plate tectonics lab worksheet
... Run the simulation programs and note the time interval maps noting the time period and any significant features and occurrences. ...
... Run the simulation programs and note the time interval maps noting the time period and any significant features and occurrences. ...
The Proterozoic Part 1 - University of South Alabama
... • This is about as far back as we can go with detailed paleogeography ...
... • This is about as far back as we can go with detailed paleogeography ...
Seismology - Università degli studi di Trieste
... Because of friction, the blocks do not slide, but are deformed. When the stresses within rocks exceed friction, rupture occurs. Elastic energy, stored in the system, is released after rupture in waves that radiate outward from the fault. Seismology I - Introduction ...
... Because of friction, the blocks do not slide, but are deformed. When the stresses within rocks exceed friction, rupture occurs. Elastic energy, stored in the system, is released after rupture in waves that radiate outward from the fault. Seismology I - Introduction ...
Density and lithospheric strength models of the Yellowstone–Snake
... focal depths. Results of this study suggest that the lower crust of the Snake River Plain (SRP) has been thickened by the addition of an underplated layer composed primarily of clinopyroxene, having a density of 3200 kg/m3. A mid-crustal high-density sill is composed of a series of gabbroic lenses i ...
... focal depths. Results of this study suggest that the lower crust of the Snake River Plain (SRP) has been thickened by the addition of an underplated layer composed primarily of clinopyroxene, having a density of 3200 kg/m3. A mid-crustal high-density sill is composed of a series of gabbroic lenses i ...
Geophysical Journal International
... Key words: Mantle processes; Phase transitions; North America. ...
... Key words: Mantle processes; Phase transitions; North America. ...
Laramide crustal thickening event in the Rocky Mountain Foreland
... huge regional "root" that now supports the foreland and Great Plains at up to 2 km average elevation. The same shear tractions that Brewer et al. [1980] invoked to cause the Wind River range overthrust may also have dragged and transported ductile lower crust from within the Sevier orogen in the Sou ...
... huge regional "root" that now supports the foreland and Great Plains at up to 2 km average elevation. The same shear tractions that Brewer et al. [1980] invoked to cause the Wind River range overthrust may also have dragged and transported ductile lower crust from within the Sevier orogen in the Sou ...
IDOE Workshop on Tectonic Patterns and Metallogenesis in East
... of the Indonesian archipelago (Mentawai Islands,Timor,etc.) ? Geologically this is an important question,which also has significant economic implicationsfor both metalliferous ore and/or hydrocarbon accumulation. 6.Why do some uplifted arc areas, such as the eastern arm of Sulawesi, contain ophiolit ...
... of the Indonesian archipelago (Mentawai Islands,Timor,etc.) ? Geologically this is an important question,which also has significant economic implicationsfor both metalliferous ore and/or hydrocarbon accumulation. 6.Why do some uplifted arc areas, such as the eastern arm of Sulawesi, contain ophiolit ...
Overheads shown in Lab on Geologic Maps
... • Determine the structure of rocks from the pattern created by the intersection of dipping layers with the (level) land surface. • Use strike, dip, and other map symbols to determine structure. • Formation: discrete mappable rock unit • Map notation of a formation: – Ex.: formation name age notation ...
... • Determine the structure of rocks from the pattern created by the intersection of dipping layers with the (level) land surface. • Use strike, dip, and other map symbols to determine structure. • Formation: discrete mappable rock unit • Map notation of a formation: – Ex.: formation name age notation ...
Chapter 12.4 - Planet Earth
... problem comes from the fact that not all rocks can be dated by radiometric methods. For a radiometric date to be useful, all minerals in the rock must have formed at about the same time. For this reason, radioactive isotopes can be used to determine when minerals in an igneous rock crystallized and ...
... problem comes from the fact that not all rocks can be dated by radiometric methods. For a radiometric date to be useful, all minerals in the rock must have formed at about the same time. For this reason, radioactive isotopes can be used to determine when minerals in an igneous rock crystallized and ...
Precambrian Crystalline Basement rocks of Eritrea
... Basements are rocks that make the basement, upon which all younger formations are deposited, and contain, the oldest rocks. Precambrian are crystalline rocks that comprise a wide variety of sedimentary, volcanic and intrusive rocks, which have been metamorphosed to varying degrees. The rocks are par ...
... Basements are rocks that make the basement, upon which all younger formations are deposited, and contain, the oldest rocks. Precambrian are crystalline rocks that comprise a wide variety of sedimentary, volcanic and intrusive rocks, which have been metamorphosed to varying degrees. The rocks are par ...
isotopic and chemical constraints on the development of
... to the time-integrated effects of the Rb/Sr ratios of its components.Hencenthe earth's continental crust, with its enhanced average Rb/Sr ratios, has developed higher average 87Sr/8uSr than the mantle. The effect of assimilation or melting of such crust, in general, is to add relatively radiogenic S ...
