Short Communication, Geoinfor Geostat An Overview Vol: 8 Issue: 6
Effective Use and Interpretation of Litho Geochemical Information in Regional Mineral Exploration Programs: Application of Geographic Data Systems (GIS) Technology
Joseph Salvator*
Department of Geography, Andra University Visakhapatnam, India
*Corresponding Author:
Joseph Salvator
Department of Geography
Andra University
Visakhapatnam, India
E-mail: josephsalvator@gmail.com
Received: November 10, 2020 Accepted: December 05, 2020 Published: December 12, 2020
Citation: Joseph Salvator (2020) Effective Use and Interpretation of Lithogeochemical Information in Regional Mineral Exploration Programs: Application of Geographic Data Systems (GIS) Technology. GeoinforGeostat: An Overview 8:6.276
Abstract
A Geographic data system (GIS), mutually with applied mathematics and geostatistical software package, has been accustomed compile, manipulate, analyses and visualize an outsized litho geochemical dataset collected from the Archean age Swayze greenstone belt (SGB) placed in northern Ontario, Canada. Altered samples from this information are known employing a form of univariate and variable applied mathematics and visual image techniques. Alteration maps area unit created for every methodology, and compared to famous gold mineralization exploitation the weights of proof technique. Major chemical compound information area unit interpolated exploitation totally different sample teams (all, altered, unaltered, normalized samples), and abnormal concentrations area unit separated from background exploitation breakpoints on likelihood plots of the information, in addition as statistics generated from WofE analysis. These maps are evaluated, exploitation WofE analysis, with relation to locations of famous gold prospects. The atypical normative mineral methodology is additional sensitive for distinguishing alteration in felsic rocks (felsic volcanic rocks, granitoids), whereas the volatile methodology is additional sensitive for detective work alteration in mafic volcanic rocks and matter rocks. Altered samples area unit characterized by higher SiO2, K2O and MnO concentrations, and lower MgO and TiO2 concentrations. Areas at intervals the greenstone belt characterized by high concentrations of CaO, Fe, K2O and Al2O3 were found to the simplest predictors of the famous gold prospects. Anomalously high concentrations of those oxides replicate carbonatization, Fe-carbonate alteration and potassic alteration trends, and indicate that these alteration designs area unit spatially associated with gold mineralization. The WofE methodology may be a helpful technique with that to judge the geochemical maps created during this paper.
Keywords: lithogeochemical, mineral exploration programs: Geographic data Systems (GIS) technology
A Geographic data system (GIS), mutually with applied mathematics and geostatistical software package, has been accustomed compile, manipulate, analyses and visualize an outsized litho geochemical dataset collected from the Archean age Swayze greenstone belt (SGB) placed in northern Ontario, Canada. Altered samples from this information are known employing a form of univariate and variable applied mathematics and visual image techniques. Alteration maps area unit created for every methodology, and compared to famous gold mineralization exploitation the weights of proof technique. Major chemical compound information area unit interpolated exploitation totally different sample teams (all, altered, unaltered, normalized samples), and abnormal concentrations area unit separated from background exploitation breakpoints on likelihood plots of the information, in addition as statistics generated from WofE analysis.
These maps are evaluated, exploitation WofE analysis, with relation to locations of famous gold prospects. The atypical normative mineral methodology is additional sensitive for distinguishing alteration in felsic rocks (felsic volcanic rocks, granitoids), whereas the volatile methodology is additional sensitive for detective work alteration in mafic volcanic rocks and matter rocks. Altered samples area unit characterized by higher SiO2, K2O and MnO concentrations, and lower MgO and TiO2 concentrations. Areas at intervals the greenstone belt characterized by high concentrations of CaO, Fe, K2O and Al2O3 were found to the simplest predictors of the famous gold prospects. Anomalously high concentrations of those oxides replicate carbonatization, Fe-carbonate alteration and potassic alteration trends, and indicate that these alteration designs area unit spatially associated with gold mineralization. The WofE methodology may be a helpful technique with that to judge the geochemical maps created during this paper.
The WofE technique is helpful not just for scrutiny geochemical anomalies to the situation of famous gold prospects, however conjointly for providing a quantitative live of association between anomalies and gold prospects. moreover, the gold potential maps generated exploitation WofE not solely highlight (or predict) famous areas of gold mineralization, however conjointly establish high potential areas wherever no famous mineralization happens. variety of areas at intervals the SGB are known as having high gold potential on several of the geochemical maps created during this paper. several of those areas coincide with areas of famous gold mineralization; but others area unit enigmatic and look follow-up exploration.
Litho geochemical information, comprising each major chemical compound and trace parts, area unit oftentimes employed in earth science mapping and tectonic studies to classify rock sorts, establish chemical variations because of fractionation trends, and characterize tectonic environments. applied mathematics and special analyses of litho geochemical information for mineral exploration involve the identification of geochemical anomalies (e.g., zones of elevated concentrations of chemical compound or trace parts which will be reflective of mineralization). A Geographic data system (GIS) offers nice potential as a tool for analyzing geochemical information for each lithological classification and mineral exploration applications. GIS aren't solely capable of routine show of geochemical information, however conjointly provides a variety of special analysis tools with that to question, manipulate, visualize and analyses the information. as an example, GIS are used for generating exploration favorability maps.
The objectives of this paper are: (1) to demonstrate the appliance of some GIS-based ways for analyzing, deciphering Associate in Nursing visualizing litho geochemical information over an Archean age greenstone belt in Ontario that's presently being assessed for gold potential; (2) to spot and interpret multi-element geochemical patterns as they relate to gold mineralization at intervals the greenstone belt. variety of numerous litho geochemical datasets are assembled over the Swayze greenstone belt (SGB) in northern Ontario by trade and government agencies (provincial and federal) to help in in progress mapping and regional exploration. The methodologies set forth during this paper may be accustomed assist geologists in aggregation and analyzing their own geochemical datasets with the help of an electronic database, a computer or UNIX-based GIS, and therefore the use of visual image, applied mathematics and geostatistical analysis software package. the fabric during this paper is expounded to a companion paper that centered on ways for distinguishing altered samples from constant geochemical information. This paper in brief reviews some components of this work however deals principally with GIS ways for process and mixing geochemical information into maps helpful for gold exploration.
