NDLI: Porphyry Copper Deposit Tract Definition – A Global Analysis Comparing Geologic Map Scales

Content Provider	Springer Nature Link
Author	Raines, Gary L. Conrs, Katherine A. Chorlton, Lesley B.
Copyright Year	2007
Abstract	Geologic maps are a fundamental data source used to define mineral-resource potential tracts for the first step of a mineral resource assessment. Further, it is generally believed that the scale of the geologic map is a critical consideration. Previously published research has demonstrated that the U.S. Geological Survey porphyry tracts identified for the United States, which are based on 1:500,000-scale geology and larger scale data and published at 1:1,000,000 scale, can be approximated using a more generalized 1:2,500,000-scale geologic map. Comparison of the USGS porphyry tracts for the United States with weights-of-evidence models made using a 1:10,000,000-scale geologic map, which was made for petroleum applications, and a 1:35,000,000-scale geologic map, which was created as context for the distribution of porphyry deposits, demonstrates that, again, the USGS US porphyry tracts identified are similar to tracts defined on features from these small scale maps. In fact, the results using the 1:35,000,000-scale map show a slightly higher correlation with the USGS US tract definition, probably because the conceptual context for this small-scale map is more appropriate for porphyry tract definition than either of the other maps. This finding demonstrates that geologic maps are conceptual maps. The map information shown in each map is selected and generalized for the map to display the concepts deemed important for the map maker’s purpose. Some geologic maps of small scale prove to be useful for regional mineral-resource tract definition, despite the decrease in spatial accuracy with decreasing scale. The utility of a particular geologic map for a particular application is critically dependent on the alignment of the intention of the map maker with the application.
Starting Page	191
Ending Page	198
Page Count	8
File Format	PDF
ISSN	15207439
Journal	Natural Resources Research
Volume Number	16
Issue Number	2
e-ISSN	15738981
Language	English
Publisher	Kluwer Academic Publishers-Plenum Publishers
Publisher Date	2007-05-16
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Map scale weights-of-evidence porphyry deposits of world Hydrogeology Sedimentology Economic Geology Math. Applications in Geosciences
Content Type	Text
Resource Type	Article
Subject	Environmental Science

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Where Are Porphyry Copper Deposits Spatially Localized? A Case Study in Benguet Province, Philippines

Quantitative Analysis of Scale of Aeromagnetic Data Raises Questions About Geologic-Map Scale

Map Scale Effects on Estimating the Number of Undiscovered Mineral Deposits

Conditional Independence Test for Weights-of-Evidence Modeling

GIS-Based Slope Stability Analysis, Chuquicamata Open Pit Copper Mine, Chile

Are Fractal Dimensions of the Spatial Distribution of Mineral Deposits Meaningful?

Evaluation of Weights of Evidence to Predict Epithermal-Gold Deposits in the Great Basin of the Western United States

A Hybrid Fuzzy Weights-of-Evidence Model for Mineral Potential Mapping

Statewide Estimates of Undiscovered Deposits of Gold, Silver, Copper, Lead, and Zinc

Porphyry Copper Deposit Tract Definition – A Global Analysis Comparing Geologic Map Scales

Similar Documents

Where Are Porphyry Copper Deposits Spatially Localized? A Case Study in Benguet Province, Philippines

Quantitative Analysis of Scale of Aeromagnetic Data Raises Questions About Geologic-Map Scale

Map Scale Effects on Estimating the Number of Undiscovered Mineral Deposits

Conditional Independence Test for Weights-of-Evidence Modeling

GIS-Based Slope Stability Analysis, Chuquicamata Open Pit Copper Mine, Chile

Are Fractal Dimensions of the Spatial Distribution of Mineral Deposits Meaningful?

Evaluation of Weights of Evidence to Predict Epithermal-Gold Deposits in the Great Basin of the Western United States

A Hybrid Fuzzy Weights-of-Evidence Model for Mineral Potential Mapping

Statewide Estimates of Undiscovered Deposits of Gold, Silver, Copper, Lead, and Zinc

Porphyry Copper Deposit Tract Definition – A Global Analysis Comparing Geologic Map Scales