Course Descriptions
... important applications in Earth science, beyond the level of GEOS 5303. Topics include robust statistics, exploratory data analysis, surface modeling and contouring, Kriging, analysis of point patterns and directional data. Factor, cluster and time series analysis may also be considered. Emphasis wi ...
... important applications in Earth science, beyond the level of GEOS 5303. Topics include robust statistics, exploratory data analysis, surface modeling and contouring, Kriging, analysis of point patterns and directional data. Factor, cluster and time series analysis may also be considered. Emphasis wi ...
EVOLUTION OF THE NORTH AMERICAN CORDILLERA William R
... of the globe (Figure 3). Both orogenic belts relate to the breakup of the PermianTriassic supercontinent of Pangea beginning early in Mesozoic time, but in different ways, as the Atlantic and Indian oceans opened to disrupt Pangea by seafloor spreading. Alpine-Himalayan evolution has involved the su ...
... of the globe (Figure 3). Both orogenic belts relate to the breakup of the PermianTriassic supercontinent of Pangea beginning early in Mesozoic time, but in different ways, as the Atlantic and Indian oceans opened to disrupt Pangea by seafloor spreading. Alpine-Himalayan evolution has involved the su ...
evolution of the north american cordillera
... of the globe (Figure 3). Both orogenic belts relate to the breakup of the PermianTriassic supercontinent of Pangea beginning early in Mesozoic time, but in different ways, as the Atlantic and Indian oceans opened to disrupt Pangea by seafloor spreading. Alpine-Himalayan evolution has involved the su ...
... of the globe (Figure 3). Both orogenic belts relate to the breakup of the PermianTriassic supercontinent of Pangea beginning early in Mesozoic time, but in different ways, as the Atlantic and Indian oceans opened to disrupt Pangea by seafloor spreading. Alpine-Himalayan evolution has involved the su ...
Cenozoic Sediments, Volcanics, and Related Uranium in the Basin
... deposited during the Basin and Range disturbance. The Basin and Range disturbance (Scarborough and Peirce, 1978) is restricted in this paper, as it was in Gilbert's (1875a, 1928) original discussions, to that episode of high-angle normal faulting that blocked out the present physiography. Basin-fill ...
... deposited during the Basin and Range disturbance. The Basin and Range disturbance (Scarborough and Peirce, 1978) is restricted in this paper, as it was in Gilbert's (1875a, 1928) original discussions, to that episode of high-angle normal faulting that blocked out the present physiography. Basin-fill ...
A. M. Celâl ŞENGÖR, Boris A. NATAL`IN, Gürsel
... the material of which is of ancient continental provenance, they in places exhibit Proterozoic zircon ages and isotopic signatures inherited from their ancient source terrains leading to the mistaken conclusion of the presence of ancient continental crust under such arcs. It seems imperative to have ...
... the material of which is of ancient continental provenance, they in places exhibit Proterozoic zircon ages and isotopic signatures inherited from their ancient source terrains leading to the mistaken conclusion of the presence of ancient continental crust under such arcs. It seems imperative to have ...
Minerals and Rocks - The University Digital Library
... sedimentary rocks near a magma chamber will be heated. The magma may have a temperature in the vicinity of 1200°C. Sedimentary rocks close to the chamber will be heated more than those further away. If shale is heated the clay minerals break down to form new minerals that are stable at higher temper ...
... sedimentary rocks near a magma chamber will be heated. The magma may have a temperature in the vicinity of 1200°C. Sedimentary rocks close to the chamber will be heated more than those further away. If shale is heated the clay minerals break down to form new minerals that are stable at higher temper ...
2. Geology and tectonics of the Aegean - diss.fu
... a more ductile lower crust (Melis et al., 1989; Rigo et al., 1995). Its western segment is connected to the Ionian trench system by a series of NE-trending transform faults with dextral polarity called the Kefallonia Fault Zone (KFZ). The rift's eastern segment transverses the volcanic arc of the Ae ...
... a more ductile lower crust (Melis et al., 1989; Rigo et al., 1995). Its western segment is connected to the Ionian trench system by a series of NE-trending transform faults with dextral polarity called the Kefallonia Fault Zone (KFZ). The rift's eastern segment transverses the volcanic arc of the Ae ...