... to the time-integrated effects of the Rb/Sr ratios of its components.Hencenthe earth's continental crust, with its enhanced average Rb/Sr ratios, has developed higher average 87Sr/8uSr than the mantle. The effect of assimilation or melting of such crust, in general, is to add relatively radiogenic S ...
Document
... http://www.rocksforkids.com/RFK/identification.html http://volcano.und.edu/vwdocs/vwlessons/lessons/Slideshow/Me rocks/Metindex.html • http://www.windows.ucar.edu/tour/link=/earth/geology/meta_folia ted.html&edu=elem • http://www.ltcconline.net/julian/history/rocks.html • http://www.classzone.com/bo ...
... http://www.rocksforkids.com/RFK/identification.html http://volcano.und.edu/vwdocs/vwlessons/lessons/Slideshow/Me rocks/Metindex.html • http://www.windows.ucar.edu/tour/link=/earth/geology/meta_folia ted.html&edu=elem • http://www.ltcconline.net/julian/history/rocks.html • http://www.classzone.com/bo ...
PNG ON THE MOVE - GPS MONITORING OF PLATE TECTONICS
... valleys. Whole ocean floors have subducted beneath island arcs creating very deep ocean trenches, spawning destructive volcanoes. All of these forces have created the dramatic topography that characterises Papua New Guinea and contnues to this day. 7 centimetres a year may not seem to be very signif ...
... valleys. Whole ocean floors have subducted beneath island arcs creating very deep ocean trenches, spawning destructive volcanoes. All of these forces have created the dramatic topography that characterises Papua New Guinea and contnues to this day. 7 centimetres a year may not seem to be very signif ...
Cuban Geology - Red Cubana de la Ciencia
... The neo-autochthon is composed of slightly-deformed, latest Eocene to Recent sedimentary rocks, which unconformably overlie the folded belt. A large number of tectonic models for the Caribbean area have been published in recent years, but rarely include modern data on the geology of Cuba. The Author ...
... The neo-autochthon is composed of slightly-deformed, latest Eocene to Recent sedimentary rocks, which unconformably overlie the folded belt. A large number of tectonic models for the Caribbean area have been published in recent years, but rarely include modern data on the geology of Cuba. The Author ...
The Earth - WordPress.com
... This plate movement levels off seamounts, underwater mountains with steep sides and sharp peaks, and piles up the resulting debris in trenches. Such a buildup can cause continents to grow outward. Most scientists believe that much of western North America expanded outward over more than 200 million ...
... This plate movement levels off seamounts, underwater mountains with steep sides and sharp peaks, and piles up the resulting debris in trenches. Such a buildup can cause continents to grow outward. Most scientists believe that much of western North America expanded outward over more than 200 million ...
3-D Earth Structure Model
... of no significant openings that would provide access to the deep interior of the planet, and caves or cavities at great depth are nearly impossible based on our knowledge of temperature and pressure within the Earth and the properties of Earth materials. However, Verne’s story is an interesting one ...
... of no significant openings that would provide access to the deep interior of the planet, and caves or cavities at great depth are nearly impossible based on our knowledge of temperature and pressure within the Earth and the properties of Earth materials. However, Verne’s story is an interesting one ...
Volcanic Tsunamis - Earth and Space Sciences
... submarine volcanoes is poorly known, but is probably at least comparable to the total number of terrestrial volcanoes. In the Kurile arc south of Kamchatka, detailed surveys by Russian scientists identified at least 90 fresh-appearing submarine volcanic cones in the sea besides the many island volca ...
... submarine volcanoes is poorly known, but is probably at least comparable to the total number of terrestrial volcanoes. In the Kurile arc south of Kamchatka, detailed surveys by Russian scientists identified at least 90 fresh-appearing submarine volcanic cones in the sea besides the many island volca ...
as a PDF
... originate from the Ross Sea/Adare Trough area and the Transantarctic Mountains. We use a new Antarctic continental crustal-thinning grid, combined with a revised plate kinematic model based on East Antarctic – Australia – Pacific – West Antarctic plate circuit closure, to trace the geometry and exten ...
... originate from the Ross Sea/Adare Trough area and the Transantarctic Mountains. We use a new Antarctic continental crustal-thinning grid, combined with a revised plate kinematic model based on East Antarctic – Australia – Pacific – West Antarctic plate circuit closure, to trace the geometry and exten ...
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.