منابع مشابه
Late alluvial fan formation in southern Margaritifer Terra, Mars
[1] Crater statistics indicate alluvial fans, crater floor, and fill/mantling deposits within impact craters >50 km in diameter in southern Margaritifer Terra were likely emplaced during multiple epochs: fans formed during the Amazonian or near the Amazonian‐Hesperian boundary, crater floor deposits are likely Hesperian in age, and most fill/mantling deposits are Amazonian. The regional distrib...
متن کاملEnvironmental assessment of Al-Hammar Marsh, Southern Iraq
AIM (a) To determine the spatial distributions and levels of major and minor elements, as well as heavy metals, in water, sediment, and biota (plant and fish) in Al-Hammar Marsh, southern Iraq, and ultimately to supply more comprehensive information for policy-makers to manage the contaminants input into the marsh so that their concentrations do not reach toxic levels. (b) to characterize the s...
متن کاملControls on alluvial fan long - profi les
Water and debris fl ows exiting confi ned valleys have a tendency to deposit sediment on steep fans. On alluvial fans where water transport of gravel predominates, channel slopes tend to decrease downfan from ~0.10–0.04 to ~0.01 across wide ranges of climate and tectonism. Some have argued that this pattern refl ects grain-size fi ning downfan such that higher threshold slopes are required just...
متن کاملLong-term slip rate of the southern San Andreas Fault, from Be-Al surface exposure dating of an offset alluvial fan
(1) IGPP-LLNL, L202, 7000 East Avenue, CA94550 Livermore, USA [email protected] (2) EOST-IPGS, 5 Rue R. Descartes, 67000 Strasbourg, France [email protected] (3) Division of Geological and Planetary Sciences 100-23, Caltech, Pasadena, CA 91125, USA [email protected] (4) Laboratoire de Tectonique, IPG Paris, 4 place Jussieu, 75252 Paris Cedex 05, 75252, France [email protected] t...
متن کاملAlluvial fans: geomorphology, sedimentology, dynamics - introduction. A review of alluvial-fan research
This volume presents a series of papers on the geomorphology, sedimentology and dynamics of alluvial fans, selected from those presented at the 'Alluvial Fans' Conference held in Sorbas, SE Spain in June 2003. The conference was sponsored primarily by the British Geomorphological Research Group and the British Sedimentological Research Group, both organizations affiliated to the Geological Soci...
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ژورنال
عنوان ژورنال: Engineering
سال: 2014
ISSN: 1947-3931,1947-394X
DOI: 10.4236/eng.2014.611069