Oceanography 101 Linda Khandro, MAT Homework 2: Opening the
... The Bay of Biscay began to open at the same time as the transform fault in the Labrador Sea became a spreading axis. The rocks forming the floor of the Bay of Biscay are thus the same age as those forming the floor of the Labrador Sea. The age of the rocks in both is Late Cretaceous. ...
... The Bay of Biscay began to open at the same time as the transform fault in the Labrador Sea became a spreading axis. The rocks forming the floor of the Bay of Biscay are thus the same age as those forming the floor of the Labrador Sea. The age of the rocks in both is Late Cretaceous. ...
Exam Study Guide
... E3.1d Explain how the crystal sizes of igneous rocks indicate the rate of cooling and whether the rock is extrusive (small grained) or intrusive (large grained). E3.1e Explain how the texture (foliated, nonfoliated) of metamorphic rock can indicate whether it ahs experienced regional or contact ...
... E3.1d Explain how the crystal sizes of igneous rocks indicate the rate of cooling and whether the rock is extrusive (small grained) or intrusive (large grained). E3.1e Explain how the texture (foliated, nonfoliated) of metamorphic rock can indicate whether it ahs experienced regional or contact ...
F08 4 Igneous
... slopes between their states For rocks, we need to consider the solid-liquid changes. Adding water changes melting relationship ...
... slopes between their states For rocks, we need to consider the solid-liquid changes. Adding water changes melting relationship ...
3. Caledonian Orogenesis
... Schists with metamorphic minerals indicating high pressure and low temperature conditions. These schists were orinally fine-grained shales and medium-grained sandstones. ...
... Schists with metamorphic minerals indicating high pressure and low temperature conditions. These schists were orinally fine-grained shales and medium-grained sandstones. ...
Mining in British Columbia
... British Columbia lies in the Cordilleran Orogen (kord-(y)er-uhn or-uh-jen), a mountain belt that runs along the western edge of the Western Hemisphere continents from Alaska to Antarctica. These mountains formed over tens of millions of years as a result of tectonic collisions between the continents ...
... British Columbia lies in the Cordilleran Orogen (kord-(y)er-uhn or-uh-jen), a mountain belt that runs along the western edge of the Western Hemisphere continents from Alaska to Antarctica. These mountains formed over tens of millions of years as a result of tectonic collisions between the continents ...
Geologic History
... Types of Rocks Sedimentary Rocks: formed by gradual compression of sediments - Covers 75% of the land area - Fossils are most commonly found in sedimentary rocks Clastic rock forms from sediments that are the result of weathering and erosion ...
... Types of Rocks Sedimentary Rocks: formed by gradual compression of sediments - Covers 75% of the land area - Fossils are most commonly found in sedimentary rocks Clastic rock forms from sediments that are the result of weathering and erosion ...
GEOL-1403-McMahon
... Lithospheric Delamination in the Basin and Range Providence: lithosphere is cooler and denser than Asthenosphere breaks off and sinkshot Asthenosphere heats crust to meltingcrust is heated and thinned Extension tectonics and tensional stress production normal- block faulting ...
... Lithospheric Delamination in the Basin and Range Providence: lithosphere is cooler and denser than Asthenosphere breaks off and sinkshot Asthenosphere heats crust to meltingcrust is heated and thinned Extension tectonics and tensional stress production normal- block faulting ...
Rock cycle and Igneous rocks
... Granit is a light-colored rock with grains large enough to be visible with the unaided eye. It forms from the slow crystallization of magma below Earth’s surface. Granite is composed mainly of quartz and feldspar with minor amounts of mica, amphiboles and other minerals. This mineral composition usu ...
... Granit is a light-colored rock with grains large enough to be visible with the unaided eye. It forms from the slow crystallization of magma below Earth’s surface. Granite is composed mainly of quartz and feldspar with minor amounts of mica, amphiboles and other minerals. This mineral composition usu ...
