Geodynamics and ore deposit evolution how is geodynamics. Ore fluids induced hydrostatic convection of modified seawater, with unconstrained magmatic input. Jingwen mao, institute of mineral resources, chinese academy of geological sciences, beijing 37, china. As the understanding of the evolution of tectonic systems has progressed, it has also become apparent that the types of mineral deposits change as tectonic systems evolve kerrich et al. Metallogenic belt and mineral deposit maps of northeast asia. Classification of mineral deposits geology for investors.
Geodynamics and ore deposit evolution how is geodynamics and ore deposit evolution abbreviated. The main value of this book to most agu members is that it shows how ore deposits can reveal tectonic setting. In addition, such data provides a better understanding of the geodynamic. Application of mineral deposit concepts to geothermal exploration ian bogie1 and jim lawless1 1kingston morrison ltd. Bedrock terrane compilation details yukon geological. That part of a mineral resource for which tonnage, densities, shape, physical characteristics, grade and mineral content can be estimated with a reasonable level of confidence. Major rifts occur along the central axis of most midocean ridges, where new oceanic crust and lithosphere is created along a divergent boundary between two tectonic plates. Reconstruction of fragmented continents can provide a useful basis for. Mineral deposits and global tectonic settings brett. Geodynamic settings of mineral deposit systems journal of the. Groves centre for exploration targeting and tectonics special research centre, school of earth and geographical sciences, the university of western australia, crawley, w.
Goldrich vms deposits develop in extensional geodynamic settings, where thinned lithosphere extension drives high heat flow and enhanced hydraulic conductivity, as for epithermal deposits. Overprinting mineral systems can develop when evolving tectonic processes cause multiple mineral systems to affect the same deposit. The gtks mineral deposit database contains all mineral deposits, occurrences and prospects in finland. The characteristics, origins, and geodynamic settings of. Table of content volume 1 sy01 gold through time and. Geodynamic settings of mineral deposit system article in journal of the geological society 1641. Possible missing link between carlintype gold deposits and magmatichydrothermal systems 71 muntean, j. Usgs a proximity rule is commonly to construct the grade and tonnage model workings within 1. That part of a mineral resource for which tonnage, grade and mineral content can be estimated with a low level of confidence. A total of 48 metallogenic belts including 450 mineral deposits of 70 model types were studied. Mapping deep electrical conductivity structure in the. Pdf documents opened from your browser may not display or print as intended. These belts are related to four time spans metallogeny epochs corresponding to the cycles of geodynamic processes that led to the formation of the polyaccretionary orogenic.
Geological processes operating due to energy released at plate boundaries control the process of mineral deposition. The second part section 5 deals with a brief overview of mineral deposits and their classification. Heineman for the use of the mineral files of the arizona bureau of mines and to dr. More than 60 mineral deposit types based on more than 2,500 deposits from around the world e.
Carlinstyle goldsilver mineralization at the cove deposit in nevada, usa. This report provides digital files for maps of mineral deposits and metallogenic belts of. An overview of the use of petrochemistry in regional. The paper will first define the attributes of the target and outline key geological and tectonic settings that these deposit occur in. The theoretical part includes a discussion of the common optical properties of elements, oxides, and sulfides under the reflected light microscope. Mineral deposits represent extraordinary metal concentrations that form by magmatic, magmatichydrothermal or hydrothermal processes in geodynamic environments typified by anomalously high thermal andor mechanical energy near plate boundaries. One of these districts includes the copperstone mine, which has yielded several hundred thousand ounces of gold spencer and others, 1988. Petrology and upb geochronology of footwall porphyritic. Codicil to the geophysical expression of selected mineral. Mineral deposits form in particular tectonic settings which are governed by plate tectonics. There has understandably been a fascination with giant mineral deposits. A geoscience australia project synthesising geology, geochronology, geodynamic analysis and tectonic modelling will give mineral explorers clearer information on where to prospect across eastern australia.
Asia geodynamics, mineral deposits, and metallogenic belt maps, and. Geodynamics, orogenic cycles and mineral systems 2. Effective cooperation on this project required that u. The data are suitable for use in geographic information systems gis or other database and geospatial software. More than a digital light table g a partington1 introduction the use of computers in mineral exploration in the last twenty years has dramatically changed the way. Uncovering phanerozoic mineral wealth geoscience australia. Iv characteristics of mineral deposits maria boni encyclopedia of life support systems eolss and seams in the rocks. Ontario geological survey openfile report, 5524 1984. The huajian gold deposit is hosted by a mesozoicaged volcanicintrusive complex that forms a part of a larger orogenic belt that is related to the. Applications of remote sensing systems to mineral deposit discovery, development and reclamation venessabennett rems 6022. The distribution of deposit types whose settings are tied to plate margin processes e. Pdf the characteristics, origins and geodynamic setting.