Geophysical and Petrological Constraints on Ocean Plate Dynamics
... that the oceanic mantle potential temperature must be ~60 ºC hotter than current estimates. Chapter 3 goes further to provide a more accurate parameterization of the anhydrous mantle solidus from experiments over a range of pressures. This chapter concludes that the range of potential temperatures o ...
... that the oceanic mantle potential temperature must be ~60 ºC hotter than current estimates. Chapter 3 goes further to provide a more accurate parameterization of the anhydrous mantle solidus from experiments over a range of pressures. This chapter concludes that the range of potential temperatures o ...
Imaging crust and upper mantle beneath Mount Fuji, Japan, by
... Fuji has been much larger than that of other island-arc volcanoes in Japan. Tsukui et al. [1986] estimated that the average eruption rate of Mount Fuji is about 5 km3/ka, while typical subduction-related volcanoes in Japan are about 0.01–0.1 km3/ka. Second, Mount Fuji has ejected basaltic products d ...
... Fuji has been much larger than that of other island-arc volcanoes in Japan. Tsukui et al. [1986] estimated that the average eruption rate of Mount Fuji is about 5 km3/ka, while typical subduction-related volcanoes in Japan are about 0.01–0.1 km3/ka. Second, Mount Fuji has ejected basaltic products d ...
Unit 1 Lesson 3: Definition Assignment (Original)
... As the hanging wall descends down the curved fracture, the rock becomes unstable and collapses; forming a “rollover effect” (Williams 789). How does a listric normal fault occur? Listric normal faults are formed when two plates break apart and begin to move away from each other. This induces stress ...
... As the hanging wall descends down the curved fracture, the rock becomes unstable and collapses; forming a “rollover effect” (Williams 789). How does a listric normal fault occur? Listric normal faults are formed when two plates break apart and begin to move away from each other. This induces stress ...
THESIS SEAFLOOR SPREADING IN THE EASTERN GULF OF
... the Upper Triassic-Lower Jurassic Huizachal redbeds essentially coincides spatially with the Permian-Triassic plutonic belt, and they occur in a 400-km-long and 50- km-wide zone ...
... the Upper Triassic-Lower Jurassic Huizachal redbeds essentially coincides spatially with the Permian-Triassic plutonic belt, and they occur in a 400-km-long and 50- km-wide zone ...
HIGH-Mg ARC-ANKARAMITIC DIKES, GREENHILLS
... the high-Mg dikes vary greatly in relative proportion and, in some cases, show evidence of flowage differentiation. Matrices range from monomineralic pale greenish hornblende to medium-grained plagioclase – orthopyroxene – clinopyroxene plus subordinate magmatic brownish and later-stage greenish hor ...
... the high-Mg dikes vary greatly in relative proportion and, in some cases, show evidence of flowage differentiation. Matrices range from monomineralic pale greenish hornblende to medium-grained plagioclase – orthopyroxene – clinopyroxene plus subordinate magmatic brownish and later-stage greenish hor ...
Mid-crustal_magmatic.. - Department of Earth Sciences
... mechanisms rather than searching for a single endmember mechanism. One useful means of evaluating natural systems is to examine the former propagating margins or `tips' of igneous bodies, that is the host rock occupying the region into which magma was moving. This region potentially preserves a grea ...
... mechanisms rather than searching for a single endmember mechanism. One useful means of evaluating natural systems is to examine the former propagating margins or `tips' of igneous bodies, that is the host rock occupying the region into which magma was moving. This region potentially preserves a grea ...
Bivergent thrust wedges surrounding oceanic island arcs: Insight
... Bivergent thrust wedges surrounding oceanic island arcs kilometers of uplift, as well as rotation around a vertical axis, affected the island (Larue, 1994). In post-Oligocene time, a carbonate platform was formed over the arc complex. Recent exhumation of mid- or lower-crustal rocks has not occurred ...
... Bivergent thrust wedges surrounding oceanic island arcs kilometers of uplift, as well as rotation around a vertical axis, affected the island (Larue, 1994). In post-Oligocene time, a carbonate platform was formed over the arc complex. Recent exhumation of mid- or lower-crustal rocks has not occurred ...