Types of Mountains
... Alternating normal faults lead to a characteristic pattern called a “horst and graben” system. An area under tension will often have multiple mountain ranges as a result. ...
... Alternating normal faults lead to a characteristic pattern called a “horst and graben” system. An area under tension will often have multiple mountain ranges as a result. ...
earth interior - Red Hook Central Schools
... crust of the Earth rip and break apart, releasing tremendous energy in the form of seismic waves. What’s it like to be in an Earthquake? “Its like trying to stand up in an airplane during severe turbulence” ...
... crust of the Earth rip and break apart, releasing tremendous energy in the form of seismic waves. What’s it like to be in an Earthquake? “Its like trying to stand up in an airplane during severe turbulence” ...
What-do-you-know-about-rocks
... Metamorphic rocks are rocks that have changed form because of the movements of Earth’s crust. ...
... Metamorphic rocks are rocks that have changed form because of the movements of Earth’s crust. ...
Deforming the Earth`s Crust
... Plate Tectonics & Mountain Building • When tectonic plates collide, land features that start as folds and faults, can eventually become large mountain ranges • When tectonic plates undergo compression and tension, they can form mountains in several ways ...
... Plate Tectonics & Mountain Building • When tectonic plates collide, land features that start as folds and faults, can eventually become large mountain ranges • When tectonic plates undergo compression and tension, they can form mountains in several ways ...
Outstanding geologic feature of Pennsylvania—Governor Dick
... and limestones underlie the Great Valley. Beyond that, one can see Blue Mountain, which is capped by Silurian-age Tuscarora sandstone (approximately 440 million years old). Even further north are higher ridges of Pennsylvanian-age rocks (323 to 299 million years old). These rocks are part of the Ant ...
... and limestones underlie the Great Valley. Beyond that, one can see Blue Mountain, which is capped by Silurian-age Tuscarora sandstone (approximately 440 million years old). Even further north are higher ridges of Pennsylvanian-age rocks (323 to 299 million years old). These rocks are part of the Ant ...
ROCKS AND MINERALS article Homework
... 4,000 types of minerals. Every mineral has its own chemical composition and properties, such as what temperature it melts at, how hard it is, what color it is, and how lustrous (shiny) it is. Quartz is a very common mineral found in granite, sandstone, and lots of other rocks. It’s made of just two ...
... 4,000 types of minerals. Every mineral has its own chemical composition and properties, such as what temperature it melts at, how hard it is, what color it is, and how lustrous (shiny) it is. Quartz is a very common mineral found in granite, sandstone, and lots of other rocks. It’s made of just two ...
Rocks and Minerals 3 Sedimentary
... remains of once living organisms. • Coal is formed from the compression of dead plants. • Limestone is formed from the remaining shells of dead sea-life. ...
... remains of once living organisms. • Coal is formed from the compression of dead plants. • Limestone is formed from the remaining shells of dead sea-life. ...
ROCKS and how to identify them
... Earth’s surface, produces Slow cooling deep beneath the many small crystals that are Earth’s surface allows crystals not readily seen by the to grow to large size (1/8” or unaided eye. This group of more). These crystals are igneous rocks is called easily visible and distinguish EXTRUSIVE and are ty ...
... Earth’s surface, produces Slow cooling deep beneath the many small crystals that are Earth’s surface allows crystals not readily seen by the to grow to large size (1/8” or unaided eye. This group of more). These crystals are igneous rocks is called easily visible and distinguish EXTRUSIVE and are ty ...
Geology of the Kingston Area – 1.1 Billion Years of History
... deposited in huge dunes, or on tidal-flat beaches near the slowly rising oceans from 470 million years ago. ...
... deposited in huge dunes, or on tidal-flat beaches near the slowly rising oceans from 470 million years ago. ...
Types of Faulting
... Earthquakes occur when there is a sudden movement on the Earth’s crust. Most movement on the Earth’s crust takes place along plate boundaries. There are three main types of plate boundaries; they include converging (moving together), diverging (moving apart), and sliding or transform plate boundarie ...
