نتایج جستجو برای: foundation uplift
تعداد نتایج: 95628 فیلتر نتایج به سال:
The surface uplift of mountain belts is generally assumed to reflect progressive shortening and crustal thickening, leading to their gradual rise. Recent studies of the Andes indicate that their elevation remained relatively stable for long periods (tens of millions of years), separated by rapid (1 to 4 million years) changes of 1.5 kilometers or more. Periodic punctuated surface uplift of moun...
12 The impact of the Tibetan Plateau uplift on the Asian monsoons and inland arid climates is an 13 important but also controversial question in studies of paleoenvironmental change during the 14 Cenozoic. In order to achieve a good understanding of the background for the formation of the 15 Asian monsoons and arid environments, it is necessary to know the characteristics of the 16 distribution...
I n their Comment on our study (1), Zeitler et al. (2) imply that we interpreted our findings to question the possible existence of feedbacks between surface and tectonic processes, which is not the case. We therefore appreciate the opportunity to clarify potentialmisunderstandings. Zeitler et al. (2) suggest that the oldest sediments at the base of the valley fill could be 3 to 4 million years...
[1] Numerical landscape evolution models driven by uniform vertical uplift often develop a static drainage network and a precise balance between uplift and erosion. Small-scale physical models of uplifting drainage basins, however, continually reorganize by ridge migration and do not reach an ideal steady state. Here I show that the presence or absence of persistent drainage migration in a bedr...
The Amazonian rainforest is arguably the most species-rich terrestrial ecosystem in the world, yet the timing of the origin and evolutionary causes of this diversity are a matter of debate. We review the geologic and phylogenetic evidence from Amazonia and compare it with uplift records from the Andes. This uplift and its effect on regional climate fundamentally changed the Amazonian landscape ...
The three-dimensional finite difference method was used in this study to analyze the deformation and stresses of a passive pile under surcharge load extensively deep soft soil. A numerical model proposed verified by field test. horizontal displacements agreed well with results. This investigated pile-foundation soil interaction, transfer mechanism, excess pore water pressure (EPWP), resistance ...
Feed accounts for 60 to 70% of broiler production costs . Thus, improvement in feed efficiency is needed. Ileal digestibility (ID) and total-tract amino acid (AA) utilization are the parameter used to evaluate feed ingredients . However, ID of AA can be affected, for example, by gut inflammation as a result of a coccidial vaccine challenge. Adedokun et al. (2014) showed significantly high ileal...
Introduction: The Kentland impact structure located in northwestern Indiana (N 40° 45’ W 87° 24’) represents the remains of an ~13km diameter complex crater. Ordovician-Devonian strata have been uplifted ~600 m to the surface following impact and subsequently exposed by local quarrying operations. Large megablocks of carbonates, sandstones, and shales have been uplifted along thrust faults to c...
Evaluation of the sliding stability concrete dams requires use numerical tools not only able to simulate coupled hydromechanical behavior but also adequately represent foundation discontinuities and specific features dam foundations. The formulation a three-dimensional (3D) small displacement finite element model based on interface elements is presented. In this model, hydraulic simulated assum...
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