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2015111 · Abstract. Alluvial terraces provide a record of aggradation and incision and are studied to understand river response to changes in climate, tectonic activity, sea level, and factors internal to the river system. Terraces form in all climatic regions and in a range of geomorphic settings; however, relatively few studies have been undertaken in ...
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2015111 · The preservation of alluvial terraces in a valley is driven by lateral channel adjustments, vertical incision, aggradation, and channel stability, processes that can be further understood through examining catchment force–resistance frameworks.
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2005112 · Results provide evidence that dominance of P. sylvestris on gravelly alluvial terraces is caused not only by tolerance of soil dryness and nutrient deficiency, as previously assumed, but also by a dynamic multilayered root system which allows adaptation to highly variable soil-moisture conditions.
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201771 · Terraces are formed by phases of cyclic erosion and deposition (cut and fill) of alluvial sediments in a setting that generates a staircase. The causes of alluvial plain incision often reflect mixtures of external processes such as climatic, tectonic, and eustatic fluctuations ( Leopold et al., 1964, Born and Ritter, 1970, Merritts et al., 1994, Bridgland …
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An alluvial river in a humid environment normally experiences overbank floods each year or two. Figure 15.19 illustrates the typical landforms of an alluvial river and its floodplain, including bluffs, ox-bow lakes, natural levees, and backswamps. Bluffs are cut when meanders excavate older terraces or preexisting materials.
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Miocene sediments (mainly alluvial fans) derived from the Cantabrian Mountain and León Mountain uplifts, and Quaternary deposits (principally regolith, fluvial terraces, moraines and fluvio-glacial fans) were exploited by the Roman miners, using hydraulic mining methods.
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2023421 · As in other settings, most efforts at dating begin with stratigraphic studies of landforms, sediments, and soils. Morphostratigraphy addresses the sequence of alluvial landforms – including terraces – and alluvial fans, as well as depositional landforms such as floodplains, natural levees, cutoff channels, and oxbow lakes (Wells 2001 ).
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2018125 · Abstract Mining poses serious and highly specific threats to biodiversity. However, mining can also be a means for financing alternative livelihood paths that, over the long-term, may prevent biodiversity loss. Complex and controversial issues associated with mining and biodiversity conservation are often simplified within a narrow frame oriented …
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A small pan plant and associated equipment was mobilized to site and the bulk sample program was successful in achieving this objective. Tango plans to recommence bulk sampling and trial alluvial diamond production as soon as practical with the implementation of an updated project development plan and strategy.
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2023222 · As announced to the ASX on 29 March 2016, initial trial mining of gravels from the E46 alluvial terraces produced eight special diamonds, including a 68 carat Type IIa D-colour gem (Table 3).
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