Geology ch 6 Rocks
... • Sulfur = smells like rotten eggs (odor) • Calcite = fizzes when HCL is put on it • Fluorite = Glows under UV light • Uraninite = radioactive • Etc. ...
... • Sulfur = smells like rotten eggs (odor) • Calcite = fizzes when HCL is put on it • Fluorite = Glows under UV light • Uraninite = radioactive • Etc. ...
Low-Density Anomalies in the Mantle
... In the beginning of the 1970s, Morgan [1] introduced the concept of the mantle plume into the everyday terminology of geological research. In succeeding years, different aspects of this hypothesis were considered: the heat source and mechanisms of plume ascent [2–4]; isotope-geochemical features [3, ...
... In the beginning of the 1970s, Morgan [1] introduced the concept of the mantle plume into the everyday terminology of geological research. In succeeding years, different aspects of this hypothesis were considered: the heat source and mechanisms of plume ascent [2–4]; isotope-geochemical features [3, ...
CHAPTER 19 - PLATE TECTONICS
... Conveyor belt-like movement of the sea floor from the mid-oceanic ridges to subduction beneath a continent or island arc in response to mantle convection was visualized in a proposal by Harry Hess in 1962. These ideas quickly became known as sea-floor spreading. Sea-floor spreading explains many pro ...
... Conveyor belt-like movement of the sea floor from the mid-oceanic ridges to subduction beneath a continent or island arc in response to mantle convection was visualized in a proposal by Harry Hess in 1962. These ideas quickly became known as sea-floor spreading. Sea-floor spreading explains many pro ...
• Observations related to plate tectonics • Plate tectonic theory
... descending plate drives subduction and most plate tectonic activity. It is common for the plate to fall vertically into the mantle so the trench retreats and back-arc spreading is needed to fill the void. A volcanic arc occurs above the point where the oceanic crust reaches 150 km depth. Why? The re ...
... descending plate drives subduction and most plate tectonic activity. It is common for the plate to fall vertically into the mantle so the trench retreats and back-arc spreading is needed to fill the void. A volcanic arc occurs above the point where the oceanic crust reaches 150 km depth. Why? The re ...
An East African desert will one day become an ocean
... Scientists think the eastern part more than 6,400 kilometers (4,000 of the African plate is sitting above miles) long is breaking the slab apart. a particularly fiery spot in Earth’s Eventually, a piece of East Africa mantle, or the layer of hot, solid will rip off from the continent and a material ...
... Scientists think the eastern part more than 6,400 kilometers (4,000 of the African plate is sitting above miles) long is breaking the slab apart. a particularly fiery spot in Earth’s Eventually, a piece of East Africa mantle, or the layer of hot, solid will rip off from the continent and a material ...
Plate Tectonics
... Plate Tectonics: Welcome to the greatest show on Earth. Propelled by intense heat simmering beneath the crust or the mantle, Earth’s surface is dramatically reshaping itself in an endless, slow-motion movement called plate tectonics. Tectonic plates or huge slabs of solid rocks separate, collide, an ...
... Plate Tectonics: Welcome to the greatest show on Earth. Propelled by intense heat simmering beneath the crust or the mantle, Earth’s surface is dramatically reshaping itself in an endless, slow-motion movement called plate tectonics. Tectonic plates or huge slabs of solid rocks separate, collide, an ...
Planet Earth - Topic 2 (ANSWERS)
... 1. Scientists have grouped rocks into three major families they are igneous, sedimentary and metamorphic rocks. Each can be identified by its appearance. *Type I - Igneous rock forms when hot magma or lava cools and solidifies. 3. Magma is melted rock found below the Earth’s crust, where temperature ...
... 1. Scientists have grouped rocks into three major families they are igneous, sedimentary and metamorphic rocks. Each can be identified by its appearance. *Type I - Igneous rock forms when hot magma or lava cools and solidifies. 3. Magma is melted rock found below the Earth’s crust, where temperature ...
Quiz 6
... Migmatite-A rock formed when gneiss is heated high enough so that it begins to partially melt, creating layers, or lenses, of new igneous rock that mix with layers of the relict gneiss. Protolith-The original rock from which a metamorphic rock formed. Schistosity-Foliation caused by the preferred or ...
... Migmatite-A rock formed when gneiss is heated high enough so that it begins to partially melt, creating layers, or lenses, of new igneous rock that mix with layers of the relict gneiss. Protolith-The original rock from which a metamorphic rock formed. Schistosity-Foliation caused by the preferred or ...
Section 9.1 How and where volcanoes form
... Something to ponder. How are the 3 different boundaries connected to volcanoes? What is one of the biggest reasons that we are able to observe volcanic activity? Why was learning plate tectonics important for this chapter and the coming chapters? ...
... Something to ponder. How are the 3 different boundaries connected to volcanoes? What is one of the biggest reasons that we are able to observe volcanic activity? Why was learning plate tectonics important for this chapter and the coming chapters? ...
