Basement inherited structures represent a significant factor affecting thrust propagation dynamics during the growth of fold-and-thrust belts. In this study inspirited from seismic data analysis of Gaoquan anticline in the Northern Tianshan foreland basin, we devised an experimental approach to investigate...
Syncline-Parallel, Thin-Skinned Detachment in Basement-Involved Foreland Structures: A New Mechanism for 3D Folding in the RockiesERSLEV, Eric A
摘要: Experimental models with wrench and compressional tectonics are presented.asement restraining bends are reactivated or not during subsequent compression.Restraining bend reactivation affects the mode of fold and thrust propagation.Erosion during restraining bend reactivation affects sequence of thrusting....
The reach of small rhizoconcretions and pedotubules into larger diameter and deeper columnar structures suggests a low-relief and stable landscape, and recurrent development of savannah-like vegetation. Regolith profiles are also present in this section, affecting crystalline basement or Late Paleozoic ...
Reactivated structures in the Laramide province include Precambrian sutures, faults, and igneous and metamorphic fabrics, as well as late Paleozoic basement-involved faults related to development of the Ancestral Rocky Mountains (e.g., Brown, 1988; Bryant and Nichols, 1988; Nelson, 1993; Marshak ...
studyshowthat:(1)ThetectoniceventsattheendofTertiaryformedthebasementinvolvedthrustsandreverse structuresinUcayalibasin,whiletheeffectsonMaranonbasinarelessintensive.(2)DuringtheTriassicperi od,mostPaleozoicformationsinMaranonandUcayalibasinsareupliftedanderoded,whileinMadredeDios basin,Paleozoicformationsareunaffecte...
Combined isotopic and geochemical datasets show that the deformational history of the SEAFB is likely related to the reactivation of inherited deep-seated structures in the upper Cenozoic stratigraphic sequence due to the far-field stress propagation from the Makran belt into the Arabian peninsula, ...
allowing the structures to be termed "thin-skinned", In the more internal parts of the Appala- chians and in the Scottish and Norwegian Caledonides, older crystalline basement rocks were involved in the thrust tectonics, but these were emplaced as simple thrust slabs, whose basal thrusts are ge...
If still preserved after depth migration, this infra-salt doming would rather account for the reactivation of basement structures or inversion of a Paleozoic basin. Unfortunately, the resolution of potential data such as gravimetry is not sufficient to discriminate among the various hypotheses, due to...
The early movement occurred in the end of Oligocene and generatedbasement-involvedstructures. Tokar地区位于苏丹红海南部水域,构造上属红海盆地中段西侧,先后经历了渐新世末和中新世末两次大的构造运动、裂陷—稳定—裂陷3个构造演化阶段,在盐上和盐下两个构造层形成了一系列构造圈闭:渐新世末主要形成基底卷入型构...