Territory Stories

Report on the Land Units of the Coastal Plains



Report on the Land Units of the Coastal Plains

Other title

Soils of the coastal plains, Northern Territory, Australia.


Land Conservation Section


E-Publications; E-Books; PublicationNT




Coastal Plains of the Northern Territory.; Soils report


These reports describes the land resource mapping over the Northern Territory coastal plains region. The surveyed area was mapped at a scale of 1:50,000. The mapped land units are described using the dominate soils, topography and vegetation. The potential land use and limitations for each land unit are also briefly described.


There are three different reports attached to this record: Report on the land units of the coastal plains / K.J.Day; Soils of the coastal plains, Northern Territory, Australia / A.D.L. Hooper; and Soils report (coastal plains survey 1968,69,70 / K.J. Day




Coastal ecology - Northern Territory; Land Unit mapping; Coastal Plains

Publisher name

Animal Industry and Agriculture Branch, Northern Territory Administration

Place of publication

Darwin, N. T.


3 volumes, various pagings.

File type




Copyright owner

Animal Industry and Agriculture Branch, Northern Territory Administration



Parent handle


Citation address


Related items

https://hdl.handle.net/10070/506884; https://hdl.handle.net/10070/506885

Page content

7. with many rivers in this region) ceases to flow and salt water penetrates far inland. Under the influence of a large tidal range periodic flooding by saline water is common in the Littoral and parts of the Copeman land system. Gc layers dominate the Carpentaria series where drying out sometimes occurs but under permanently wet conditions mangroves f~ish in a G or Gp layer and Saline Muds occur. The plains show evidence of former channels (as in the Copeman land system ~f Fig. 1A) cut off meanders and levees and in cross section form a series of well defined steps. Flooding on the higher, level areas of the Cyperus land system is at present confined to ponding of rain water in the wet season. Evaporation and concentration of salts under this condition has led to the formation of lime-rich Al layers in the Carmor series. Similar layers with con cretionary lime and self mulching (As layer) are diagnostic of the Adelaide series confined to levees. Eb and El layers of the Carmor series have strongly alkaline reactions similar to their associated Al or As layers. Where drainage of accumulated surface water occurs in the Copeman land system, no precipitated salts are found. Ad layers with a lower reaction predominate over saline Eb and G layers and constitute the Wildman series~ Gp layers appear to exert no influences over the present day surface soil characteristics but indicate the 0~ of exten~of mangrove a~~~ae-~~er bank~~~the former course of the Adelaide River. Inland of the former~ver channel drainage water from the higher Kosher land system was accumulated and led to the formation of swamplands now represented in the Fp layers. Where these occur with Lg layers salinities are lower and characterise the Carmor L phase soils. Eb and G layers subsequently laid over the Fp layer have been partially leached and salt contents are in the lower range of those quoted for the Eb and G layers.