Bathymetric Maps
... Color the plates • Lightly color each plate a different color. Remember that the left and right edges of the map are connected; color any split plates with the same color! Hold the map edges together, forming a cylinder, so that you can see this ...
... Color the plates • Lightly color each plate a different color. Remember that the left and right edges of the map are connected; color any split plates with the same color! Hold the map edges together, forming a cylinder, so that you can see this ...
Earth structure & magnetism
... • Every so often the magnetic field will reverse. • When it does, so will the minerals in the igneous rocks that form at the time. Stacked lava flows (layers) Rocks at places where new crust is forming (Sea floor spreading = stripes) ...
... • Every so often the magnetic field will reverse. • When it does, so will the minerals in the igneous rocks that form at the time. Stacked lava flows (layers) Rocks at places where new crust is forming (Sea floor spreading = stripes) ...
Chapter 3 - Plate Tectonics
... and dating continental lava flows lead to – the realization that magnetic ...
... and dating continental lava flows lead to – the realization that magnetic ...
Layers of the Earth Notes The Earth is made of 4
... The Earth's rocky outer crust solidified billions of years ago, soon after the Earth formed. ...
... The Earth's rocky outer crust solidified billions of years ago, soon after the Earth formed. ...
Chapter 20 - "Inside the Earth"
... – Three kinds of observations started scientists to wonder in the direction that allowed an explanation for Wegener’s continental drift. • All submarine earthquakes that were found and measured were found to occur in a narrow band under the crest of the Mid-Atlantic Ridge • There is a long valley t ...
... – Three kinds of observations started scientists to wonder in the direction that allowed an explanation for Wegener’s continental drift. • All submarine earthquakes that were found and measured were found to occur in a narrow band under the crest of the Mid-Atlantic Ridge • There is a long valley t ...
• Lava lamp • Large maps • Pictoral periodic tables • Some Minerals
... Rock genesis is related to plate tectonics ...
... Rock genesis is related to plate tectonics ...
Science A-43
... The shear stress due to friction builds up at the fault line until the energy buildup can overcome the friction, causing an earthquake These global-scale processes are seen on the ground as individual faults where the Earth ruptures and the two sides move past each other in earthquake-generating eve ...
... The shear stress due to friction builds up at the fault line until the energy buildup can overcome the friction, causing an earthquake These global-scale processes are seen on the ground as individual faults where the Earth ruptures and the two sides move past each other in earthquake-generating eve ...
Document
... Fine-grained volcanic ash can cause health problems in susceptible people, clog ventilation systems, cause electrical short circuits, damage crops, and wreck jet engines (e.g. the BA 747 that lost all 4 engines and dropped 4 km after encountering an ash cloud over Indonesia in 1982). ...
... Fine-grained volcanic ash can cause health problems in susceptible people, clog ventilation systems, cause electrical short circuits, damage crops, and wreck jet engines (e.g. the BA 747 that lost all 4 engines and dropped 4 km after encountering an ash cloud over Indonesia in 1982). ...
The Fate of Subducted Oceanic Crust and the Sources of Intraplate
... circular arguments, such as a perceived necessity to buffer the depleted mantle with plume residues (e.g. Morgan and Morgan 1999), which appear to make the plume model indispensable. However, with objective evaluation it becomes apparent that the logic used to mandate the plume model can not be just ...
... circular arguments, such as a perceived necessity to buffer the depleted mantle with plume residues (e.g. Morgan and Morgan 1999), which appear to make the plume model indispensable. However, with objective evaluation it becomes apparent that the logic used to mandate the plume model can not be just ...
Words of the Day
... 92). Trench: A steep sided valley in the ocean formed from a subduction boundary. ...
... 92). Trench: A steep sided valley in the ocean formed from a subduction boundary. ...
Observing Convection Currents - Science
... water. A tectonic plate is a piece of the Earth's crust (or lithosphere). The surface of the Earth consists of seven major tectonic plates and many more minor ones. Because the earth is http://img.sparknotes.com/content/testprep/bookimgs/ extremely hot inside, a act/0016/convection_currents.gif curr ...
... water. A tectonic plate is a piece of the Earth's crust (or lithosphere). The surface of the Earth consists of seven major tectonic plates and many more minor ones. Because the earth is http://img.sparknotes.com/content/testprep/bookimgs/ extremely hot inside, a act/0016/convection_currents.gif curr ...
Handout 2
... 2. According to the law of gravitation, the force of attraction between two objects depends on the mass of the objects and the _________________ between them. 3. The lower boundary of Earth’s crust is called the ______________. 4. The solid, plastic layer of the mantle is called the ________________ ...
... 2. According to the law of gravitation, the force of attraction between two objects depends on the mass of the objects and the _________________ between them. 3. The lower boundary of Earth’s crust is called the ______________. 4. The solid, plastic layer of the mantle is called the ________________ ...
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.