Surface rupture of the 14 Nov 2016 Kaikoura Earthquake .. and more
... boundary of the Pacific and Australian plates ...
... boundary of the Pacific and Australian plates ...
Understanding the thermal evolution of deep
... boreholes7. It is now generally accepted that these margins form by extension of the lithospheric plate, which is 120±20 km thick (Fig. 3). Simple kinematic models were developed in the late 1970s and 1980s that describe the growth of margins in terms of , the stretching factor8,9. The amount and r ...
... boreholes7. It is now generally accepted that these margins form by extension of the lithospheric plate, which is 120±20 km thick (Fig. 3). Simple kinematic models were developed in the late 1970s and 1980s that describe the growth of margins in terms of , the stretching factor8,9. The amount and r ...
Earth Inside Out Sculpting the
... about the might of the mantle began to fade away when researchers created the first blurry images of the earth’s interior. About 20 years ago scientists came up with a way to make three-dimensional snapshots of the mantle by measuring vibrations that are set in motion by earthquakes originating in t ...
... about the might of the mantle began to fade away when researchers created the first blurry images of the earth’s interior. About 20 years ago scientists came up with a way to make three-dimensional snapshots of the mantle by measuring vibrations that are set in motion by earthquakes originating in t ...
Microseismicity of the ultraslow-spreading Gakkel ridge, Arctic
... GPS devices and arranged as a triangle with a central seismometer and a side length of about 1 km. Three such arrays were deployed in different rift segments and recorded the seismic activity continuously for 5–11 days at a sampling rate of 100 Hz. The array technique allowed to distinguish clearly ...
... GPS devices and arranged as a triangle with a central seismometer and a side length of about 1 km. Three such arrays were deployed in different rift segments and recorded the seismic activity continuously for 5–11 days at a sampling rate of 100 Hz. The array technique allowed to distinguish clearly ...
Microseismicity of the ultraslow-spreading Gakkel ridge
... GPS devices and arranged as a triangle with a central seismometer and a side length of about 1 km. Three such arrays were deployed in different rift segments and recorded the seismic activity continuously for 5–11 days at a sampling rate of 100 Hz. The array technique allowed to distinguish clearly ...
... GPS devices and arranged as a triangle with a central seismometer and a side length of about 1 km. Three such arrays were deployed in different rift segments and recorded the seismic activity continuously for 5–11 days at a sampling rate of 100 Hz. The array technique allowed to distinguish clearly ...
One-dimensional physical reference models for the upper mantle
... example, regional teleseismic travel time models mainly resolve anomalies relative to the (unknown) one-dimensional average structure below the stations. Furthermore, most seismic inversions are damped toward a starting model that very often is one of the global reference models. Thus a good underst ...
... example, regional teleseismic travel time models mainly resolve anomalies relative to the (unknown) one-dimensional average structure below the stations. Furthermore, most seismic inversions are damped toward a starting model that very often is one of the global reference models. Thus a good underst ...
INTRODUCTION TO TECTONICS
... mantle): the oceanic lithosphere has a 5 to 8km thick oceanic crust (with a basaltic composition) and the continental lithosphere has a 30km to 40km thick granitic-dioritic crust. The lithosphere is fragmented into pieces of variable shape and size, the plates. The edges of the plates are called pla ...
... mantle): the oceanic lithosphere has a 5 to 8km thick oceanic crust (with a basaltic composition) and the continental lithosphere has a 30km to 40km thick granitic-dioritic crust. The lithosphere is fragmented into pieces of variable shape and size, the plates. The edges of the plates are called pla ...
Book - School of Geosciences
... In week 6 and 7, we will consider evidence of how magmas evolve and the continental crust is formed. We will consider how elements cycle through subduction zones, building on knowledge from GEOS1003. Some of this recycling creates ore deposits. We will examine how humans have exploited natural geolo ...
... In week 6 and 7, we will consider evidence of how magmas evolve and the continental crust is formed. We will consider how elements cycle through subduction zones, building on knowledge from GEOS1003. Some of this recycling creates ore deposits. We will examine how humans have exploited natural geolo ...
ASOL SCIENCESCOPEhighschool14
... Earth’s lithosphere is divided into plates that are in motion with respect to one another. The lithosphere is composed of the crust and upper portion of the mantle. There are two different types of lithospheres — oceanic and continental — that have very different physical and mineralogic characteris ...
