Front, left to right: Mark Handy, Tuncay Taymaz, Jean
... so-called silent or slow earthquakes are becoming understood (Dragert et al. 2001), the details of what goes on at depth are still unresolved. Other evidence for transient deformation from continuous GPS networks includes intraplate extension in the northern Basin and Range Province (western U.S.A.) ...
... so-called silent or slow earthquakes are becoming understood (Dragert et al. 2001), the details of what goes on at depth are still unresolved. Other evidence for transient deformation from continuous GPS networks includes intraplate extension in the northern Basin and Range Province (western U.S.A.) ...
Subduction - Géosciences Montpellier
... allows nearly all oceanic lithosphere to be recycled into the mantle. By contrast, only the lower portion of the continental lithosphere (the lithospheric mantle) may, under certain conditions, be transported into the deep mantle. Since the continental crust resists subduction at depths beyond about ...
... allows nearly all oceanic lithosphere to be recycled into the mantle. By contrast, only the lower portion of the continental lithosphere (the lithospheric mantle) may, under certain conditions, be transported into the deep mantle. Since the continental crust resists subduction at depths beyond about ...
Three distinct types of hotspots in the Earth`s mantle
... Fig. 2. Time variations of four signi¢cant kinematic, geographic or dynamic indicators of hotspot motion (all on the same time scale in million years BP). All display a step-like (Heavyside) change in velocity at V40^50 Ma. Velocity patterns are shown as full red or black dashed lines, depending on ...
... Fig. 2. Time variations of four signi¢cant kinematic, geographic or dynamic indicators of hotspot motion (all on the same time scale in million years BP). All display a step-like (Heavyside) change in velocity at V40^50 Ma. Velocity patterns are shown as full red or black dashed lines, depending on ...
A model for the layered upper mantle
... the experimentally determined high melting temperatures of (Mg,Fe)SiO 3 perovskite (Zerr and Boehler, 1993) would prohibit convection in the lower mantle unless the melting temperatures are decreased by volatiles. Any estimate of the rheological properties of the Earth, for example from a postglacia ...
... the experimentally determined high melting temperatures of (Mg,Fe)SiO 3 perovskite (Zerr and Boehler, 1993) would prohibit convection in the lower mantle unless the melting temperatures are decreased by volatiles. Any estimate of the rheological properties of the Earth, for example from a postglacia ...
Evidence for plate tectonics, part 1
... The results of plate tectonic processes abound, from the mighty folds of the ancient and well worn Appalachians, the majestic escarpments of the East African Rift Valley and the Palisades of the Hudson River, and the volcanoes that imperil cities in Iceland, Indonesia, Japan and Mexico. Even idylli ...
... The results of plate tectonic processes abound, from the mighty folds of the ancient and well worn Appalachians, the majestic escarpments of the East African Rift Valley and the Palisades of the Hudson River, and the volcanoes that imperil cities in Iceland, Indonesia, Japan and Mexico. Even idylli ...
Plate Tectonics: A Paradigm Under Threat
... but do not provide evidence for plate motions of the kind predicted by plate tectonics unless the relative motions predicted among all plates are observed. However, many of the results have shown no definite pattern and have been confusing and contradictory, giving rise to a variety of ad hoc hypoth ...
... but do not provide evidence for plate motions of the kind predicted by plate tectonics unless the relative motions predicted among all plates are observed. However, many of the results have shown no definite pattern and have been confusing and contradictory, giving rise to a variety of ad hoc hypoth ...
Postglacial rebound at the northern Cascadia subduction zone
... A major structural element in the Puget Lowland is the east}west-trending Seattle fault (Fig. 2), a south-dipping thrust fault. Movement on this fault would increase the elevation of the surface above the thrust plane, a!ecting the observed crustal tilts. According to Fig. 2 of Pratt et al. (1997), ...
... A major structural element in the Puget Lowland is the east}west-trending Seattle fault (Fig. 2), a south-dipping thrust fault. Movement on this fault would increase the elevation of the surface above the thrust plane, a!ecting the observed crustal tilts. According to Fig. 2 of Pratt et al. (1997), ...
Vertical stretching and crustal thickening at Nanga Parbat, Pakistan
... neotectonics; 8159 Tectonophysics: Evolution of the Earth: Rheology—crust and lithosphere; K EYWORDS : continental tectonics, strain partitioning, Himalayas, Nanga Parbat ...
... neotectonics; 8159 Tectonophysics: Evolution of the Earth: Rheology—crust and lithosphere; K EYWORDS : continental tectonics, strain partitioning, Himalayas, Nanga Parbat ...
