Territory Stories

The land resources of Cobourg Peninsula



The land resources of Cobourg Peninsula

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by B. Wood and D. Sivertsen


Wood, B.; Sivertsen, D.; Conservation Commission of the Northern Territory


E-Publications; E-Books; PublicationNT




Cobourg Peninsula


Made available via the Publications (Legal Deposit) Act 2004 (NT).; This report describes a land system survey over the Cobourg Peninsula broadly describing landform, soils and vegetation to assist the effective planning and management of the area as a National Park.



Table of contents

1. Introduction -- 2. Summary Descriptions -- 3. Land Systems -- 4. Soils -- 5. Vegetation -- Appendices -- Acknowledgements.




Land use -- Northern Territory -- Cobourg Peninsula; Vegetation mapping -- Northern Territory -- Cobourg Peninsula

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Conservation Commission of the Northern Territory

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iv, 80, [6] p. : col. ills. ; 30 cm.

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http://www.ntlis.nt.gov.au/metadata/export_data?type=html&metadata_id=2DBCB77120E006B6E040CD9B0F274EFE; http://www.ntlis.nt.gov.au/metadata/export_data?type=html&metadata_id=2DBCB77120E006B6E040CD9B0F274EFE [NTLIS Metadata Tool]

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remnants (Irgul land system). Lower in the landscape, the Tertiary surface becomes gently undulating (Wangarlu land system), whilst on the sub-coastal fringes this system is replaced by gently inc~ined plains formed on Quaternary deposits (Mountnorris land system). Group 3. Land systems of the coastal fringe The Peninsula's coastal fringe is made up of either relict or contemporary beach ridges with an active beach front (Dune land system) or estuarine plains and mud flats, characterized by dense mangrove communities (Littoral land system). 2.2 Soil Summary The soils of Cobourg Peninsula can be groupedointo four assoc iations based on parent material and geomorphology. The associated families of soil and their characteristics are outlined in Table 5.1. Soil s of the laterized surface : This association includes the red and yellow earths of the gently undulating plains and . the siliceous sands and humic gleys of the drainage a,reas. Six discrete families of soils have b~en recognized. In general the earth soils are well drained, with the lateritic earths containing significant quantities of ferruginous and bauxitic gravel s. The sands and humic gl eys of the drainage floors and seepage a,reas are poorly drained and will remain wet for long periods. Soils of the hills, breakaways and lpw scarps : Skeleta1 soils occur wherever slopes are high. They are shallow, stony soil s occurring throughout the upland areas of the Peninsula. Soils of the undulati~g. lowland "plain: This association includes yellow earths, podzolics, clays and earthy sands. With the exception" of earthy sands the soil s exhibit some drainage impedence. Four soil families have been recog nized. Yellow earths and podzol ics are by far the most extensive. Areas of non-cracking clays and earthy sands are - 6

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