Launceston geomorphology - structural polygons

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This dataset (geomorphology_poly_structural.shp) contains polygons delineating structural aspects of the geomorphology in the area covered by the Tasmanian Landslide Hazard Map Series: Launceston. The data has been generated by aerial photography interpretation. The shapefile has been generated using ArcGIS software.

Launceston geomorphology - depositional polygons

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This dataset (geomorphology_poly_depositional.shp) contains polygons delineating depositional geomorphic features of the area covered by the Tasmanian Landslide Hazard Map Series: Launceston. The data has been generated through a combination of simplification of surficial deposits shown in the seamless 1:25 000 geology data held by MRT and aerial photography interpretation. The shapefile was created using ArcGIS software.

Launceston geomorphology - structural surface dip direction and slope points

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This dataset (geomorphology_point_dips.shp) contains data in point form showing the dip direction and slope for structural slope surfaces identified within the area of the Tasmanian Landslide Hazard Map Series: Launceston. The surfaces themselves are delinated as polygons within the accompanying Launceston geomorphology - structural polygons dataset (geomorphology_polygon_structural.shp). This point shapefile has been generated using ArcGIS software.

Launceston geomorphology - fault polylines

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This dataset (geomorphology_line_faults.shp) is a shapefile generated using ArcGIS containing polylines delineating faults and lineaments for the area covered by the Tasmanian Landslide Hazard Map Series: Launceston. Most of the data comes directly from the 1:25 000 seamless geology data held by Mineral Resources Tasmania and has been edited to only contain faults and lineaments within the area of interest. Faults with no geomorphic implications have been removed. The additional features are based on interpretation of aerial photography.

Launceston geology - dolerite talus polygons

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This dataset (geology_doleritetalus_poly.shp) contains polygons delineating areas of dolerite talus in the Launceston area as part of the Tasmanian Landslide Hazard Map Series. The data within this dataset is extracted directly from the geological polylgon dataset based on a query on the field SYMBOL. This unit is depicted on the rockfall map to indicate areas that could be rock fall source zones if disturbed.

Geomorphological polylines of Glenorchy

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This layer shows geomorphological features (lines) of the Glenorchy Area as part of the Tasmanian Landslide Hazard Map Series, 2005. Features consist of convex breaks in slope that define features such as tops of marine cliffs, tops of quarry walls, tops of escarpments.

Launceston geomorphology - knickpoint location points

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This dataset (geomorphology_point_knickpoints.shp) contains points identifying the location of significant knickpoints within in the area covered by the Tasmanian Landslide Hazard Map Series: Launceston. The data has been generated by aerial photography interpretation and the shape file created using ArcGIS software.

Geomorphological polylines of Hobart

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This layer shows geomorphological features (lines) of the Hobart Area as part of the Tasmanian Landslide Hazard Map Series, 2005. Features consist of convex breaks in slope that define features such as tops of marine cliffs, tops of quarry walls, tops of escarpments.

Geomorphological polygons of Glenorchy

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This layer shows geomorphological polygons of the Glenorchy Area as part of the Tasmanian Landslide Hazard Map Series, 2005. Features consist of surficial units identified in the 1:25 000 geology map of Tasmania and reclassified based on depositional environment. The features provide an indication of surficial units that were thick enough/ important enough to be depicted in the geological mapping process.

Launceston - potential landslide hazard zone polygons

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This layer shows landslide hazard zones of the area covered by the Tasmanian Landslide Hazard Map Series: Launceston. This data was created through a grid based modelling process and converted to shapefiles for distribution. This grid based data has been converted to a shapefile fro distribution. There is consequently, some pixellisation of the polygon boundaries.