A model for the evolution of weathered landsurfaces in Uganda is developed using available geotectonic, climatic, sedimentological and chronological data. The model demonstrates the pivotal role of tectonic uplift in inducing cycles of stripping
, and tectonic quiescence for cycles of deep weathering. Development of the Ugandan landscape is traced back to the Permian.
Geomorphic assessment of active tectonics in the Acambay graben, mexican volcanic belt
Spatial variations of Quaternary deformation and tectonic activity of faults along the Acambay graben are assessed using geomorphic and morphometric approaches in the study of the fault-generated mountain fronts and fluvial systems. Continuing
tectonic activity in the Acambay graben is confirmed by recent well documented seismic episodes. The results of this analysis can be applied for earthquake hazard reduction.
In this paper, three types of Liesegang blocks from sandstone beds of the Hojedk Formation are described. The factors involved in their formation, and their tectonic implication are discussed.
The evolutionary history of the Nal region using remote sensing data and sub-surface lithological correlation indicated that late Quaternary sedimentation in the Nal region was governed by changes in sea level and by tectonism in the region
of Cambay Graben. The geomorphic evidence for changes in sea level was found in the form of inland palaeo-deltas and old mud flats. Abrupt changes in lithological data in the vicinity of Nal region pointed to the role of tectonism. Contrary to the earlier
Testing the tectonic significance of some parameters of longitudinal river profiles : the case of the Ardenne (Belgium, NW Europe)
Ardenne ; Belgium ; Carrying capacity ; Cluster analysis ; Data base ; Discharge ; Hydrodynamics ; Longitudinal section ; Stream ; Tectonics ; Vertical movement
The longitudinal profiles of 24 rivers of 3rd to 5th order have been analyzed in order to recognize the regional tectonic differentiation pattern of the Ardenne, a Paleozoic massif of NW Europe. Data collected exclusively from 1/25,000 topographic
Afghanistan ; Asia ; Cenozoic ; Drainage network ; Earth surface processes ; Fluvial processes ; Himalaya ; Longitudinal section ; Plate tectonics ; Stream ; Tibet ; Vertical movement
This paper describes the southward-draining systems of Afghanistan, of Tibet and southeast Asia, and of the Himalaya and southern Tibet, and concentrates on base levels of erosion, recent river gradients and the response to tectonic, climatic
, and local changes. The drainage history of southern Asia can be reconstructed by restoring the gross movements of the plates and the tectonic displacement, uplift, and erosion of individual tectonic units. Most important changes in drainage took place
This paper demonstrates that a combined study, based on geomorphological, stratigraphical and tectonic analysis, allows precise understanding of the structure and evolution of an active fold. The aims of the study are to document : 1) the structures
that accommodate lateral propagation on an active fold; 2) the orientation of the principal stress-axis inferred from fault population analysis in the pretectonic Toukoshan Formation and syntectonic deposits; and 3) the tectonic geomorphology of the Pakuashan
Data base ; Earthquake ; Island ; Landslide ; Oceanic ridge ; Plate tectonics ; Rift ; Shoreline ; Submarine volcanism ; Tectonics ; Volcanism ; World
shorelines of the world's landmasses. The analysis also resolves the orientations of islands with respect to the tectonic fabric of their underlying oceanic basement.
Africa ; Arid area ; Climatic variation ; Drainage network ; Fluvial processes ; Palaeogeography ; Palaeogeomorphology ; Sediment budget ; Southern Africa ; Tectonics ; Vertical movement ; Zimbabwe
changes in drainage pattern, discharge and sediment yield and hat these can be related to a complex set of causative factors including the geological template, the Jurassic rifting of Gondwana, tectonic episodes and climate change.
Australia ; Concept ; Continental margin ; Drainage network ; Geomorphogenesis ; Methodology ; New South Wales ; Numerical model ; Plate tectonics ; Tasmania ; Weathering
The A. summarises briefly Griffith Taylor's reconstruction of the drainage history of SE Australia, and how it came to be incorporated into the early plate tectonic interpretations of the evolution of Tasman-margin landscapes. He then uses
correspond to changing discharge; 2) wide low passages with flat ceilings, developed by upward dissolution, which may indicate rising base level. Some cross-sections are deformed by Holocene tectonics.