Evolution of the Kurile-Kamchatkan Volcanic Arcs and Dynamics of
... VA volcanic rocks of the Great Kurile Islands have a similar composition. “Green tuff”, volcanogenic-siliceous–diatomite, andesite–basaltic andesite, and andesite formation complexes have been described there [Sergeev, Krasny, 1987; Piscunov, 1987]. The oldest of these is the Oligocene–Middle Miocen ...
... VA volcanic rocks of the Great Kurile Islands have a similar composition. “Green tuff”, volcanogenic-siliceous–diatomite, andesite–basaltic andesite, and andesite formation complexes have been described there [Sergeev, Krasny, 1987; Piscunov, 1987]. The oldest of these is the Oligocene–Middle Miocen ...
Unraveling topography around subduction zones from
... zones more than anywhere else, have strong spatial gradients. At the surface of the Earth, the conjunction of these processes not only produces the most important deviations from the geoid (outlined by the 5-10 km deep trenches), but also the largest topographic slopes, offshore and onshore. The top ...
... zones more than anywhere else, have strong spatial gradients. At the surface of the Earth, the conjunction of these processes not only produces the most important deviations from the geoid (outlined by the 5-10 km deep trenches), but also the largest topographic slopes, offshore and onshore. The top ...
On the structure and mechanical behaviour of the - Perso-sdt
... lithosphere to localize deformations caused by external loads. The average effective elastic thickness is relatively high in the BRZ (about 50 km, see [29]) compared to other continental rift zones, but it is much lower than the maximum mechanical thickness that could be expected for a lithosphere o ...
... lithosphere to localize deformations caused by external loads. The average effective elastic thickness is relatively high in the BRZ (about 50 km, see [29]) compared to other continental rift zones, but it is much lower than the maximum mechanical thickness that could be expected for a lithosphere o ...
Plate tectonic evolution of the southern margin of
... Thirteen time interval maps were constructed, which depict the Triassic to Neogene plate tectonic configuration, paleogeography and general lithofacies of the southern margin of Eurasia. The aim of this paper is to provide an outline of the geodynamic evolution and position of the major tectonic ele ...
... Thirteen time interval maps were constructed, which depict the Triassic to Neogene plate tectonic configuration, paleogeography and general lithofacies of the southern margin of Eurasia. The aim of this paper is to provide an outline of the geodynamic evolution and position of the major tectonic ele ...
Buildup of a dynamically supported orogenic plateau: Numerical
... The upper boundary condition is a free surface. Lateral boundary conditions are kinematic (horizontal velocities). The Winkler’s hydrostatic pliable bottom is used as the lower boundary [Burov et al., 1998]. This semifree condition allows the slab to deflect locally the lower boundary of the model by ...
... The upper boundary condition is a free surface. Lateral boundary conditions are kinematic (horizontal velocities). The Winkler’s hydrostatic pliable bottom is used as the lower boundary [Burov et al., 1998]. This semifree condition allows the slab to deflect locally the lower boundary of the model by ...
Europe from the bottom up: A statistical examination of the central
... and Pedersen, 2009; Wilde-Piorko et al., 2010). Within both Phanerozoic and Precambrian Europe there are significant lateral variations in the depth to the LAB, particularly associated with Alpine subduction. In general, the variations in Precambrian Europe are smoother, except for the western and no ...
... and Pedersen, 2009; Wilde-Piorko et al., 2010). Within both Phanerozoic and Precambrian Europe there are significant lateral variations in the depth to the LAB, particularly associated with Alpine subduction. In general, the variations in Precambrian Europe are smoother, except for the western and no ...
View - GFZpublic
... subduction: Insights from 3-D thermomechanical laboratory experiments, Tectonics, 31, TC2015, doi:10.1029/2011TC003060. ...
... subduction: Insights from 3-D thermomechanical laboratory experiments, Tectonics, 31, TC2015, doi:10.1029/2011TC003060. ...
Tectonic re-interpretation of the Banggai
... Abstract: High resolution multibeam bathymetric and seismic data from the area north of the Banggai-Sula Islands, Indonesia, provide a new insight into the geological history of the boundary between the East Sulawesi ophiolite, the Banggai-Sula microcontinent and the Molucca Sea collision zone. Majo ...
... Abstract: High resolution multibeam bathymetric and seismic data from the area north of the Banggai-Sula Islands, Indonesia, provide a new insight into the geological history of the boundary between the East Sulawesi ophiolite, the Banggai-Sula microcontinent and the Molucca Sea collision zone. Majo ...
Collision of continental corner from 3
... but 1322 ◦ C at 90 km depth (slightly warmer than the subducting continent). The relatively thin and hot continental lithosphere is applied in consistency with some mountain belts, such as Tibet (e.g., Owens and Zandt, 1997; Tilmann et al., 2003; Liang et al., 2012). The thermal structure of the oce ...
