Introduction and General Characteristics: The fan-shaped deposits of the Tharsis Montes generally share three major facies: 1) Ridged facies, 2) Knobby facies, and 3) Smooth facies. The ridged facies consists of narrow, parallel, concentric ridges interspersed in places with small hills [1]. The hummocky or knobby facies consists of dense concentrations of small sub-km scale circular to irregul...

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...

the objective of this study was to explore the microbial community diversities and the relationships between microbial community compositions and hydrochemical factors in nitrate contaminated groundwater of hun river alluvial plain. the method of polymerase chain reaction (pcr)-denaturing, gradient gel electrophoresis (dgge) gene fingerprints combined with canonical correspondence analysis（cca）...

Great interest has recently been focused on dating and interpreting alluvial-fan surfaces. As a complement to the radiometric methods often used for surface-exposure dating, this paper illustrates a rapid method for correlating and dating fan surfaces using the cross-sectional shape of gullies incised into fan surfaces. The method applies a linear hillslope-diffusion model to invert for the dif...

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...

Although Amazon Fan is one of the largest deep-sea fans in the world, it’s architectural features are typical of "mud-rich" fans developed on passive margins, regardless of their size (c.f. Bouma et al., 1985). Because Amazon Fan is the only modern fan whose architectural elements have been systematically drilled and continuously cored, it is one of the most important modern analogs for underst...

Abstract Visiting three gravel pits and natural outcrops across the Mureş/Maros Alluvial Fan, 58 samples were collected from subfossil driftwood recovered coarse-grained fluvial sediment layers, while no wood was found at additional pits. Dendrochronological radiocarbon analysis of these relict can support temporal extension regional dendrochronological reference datasets their dating provide a...