نتایج جستجو برای: fluvial sedimentation

تعداد نتایج: 22091  

Journal: :Geophysical Research Letters 2004

2012
Alexandra Lefort Devon M. Burr Ross A. Beyer Alan D. Howard

[1] The Aeolis and Zephyria Plana contain the western-most portion of the Medusae Fossae Formation (MFF), an enigmatic and extensive light-toned deposit located in the Martian equatorial region and dated from the Hesperian to Amazonian epochs. This area hosts a large population of sinuous ridges (SRs), interpreted as inverted fluvial features, formed by precipitation, indurated by chemical ceme...

2017

The migration architecture of the rivers has a significant influence on a wide range of disciplines. For example, the Geomorphology, the hydraulic, the climate, hydrologic and topographic characteristics and so on. Previous studies relating to the issue of fluvial migration include the literature of river channel patterns [1,2], deposition transport and grain size sorting [36], bend meandering ...

Mohammad Reza Borna Mohammad Reza Pirestani,

Pre-sedimentation basins are among the most important elements of the conventional water treatment process. In pre-sedimentation basins, due to different velocity gradients, secondary and rotational flows are formed that will create short paths and increase dead and still flow zones as well as changes in the flow mixing. This will prevent laminar flow conditions for sedimentation and will reduc...

2005
MICHAEL M. ADAMS JANOK P. BHATTACHARYA

Nonmarine sequence stratigraphic models are based largely on studies of fluvial units in the Cretaceous Western Interior of North America, including the Blackhawk and Castlegate formations of central Utah. These models suggest that fluvial units should show a transition from mudstoneprone, isolated meander-belt deposits of the transgressive and highstand systems tract into amalgamated braided-s...

Journal: : 2023

This article reviews information from published papers and studies by the authors about placer diamond deposits. Original data were obtained in result of field laboratory-analytical work carried out various countries Africa South America. The main types deposits – fluvial, fluvioglacial, eolian, man-made have been considered characterized. attention is given to fluvial continental placers, whic...

Journal: :Geological Society, London, Memoirs 2022

Abstract The period 1965–2000 saw a sustained increase in research and publications on fluvial processes landforms. trend towards generalization and/or mechanistic understanding, rather than site-specific history, continued. Research was multidisciplinary, with important contributions from hydraulic engineers, geologists physical geographers experimental theoretical approaches as well geomorpho...

2006
PATRICK L. BARNARD LEWIS A. OWEN ROBERT C. FINKEL

Large fans and terraces are frequent in the Khumbu Himal within the high Himalayan valleys south of Mt. Everest. These features are composed of massive matrixand clast-supported diamicts that were formed from both hyperconcentrated flows and coarse-grained debris flows. Cosmogenic radionuclide (CRN) exposure ages for boulders on fans and terraces indicate that periods of fan and terrace formati...

2018

The migration architecture of the rivers has a significant influence on a wide range of disciplines. For example, the Geomorphology, the hydraulic, the climate, hydrologic and topographic characteristics and so on. Previous studies relating to the issue of fluvial migration include the literature of river channel patterns [1,2], deposition transport and grain size sorting [36], bend meandering ...

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