نتایج جستجو برای: uplift and magmatism
تعداد نتایج: 16828102 فیلتر نتایج به سال:
S U M M A R Y Extreme uplift rates and sea level changes in southern Alaska have been documented by Global Positioning System (GPS) surveys, tide gauge measurements and studies of raised shorelines. The movements detected in a network of 45 GPS survey points describe a broad pattern of rapid regional uplift. The majority of the study area is uplifting at a rate faster than 10 mm yr−1, with seve...
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 ...
[1] Large uplifts and tilts occurred on the Sumatran outer arc islands between 0.5 and 3.3 S during great historical earthquakes in 1797 and 1833, as judged from relative sea level changes recorded by annually banded coral heads. Coral data for these two earthquakes are most complete along a 160-km length of the Mentawai islands between 3.2 and 2 S. Uplift there was as great as 0.8 m in 1797 an...
Recent phylogenetic studies have revealed the major role played by the uplift of the Andes in the extraordinary diversification of the Neotropical flora. These studies, however, have typically considered the Andean uplift as a single, time-limited event fostering the evolution of highland elements. This contrasts with geological reconstructions indicating that the uplift occurred in discrete pe...
The subsidence history of forearc and back-arc basins reflects the relationship between subduction kinematics, mantle dynamics, magmatism, crustal tectonics, surface processes. distinct contributions these processes to topography variations active margins during initiation, oceanic subduction, collision are less understood. We ran 2D elasto-visco-plastic numerical models including hydration sho...
The lateral distribution of the magnetic layer beneath Tarim Craton and its environs was estimated from spectral analysis using newest high-resolution aeromagnetic dataset mainland China, which is enlarged by EMAG2. As a proxy, Curie point depth (CPD) provides comprehensive view crust-scale thermal regime, accounted for at magnetite becomes paramagnetic, correspondence CPD with tectonic regime ...
In their Comment, Zeitler et al. do not challenge our results or interpretation. Our study does not disprove coupling between tectonic uplift and erosion but suggests that this coupling cannot be the sole explanation of rapid uplift in the Himalayan syntaxes.
The Colorado River’s integration off the Colorado Plateau remains a classic mystery in geology, despite its pivotal role in the cutting of Grand Canyon and the region’s landscape evolution. The upper paleodrainage apparently reached the southern plateau in the Miocene, and recent work supports the longstanding idea that the river was superimposed over the Kaibab uplift by this time. Once off th...
This study measures the uplift rates of a flight of marine terraces along the Glenafric coastal region of the South Island of New Zealand, which will provide a context for how local fold growth in the North Canterbury fold and thrust belt (NCFTB) contributes to local uplift rates. Several methods were used to measure uplift rate of the marine terraces: 1) collecting shell samples for AAR dating...
Topography and bathymetry are principally supported by some combination of crustal sub-crustal density variations. However, dynamic topography is generated vertical deflection the Earth's surface as a result mantle convection. Isolating quantifying observable yields valuable information about processes. Here, we investigate global calculating residual depth anomalies throughout oceanic realm to...
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