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Basalt columns, Real del Monte mine, MexicoEngraving of a sketch by Alexander Humboldt, 1810 Date: 1810
Sopwith Model XII: Denudation of mineral veinsThis model shows the influence of surface denudation and faulting on inclined strata, with increased complexity to the situation in Model VII
Sopwith Model VII: Surface denudation of veinsThis model shows the influence of surface denudation and faulting on otherwise flat, horizontal strata. The discontinuity between the beds as viewed at the surface can be seen
Sopwith Models: denudation & faultingModels showing the effect of denudation and faulting on how rock strata appear at the surface. Thomas Sopwith (1803 - 1879)
Sopwith Model VII: Denudation of mineral veinsThis model shows the influence of surface denudation and faulting on otherwise flat, horizontal strata. The discontinuity between the beds as viewed at the surface can be seen
Sopwith Model XII: Mineral vein denudationThis model shows the influence of surface denudation and faulting on inclined strata, with increased complexity to the situation in Model VII
Sopwith Model VIII: Overcutting of strataThis model shows overcut strata: when the layers of rock are inclined at a gentler angle than the eroded slope, the resulting vee pattern points uphill
Sopwith Model X: Denuded basset of strataThis model shows undercut strata: when the layers of rock are inclined at a steeper angle than the eroded slope, the resulting vee pattern points downhill