Hydrological change during the pleistoceneholocene. Google language tools gives fan the sort you wave to cool yourself down as a translation of abanico. Tectonic controls on the development of a semiarid. Pdf sedimentologia e hidrogeologia del abanico aluvial. The argentinian chaco region belongs to an extensive ecoregion called great chaco, characterized by ample plains of fluvial aggradation and linked to the formation of large alluvial fans. The suitability of a low temperature postir irsl signal. Vargas a marco nieto a hugo monsalve b luis montes a mireya valdes a b. The baiyang alluvial fan in nw china is a representative area for examining groundwater recharge from river infiltration and for mapping groundwater renewability, and it has been investigated using multiple isotopes and water chemistry. Grupo honda, tsh, ngh is a geological group of the upper and middle magdalena basins and the adjacent central and eastern ranges of the colombian andes. Media in category alluvial fans the following 64 files are in this category, out of 64 total.
The recharge and origin of groundwater and its residence time were studied using environmental isotopic measurements in samples from the heihe river basin, china. The different alluvial fan systems distinguished inc1ude the most important one. A model of fan and its dynamic evolution is proposed. Hydrogeophysical methods and hydrogeological models. Google searches for alluvial cone and for rain cone return nothing, so ive commented out the speculative translation. Discussions focus on preliminary systematic prospecting, drilling in difficult ground. The left side is the active part of the fan, and appears blue from water currently flowing in the many small streams. A coneshaped heap of alluvium deposited by a river. Geomorphological evolution of the tilcara alluvial fan.
Cenozoic geologic evolution of the lower colorado river basin, northern patagonia, argentina. Download pdf 218 kb abstract the topmost alluvial deposits that outcrop adjacent to central system igneous rocks are arranged in two\ud units with particular internal architecture. This was due variously to low quartz yields, a dim osl signal, feldspar contamination, andor osl saturation i. The group, in older literature also defined as formation, is in its presentday type section in the tatacoa desert in the department of huila subdivided into two main formations. The high resistivity lobes in l31 represent the paleochannels of sichez river, where coarse material was deposited and forms unconfined to semiconfined units, and are the major pathways for groundwater flow. In contrast, oldknow and hooke 2017 sought to apply osl dating to a complex alluvial and colluvial stratigraphy in the wilgerbosch catchment, sneeuberg, but met with limited success.
This is one of the nutrientpoorest soils, organic matter is almost zero, and it has a great drainage. The punta montalva fault is defined by a strong topographic wnw lineament along which stream channels are displaced left laterally 200 meters and miocene strata are steeply tilted to the south. Groundwater age has been used to map renewability of water resources within four groups. The book first offers information on the prospecting methods, sampling, and valuation. Alluvial fan, taklimakan desert, xinjiang province. From the previous data we conclude that these materials deposited in alluvial fans. The climate is semiarid to humid, with marked dry season and important seasonal water deficit. Mapping groundwater renewability using age data in the. The studied alluvial fan is located near tilcara village 2459 m a.
Location map of the gsg area and the sampled sites. Pages in category sedimentary basins of chile the following 10 pages are in this category, out of 10 total. On the deltafront of the alluvial fan and in the alluvial plain, in the downstream area, the characteristics of total dissolved solids values, 222 rn concentrations and. Pages in category sedimentary basins of argentina the following 16 pages are in this category, out of 16 total. Alluvial prospecting and mining second revised edition focuses on the emergence of improved mining techniques and methods used in the excavation of alluvial deposits.
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