a RL (m): FOOTWALL 10.00 5.65 1.30 -3.04 -7.39 -11.74 -16.09 -20.43 -24.78 -29.13 Manthift -33.48 -40.00 N/A 0 2000 4000

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A Rl M Footwall 10 00 5 65 1 30 3 04 7 39 11 74 16 09 20 43 24 78 29 13 Manthift 33 48 40 00 N A 0 2000 4000 1 (377.57 KiB) Viewed 87 times

a RL (m): FOOTWALL 10.00 5.65 1.30 -3.04 -7.39 -11.74 -16.09 -20.43 -24.78 -29.13 Manthift -33.48 -40.00 N/A 0 2000 4000 6000 8000 Distance (m) (azimuth 030°) represents direction of the long axes of the trough-like basins in the footwall of the mineralised dunes coinciding with the strike of the dunal complexes. Direction N120 (azimuth 120°) is the direction oriented across the strike of the dunes 7242000 FOOTWALL 7241000 7240000 €7239000 > 7238000 7237000 7236000 7235000 702500 705000 707500 710000 X (m) Fig. 18.9 Footwall contact of the Fort Dauphin Ti-rich sands deposit, Madagascar: (a) map of the footwall con- tact; (b) experimental directional variograms of the foot- wall elevation (RLm) calculated along two directions, N30 and N120, exhibiting the geometric anisotropy. N30 Variogram: FOOTWAL (RLM) 100 75 50 25 0 N120 N30