Absolute vs. Relative Dating of Rocks
... 5. If layer H was created 5 million years ago, and layer B was formed 4 million years ago. Hypothesize an approximate date as to when the fold in layers D,C,I, and H could have occurred. 6. Name a type of rock that could have formed within the igneous intrusion (letter F). ...
... 5. If layer H was created 5 million years ago, and layer B was formed 4 million years ago. Hypothesize an approximate date as to when the fold in layers D,C,I, and H could have occurred. 6. Name a type of rock that could have formed within the igneous intrusion (letter F). ...
BOOK REVIEWS 179 background information on the Data
... serious interest in ore minerals should be without it. As a contribution to the study of ore minerals it is invaluable; a credit to the editors and to the British Museum (N.H.) who have had the far-sightedness to publish it. D. J. VAUGHAN Barker, D. S. Igneous rocks. Engelwood Cliffs, New Jersey, U. ...
... serious interest in ore minerals should be without it. As a contribution to the study of ore minerals it is invaluable; a credit to the editors and to the British Museum (N.H.) who have had the far-sightedness to publish it. D. J. VAUGHAN Barker, D. S. Igneous rocks. Engelwood Cliffs, New Jersey, U. ...
introduction
... sequence. These mafic rocks could have been emplaced through intrusion or concurrent deposition with the surrounding bedrock. Mylonitic texture is also observable indicating regional shearing. Radiometric dates show that the original metamorphism occurred at 1.7 Ga and shearing at 1.2 Ga. These comp ...
... sequence. These mafic rocks could have been emplaced through intrusion or concurrent deposition with the surrounding bedrock. Mylonitic texture is also observable indicating regional shearing. Radiometric dates show that the original metamorphism occurred at 1.7 Ga and shearing at 1.2 Ga. These comp ...
Chapter 8
... • Sedimentary Rock – Made from layers of mineral particles found in other rocks – Have been carried by weathering – Can include newly formed material, plant and animal material – Physical weathering break down rock at the Earth’s surface – Chemical weathering actually changes the chemical compositi ...
... • Sedimentary Rock – Made from layers of mineral particles found in other rocks – Have been carried by weathering – Can include newly formed material, plant and animal material – Physical weathering break down rock at the Earth’s surface – Chemical weathering actually changes the chemical compositi ...
ESS 305 Olympic National Park 2 May 2015
... The basalts of the Coast Range Terrane are thought to have been formed either (1) as seamounts or oceanic crust, on the Kula or Farallon plates, or (2) as subduction-related basalts in a basin adjacent to the continent. The basalts and associated sediments were accreted to the edge of the continent ...
... The basalts of the Coast Range Terrane are thought to have been formed either (1) as seamounts or oceanic crust, on the Kula or Farallon plates, or (2) as subduction-related basalts in a basin adjacent to the continent. The basalts and associated sediments were accreted to the edge of the continent ...
Chapter 12.1 Notes
... Ridge, a long mountain range running down the middle of the Atlantic Ocean. ...
... Ridge, a long mountain range running down the middle of the Atlantic Ocean. ...
Mountains Formed by Normal Faults Mountains Formed by Reverse
... Fault lines are great cracks in the crust. Normal Faults are caused by tensional forces. When the land moves apart at a fault line one plate drops down lower that the other. Fault Block Mountains sometimes form when many layers of the Earth's crust are moved vertically upward between two parallel fa ...
... Fault lines are great cracks in the crust. Normal Faults are caused by tensional forces. When the land moves apart at a fault line one plate drops down lower that the other. Fault Block Mountains sometimes form when many layers of the Earth's crust are moved vertically upward between two parallel fa ...
Earth 1
... a. Formed from another rock by heat and pressure. b. Usually form beneath the earth’s crust (which means they often heat up and become magma again—it’s a cycle—the Rock Cycle!) c. Fact: Both igneous and sedimentary rocks can change into metamorphic rocks. d. Characteristics: These rocks are usually ...
... a. Formed from another rock by heat and pressure. b. Usually form beneath the earth’s crust (which means they often heat up and become magma again—it’s a cycle—the Rock Cycle!) c. Fact: Both igneous and sedimentary rocks can change into metamorphic rocks. d. Characteristics: These rocks are usually ...
Metamorphic Rock
... and heat deep under the Earth’s surface. Metamorphic rocks start out as one kind of rock, and CHANGE into another type. Metamorphic rocks often contain crystals. Metamorphic rocks often have layers. ...
... and heat deep under the Earth’s surface. Metamorphic rocks start out as one kind of rock, and CHANGE into another type. Metamorphic rocks often contain crystals. Metamorphic rocks often have layers. ...
