نتایج جستجو برای: alluvial fans

تعداد نتایج: 7388  

Journal: :Geology 2023

Abstract Fluvial fans are large, low-gradient depositional systems that occur in sedimentary basins worldwide. can represent much of the geologic record foreland basins, create hazards, and paleoclimate tectonic signals. However, we lack an understanding how fluvial grow into variety shapes observed around world. We explored this aspect using a cellular model basin landscape evolution with rule...

Journal: :تحقیقات جغرافیایی 0
مریم عسگری گروه جغرافیای طبیعی- دانشگاه تبریز معصومه رجبی گروه جغرافیای طبیعی- دانشگاه تبریز فریبا کرمی

abstract: the aim of this study is analysis of drainage basins neotectonic in the north slope of bozqoosh mountains by geomorphological methods. to attain this aim, it used of field observation, areal photographs and five geomorphic indexes in 20 basins of the north slope of bozqoosh mountains. indexes were calculated by topography maps (1: 50000), geological maps (1: 100000) and areal photogr...

اشرف امیری نژاد, علی , باقر نژاد, مجید ,

The calcification of soils and the effects of topography on this process were studied in semi-arid regions of Kermanshah. From a toposequence, based on the previous soil surveys of the region, five profiles were selected, and field studies and laboratory analyses were carried out on soils. Alluvial - colluvial fans, piedmont alluvial plains, and old plateaux were three main physiographies on th...

Investigation of desertification trend needs an understanding phenomena creating changes singly or action and reaction together in the manner that these changes end up in land degradation and desertification. In the investigation of pedological criterion affecting on land degradation in alluvial fans, first, maps of slope classes, land use and geology were created, then a map of units was found...

Journal: :Geology 2021

Abstract On Mars, basins formed by tectonic processes are rare and mostly have unconstrained subsidence histories. One method for understanding this record of is through associated alluvial fans, which sourced from uplifted areas accumulate in downthrown basins. The source, morphology, superposition fan deposits can be used to reconstruct fault kinematics, the relative timing accommodation spac...

1999
B. Jolliff A. Wang K. Kuebler L. Haskin

Introduction. FIDO is the prototype rover for the Mars 2003 mission, complete with an Athena-like science payload [1]. FIDO will be deployed in April 1999 for a series of tests at Silver Lake, CA [2]. In preparation for these tests, we have examined a suite of rocks collected at the site to anticipate the problems expected in field analyses on available rock surfaces as opposed to surfaces that...

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