Sea Floor Spreading LAB 2017
... continually been forming over millions of years at the mid-ocean ridges. Hess found that on each side of the ridge, sea floor got older as a person moved away from the ridge towards the continents. The older, denser oceanic crust eventually descends into deep trenches along the continents and is rec ...
... continually been forming over millions of years at the mid-ocean ridges. Hess found that on each side of the ridge, sea floor got older as a person moved away from the ridge towards the continents. The older, denser oceanic crust eventually descends into deep trenches along the continents and is rec ...
Chapter 5
... There are three main types of plate boundaries where stresses cause rocks to deform. What you’ll learn: • Describe types of stress that deform rock. • Relate geologic features of Earth’s surface to types of plate boundaries. ...
... There are three main types of plate boundaries where stresses cause rocks to deform. What you’ll learn: • Describe types of stress that deform rock. • Relate geologic features of Earth’s surface to types of plate boundaries. ...
File - Dengelscience
... hot and is less dense. It rises until it reaches the surface or is trapped. 2. A Volcano erupts because the dissolved gases are under pressure. When there is a crack, the gases rush out carrying magma. ...
... hot and is less dense. It rises until it reaches the surface or is trapped. 2. A Volcano erupts because the dissolved gases are under pressure. When there is a crack, the gases rush out carrying magma. ...
PLATE BOUNDARIES AND CALIFORNIA
... Long, narrow valley formed as the hanging wall of a divergent boundary slips down. Fracture in which rocks on one side of the fracture move relative to rocks on the other side. Boundary formed where plates move apart Boundary formed when two plates move sideways past each other. ...
... Long, narrow valley formed as the hanging wall of a divergent boundary slips down. Fracture in which rocks on one side of the fracture move relative to rocks on the other side. Boundary formed where plates move apart Boundary formed when two plates move sideways past each other. ...
(Atlantic) volcanic rifted margin
... Walvis Ridge and Rio Grande Rise are direct evidence of plume-related volcanism offshore coeval with formation of the South Atlantic large igneous province (LIP). Geochemical and thermal modelling studies have demonstrated an active role of a mantle plume in forming the Paraná-Etendeka flood basalts ...
... Walvis Ridge and Rio Grande Rise are direct evidence of plume-related volcanism offshore coeval with formation of the South Atlantic large igneous province (LIP). Geochemical and thermal modelling studies have demonstrated an active role of a mantle plume in forming the Paraná-Etendeka flood basalts ...
PLATE BOUNDARIES AND CALIFORNIA
... There are three main types of plate boundaries where stresses cause rocks to deform. What you’ll learn: • Describe types of stress that deform rock. • Relate geologic features of Earth’s surface to types of plate boundaries. ...
... There are three main types of plate boundaries where stresses cause rocks to deform. What you’ll learn: • Describe types of stress that deform rock. • Relate geologic features of Earth’s surface to types of plate boundaries. ...
IGNEOUS ROCKS MAGMA SEDIMENTS SEDIMENTARY ROCKS
... a. Hawaii-lava is basaltic in nature. Eruptions on these islands are calm. 2. Granitic-form from felsic magma; thick magma that does not flow easily due to high silica content. [temp. is below 800oC]. Contains high percent of aluminum, potassium, and sodium, thus rocks are less dense and light color ...
... a. Hawaii-lava is basaltic in nature. Eruptions on these islands are calm. 2. Granitic-form from felsic magma; thick magma that does not flow easily due to high silica content. [temp. is below 800oC]. Contains high percent of aluminum, potassium, and sodium, thus rocks are less dense and light color ...
Earth as a Planet
... So what are these layers actually made of? The inner core, which is smaller than the Moon, but three times as dense, is possibly made of pure iron and nickel (Figure 3). The outer core is less dense than molten iron and probably contains some lighter elements such as sulfur, carbon, or oxygen. The m ...
... So what are these layers actually made of? The inner core, which is smaller than the Moon, but three times as dense, is possibly made of pure iron and nickel (Figure 3). The outer core is less dense than molten iron and probably contains some lighter elements such as sulfur, carbon, or oxygen. The m ...
Document
... ICELAND - Part of the Mid-Atlantic Ridge - Made of Recently Erupted Basalt - Formed in past 15 million years North American plate ...
... ICELAND - Part of the Mid-Atlantic Ridge - Made of Recently Erupted Basalt - Formed in past 15 million years North American plate ...
Changes to Earths surface powerpoint
... rock is determined by how fast the rock cooled. • How fast the rock cooled is determined by how close to the surface the rock was, and how large the chamber was. • Igneous rocks can be extrusive or intrusive ...
... rock is determined by how fast the rock cooled. • How fast the rock cooled is determined by how close to the surface the rock was, and how large the chamber was. • Igneous rocks can be extrusive or intrusive ...
Section 1 - kjpederson
... 8th Grade Earth Science Chapter 7 Key Terms Section 1 1. hot spot: an area where magma from deep within the mantle melts through the crust above it. 2. island arc: a string of islands formed by the volcanoes along a deep-ocean trench. 3. lava: liquid magma that reaches the surface; also the rock for ...