18.3 – Intrusive Activity
... batholiths, stocks,sills & dikes • Formed through mountain-building processes and oceanic-oceanic collisions • Can be exposed at Earth’s surface to uplift and erosion ...
... batholiths, stocks,sills & dikes • Formed through mountain-building processes and oceanic-oceanic collisions • Can be exposed at Earth’s surface to uplift and erosion ...
18.3 power point - Trimble County Schools
... batholiths, stocks,sills & dikes • Formed through mountain-building processes and oceanic-oceanic collisions • Can be exposed at Earth’s surface to uplift and erosion ...
... batholiths, stocks,sills & dikes • Formed through mountain-building processes and oceanic-oceanic collisions • Can be exposed at Earth’s surface to uplift and erosion ...
MCQ - tcspgnn
... limestone rock was cooled B limestone rock was heated C limestone rock was heated under high pressure D molten limestone cooled Igneous rocks rich in iron are usually found in A earthquake areas of continents B earthquake areas of oceans C volcanic areas of continents D volcanic areas of oceans ...
... limestone rock was cooled B limestone rock was heated C limestone rock was heated under high pressure D molten limestone cooled Igneous rocks rich in iron are usually found in A earthquake areas of continents B earthquake areas of oceans C volcanic areas of continents D volcanic areas of oceans ...
Activity: Classifying Igneous Rocks
... Which three (besides obsidian) have the most quartz? Which 6 are volcanic? Which 3 are plutonic? Which 3 cooled slowly beneath the surface? Which are the two most common types of igneous rocks? Which one is the Boulder Batholith made of? (recent notebook entry may help) Which one is the Columbia Pla ...
... Which three (besides obsidian) have the most quartz? Which 6 are volcanic? Which 3 are plutonic? Which 3 cooled slowly beneath the surface? Which are the two most common types of igneous rocks? Which one is the Boulder Batholith made of? (recent notebook entry may help) Which one is the Columbia Pla ...
Plate Tectonics Review
... • Ocean trench: when 2 plates of different density collide, the denser plate pulls the leading edge of the less dense plate • Continental shelf: flat areas that extend from the shoreline and drop off at the trench • Continental slope: the steep drop off from the shelf into the trench • Benioff zone: ...
... • Ocean trench: when 2 plates of different density collide, the denser plate pulls the leading edge of the less dense plate • Continental shelf: flat areas that extend from the shoreline and drop off at the trench • Continental slope: the steep drop off from the shelf into the trench • Benioff zone: ...
File
... 12. What happens to rock when stress exceeds a rock’s elastic limit? Rocks are an elastic material—they can return to their original form after the imposed stress is removed. However, when stress exceeds the rock’s elastic limit, the rock permanently loses its original form. The rock either breaks— ...
... 12. What happens to rock when stress exceeds a rock’s elastic limit? Rocks are an elastic material—they can return to their original form after the imposed stress is removed. However, when stress exceeds the rock’s elastic limit, the rock permanently loses its original form. The rock either breaks— ...
Earth Science Final Exam Study Guide
... c. continental volcanic arcs b. volcanic island arcs d. ocean trenches ...
... c. continental volcanic arcs b. volcanic island arcs d. ocean trenches ...
Lecture 8
... increased in volume through time. • Original crust was thin and mainly basalt. Weathering, erosion and igneous activity converted some of the original crust to granite to form embryonic continents. • Embryonic continents persisted on surface of earth and accreted slowly to form larger continents. ...
... increased in volume through time. • Original crust was thin and mainly basalt. Weathering, erosion and igneous activity converted some of the original crust to granite to form embryonic continents. • Embryonic continents persisted on surface of earth and accreted slowly to form larger continents. ...
Unit 2 - Todd County Schools
... Tectonic plates can include a. only asthenosphere. b. only oceanic crust. c. only continental crust. d. both oceanic and continental crust. ...
... Tectonic plates can include a. only asthenosphere. b. only oceanic crust. c. only continental crust. d. both oceanic and continental crust. ...
12.1 Evidence for Continental Drift
... - Older rocks were found farther from ridge (and in thicker layers...built up!) ...
... - Older rocks were found farther from ridge (and in thicker layers...built up!) ...
PASS MOCK MIDTERM #2 – FOR PRACTICE ONLY
... 16. The downward movement of material by gravity is known as ________________ _________________. 17. Movement will only occur if the ________________________ force is greater than the __________________ force. ...
... 16. The downward movement of material by gravity is known as ________________ _________________. 17. Movement will only occur if the ________________________ force is greater than the __________________ force. ...
TYPES OF CRUSTAL MATERIAL
... The image above shows a piece of heated magma in the process of cooling into basalt. ...
... The image above shows a piece of heated magma in the process of cooling into basalt. ...
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.