Active thrusting in the inner forearc of an erosive convergent margin
... systems that drain the Pacific slope typically follow these margin-perpendicular faults. Correlation of marine and fluvial terraces between drainages and across faults along the Costa Rican Pacific coast reveals a pattern of spatially variable forearc uplift that roughly coincides with the distribut ...
... systems that drain the Pacific slope typically follow these margin-perpendicular faults. Correlation of marine and fluvial terraces between drainages and across faults along the Costa Rican Pacific coast reveals a pattern of spatially variable forearc uplift that roughly coincides with the distribut ...
visualization 3: earthquakes at divergent plate
... ‘Quakes Question #5: What type of plate boundary is this? Compare the characteristics of the earthquakes here with those that occur on continents in convergent boundaries (such as the Himalayas) and with other earthquakes at divergent boundaries. • The earthquakes here are mostly all a small magnitu ...
... ‘Quakes Question #5: What type of plate boundary is this? Compare the characteristics of the earthquakes here with those that occur on continents in convergent boundaries (such as the Himalayas) and with other earthquakes at divergent boundaries. • The earthquakes here are mostly all a small magnitu ...
Subduction kinematics and dynamic constraints
... the oblique or lateral ramp of a thrust at shallow levels in an accretionary prism is steeper than the frontal ramp. Cruciani et al. (2005) reached similar conclusions of Lallemand et al. (2005) stating no correlation between slab age and dip of the slab, but their analysis is stopped to about 250 k ...
... the oblique or lateral ramp of a thrust at shallow levels in an accretionary prism is steeper than the frontal ramp. Cruciani et al. (2005) reached similar conclusions of Lallemand et al. (2005) stating no correlation between slab age and dip of the slab, but their analysis is stopped to about 250 k ...
Subduction kinematics and dynamic constraints
... the oblique or lateral ramp of a thrust at shallow levels in an accretionary prism is steeper than the frontal ramp. Cruciani et al. (2005) reached similar conclusions of Lallemand et al. (2005) stating no correlation between slab age and dip of the slab, but their analysis is stopped to about 250 k ...
... the oblique or lateral ramp of a thrust at shallow levels in an accretionary prism is steeper than the frontal ramp. Cruciani et al. (2005) reached similar conclusions of Lallemand et al. (2005) stating no correlation between slab age and dip of the slab, but their analysis is stopped to about 250 k ...
Geophysical Journal International - E
... 5 Departamento de Geofı́sica, Universidad Complutense de Madrid, Spain 6 Departamento de Geologı́a, Universidad de Oviedo, Oviedo, Spain 7 Instituto Geologico y Minero de España, Madrid, Spain ...
... 5 Departamento de Geofı́sica, Universidad Complutense de Madrid, Spain 6 Departamento de Geologı́a, Universidad de Oviedo, Oviedo, Spain 7 Instituto Geologico y Minero de España, Madrid, Spain ...
Numerical lithospheric modelling: rheology, stress and deformation
... This thesis deals with the analysis of the rheological structure and tectonic modelling of the Fennoscandian Shield. First, a short introduction to the geology and geophysics of the Fennoscandian Shield is presented followed by a description of rheological concepts. Second, the applied modelling pro ...
... This thesis deals with the analysis of the rheological structure and tectonic modelling of the Fennoscandian Shield. First, a short introduction to the geology and geophysics of the Fennoscandian Shield is presented followed by a description of rheological concepts. Second, the applied modelling pro ...
![jeopardy_platetectonics[1].](http://s1.studyres.com/store/data/008388988_1-c1f7a56df21131a376d1ab2c8c0b8111-300x300.png)
jeopardy_platetectonics[1].
... • QUESTION: How is a tectonic plate like an iceberg? • ANSWER: There is more mass below the surface than above the surface. ...
... • QUESTION: How is a tectonic plate like an iceberg? • ANSWER: There is more mass below the surface than above the surface. ...
subduction to strike-slip transitions on plate boundaries
... Zealand, Phd Thesis, University of Nice, France. [3] Barnes, P.M. et al., 1998, Strain partitioning in the transition area between oblique subduction and continental collision: Hikurangi margin, New Zealand. Tectonics, 17, 534-557. ...
... Zealand, Phd Thesis, University of Nice, France. [3] Barnes, P.M. et al., 1998, Strain partitioning in the transition area between oblique subduction and continental collision: Hikurangi margin, New Zealand. Tectonics, 17, 534-557. ...
Low seismic velocity layers in the Earth`s crust beneath Eastern
... secondary models described below were constructed with 1-km step using 0.5-km displacement of boundaries and with subsequent smoothing of the S-wave velocity with a three-step running window. 3.2.3. Resolution and S-wave velocity decrease Taking into account the results of real data inversion (see S ...
... secondary models described below were constructed with 1-km step using 0.5-km displacement of boundaries and with subsequent smoothing of the S-wave velocity with a three-step running window. 3.2.3. Resolution and S-wave velocity decrease Taking into account the results of real data inversion (see S ...
The Central Asia collision zone: numerical present-day kinematics
... the geophysical-petrological study finally suggest that the Himalaya-Tibetan orogen is supported by a thick buoyant lithospheric mantle in the western profile and by a lithospheric mantle thinning in the north-eastern sector of the Tibetan Plateau along the eastern profile. The combination of the pr ...