... Earth’s lithosphere is divided into plates that are in motion with respect to one another. The lithosphere is composed of the crust and upper portion of the mantle. There are two different types of lithospheres — oceanic and continental — that have very different physical and mineralogic characteris ...
Imag(in)ing the continental lithosphere
... We also examine the seismic velocity and density contrasts expected between various upper mantle constituents, including fertile upper mantle, depleted upper mantle, normal and eclogitized oceanic crust, and fertile mantle with and without partial melt. This leads directly to predicting the size of ...
... We also examine the seismic velocity and density contrasts expected between various upper mantle constituents, including fertile upper mantle, depleted upper mantle, normal and eclogitized oceanic crust, and fertile mantle with and without partial melt. This leads directly to predicting the size of ...
Crustal and upper mantle structure of southernmost South America
... Traditionally, the objective function is defined as the misfit between the synthetic seismogram and the data, so the best solution would generate the fit with absolute minimum error. Iterative linearized inversion is used when the structure is assumed to be a small variation from the starting model; ...
... Traditionally, the objective function is defined as the misfit between the synthetic seismogram and the data, so the best solution would generate the fit with absolute minimum error. Iterative linearized inversion is used when the structure is assumed to be a small variation from the starting model; ...
Unit 1 - Delmar
... Greenland and Antarctica are two of Earth’s highest regions. Many of their elevations, however, are not rock but another material. (Remember, the brown color in the shaded relief image represents high elevation, not the surface material.) To compare Greenland and Antarctica with other high regions a ...
... Greenland and Antarctica are two of Earth’s highest regions. Many of their elevations, however, are not rock but another material. (Remember, the brown color in the shaded relief image represents high elevation, not the surface material.) To compare Greenland and Antarctica with other high regions a ...
A seismic discontinuity in the upper mantle between the Eastern
... although these methods are restricted in their resolution capabilities. The relatively rare evidence for upper mantle refractors or reflectors in active source data enables challenging and interesting studies of the lower and not so well known part of the lithosphere. We present such an example from ...
... although these methods are restricted in their resolution capabilities. The relatively rare evidence for upper mantle refractors or reflectors in active source data enables challenging and interesting studies of the lower and not so well known part of the lithosphere. We present such an example from ...
Presentation - Copernicus.org
... Answer – During the well-established (Windley, Condie) 2.45-2.2Ga gap in zircon dates for orogenic granitoids and greenstone belts. Details -- In the 2.8-2.45Ga run-up to this Post-Archaean Hiatus, MOR crests deepened, finally lowering sea-level by >3km during the Hiatus. The ~10km erosion of craton ...
... Answer – During the well-established (Windley, Condie) 2.45-2.2Ga gap in zircon dates for orogenic granitoids and greenstone belts. Details -- In the 2.8-2.45Ga run-up to this Post-Archaean Hiatus, MOR crests deepened, finally lowering sea-level by >3km during the Hiatus. The ~10km erosion of craton ...
Consensus Nevada Priorities from the Western Nevada Basin and Range Community Velocity Model Workshops
... Develop new data for urban hazard mapping (goal of 1-sec waves), and incorporation into the Western Basin & Range CVM: o Reno/Carson City Urban Corridor (including the Lake Tahoe basin and the Fallon area) Construct cross sections of the significant basins, consistent with available geological and ...
... Develop new data for urban hazard mapping (goal of 1-sec waves), and incorporation into the Western Basin & Range CVM: o Reno/Carson City Urban Corridor (including the Lake Tahoe basin and the Fallon area) Construct cross sections of the significant basins, consistent with available geological and ...
Structural models of the Mediterranean lithospehre
... seismic events collected by ISC with M>3 (1904-‐2006). For each layer VS variability range is reported. The uncertainty on thickness is represented by texture. Centre: Interpreta7on of the model. The ...
... seismic events collected by ISC with M>3 (1904-‐2006). For each layer VS variability range is reported. The uncertainty on thickness is represented by texture. Centre: Interpreta7on of the model. The ...
A comprehensive model of the deformation process in the Nagamachi-Rifu
... or fault zone in the lower crust can reproduce the spatial pattern of the observed deformations, but amplitudes predicted by these models are smaller than those observed. The weak zone in the lower crust probably plays an important role in the stress accumulation process on the Nagamachi-Rifu fault ...
