surfaces. (Cenchrus ciliaris) now common]. Back plains: up to 1.6km Mainly dark wide, with self-mulching Mitchell grass and ribbon slopes less heavy clays: grass-bluegrass than 0.1% but Cununurra grassland with scattered attaining 0.5% family (12). trees and shrubs; also MGAP at margins; with With dark large areas of annual 50% 4 11 linear brown grasses and forbs. RAPP depressions up Astrebla spp. and 50% to 400m wide clays: Chrysopogon spp. - and 1m deep; Wonardo Dichanthium fecundum hummocky family (14). communities (47, 48); sealed surfaces Gilgais locally 37b. with gilgais common. locally. Dark grey Tall to medium perennial crusty heavy grassland, or annual Depression: clay: grasses and forbs, up to 1.2km Myroodah varying according to wide and 1m family (13), 5 6 conditions of flooding. RAPP deep; short commonly Chrysopogon spp. - marginal slopes showing Dichanthium fecundum up to 1%. recent and Chrysopogon spp. alluvial (48, 49). influences. Minor channels and billabongs: Brownish, Grassy woodland fringing channels up to massive, communities, varying 3m deep and 6 10 intractable, according to conditions of FRGP 275m wide; silty to heavy flooding. E. microtheca billabongs up to clays (30). alliance (20a, 20c, 21). 3.2km long, often in linked series. Gordon land system (Gor), size: 1012km2, publication source: OVC Low hilly to undulating limestone country scattered throughout the southern half of the Ord-Victoria survey area.
surfaces. (Cenchrus ciliaris) now common]. 4 11 Back plains: up to 1.6km wide, with slopes less than 0.1% but attaining 0.5% at margins; with linear depressions up to 400m wide and 1m deep; hummocky sealed surfaces with gilgais locally. Mainly dark self-mulching heavy clays: Cununurra family (12). With dark brown clays: Wonardo family (14). Gilgais common. Mitchell grass and ribbon grass-bluegrass grassland with scattered trees and shrubs; also large areas of annual grasses and forbs. Astrebla spp. and Chrysopogon spp. - Dichanthium fecundum communities (47, 48); locally 37b. MGAP 50% RAPP 50% 5 6 Depression: up to 1.2km wide and 1m deep; short marginal slopes up to 1%. Dark grey crusty heavy clay: Myroodah family (13), commonly showing recent alluvial influences. Tall to medium perennial grassland, or annual grasses and forbs, varying according to conditions of flooding. Chrysopogon spp. - Dichanthium fecundum and Chrysopogon spp. (48, 49). RAPP 6 10 Minor channels and billabongs: channels up to 3m deep and 275m wide; billabongs up to 3.2km long, often in linked series. Brownish, massive, intractable, silty to heavy clays (30). Grassy woodland fringing communities, varying according to conditions of flooding. E. microtheca alliance (20a, 20c, 21). FRGP Gordon land system (Gor), size: 1012km2, publication source: OVC Low hilly to undulating limestone country scattered throughout the southern half of the Ord-Victoria survey area.