RUSSIAN JOURNAL OF EARTH SCIENCES, VOL. 21, ES1007, doi:10.2205/2020ES000757, 2021

Table 2. Structural geological features of the Richãt Structure according to different authors. Orientations are given as strike (in degrees from north eastwards) and dip (in degrees from the horizontal)
No. Type of Observation in literature Author(s)
feature
R_S1 shapes elliptical shape stretched in NE–SW (axis ratio 0.87–0.88), diameter of 40–50 km [Matton, 2008], [Matton et al., 2005], [Matton and Jébrak, 2014]
R_D1 dykes concentric dykes with reliefs of 20–30 m, dipping outwards with 10–20° (up to 35° in the center) [Matton, 2008], [Matton et al., 2005], [Matton and Jébrak, 2014], [Woolley, 2001]
R_D2 dykes 2 gabbro dykes at 3 km (20 m thick) and 7–8 km (50 m thick) from the center [Deynoux [ampersand] Trompette, 1971], [Matton, 2008], [Matton et al., 2005], [Matton and Jébrak 2014], [Poupeau et al. 1996]
R_D3 dykes 32 carbonatite plane dykes (including sills), strikes of 15–30°, lengths of up to 300 m (1–4 m thick) [Matton, 2008], [Matton et al., 2005], [Matton and Jébrak, 2014], [Netto et al., 1992], [Poupeau et al., 1996]
R_F1 faults fault system I, strikes of 10–20° (chronologically older) [Netto et al., 1992], [Poupeau et al., 1996]
R_F2 faults fault system II, strikes of 70–90° (chronologically younger) [Netto et al., 1992], [Poupeau et al., 1996]
R_f1 fractures brittle fracture system I parallel to fault system I (R_F1), dextral, some vertical offset [Matton, 2008], [Matton et al., 2005]
R_f2 fractures brittle fracture system II parallel to fault system II (R_F2), sinistral [Matton, 2008], [Matton et al., 2005]
R_f3 fractures concentric fracture system in the center [Deynoux [ampersand] Trompette, 1971], [Matton, 2008], [Matton and Jébrak, 2014]
R_I1 intersections fault system II (R_F2) intersecting fault system I (R_F1), stress regime possibly responsible for elliptical shape (R_S1) [Netto et al., 1992], [Poupeau et al., 1996]
R_I2 intersections fault system I (R_F1) intersecting gabbro dykes (R_D2) in the NE [Matton, 2008], [Matton et al., 2005]
R_I3 intersections carbonatite dykes (R_D3) intersecting gabbro dykes (R_D2) in the SW [Matton, 2008], [Matton et al., 2005]
R_I4 intersections brittle fracture system II (R_f2) intersecting cuestas (R_V2) in the W [Matton, 2008], [Matton et al., 2005]
R_V1 volcanism laccolithic uplift forming a dome structure (anticline) [Richard-Molard, 1949]
R_V2 volcanism multiple cuestas (after crater break-ins) [Monod, 1965]
R_V3 volcanism 2 maar systems, eruptive rock dipping towards the center with 15–27°, in the NE and the SW (Sabkha filling the SW crater) [Matton, 2008], [Matton and Jébrak, 2014]
R_B1 bedding mega-breccia in the center, diameter of 3 km (up to 40 m tick) [Matton et al., 2005]

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Citation: Faber R., G. Domej (2021), 3D Computer-Assisted Geological Mapping: Testing WinGeol's FaultTrace for semi-automatic structural geological assessment, Russ. J. Earth Sci., 21, ES1007, doi:10.2205/2020ES000757.
 

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