The transects were modified for a better representation of height and distance.
Starting from a 1:50,000 scale they were modified to a 1:37,500 one for the distances and to a 1:2,500 one for the heights.
Figure 49 - Land unit map with transects
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LAND SYSTEM |
Plateau of Ben Slimane |
Eastern scarp of plateau |
Plateau of Ben Slimane |
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Landform |
Undulating planation surface |
Dissected sloping area |
Undulating planation surface |
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Geomorphological processes |
Occasional erosional processes |
Erosion partially stopped by abundant vegetation cover |
Occasional erosional processes |
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Litology |
Brown silt with pisolithes above sandstone, limestone and schist |
Brown silt with pisolithes above sandstone, limestone and schist |
Sandstone and quartzite |
Limestone with interbedded of clay |
Sandstone, limestone and schist |
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|
Land cover / land use |
Open forest with a second layer of |
Very open forest with a second layer of shrubs |
Afforestation |
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shrubs |
shrubs - hunting reserve |
low shrubs - hunting reserve |
low shrubs |
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Land unit |
9 |
11 |
12 |
10 |
27 |
13 |
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Relevé number |
215, 106, 410, 411, 305, 319, 114 |
409 |
309, 312 |
115, 311, 412 |
116, 315, 320, 416, 417 |
312 |
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Geological legend |
Geological Cross-section |
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A1b - Gray silts of oueds and lower fluvial terraces (Holocene)
q1-6lb - Brown silts with pisolithes (Pleistocene)
pM - Calcarenites (Pliocene)
hv - Sandstones, limestones and schists (Carboniferous)
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Soil |
Plinthosol |
Luvisol-Cambisol-Kastanozem-Leptosol |
Plinthosol |
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Soil profile |
Ap Ap-Bvco
Bvco C-Bvco |
Ap Bt
C |
Ap Ap-Bvco Bvco C-Bvco |
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Figure 50 - Transect A-A’
|
LAND SYSTEM |
Western scarp of plateau |
Plateau |
Western scarp |
Plateau of Ben Slimane |
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|
LANDFORM |
Alluvial valley bottom |
Accumulation slopes |
Flat planation surface |
Accumulation slopes |
Flat planation surface |
Undulating planation surface |
Acc. foot slope |
High residual crest |
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Geomorphological processes |
Low erosional processes |
Local erosion processes |
Border erosion |
Local erosion processes |
Border erosion |
Occasional erosion |
Diffuse erosion |
Chemical and physical degradation |
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|
Lithology |
Gray silt of oued and lower fluvial terraces |
Doleritic basalts above the red siltstone |
Black soils (tirs) above calcarenite |
Doleritic basalts above the red siltston |
Black soils (tirs) above calcarenite |
Sandstone and quartzite |
Gray silt and quartzite |
Quartzite |
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LAND COVER / LAND USE |
Rainfed agriculture |
rainfed fallow agriculture |
Rocks and sparse low shrubs |
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LAND UNIT |
22 |
19 |
1 |
19 |
1 |
5 |
16 |
15 |
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Relevé number |
406 |
402, 403, 205 |
104, 111 |
402, 403, 205 |
104, 111 |
310, 117, 301, 304, 317, 418, 216, 222, 313 |
103 |
316 |
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Geological Legend |
Geological cross-section |
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D - Slope deposits (Holocene)
A1b – Gray silts of oueds and lower fluvial terraces (Holocene)
A2 - Black soils, Tirs (Holocene)
pM - Calcarenites (Pliocene)
|
t1 - Lower red siltstones (Trias)
r - Basal conglomerates, often ferruginous (Permian)
ds-h - quartzites (Carboniferous-Devonian)
di2 - silt and claystones (Devonian)
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SOIL |
kastanozem |
Vertisol-Kastanozem |
Vertisol |
Vertisol-Kastanozem |
Vertisol |
Plinthosol- kastanozem- Vertisol - Cambisol |
Cambisol |
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|
SOIL PROFILE |
KASTANOZEM Apk Bk Ck |
VERTISOL Ap Bss1 Bss2 Ck |
PLINTHOSOL A A-Bvco Bvco C-Bvco |
CAMBISOL Ap Bw |
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Figure 51 - Transect B-B’
