Multiple planation surfaces in basement regions: Implications for the reconstruction of periods of denudation and uplift in southern Zimbabwe

Variations of Lateral Bedrock Erosion Rates Control Planation of Uplifting Folds in the Foreland of the Tian Shan, NW China

“…In turn, during times when river incision dominates, planation surfaces are incised, strath terraces form, and valleys narrow (Gilbert, ; Hancock & Anderson, ; Merritts et al, ; Pazzaglia, ). We note here that most studies of extensive strath terrace formation have been performed in landscapes with weakly consolidated lithologies (Allen et al, ; Brocard & van der Beek, ; Collins et al, ; Cook et al, ; Fuller et al, ; Hancock et al, ; Langston et al, ; Lavé & Avouac, ; Molnar et al, ; Montgomery, ; Schanz & Montgomery, ) and that the width of planation surfaces has been linked to the strength of bedrock (Allen et al, ; Brocard & van der Beek, ; Montgomery, ; Römer, ; Schanz & Montgomery, ). However, strath terraces also form in resistant lithologies, such as granites and quartzite (Burbank et al, ; Pratt‐Sitaula et al, ).…”

“…Caution is warranted when extending these results to different settings. Bedrock strength has a significant effect on the lateral erosion rates and the size of planation surfaces has been linked to bedrock lithology (Allen et al, ; Montgomery, ; Römer, ; Schanz & Montgomery, ). Whereas narrow strath terraces have been documented in more resistant lithologies, such as granites and quartzite (Burbank et al, ; Pratt‐Sitaula et al, ), most wide planation surfaces form in weak or weathered lithologies (Allen et al, ; Brocard & van der Beek, ; Collins et al, ; Cook et al, ; Fuller et al, ; Hancock et al, ; Langston et al, ; Lavé & Avouac, ; Molnar et al, ; Montgomery, ; Schanz & Montgomery, ).…”

DEM identification of macroscale stepped relief in arctic northern Sweden

“…Stepped erosion surfaces are major topographic elements in the shield landscapes of arctic Finland (Kaitanen, 1969), west Greenland (Bonow et al, 2006), and northern Canada (Ambrose, 1964;Bird, 1972). These glacially modified, low angle surfaces invite comparisons with the extensive erosion surfaces found on shields in tropical and extra-tropical areas, including Brazil (Peulvast and de Claudino Sales, 2004), southern Africa (Römer, 2009), and Australia (Twidale, 2003). The DEM analysis therefore has a very wide applicability for the characterisation of stepped relief.…”

“…Stepped relief has been described from areas with widely varying geology, structure, tectonic history, and climate. Stepped relief is found in lowland, upland, and mountain areas and from areas within and beyond the limits of Pleistocene glaciation (Rudberg, 1954;Wahrhaftig, 1965;Peulvast et al, 1996;Fjellanger and Etzelmüller, 2003;Bonow et al, 2003Bonow et al, , 2006Peulvast and de Claudino Sales, 2004;Lidmar-Bergström et al, 2007;Rowberry et al, 2007;Römer, 2009). …”

Condicionamento Morfoestrutural Do Inselberg Pedra Da Andorinha, Sertão Norte Do Ceará, Brasil

“…Nesse contexto, estudos relativos a condicionantes litoestruturais do intemperismo diferencial (MIGOŃ, 1997;SIMON-COIÇON et al, 1997;ERICSON et al, 2005;TWIDALE, 2007;DAUTEUIL et al, 2015), atributos morfométricos e de distribuição espacial (RÖMER, 2005(RÖMER, , 2007(RÖMER, , 2010EBERT et al, 2011;); e taxas de denudação/erosão (DECKER et al 2012;MATMON et al, 2013;MATMON et al, 2018) vêm sendo empregados para a compreensão evolutiva desses relevos.…”