2003 Award in Excellence – WSSPC

2003 Award in Excellence – Western States Seismic Policy Council

WSSPC Awards in Excellence 2003

Awarded Category: Use of New Technology
Program Name: Colorado Late Cenozoic Fault and Fold Database and Internet Map Server (map superseded by ON-001 Colorado Earthquake and Fault Map)
Administering Agency: Colorado Geological Survey
Contact: Matt Morgan,

The product given this award is Information Series 60a, the Colorado Department of Natural Resources’ first fully web-based publication, entitled “Colorado Late Cenozoic Fault and Fold Database and Internet Map Server” by Widmann, B.L., Kirkham, R.M., Morgan, M.L, and Rogers, W.P., with contributions by Crone, A.J., Personius, S.F., and Kelson, K.I., and GIS/Web design by Morgan, K.S., Pattyn, G.R., and Phillips, R.C. This publication contains detailed information about nearly 300 faults and folds that are known or suspected to have moved during the Late Cenozoic (approximately the last 23.7 million years). It is part of the Colorado Geological Survey’s (CGS) ongoing efforts to promote public awareness of Colorado’s seismic hazards by identifying and characterizing potentially active structures. Colorado’s current stress regime was initiated during the beginning of the Miocene Epoch (25 to 28 million years ago), and although the extensional stress regime has probably evolved and changed locally, the overall tectonic environment remains essentially the same today. Structures that have been active under this stress regime in the past may be active in the future as long as this stress regime continues.

The web-based format of this publication allows for the integration of a graphic display (map) and a comprehensive database into a user-friendly interface using Autodesk MapGuide in conjunction with Macromedia ColdFusion. The map server allows users to view the faults and folds in Colorado on a topographic base map. Clicking on a desired structure establishes a link to the database and brings forth a multi-page, detailed report for that structure. The report contains a multitude of information including geographic location, geologic setting, sense of movement, age of faulted deposits, summaries of trenching investigations, references, and much more. Those who are familiar with the formal name of any fault or fold may also search simply by selecting that structure name from a pop-up menu. This search allows the user to view the requested datasheet as well as the location of the structure on the map. The dual method allows a spatial or non-spatial search, so that even if the user does not know where the structure is located, full information as well as the structure, can be found. Additionally, users of the site may download the Access database, free of charge, which contains all but the spatial (map) information, allowing for endless possibilities in querying the data. The web-based format allows for continuous data updating and quick delivery of newly acquired information without the added time and cost of generating new publications. This publication is a valuable and efficient resource to government planners, private developers, and anyone interested in earthquake hazards and the activity of faults and folds in Colorado.

Link to WSSPC