... the geophysical-petrological study finally suggest that the Himalaya-Tibetan orogen is supported by a thick buoyant lithospheric mantle in the western profile and by a lithospheric mantle thinning in the north-eastern sector of the Tibetan Plateau along the eastern profile. The combination of the pr ...
Temporal variation in relative zircon abundance throughout Earth
... little zircon per mass of whole rock both relative to either Archean felsic rocks or post-Archean mafic rocks when crystallised to their solidus at a given set of P, H 2O conditions. This dramatic deficit is equivalent to a difference of more than 10 wt. % silica in whole rock composition, such that ...
... little zircon per mass of whole rock both relative to either Archean felsic rocks or post-Archean mafic rocks when crystallised to their solidus at a given set of P, H 2O conditions. This dramatic deficit is equivalent to a difference of more than 10 wt. % silica in whole rock composition, such that ...
Kinematic reconstruction of the Caribbean
... (1988) provided poles for a large number of tectonic elements in the Caribbean region, placed in context of the history of seafloor spreading in the Central and South Atlantic (based on poles of Klitgord and Schouten, 1986), magnetic anomalies of the Cayman Trough (using Rosencrantz and Sclater, 1986 ...
... (1988) provided poles for a large number of tectonic elements in the Caribbean region, placed in context of the history of seafloor spreading in the Central and South Atlantic (based on poles of Klitgord and Schouten, 1986), magnetic anomalies of the Cayman Trough (using Rosencrantz and Sclater, 1986 ...
The remarkable African Planation Surface
... There seems to be some confusion associated with planation surfaces. A planation surface is eroded into hard rock or sometimes into unconsolidated sediment by some watery erosive mechanism, usually leaving behind a veneer of rounded rocks on top. The rounded rocks show that water Surficial erosion a ...
... There seems to be some confusion associated with planation surfaces. A planation surface is eroded into hard rock or sometimes into unconsolidated sediment by some watery erosive mechanism, usually leaving behind a veneer of rounded rocks on top. The rounded rocks show that water Surficial erosion a ...
20 Transform Plate Boundaries - North Coast Distance Education
... Transform plate boundaries in the ocean basins are prominent linear features that are perpendicular to the midocean ridges. They are the short, active parts of fracture zones that may be several kilometers wide and thousands of kilometers long. The characteristics of oceanic fracture zones depend on ...
... Transform plate boundaries in the ocean basins are prominent linear features that are perpendicular to the midocean ridges. They are the short, active parts of fracture zones that may be several kilometers wide and thousands of kilometers long. The characteristics of oceanic fracture zones depend on ...
Chapter 22: Minerals, Rocks, and Volcanoes
... Earth were formed as the outer crust slowly solidified billions of years ago. • Therefore, the first rocks formed were igneous. • Since these initial rocks were formed, geologic processes have modified, covered, or eroded most of these ancient materials. • It is estimated that approximately 80% of t ...
... Earth were formed as the outer crust slowly solidified billions of years ago. • Therefore, the first rocks formed were igneous. • Since these initial rocks were formed, geologic processes have modified, covered, or eroded most of these ancient materials. • It is estimated that approximately 80% of t ...
Chapter 22 - Minerals, Rocks, and Volcanoes (Lecture Slides)
... cool at the surface of the Earth, generally due to some type of volcanic eruption – Intrusive igneous – igneous rocks that cooled somewhere beneath the surface of the Earth • Intrusive igneous rocks only appear at the Earth’s surface due to erosion of the overlying rocks or due to some type of uplif ...
... cool at the surface of the Earth, generally due to some type of volcanic eruption – Intrusive igneous – igneous rocks that cooled somewhere beneath the surface of the Earth • Intrusive igneous rocks only appear at the Earth’s surface due to erosion of the overlying rocks or due to some type of uplif ...
Lithospheric evolution of the Andean fold–thrust belt, Bolivia, and
... We combine geological and geophysical data to develop a generalized model for the lithospheric evolution of the central Andean plateau between 188 and 208 S from Late Cretaceous to present. By integrating geophysical results of upper mantle structure, crustal thickness, and composition with recently ...
... We combine geological and geophysical data to develop a generalized model for the lithospheric evolution of the central Andean plateau between 188 and 208 S from Late Cretaceous to present. By integrating geophysical results of upper mantle structure, crustal thickness, and composition with recently ...
AZU_TD_BOX206_E9791_
... tive drag, and other forces which are not modeled but are described such as transform fault resistance, radial push from hot spots and distant forces from other plates. Thirty different models represent combinations of the plate-driving forces and variations of the initial and boundary conditions. ...
... tive drag, and other forces which are not modeled but are described such as transform fault resistance, radial push from hot spots and distant forces from other plates. Thirty different models represent combinations of the plate-driving forces and variations of the initial and boundary conditions. ...
Large igneous province
A large igneous province (LIP) is an extremely large accumulation of igneous rocks, including liquid rock (intrusive) or volcanic rock formations (extrusive), when hot magma extrudes from inside the Earth and flows out. The source of many or all LIPs is variously attributed to mantle plumes or to processes associated with plate tectonics. Types of LIPs can include large volcanic provinces (LVP), created through flood basalt and large plutonic provinces (LPP). Eleven distinct flood basalt episodes occurred in the past 250 million years, creating volcanic provinces, which coincided with mass extinctions in prehistoric times. Formation depends on a range of factors, such as continental configuration, latitude, volume, rate, duration of eruption, style and setting (continental vs. oceanic), the preexisting climate state, and the biota resilience to change.