Help/How to navigate the Harris Greenstone Belt Online GIS

Most of this page is applicable to both the java and no-java versions of the application. Help specifically for the java application is written in italics.

This page is best viewed at 1024 x 768 resolution, with at least 32768 colours.

This mapping system allows the user to add a variety of themes, zoom in and out, pan, and select the attributes of displayed themes. Please note that some layers have a display scale threshold. e.g. Map symbols only display when zoomed in at scales greater than 1:250,000.

The mapping system starts with the lakes theme (vector) active (this layer cannot be turned off) displayed over the magnetics (TMI) image. The user can add themes by selecting them from the menu at the left of the page.

Basic navigation is done using the 4 buttons above or at the right of the image: (Holding the cursor over the icon displays the button function.)

This button is for zooming in. Select this button, drag a box in the main map and the view will redraw, zoomed in to the selected box. In the no-java version, just click in the map rather than dragging a box.
This button is for zooming out. Select this button, click on a point in the main map and the view will redraw, zoomed out with the selected point in the centre of the view.
Note: There are limits on how far you can zoom in and out.
This button is for panning. Select this button, click on a point in the main map and the view will redraw, with the selected point in the centre of the view.
This button is for querying displayed features. Select this button, click on a feature in the main map and attributes of the selected feature will be displayed in a popup window. After querying, uncheck this button to continue using the other navigation tools.
This button is for querying displayed features. Select this button, drag a box in the main map and attributes of all features within the box will be displayed in a popup window.

By checking the checkboxes in the menu on the left the user can select multiple vector and raster themes to overlay on the map.

Click to reset the view to the full extent of the map. (Approximate scale 1:806,000)

At the right is a link to the key. This pop up window shows a legend for displayed themes and their associated label values. Z scalebars with relevant units are also shown for raster images. For a full description of the geology units click the Detailed Geology Legend link.

Generates a template of current view to print.

The Overview map, at the bottom of the screen, shows the location of the main view (displayed as a black rectangle) in relationship to the regional locality of the map area.

For further information contact us (minerals.feedback@ga.gov.au).