... 8th Grade Earth Science Chapter 7 Key Terms Section 1 1. hot spot: an area where magma from deep within the mantle melts through the crust above it. 2. island arc: a string of islands formed by the volcanoes along a deep-ocean trench. 3. lava: liquid magma that reaches the surface; also the rock for ...
Structure of The Earth - University of Agriculture Abeokuta
... of surface material is only around 3,000 kg/m3, we must conclude that denser materials exist within Earth's core. Further evidence for the high density core comes from the study of seismology. Seismic measurements show that the core is divided into two parts, a solid inner core with a radius of ~1,2 ...
... of surface material is only around 3,000 kg/m3, we must conclude that denser materials exist within Earth's core. Further evidence for the high density core comes from the study of seismology. Seismic measurements show that the core is divided into two parts, a solid inner core with a radius of ~1,2 ...
An outline of the East African Rift Volcanism
... carbonated mantle, while the Nyamuragira lavas are products of larger degree partial melting at comparatively shallower mantle depths with a recycled crustal component. ...
... carbonated mantle, while the Nyamuragira lavas are products of larger degree partial melting at comparatively shallower mantle depths with a recycled crustal component. ...
File
... A plate carrying a continent subducts beneath another continental plate. Continental Plate B ...
... A plate carrying a continent subducts beneath another continental plate. Continental Plate B ...
File
... ____ 42. The boundary between tectonic plates that are sliding past each other horizontally ____ 43. Much denser and thicker than the crust…where magma comes from ____ 44. The theory that Earth’s lithosphere is divided into tectonic plates that move around ____ 45. This happens when two tectonic pla ...
... ____ 42. The boundary between tectonic plates that are sliding past each other horizontally ____ 43. Much denser and thicker than the crust…where magma comes from ____ 44. The theory that Earth’s lithosphere is divided into tectonic plates that move around ____ 45. This happens when two tectonic pla ...
2014 Fellow, the American Geophysical Union
... Geology and Geophysics Egbert has been named a 2014 Fellow of the American Geophysical Union (AGU). This year, 62 fellows representing less than 0.1 percent of overall membership were named for their scientific eminence, a major breakthrough, a major discovery, paradigm shifts and/or sustained scien ...
... Geology and Geophysics Egbert has been named a 2014 Fellow of the American Geophysical Union (AGU). This year, 62 fellows representing less than 0.1 percent of overall membership were named for their scientific eminence, a major breakthrough, a major discovery, paradigm shifts and/or sustained scien ...
Why is the oldest ocean crust only ~180 Ma?
... What is the hydrotectonic cycle? What are the reservoirs of water in this cycle and how does water cycle between the reservoirs? ...
... What is the hydrotectonic cycle? What are the reservoirs of water in this cycle and how does water cycle between the reservoirs? ...
Section 19.1 - CPO Science
... Today aluminum and silicon, which have low densities, are common in Earth’s crust. ...
... Today aluminum and silicon, which have low densities, are common in Earth’s crust. ...
Oceanic plate region
... Plate is diverging from the African Plate: The African Rift Valley was formed. ...
... Plate is diverging from the African Plate: The African Rift Valley was formed. ...
Volcanoes and Igneous Activity Earth
... basalt that solidifies with a glassy, ropy texture. – Pahoehoe forms when extremely hot basalt forms a skin. – With flow, the skin is rolled into ropy ridges and furrows. ...
... basalt that solidifies with a glassy, ropy texture. – Pahoehoe forms when extremely hot basalt forms a skin. – With flow, the skin is rolled into ropy ridges and furrows. ...
12.710, Spring 2014, Problem Set 5, Isostacy Isostacy is the concept
... Surprisingly, the simple relationship between extension, isostacy, and basin formation was only appreciated in the 1970's, after plate tectonics began to be accepted; this despite the fact the all of the world's petroleum resources are derived from sedimentary rocks deposited in basins formed throug ...
... Surprisingly, the simple relationship between extension, isostacy, and basin formation was only appreciated in the 1970's, after plate tectonics began to be accepted; this despite the fact the all of the world's petroleum resources are derived from sedimentary rocks deposited in basins formed throug ...
Ocean Basins - University of Washington
... can be less – where islands occur (e.g., Iceland) volcanic eruptions create new ocean crust hot basalt, thermal expansion creates elevation moves away from ridge axis in both directions Abyssal basins water depth – 4000-6000 m (only trenches are deeper) abyssal hills, include rough relief from volca ...
... can be less – where islands occur (e.g., Iceland) volcanic eruptions create new ocean crust hot basalt, thermal expansion creates elevation moves away from ridge axis in both directions Abyssal basins water depth – 4000-6000 m (only trenches are deeper) abyssal hills, include rough relief from volca ...
Lassen Volcanic National Park
... warms the sinking plate and causes the waterbearing minerals it contains decompose. The water vapor they release rises into the “wedge” of hot peridotite above the plate and causes the rock there to partially melt (Fig. 3). The resulting basalt and basaltic andesite magmas are less dense than the su ...
... warms the sinking plate and causes the waterbearing minerals it contains decompose. The water vapor they release rises into the “wedge” of hot peridotite above the plate and causes the rock there to partially melt (Fig. 3). The resulting basalt and basaltic andesite magmas are less dense than the su ...
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.