THE SETTING OF OROGENIC, AURIFEROUS QUARTZ VEINS AT
... versus poorly magnetic and non-conductive horizons within the rocks of the study area. These potential-field datasets have significantly improved our knowledge of the 3D architecture of the rocks of the region and have greatly facilitated the construction of new geological maps. One significant cont ...
... versus poorly magnetic and non-conductive horizons within the rocks of the study area. These potential-field datasets have significantly improved our knowledge of the 3D architecture of the rocks of the region and have greatly facilitated the construction of new geological maps. One significant cont ...
11. GEODYNAMIC EVOLUTION OF THE CÔTE D`IVOIRE
... Moreover, siliciclastic sediments cropping out along the nearby southern continental slope are also considered to have been deposited in a very shallow marine deltaic environment (Guiraud et al., 1997b). In contrast, siliciclastic sediments from Sites 961 and 962 were deposited into an open marine e ...
... Moreover, siliciclastic sediments cropping out along the nearby southern continental slope are also considered to have been deposited in a very shallow marine deltaic environment (Guiraud et al., 1997b). In contrast, siliciclastic sediments from Sites 961 and 962 were deposited into an open marine e ...
SUPO_Earth_Science_Assessments_May09
... the distances between stars are vast. stars are at different points in their life cycles. Earth’s atmosphere distorts our view of the stars. there is too much light pollution on Earth to study stars. ...
... the distances between stars are vast. stars are at different points in their life cycles. Earth’s atmosphere distorts our view of the stars. there is too much light pollution on Earth to study stars. ...
The crustal structure of the southern Caspian region
... of the basin. The Moho beneath the south Caspian basin has a broad arch-like structure whose western boundary is a relatively narrow zone across which the crust thins rapidly (~20 km thinning over a 100 km zone) and whose eastern boundary has a more gradual change in crustal thickness (~20 km thinni ...
... of the basin. The Moho beneath the south Caspian basin has a broad arch-like structure whose western boundary is a relatively narrow zone across which the crust thins rapidly (~20 km thinning over a 100 km zone) and whose eastern boundary has a more gradual change in crustal thickness (~20 km thinni ...
Dynamics of Volcanic and Meteorological Clouds Produced on 26
... this vol). This was followed by a fast-rising pyroclastic debris avalanche which generated an important volcanic cloud (Bonadonna et al. this vol). While the 26 December 1997 volcanic ash cloud is large relative to other Soufriére Hills volcanic clouds, it is an order of magnitude smaller than thos ...
... this vol). This was followed by a fast-rising pyroclastic debris avalanche which generated an important volcanic cloud (Bonadonna et al. this vol). While the 26 December 1997 volcanic ash cloud is large relative to other Soufriére Hills volcanic clouds, it is an order of magnitude smaller than thos ...
U-Pb MINERAL AGE DETERMINATIONS FROM ARCHEAN ROCKS
... and syenitic rocks cross-cutting the Tulppio metavolcanic belt have minimum zircon ages of c. 2.80 Ga, and a hornblende-gneiss inclusion within the Lomperovaara tonalite gives the same 2.83 Ga as a tonalite of the Ahmatunturi complex. The tonalites of the Naruska granitoid complex register an age of ...
... and syenitic rocks cross-cutting the Tulppio metavolcanic belt have minimum zircon ages of c. 2.80 Ga, and a hornblende-gneiss inclusion within the Lomperovaara tonalite gives the same 2.83 Ga as a tonalite of the Ahmatunturi complex. The tonalites of the Naruska granitoid complex register an age of ...
The Development of Highly Strained Rocks in the Pelican Window
... Reinvestigation in the summer of 1988 of shoreline outcrops on Pelican and Mirond Lakes (Lewry and Macdonald, 1988) revealed the presence of rocks more high· ly strained than previously explicitly documented, and suggested that some re-evaluation of protolith interpretations was required. This summe ...
... Reinvestigation in the summer of 1988 of shoreline outcrops on Pelican and Mirond Lakes (Lewry and Macdonald, 1988) revealed the presence of rocks more high· ly strained than previously explicitly documented, and suggested that some re-evaluation of protolith interpretations was required. This summe ...
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.