To receive a free evaluation license with demo plate models—or to purchase a full license—contact us at 303-261-8107, ext. 10, or Sales@RothwellGroup.com.

Versions of PaleoGIS are available for ArcGIS 9.3.1 and later. To use PaleoGIS with ArcGIS 9.3.1, ESRI Service Pack 1 or 2 must be installed. For all more recent versions of ArcGIS, no Service Packs are required and any may be installed. PaleoGIS is compatible with all ArcGIS for Desktop license levels:

• Basic (formerly ArcView)
• Standard (formerly ArcEditor)
• Advanced (formerly ArcInfo)

To determine which version of PaleoGIS to use with your version of ArcGIS, please contact us.

PaleoGIS requires use of a third-party plate model to operate. PaleoGIS includes four demonstration plate models, as well as the full EarthByte model. Full versions of the other demo models are available for purchase from their respective vendors. Additional commercial and academic plate models are available from other vendors, as well. Rothwell does not build or maintain any plate models for use with PaleoGIS.

The differences depend on the plate model. Generally, demo models are either older versions of the model or they include fewer sub-plates, a truncated age range or less geographic area than the full-production versions. The exception is “Earthbyte_Seton2012″ which is a full, open-source model. If it was not included with your version of PaleoGIS, this full model can be downloaded from EarthyByte’s Resources page.

A tectonic plate model illustrates the movement of Earth’s plates over a specified span of geologic history. Each model is different because it incorporates the findings of scientific research on various regions and/or ages, as determined by the institution that published the model. Because research is on-going, published plate models are generally updated on a regular basis.

Plate models consist of two main parts:

1. Maps of present-day tectonic plates, with varying levels of detail depending on the model
2. Tables of “poles of rotation” which define each plate’s location at various ages over the time span of the model (When a plate model is “reconstructed” to an age selected by the user, PaleoGIS moves all plates to their paleo-locations based on the model’s rotation table.)

Models for use in PaleoGIS are delivered as Microsoft Access databases (.MDB files), also referred to by Esri as “personal geodatabases.”

In order for PaleoGIS to be enabled:

1. The PaleoGIS extension must be turned on in the ArcMap Extensions.
2. The PaleoGIS: Basic Functions toolbar must be visible.
3. A valid PaleoGIS license file must be located in the PaleoGIS installation directory, at C:\Program Files (x86)\Rothwell\PaleoGIS\.

The pixel method of raster reconstruction converts the raster to a point feature class, then reconstructs the points to the requested age. After the points are reconstructed they are converted back to a raster, which is the final reconstruction output.

The warp method “cookie cuts” the raster into smaller rasters (“raster fragments”) which correspond with the plate polygons. The raster fragments are then warped into their reconstructed positions using a mathematical rubber-sheeting algorithm. Finally, the warped raster fragments are mosaiced back into a single raster, which is the final reconstruction output.

Yes. Please contact us for documentation on how to add deformation to rigid plate models.

Yes. We can provide documentation to help you build your own plate model. Please note that this is a substantial undertaking. Your organization may find it more effective to purchase a third-party plate model as a starting point, then make changes to incorporate your proprietary data.

Rothwell offers a Plate Model Editing workshop. Please contact us about this workshop, or designing custom training to meet your specific instructional needs, at 303-261-8107, ext. 10, or Sales@RothwellGroup.com.

Yes. PaleoGIS includes an “un-reconstruct” function that performs a reverse reconstruction, from a past age to the present. In PaleoGIS versions 4.2.x and later, both vector and raster data can be un-reconstructed. In PaleoGIS versions 4.1.x and earlier only vector data can be un-reconstructed.

To un-reconstruct data, follow these steps:

1. Run a reconstruction to the age of interest.
2. Add to the reconstructed data frame the data layer that you want to un-reconstruct. This data can be existing data that corresponds with the reconstruction age, or it can be a new layer you might have created based on reconstructed features in the reconstructed map. There is no need to add any special attributes (such as appearance, disappearance or plate code) to the data layers that are to be un-reconstructed. These attributes will be added automatically during the un-reconstruct process.
3. In the Table of Contents, right-click on the layer to be un-reconstructed, then select Un-Reconstruct from the PaleoGIS context menu.
4. PaleoGIS will perform the process to intersect the data with the reconstructed plate model, then move the data to its present-day position.
5. When complete, the new layer will be added to the present day (topmost) data frame, where it will be given its original name with an “_0” appendage.
6. To view the un-reconstructed data, activate the Present Day (topmost) layer.

Not in one step. If you have data for a specific age and you would like to see its location at a different age, first “un-reconstruct” the data to the present day. Then reconstruct the data to the age of interest.

You do not need to be an administrator to run PaleoGIS, but you do need to be an administrator to install the software. In addition, during normal operation PaleoGIS writes to certain directories and files on your computer which must be read/write accessible from within your user account, regardless of whether you are an administrator or not.

• By default in PaleoGIS versions 4.2.x and later, the directories that are written to (Cache, Log, Scratch and Settings) are located at C:\Users\UserName\AppData\Roaming\Rothwell\PaleoGIS\.
• Earlier versions write to the directory at C:\Users\UserName\AppData\Local\Temp\ and the PaleoGIS installation directory at C:\Program Files (x86)\Rothwell\PaleoGIS\.
• In all versions you have the option to change the Scratch and Cache paths from their default locations, as long as yhttp://www.paleogis.com/wp-admin/post.php?post=238&action=editou move them to locations where you have read/write access. It is best for these to be local, hard disk paths (i.e. C:\Folder\SubFolder\), rather than UNC or shared network paths.

Yes. Before starting an animation, turn off map redrawing by clicking on the Pause Drawing button ( || ) at the lower left corner of the map. This eliminates time of redrawing the map frame between each animation step, while still saving the animation frames correctly. This can save significant time when creating an animation with many layers or large data sets. Remember to turn map drawing back on when you are ready for the map to refresh normally again.

Please include all of the following information to help us to diagnose the problem as quickly as possible:

1.   Brief description of the problem and what feature of PaleoGIS you were using when it occurred
2.   ArcGIS version and which service packs, if any, are installed (In ArcMap, see: Help → About window)
3.   PaleoGIS version installed (Open the PaleoGIS Configuration window then click the About PaleoGIS button. The version number is in the bar at the top of the window that opens.)
4.   Operating system are you are using (Windows XP, Vista or Windows 7) and whether it is 32- or 64-bit
5.   Reconstruction/analysis information:

• Name of the plate model you were using when the error occurred
• Reconstruction age or analysis parameters
• Which “fixed” plate you were using, if any

6.   Information about user layers:

• Type of user layers (point, line, polygon or raster) you were reconstructing, if any
• Anything special about the user layers (e.g., they are very large, they overlap the 180 longitude line, etc.)

7.   Screenshot attachment of the error message that appears (Expand the More information section of the error message window, then copy and paste all of the content into your message.)
8.   Screenshots attachments of reconstruction/analysis results, if applicable