Various theories of ore genesis explain how the various types of mineral deposits form within. Geodynamic settings and tectonic model of skarn gold deposits in china. Mineral resource assessment of colombia hodges and others, 1984. Today, ore and ore deposits have become part of mainstream geologic studiesopaque minerals can reveal much about the evolution of a rock, and mineral deposits can reveal tectonic settings. Mineral scales and deposits scientific and technological approaches editedby drzahid amjad walsh university usa dr konstantinos d. Thus, in ancient continental margin settings identification of. Thus, distinct mineral deposits with certain characteristics of oreforming elements, orecontrolling structures, spatialtemporal distributions, and related magmatic rocks reflect their corresponding geodynamic framework. There are two main approaches to mineral deposit classification. Metallogenic belt and mineral deposit maps of northeast asia pamphlet to accompany. Almost every remote sensing system available can be applied. A scaleintegrated exploration model for orogenic gold deposits. Mineral deposits represent extraordinary metal concentrations that form by magmatic, magmatichydrothermal or hydrothermal processes in. Structure of the new database was created in 2012 and it is based on global geostandards geosciml and earthresourceml and classifications related to them. For example, the boddington deposit formed as an intrusionrelated cuau deposit that was overprinted by an orogenic gold system mccuaig et al.
Tectonic settings, geodynamics and temporal evolution of. The axis of the rift area may contain volcanic rocks, and active volcanism is a part of many, but not all active rift systems. The major mineral deposits and ernest henry iocg deposit red star overlain on the regional bouguer gravity anomaly map nakamura, 2016 marked with the major crustal boundaries gidyea suture zone and cork fault and major faults quamby fault, pilgrim fault, and cloncurry fault in the eastern fold belt. A metasomatized lithospheric mantle control on the. Here we show that the metallogenic architecture of the lithosphere is illuminated by the geochemical signatures of metasomatised mantle rocks and. Geodynamic settings and tectonic model of skarn gold. The conjunction of factors that lead to formation of giant gold. Mineralsystems approach definition, advantages and disadvantages lessons learnt and not learnt uram 2014.
This is a pdf file of an article that has undergone enhancements after. These maps are presented here in digital formats including arcgis file geodatabase. Knowledge of mineral systemsdeposit styles their critical features. Mineral deposits related to detachment faults formed within this tectonic setting and were the result of hydrothermal ascent of basin brines along detachment faults wilkins and others, 1986. Download the latest version of adobe reader, free of charge. A detailed gis compilation of northeast asia geodynamics, mineral. Mineral potential assessment mineral potential likelihood that an economic mineral deposits could have. Request pdf geodynamic settings of mineral deposit system mineral deposits represent extraordinary metal concentrations that form by magmatic.
A variety of geological guides may be used in mineral. The veins cut neoproterozoic rocks along contacts between granite intrusions and island arc metavolcanosedimentary sequence and ophiolitic rocks. Major types and time space distribution of mesozoic ore. The veintype gold mineralization in the eastern desert of egypt consists of sulphide minerals in stockwork quartz veins with hydrothermal alteration zones. Collection of data of this type is a part of the mission of the mineral resources program of the usgs. Geological significance of new zircon upb geochronology. The descriptive models are a more objective label, which describes the rocks and tectonic setting of the deposit. Numerous persons were also consulted regarding undescribed mineral deposits, and much valuable information was given by a. More information about viewing, downloading, and printing report files can be found here. In order to determine whether it is desirable to quantify mineraldeposit models further. Classification of mineral deposits into types using mineralogy with a probabilistic neural network. Major types and timespace distribution of mesozoic ore. Geological survey open file report 20061150 version 1.
Implications for transition from contractional crustal thickening to extensional thinning and geodynamic settings. Geodynamics and ore deposit evolution geode european. It is difficult to avoid including magmatic ore systems in these discussions, because they and hydrothermal mineral deposits within the same tectonic setting may. Geodynamic settings of mineral deposit systems journal. The characteristics, origins and geodynamic setting of supergiant gold metallogenic provinces article pdf available in science in china series d earth sciences 43. Most mineral deposit types are formed in geodynamic settings on the convergent margins fig. Geological setting the most important stibnite mineralizations in the western carpathians are located in four structural and metallogenic zones. An overview of resources, settings and processes australia produces more than 22 mineral commodities from a wide variety of deposit types, but 90% of. Pdf mineral deposits of north africa, mineral resource.
Request pdf geodynamic settings of mineral deposit system mineral deposits represent extraordinary metal concentrations that form by magmatic, magmatichydrothermal or hydrothermal processes. The gis data includes terrane polygons and selected major late cretaceous and tertiary strikeslip faults. Geodynamics and ore deposit evolution geode an esf scientific programme the european science. Then he must be thoroughly familiar with the many and varied species of earths. Geodynamic synthesis points to mineral deposit potential. In situ multiple sulfur isotope analysis by sims of pyrite. Demadis university of crete greece elsevier amsterdam boston heidelberg london newyork oxford paris sandiego sanfrancisco singapore sydney tokyo.
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