... Earthquakes occur when there is a sudden movement on the Earth’s crust. Most movement on the Earth’s crust takes place along plate boundaries. There are three main types of plate boundaries; they include converging (moving together), diverging (moving apart), and sliding or transform plate boundarie ...
Chapter 20: Mountain Building
... I. Convergent Boundary Mountains A. Orogeny 1. processes that form all mountain ranges 2. orogenic belts occur frequently at plate boundaries B. Oceanic-Oceanic Convergence 1. Creates a subduction zone 2. The end of one plate melts 3. Magma from melted plate rises to form volcanic mountains C. Ocean ...
... I. Convergent Boundary Mountains A. Orogeny 1. processes that form all mountain ranges 2. orogenic belts occur frequently at plate boundaries B. Oceanic-Oceanic Convergence 1. Creates a subduction zone 2. The end of one plate melts 3. Magma from melted plate rises to form volcanic mountains C. Ocean ...
Elastic rebound acti..
... Step 1. Build a fence across a fault. Step 2. The plates move past each other at a given rate. The fault is locked, so the crust deforms elsatically. The fence is bent in relation to the elastic deformation of the crust. Step 3. The strain from the fault exceeds the strength of the fault and the fau ...
... Step 1. Build a fence across a fault. Step 2. The plates move past each other at a given rate. The fault is locked, so the crust deforms elsatically. The fence is bent in relation to the elastic deformation of the crust. Step 3. The strain from the fault exceeds the strength of the fault and the fau ...
Metamorphism and tectonics
... Precambrian the way we think it does today? Or is it a function of differences in geotherms prevailing at those times? Post-Eocene blueschists are also very rare or nonexistent. Can you think of a reason? ...
... Precambrian the way we think it does today? Or is it a function of differences in geotherms prevailing at those times? Post-Eocene blueschists are also very rare or nonexistent. Can you think of a reason? ...
THE ROCK CYCLE SIMPLIFIED
... crystallization of magmas and at the surface of the Earth these igneous rocks are weathered to form the clastic and precipitates of sedimentary rocks. These sedimentary rocks are progressively buried and undergo metamorphism and at high enough temperature and pressure melt to form magmas and the cyc ...
... crystallization of magmas and at the surface of the Earth these igneous rocks are weathered to form the clastic and precipitates of sedimentary rocks. These sedimentary rocks are progressively buried and undergo metamorphism and at high enough temperature and pressure melt to form magmas and the cyc ...
Algoman orogeny
The Algoman orogeny, known as the Kenoran orogeny in Canada, was an episode of mountain-building (orogeny) during the Late Archean Eon that involved repeated episodes of continental collisions, compressions and subductions. The Superior province and the Minnesota River Valley terrane collided about 2,700 to 2,500 million years ago. The collision folded the Earth's crust and produced enough heat and pressure to metamorphose the rock. Blocks were added to the Superior province along a 1,200 km (750 mi) boundary that stretches from present-day eastern South Dakota into the Lake Huron area. The Algoman orogeny brought the Archaen Eon to a close, about 2,500 million years ago; it lasted less than 100 million years and marks a major change in the development of the earth’s crust.The Canadian shield contains belts of metavolcanic and metasedimentary rocks formed by the action of metamorphism on volcanic and sedimentary rock. The areas between individual belts consist of granites or granitic gneisses that form fault zones. These two types of belts can be seen in the Wabigoon, Quetico and Wawa subprovinces; the Wabigoon and Wawa are of volcanic origin and the Quetico is of sedimentary origin. These three subprovinces lie linearly in southwestern- to northeastern-oriented belts about 140 km (90 mi) wide on the southern portion of the Superior Province.The Slave province and portions of the Nain province were also affected. Between about 2,000 and 1,700 million years ago these combined with the Sask and Wyoming cratons to form the first supercontinent, the Kenorland supercontinent.