Two Tectonic Geomorphology Studies on the Landscape and Drainage Network of Chain and Piedmont Areas of the Abruzzi Region (Central Apennines, Italy)

Miccadei, Enrico; Piacentini, Tommaso

doi:10.5772/18969

Cited by 1 publication

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“…7A); the anomalously enlarged shape of the midstretch of the Negro River valley and its abrupt, nearly orthogonal downstream inflection from ENE to SE; and the lateral displacements of alluvial deposits of the Negro River terraces and also of their tributaries, the latter configuring successions of en échelon blocks, which we relate to faults. These features are similar to morphological anomalies commonly used to infer tectonic forcing in many other fluvial landforms on Earth (e.g., Miccadei et al, 2004;Jordan et al, 2005;D'Alessandro et al, 2008;Della Seta et al, 2008 and references therein;Enrico and Tommaso, 2011;Jelínek et al, 2013;Sedrette et al, 2016).…”

Section: Tectonic Genesis Of the Morphostructural Elements And Deformation Stylesupporting

confidence: 71%

Late Pleistocene–Holocene stress in the South American intraplate evidenced by tectonic instability in central Amazonia

et al. 2021

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Documenting neotectonic instabilities and determining the style and time of deformation in the vast and difficult to access central Amazonia region is challenging. We focus on these issues by investigating a large area of the Negro River drainage basin, applying morphostructural analysis based on synthetic aperture radar data. The digital elevation models of the C-band Shuttle Radar Topography Mission and the L-band Protection System of Amazonia were used as the database. We also used subsurface magnetic information from the Earth Magnetic Anomaly Grid global model to validate the morphostructures. The results revealed NW-oriented morphostructural lineaments bounding multiple depositional valley fills. These were extensively fragmented to form regularly distributed en échelon rectangular blocks commonly offset horizontally by several kilometers. Strike-slip faults and oblique, either normal or reverse, faults are present. These structures were reactivated along the main NE- and SW-oriented regional structural trends due to N-S-oriented horizontal compression and E-W-oriented horizontal extension in the late Pleistocene and Holocene. The extensive neotectonic faulting results from the interplay of plate motion and Andean uplifting since the late Pleistocene, combined with local stresses.

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Section: Tectonic Genesis Of the Morphostructural Elements And Deformation Stylesupporting

confidence: 71%

Late Pleistocene–Holocene stress in the South American intraplate evidenced by tectonic instability in central Amazonia

et al. 2021

View full text Add to dashboard Cite

show abstract

Two Tectonic Geomorphology Studies on the Landscape and Drainage Network of Chain and Piedmont Areas of the Abruzzi Region (Central Apennines, Italy)

Cited by 1 publication

References 46 publications

Late Pleistocene–Holocene stress in the South American intraplate evidenced by tectonic instability in central Amazonia

Late Pleistocene–Holocene stress in the South American intraplate evidenced by tectonic instability in central Amazonia

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