Controls on fan development — evidence from fan morphometry and sedimentology; Sierra Nevada, SE Spain
نویسندگان
چکیده
منابع مشابه
Controls on fan development - evidence from fan morphometry and sedimentology; Sierra Nevada, SE Spain
We have studied the morphology and the morphometric relations between alluvial fans and drainage basins in a bajada system including more than 20 coalescent fans developed since the Late Pleistocene as a result of the recent uplift of the Sierra Nevada (Betic Cordillera, Spain). Three allocycles of tectonic origin were recognised across which there is a clear evolution from debris flow to sheet...
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Pleistocene alluvial fan surfaces of the Campo de Cartagena-Mar Menor Basin (Murcia, SE Spain) are capped by thick mature calcretes. Calcrete profiles consist mainly of six different horizons: prismatic, chalky, nodular, massive, laminar and coated-gravels. Petrographic study of the calcretes has shown the occurrence of features such as alveolar septal structures, calcified filaments, coated gr...
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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...
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The Sinfonevada database is a forest inventory that contains information on the forest ecosystem in the Sierra Nevada mountains (SE Spain). The Sinfonevada dataset contains more than 7,500 occurrence records belonging to 270 taxa (24 of these threatened) from floristic inventories of the Sinfonevada Forest inventory. Expert field workers collected the information. The whole dataset underwent a ...
متن کاملInterference and ACT-R: New evidence from the fan effect
We present data demonstrating that interference plays a role in the fan effect. We also show that this cannot be accounted for using ACT-R. An ACT-R model is fit to the data and we discuss options for altering the model to account for the data.
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ژورنال
عنوان ژورنال: Geomorphology
سال: 1997
ISSN: 0169-555X
DOI: 10.1016/s0169-555x(97)00035-4