USGS - science for a changing world

GMEG - Mineral and Environmental Resources

Complex systems analysis of basin margins in southwestern North America

Project status is complete. Please check the project list for currently active projects

Staff

Tasks

Project summary:

This project uses complex systems modeling as a unifying concept to undertake a spectrum of geoscience related problems including geologic factors of non-point source pollution; human and animal diseases controlled by geologic factors; genesis, life cycle, environmental, and socio-economic factors of ore deposits; and factors controlling the distribution of physical and chemical transport properties. The project goals are to create a general framework for solving problems that can include political, economic, social, and ecological factors in addition to traditional factors from the physical sciences (e.g. temperature, stress field, depth of burial) and to apply the framework to several geoscience problems.

Objectives:

We will attack several problems using complex systems theory organized into five tasks. The tasks are:

  1. Models of porphyry copper systems and their interaction with environmental, economic, social, and climatic change variables
  2. Physical properties of basin marginal zones
  3. Transport of chemical species (some of which are contaminants) in basin marginal zones
  4. Predictive modeling of diseases whose propagation factors depend strongly on geologic and climatic variables (for example, valley fever - coccidioidomycosis) and non-point source pollution problems (for example, selenium contamination from shales)
  5. To host the biannual Conference on Modeling Complex Systems.

Scientists from Water Resources and Biological Resources Disciplines will participate in some project tasks. The tasks cover a diverse suite of subjects but are related to each other in multiple ways. Geographically, the project will focus on a zone around the margin of selected basins. This zone includes some bedrock of the bounding ranges and the shallower parts of the basin (generally, fill depth of 1 km or less). These areas are termed basin marginal zones (basin margins for short) and include the lithologies and structures of interest, as the central part of the basins are generally too deep to be resolved and the cores of the ranges are usually devoid of deposits. In most cases the important structures geologically are those associated with the basin margin.

Modern complex modeling theory combined with the significant advances in computer capacity to process large amounts of data and produce complex visualizations in two and three dimensions provides an opportunity to explore new models of geoscientific processes and their connections to the ecosystem. By integrating fuzzy logic theory with that of complex systems modeling, it is now possible to include links in the models to related or constraining processes such as economic factors, social attitudes, and urbanization effects and to evaluate the impact of these links and their effects over time on the model. Once such a model is produced and validated, it can be used to make forward projections and predictions based on various scenarios. The model may evolve dynamically with changing or newly added links or effects. It should be possible to include and evaluate the effects of factors which have been traditionally difficult to evaluate such as environmental impact.

Return to: All Mineral Resource Projects | Center Homepage

 
 Mineral Resources Eastern /  Central /  Western /  Alaska /  Minerals Information
Crustal Geophysics and Geochemistry /  Spatial Data

Accessibility FOIA Privacy Policies and Notices

Take Pride in America logo USA.gov logo U.S. Department of the Interior | U.S. Geological Survey
URL: http://minerals.usgs.gov/west/projects/cmplxsys.htm
Page Contact Information: WMR Webmaster
Page Last Modified: 13-Dec-2012@15:14