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On basic igneous rocks

Note: All information on soils were from the Land Resource Study 20 series of books (Volumes 1 to 5), published by the Land Resources Division, Ministry of Overseas Development , UK.

 

Seven associations are mapped on basic igneous rocks. The Mentapok Association occurs extensively on mountain ranges and should probably include both the Tinagat and Beruang Associations. The Malubok Association is also very similar to the Mentapok Association but it also contains a range of soils formed on miscellaneous rocks.

 

The Tiger, Table and Orchid Plateau Associations are, however, distinctive. The Tiger Association occurs on extinct volcanoes and is surrounded by the Table Association on lave flows. The Orchid Plateau Association occurs on the Orchid Plateau at a height of about 660 m asl.

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