Noddy 3D Modelling

This page houses links to the Noddy 3D Geological and Geophysical Modelling System. The Noddy modelling system allows you to rapidly build complex 3D geological models and calculate the resulting gravity and magnetic fields. It’s primary use in in teaching, although of course it does allow you to try out simply geological scenarios as well.

How Noddy Works:

In order to characterise the complex three dimensional structures that often cause geophysical anomalies it is necessary to have some understanding of the structural history of an area. The basis for this program is the ability to construct a complex geological history as a succession of relatively simple structural, sedimentary and igneous events. Each geological history is defined as a sequence of kinematic events, and each event is defined by a set of orientation, position and scaling parameters. The structural modelling used in this program were first written by M Jessell as part of an MSc at Imperial College, London University, in 1981, as an interactive map creation package, and later commercialised by www.encom.com.au after geophysical modelling capabilities and many other changes were made as part of an industry funded AMIRA collaboration between Monash University and the CSIRO. (Encom does not and will not support the version available here, so please don’t ask them).

The program consists of introducing geoelogical events to effect an infinite volume of rock. The displacement equations are defined explicitly or implicitly with respect to flat planes, so that the curvature of the earth is ignored. The displacement equations within this program are all unary, that is there is a one to one mapping of all points before and after each deformation event. The user is protected from these equations and is instead asked to describe the deformation in “normal” structural terms, such as strike and dip.

his

Manual (PDF)

Tutorials (PDF)

If you make a nice model, or class exercise, it would be great if you could send it to me mark.jessell@ird.fr and I will create a set of user supplied examples.
Known problems
1) With newer systems (VISTA, Windows 7) when you try to save files, the save dialog doesn’t have a space to type in the filename). Solution: start up noddy as administrator.
License:
As of May 2009 this software is no longer subject to an commercial release, and hence is freely distributable (and hence is no longer the object of professional support, you get what you pay for!).
This software is provided ‘as-is’, without any express or implied warranty. In no event will the authors be held liable for any damages arising from the use of this software.Permission is granted to anyone to use this software for any purpose, including commercial applications, and to alter it and redistribute it freely, subject to the following restrictions:1) The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.

2) Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.

3) This notice may not be removed or altered from any source distribution.

Document license

Noddy for Windows ’95, ’98 and Windows NT, 2000/XP, Vista
Version 7.11This version originally commercialised by Encom Technology Pty. Limited:www.encom.com.au

but now supplied by TecTask

www.tectask.org at no cost

PLEASE CONTACT TECTASK FOR ANY FURTHER INFORMATION, THIS SOFTWARE IS NO LONGER SUPPORTED BY ENCOM
AND ENCOM CANNOT BE HELD LIABLE FOR ANY USAGE OF THIS PRODUCT.
As of May 2009 this software is no longer subject to an commercial release, and hence is freely distributabe (and hence is no longer the object of professional support, you get what you pay for!).
This software is provided ‘as-is’, without any express or implied warranty. In no event will the authors be held liable for any damages arising from the use of this software.

Permission is granted to anyone to use this software for any purpose, including commercial applications, and to alter it and redistribute it freely, subject to the following restrictions:

1) The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.

2) Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.

3) This notice may not be removed or altered from any source distribution.

Download :  http://www.mediafire.com/?fbgp9obbbggzga2

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