on the using of secondary dispersion haloes mostly depends on the chosen method of geochemical survey (sampling horizon, sample preparation for analysis, etc.).
At the same time, the geochemistry of gold in the supergene zone is insufficiently studied, especially it’s migration and concentration in association with.
Geochemistry is the science that uses the tools and principles of chemistry to explain the mechanisms behind major geological systems such as the Earth's crust and its oceans.: 1 The realm of geochemistry extends beyond the Earth, encompassing the entire Solar System, and has made important contributions to the understanding of a number of processes including mantle convection, the formation.
Kähkönen, A.-M.:‘Till geochemistry and sensitivity to acidification of lakes in northern Finland’, in E. Tikkanen, M. Varmola and T. Katermaa (eds.),Symposium on the State of the Environmental Monitoring in Northern Fennoscandia and Kola Peninsula.
6–8 October,Rovaniemi, Finland. Arctic Centre, University of Lapland, pp. In most black shales, such as the Chattanooga Shale and related shales of the eastern interior United States, increased metal and metalloid contents are generally related to increased organic carbon content, decreased sedimentation rate, organic matter type, or position in the basin.
In areas where the stratigraphic equivalents of the Chattanooga Shale are deeply buried and and the organic. The Garson Ni-Cu-platinum group element (PGE) deposit is a deformed, overturned, contact-type deposit along the contact between the Sudbury Igneous Complex and underlying rocks of the Huronian Supergroup in the South Range of the Ma Sudbury structure.
The historic mining district of Pitkäranta in the Ladoga region, Fennoscandian Shield, was exploited for Fe, Cu, Zn, Pb, Sn and Ag in the nineteenth to twentieth centuries.
The Pitkäranta region is dominated by Palaeoproterozoic supracrustal rocks, which, together with gneissic Archaean dome structures, constitute an allochthonous terrane complex that amalgamated to the Archaean continent. We present new results on the geochemistry and mineralogy of the disseminated ores from the Maslovsky deposit, Noril’sk area, Russia.
On the basis of the composition of rocks and of the rock-forming minerals, the deposit consists of two magmatic bodies: the northern one is a continuation of the Noril’sk-1 intrusion, whereas the southern one represents a separate massif.
As with all science, our continually developing concepts of lunar evolution are firmly tied to both new types of observations and the integration of these observations to the known pool of data. This process invigorates the intellectual foundation on which old models are tested and new concepts are built.This banner text can have markup.
web; books; video; audio; software; images; Toggle navigation.Abstract. Coal will be a major energy source in the United States and in many other countries well into the 21st century.
Although coal is composed predominantly of organic matter, inorganic constituents in coal commonly attract more attention and can ultimately determine how the coal will be used.