... but 1322 ◦ C at 90 km depth (slightly warmer than the subducting continent). The relatively thin and hot continental lithosphere is applied in consistency with some mountain belts, such as Tibet (e.g., Owens and Zandt, 1997; Tilmann et al., 2003; Liang et al., 2012). The thermal structure of the oce ...
Ocean Rises are Products of Variable Mantle Composition
... Ocean ridges, where Earth’s tectonic plates are pulled apart, vary from more than 5km depth in the Arctic to 750 m above sea level in Iceland. This huge relief is generally attributed to mantle plumes underlying mantle hotspots, areas of enormous volcanism marked by ocean islands. The plumes are tho ...
... Ocean ridges, where Earth’s tectonic plates are pulled apart, vary from more than 5km depth in the Arctic to 750 m above sea level in Iceland. This huge relief is generally attributed to mantle plumes underlying mantle hotspots, areas of enormous volcanism marked by ocean islands. The plumes are tho ...
PDF
... geologists, geophysicists and geodynamicists to attack the problem from new perspectives. ...
... geologists, geophysicists and geodynamicists to attack the problem from new perspectives. ...
Numerical Geodynamic Modeling of Continental Convergent Margins
... the trench causing slow down of the convergence that, eventually, may stop. However, before collision ceases, convergence between the plates can continue actively for tens of millions of years after ocean closure as it is testified by the 50 Ma active collisions in the Western Alps and Himalayas (e.g ...
... the trench causing slow down of the convergence that, eventually, may stop. However, before collision ceases, convergence between the plates can continue actively for tens of millions of years after ocean closure as it is testified by the 50 Ma active collisions in the Western Alps and Himalayas (e.g ...
Plate rotation during continental collision and its relationship with
... deeper, and heat material up to 300 C hotter, than an orthogonal collision. Our diachronous collision model predicts that subducted continental margin material returns to the surface only in the region where collision initiated. The diachronous collision model is consistent with petrological and ge ...
... deeper, and heat material up to 300 C hotter, than an orthogonal collision. Our diachronous collision model predicts that subducted continental margin material returns to the surface only in the region where collision initiated. The diachronous collision model is consistent with petrological and ge ...
Pyrenean orogeny and plate kinematics
... Figure 3. Main magnetic and bathymetric features in the Bay of Biscay and the northeast Atlantic Ocean as extracted from Verhoef et al. [1996] and Sibuet et al. [2004]. The bathymetric contours are at 200-m intervals. EU, Eurasian; IB, Iberian; and NA, North American plates. Also shown are the fossi ...
... Figure 3. Main magnetic and bathymetric features in the Bay of Biscay and the northeast Atlantic Ocean as extracted from Verhoef et al. [1996] and Sibuet et al. [2004]. The bathymetric contours are at 200-m intervals. EU, Eurasian; IB, Iberian; and NA, North American plates. Also shown are the fossi ...
3D geodynamics of Arctic region and model of Amerasia Basin
... Moma Mountains (Fig. 4). Further towards the Kamchatka Peninsula the boundary is not observed in a geological structure. For seeing this fact it is enough to look at geological (Geological ..., 2008) or tectonic (Geodynamics ..., 2006) (Fig. 5) maps of ...
... Moma Mountains (Fig. 4). Further towards the Kamchatka Peninsula the boundary is not observed in a geological structure. For seeing this fact it is enough to look at geological (Geological ..., 2008) or tectonic (Geodynamics ..., 2006) (Fig. 5) maps of ...
Imag(in)ing the continental lithosphere
... 1995), although most tomographic images of the craton show high velocity roots extending to at least 200 km depth, and in some cases to depths greater than 300 km (e.g., Grand, 1994; Van der Lee and Nolet, 1997). Since body wave tomographic images smear anomalies along ray paths and the angular band ...
... 1995), although most tomographic images of the craton show high velocity roots extending to at least 200 km depth, and in some cases to depths greater than 300 km (e.g., Grand, 1994; Van der Lee and Nolet, 1997). Since body wave tomographic images smear anomalies along ray paths and the angular band ...
11. GEODYNAMIC EVOLUTION OF THE CÔTE D`IVOIRE
... crusts. During Late Cretaceous times, the transform margin experienced continuous subsidence leading to the progressive upslope migration of the reef. An increasing subsidence rate characterized the early Coniacian, close to the time when the first continent/ocean transform transition occurred. No s ...
... crusts. During Late Cretaceous times, the transform margin experienced continuous subsidence leading to the progressive upslope migration of the reef. An increasing subsidence rate characterized the early Coniacian, close to the time when the first continent/ocean transform transition occurred. No s ...