نتایج جستجو برای: uplift mechanism

تعداد نتایج: 569167  

Journal: :Frontiers in Earth Science 2021

We characterize the topographic evolution of Pacific Northwest, United States, during Cenozoic. New paleosol carbonate stable isotope (δ 18 O) results from central Oregon are presented, along with published proxy data, including fossil teeth, smectites, and concretions. interpret a polygenetic history Cascade Mountain uplift along-strike, characterized by: 1) Steady Washington Cascades through ...

Journal: :Geophysical Research Letters 2022

Gongga Shan (GGS) is the highest mountain on eastern margin of Tibetan Plateau. However, mechanism for uplift still unclear due to a lack detailed geophysical studies. Inversion an array magnetotelluric data at 120 sites produced 3D resistivity model that revealed GGS massif characterized by high upper crust underlain westward dipping resistor middle crustal depths interpreted as underthrust Ya...

2013
Chao LI Paul BARES Lyesse LALOUI

This study focuses on a specific problem related to the surface uplift induced by the injection of CO2 at depth. The adopted methodology includes the development of a mathematical model that incorporates the deformable behaviour of storage media and the flow of two immiscible fluids (CO2 and water) within the aquifers while the surface rock or caprock layer is modelled as a thin plate. Governin...

2010
Fritz Schlunegger Kevin P. Norton Gerold Zeilinger

Orographic precipitation has a large impact on channel morphology and rock uplift via a positive feedback to erosion. We show that in the Eastern Cordillera of Bolivia, channel concavities reach their highest values where annual precipitation increases in the downstream direction, exceeding 3000 mm. The steepest channels are upstream of this zone of high concavity, where precipitation rates are...

Journal: :Science 2006
Pierre Sepulchre Gilles Ramstein Frédéric Fluteau Mathieu Schuster Jean-Jacques Tiercelin Michel Brunet

The history of Eastern African hominids has been linked to a progressive increase of open grassland during the past 8 million years. This trend was explained by global climatic processes, which do not account for the massive uplift of eastern African topography that occurred during this period. Atmosphere and biosphere simulations quantify the role played by these tectonic events. The reduced t...

2007
SEAN C. SOLOMON

The Tharsis province of Mars is a broad region characterized by anomalously elevated topography, a positive free-air gravity anomaly, and extensive volcanic and tectonic activity. The evolution of this region has spanned up to 4 b.y. of Martian history. The traditional explanation of the Tharsis province is that uplift of the lithosphere caused by a thermal, chemical, or dynamical anomaly in th...

2002
Kelin X. Whipple Gregory E. Tucker

[1] Developing a quantitative understanding of the factors that control the rate of river incision into bedrock is critical to studies of landscape evolution and the linkages between climate, erosion, and tectonics. Current models of long-term river network incision differ significantly in their treatment of the role of sediment flux. We analyze the implications of various sediment-fluxdependen...

زراسوندی, علیرضا, مر, فرید , پورکاسب, هوشنگ,

The Khezr-Abad area is located in southwest of Yazd in central Iran at the intersection with the Central Iranian Volcano-Plutonic Belt (Urumieh-Dokhtar Belt). The Darreh-Zerreshk and Ali-Abad porphyry copper deposits are the most important deposits in this district. These deposits are associated with Oligocene-Miocene (18-28 Ma) granitoid intrusions which consisted mainly of quartzmonzonite, qu...

A. Mardookhpour, R. Sobhkhiz,

Ground cylindrical steel fluid storage tanks are widely used in different industries. Regarding the significance of these structures, it is important to establish their proper performance in earthquakes by evaluating their seismic performance. The present study examines the seismic behavior of an unanchored fluid storage system via ABAQUS after validation using an experimental model. Next, the ...

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