attaining 10%; colluvial mantles. Rocky plateaux and hills: flat or Much gently sloping Open spinfex with sandstone plateaux to 150m scattered stunted outcrop with high, with steep trees, much bare 4 28 some reddish HSHP escarpments; hills rock. Triodia gravelly to 90m high with intermedia skeletal soils slopes up 70%, community (57). (24). and basal scree slopes up to 45%. Hill-footslopes: concave up to 10% Much outcrop and up to 1.6km with some long; dissected up 5 17 yellowish stony As for unit 4. HSHP to 9m into narrow skeletal soils spurs with marginal (24). slopes up to 60%; colluvial mantles. Valley floor slopes: mainly less Probably than 2% and up to brownish stony Mixed open grassy 1.6km long; sands and woodland 6 8 ASGP dissected up to 3m loams over red communities (1f, with local slopes to clay: Moonah 38c, locally 15). 10%; sealed, family (17). scalded surfaces. Low woodland with Drainage floors: Brownish Triodia bitextura. up to 400m wide, loamy alluvial 7 3 Bauhinia SSPP gradients 1 in 100 soil: Robinson cunninghamii to 1 in 500. family (21) alliance (38a). up to Channels: 30m wide and 4.5m deep, gradients FRIP Bed-loads Fringing ranging from 1 to 60% 8 11 mainly sand communities (40, 30 in hillslope FRGP and pebbles. 41). channels to 1 in 40% 500 in main channels. Buchanan land system (Bch), size: 1057km2, publication source: OVC Gently undulating sandy country in the central-western part of the Ord-Victoria survey area. Location map showing coverage of Buchanan land system defined by black region.
attaining 10%; colluvial mantles. 4 28 Rocky plateaux and hills: flat or gently sloping plateaux to 150m high, with steep escarpments; hills to 90m high with slopes up 70%, and basal scree slopes up to 45%. Much sandstone outcrop with some reddish gravelly skeletal soils (24). Open spinfex with scattered stunted trees, much bare rock. Triodia intermedia community (57). HSHP 5 17 Hill-footslopes: concave up to 10% and up to 1.6km long; dissected up to 9m into narrow spurs with marginal slopes up to 60%; colluvial mantles. Much outcrop with some yellowish stony skeletal soils (24). As for unit 4. HSHP 6 8 Valley floor slopes: mainly less than 2% and up to 1.6km long; dissected up to 3m with local slopes to 10%; sealed, scalded surfaces. Probably brownish stony sands and loams over red clay: Moonah family (17). Mixed open grassy woodland communities (1f, 38c, locally 15). ASGP 7 3 Drainage floors: up to 400m wide, gradients 1 in 100 to 1 in 500. Brownish loamy alluvial soil: Robinson family (21) Low woodland with Triodia bitextura. Bauhinia cunninghamii alliance (38a). SSPP 8 11 Channels: up to 30m wide and 4.5m deep, gradients ranging from 1 to 30 in hillslope channels to 1 in 500 in main channels. Bed-loads mainly sand and pebbles. Fringing communities (40, 41). FRIP 60% FRGP 40% Buchanan land system (Bch), size: 1057km2, publication source: OVC Gently undulating sandy country in the central-western part of the Ord-Victoria survey area. Location map showing coverage of Buchanan land system defined by black region.