... or fault zone in the lower crust can reproduce the spatial pattern of the observed deformations, but amplitudes predicted by these models are smaller than those observed. The weak zone in the lower crust probably plays an important role in the stress accumulation process on the Nagamachi-Rifu fault ...
Wave-equation-based travel-time seismic tomography
... data (first P and S arrivals) of nearly 30 000 earthquakes www.solid-earth.net/5/1169/2014/ ...
... data (first P and S arrivals) of nearly 30 000 earthquakes www.solid-earth.net/5/1169/2014/ ...
geophysical characterization of albian carbonates reservoirs
... GEOPHYSICAL CHARACTERIZATION OF ALBIAN CARBONATES RESERVOIRS IN BRAZILIAN BASINS: THE SWEETNESS AS A TOOL FOR CARBONATE RESERVOIRS DEFINITION Maria Gabriela Castillo Vincentelli1 , Sergio Antonio Caceres Contreras1 and Michelle Uchoa Chaves2 ...
... GEOPHYSICAL CHARACTERIZATION OF ALBIAN CARBONATES RESERVOIRS IN BRAZILIAN BASINS: THE SWEETNESS AS A TOOL FOR CARBONATE RESERVOIRS DEFINITION Maria Gabriela Castillo Vincentelli1 , Sergio Antonio Caceres Contreras1 and Michelle Uchoa Chaves2 ...
Deep structure of the northeastern Japan arc
... nearly parallel to the slab and extending from depths of about 100 to 150 km to the Moho appear clearly. These regions of low seismic wave speed appear clearly not only in cross-sections (a), (b), (d) and (f), which pass through active volcanoes, but also in cross-sections (c) and (e), which do not ...
... nearly parallel to the slab and extending from depths of about 100 to 150 km to the Moho appear clearly. These regions of low seismic wave speed appear clearly not only in cross-sections (a), (b), (d) and (f), which pass through active volcanoes, but also in cross-sections (c) and (e), which do not ...
The velocity structure of the Earth Nomenclature
... 1D velocity model for the Earth Using the arrival times of all these phases at stations around the globe we can calculate a 1D average velocity model for the Earth Uppermost mantle low-velocity zone Transition zone: 410-660 km Earthquakes stop at ~660km ...
... 1D velocity model for the Earth Using the arrival times of all these phases at stations around the globe we can calculate a 1D average velocity model for the Earth Uppermost mantle low-velocity zone Transition zone: 410-660 km Earthquakes stop at ~660km ...
Crustal Velocity Structure in Iranian Kopeh
... and chemical properties. Depth and lateral variation of the Moho have strong influence on seismic wave propagation and shaking from damaging earthquakes in certain distance ranges [23]. P-waveform teleseismic receiver function analysis is becoming a common method to estimate the formation of major c ...
... and chemical properties. Depth and lateral variation of the Moho have strong influence on seismic wave propagation and shaking from damaging earthquakes in certain distance ranges [23]. P-waveform teleseismic receiver function analysis is becoming a common method to estimate the formation of major c ...
hanson_summer_2011_poster - Sound Ideas
... Persis Volcanics to see how plutonic and volcanic rocks are related. Our data indicate both formed by similar processes but do not have the same parent magma (thus are not genetically related). This study also uses geochemical data gathered from the Mt. Persis area with data from other studies to al ...
... Persis Volcanics to see how plutonic and volcanic rocks are related. Our data indicate both formed by similar processes but do not have the same parent magma (thus are not genetically related). This study also uses geochemical data gathered from the Mt. Persis area with data from other studies to al ...
Earthscope
Earthscope is an earth science program using geological and geophysical techniques to explore the structure and evolution of the North American continent and to understand the processes controlling earthquakes and volcanoes. The project has three components: USARRAY, the Plate Boundary Observatory, and the San Andreas Fault Observatory at Depth.The project is funded by the National Science Foundation (NSF), and the data produced is publicly accessible in real-time. Organizations associated with the project include UNAVCO, the Incorporated Research Institutions for Seismology (IRIS), Stanford University, the United States Geological Survey (USGS) and National Aeronautics and Space Administration (NASA). Several international organizations also contribute to the initiative.