in order to determine the source and critical areas of wind erosion, sistan plain, irifr-e.a method was applied. according to geomorphological investigations, the studied area consists of the following two main units namely: pediment with 1 type and 8 geomorphological facies, and playa with 2 types of flatland and desert type that includes 9 geomorphological facies. on the basis of sediment, th...

The potential use of a nonlinear deterministic framework for understanding the dynamic nature of solute transport processes in subsurface formations is investigated. Time series of solute particle transport in a heterogeneous aquifer medium, simulated using an integrated probability/Markov chain (TP/MC) model, groundwater flow model, and particle transport model, are studied. The correlation di...

Petrographic and geochemical analyses of travertine-depositing hot springs at Angel Terrace, Mammoth Hot Springs, Yellowstone National Park, have been used to define five depositional facies along the spring drainage system. Spring waters are expelled in the vent facies at 71 to 73 degrees C and precipitate mounded travertine composed of aragonite needle botryoids. The apron and channel facies ...

Bottom currents are key processes that contribute to the shaping of submarine slopes, with redistribution sediments in contourite systems. Despite numerous recent studies on systems, complexity and diversity these sedimentary systems still not fully understood often underestimated. Their understanding requires comprehensive works integrating all scales from seismic architecture microfacies. Thi...

Continental carbonates are characterized by multi-scale heterogeneous porous networks, making the geological interpretation of seismic imaging difficult. We investigate two sedimentary sections exhibiting a similar facies succession, combining characterizations and acoustic measurements. Based on outcrop investigation petrographic description, we define nine displaying contrasted early diagenet...

Sequence stratigraphy is the study of sediments and sedimentary rocks in terms of repetitively arranged facies and associated stratal geometry (Vail 1987; Van Wagoner et al 1988, 1990; Christie-Blick 1991). It is a technique that can be traced back to the work of Sloss et al (1949), Sloss (1950, 1963), and Wheeler (1958) on interregional unconformities of the North American craton, but it becam...

Based on seismic reflections and detrital composition analysis as well as cluster analysis, a multi-provenance depositional model of the Upper Fourth Member of the Shahejie Formation was proposed considering the paleo-gully sedimentation controlled by well Y920 in the east of the northern abrupt slope belt in Dongying depression. The result shows that the paleogeomorphology of the Y920 gully de...