Handout
... • Because of differential melting, magma’s do not have the same composition as the source rock. • Silicic minerals tend to have a lower melting point that mafic rocks so magma’s tend to be enriched in silica compared to their source rock. • Contamination occurs when magma beneath the crust starts t ...
... • Because of differential melting, magma’s do not have the same composition as the source rock. • Silicic minerals tend to have a lower melting point that mafic rocks so magma’s tend to be enriched in silica compared to their source rock. • Contamination occurs when magma beneath the crust starts t ...
CONSTRUCTING A SEA-FLOOR SPREADING MODEL
... The lithosphere is composed of the crust and upper mantle and is broken into large pieces know as plates. The lithospheric plates, carrying both oceanic and continental rock, “float” on the plastic part of the mantle below the lithosphere. Plates move together, separate, and slide past each other cr ...
... The lithosphere is composed of the crust and upper mantle and is broken into large pieces know as plates. The lithospheric plates, carrying both oceanic and continental rock, “float” on the plastic part of the mantle below the lithosphere. Plates move together, separate, and slide past each other cr ...
Earth`s interior volc eq1
... How the Layers Formed • As earth formed, it was made of hot molten magma and intense gravity. • As rocks melted, denser materials sank to the center of the Earth and became the core. • Less dense material rose to the surface and became the crust • The middle layer is the mantle. ...
... How the Layers Formed • As earth formed, it was made of hot molten magma and intense gravity. • As rocks melted, denser materials sank to the center of the Earth and became the core. • Less dense material rose to the surface and became the crust • The middle layer is the mantle. ...
2. The youngest rocks on the ocean floor are typically located near
... C two tectonic plates sliding past one another at a transform boundary D subduction of one oceanic plate under another at a convergent boundary ...
... C two tectonic plates sliding past one another at a transform boundary D subduction of one oceanic plate under another at a convergent boundary ...
Earth`s Systems and Resources Unit Test
... to the Himalayas of today. This would still be the case if not for the process of A. erosion C. volcanism B. folding. D. metamorphism. 7. A mountain in the picture to the right showed the following change in profile over millions of years. What happened to most of the material removed from the mount ...
... to the Himalayas of today. This would still be the case if not for the process of A. erosion C. volcanism B. folding. D. metamorphism. 7. A mountain in the picture to the right showed the following change in profile over millions of years. What happened to most of the material removed from the mount ...
NAME - KCSE Online
... - The weathered and eroded rock materials are then transported and deposited over the land or in the sea / ocean by wind, water or ice. - The deposited weathered materials accumulate over time, become compacted and cemented for sedimentary rocks. (4 x 1 = 4mks) (c) (i) Changes that occur in rocks du ...
... - The weathered and eroded rock materials are then transported and deposited over the land or in the sea / ocean by wind, water or ice. - The deposited weathered materials accumulate over time, become compacted and cemented for sedimentary rocks. (4 x 1 = 4mks) (c) (i) Changes that occur in rocks du ...
8.1: Earth has several layers
... broken into many large and small slabs of rock: “tectonic plates” Fit together like jigsaw puzzle, or a cracked egg shell – may be broken but still forms a “crust” around the egg itself Most large plates include both continental crust and oceanic crust Most of the thicker continental crust ris ...
... broken into many large and small slabs of rock: “tectonic plates” Fit together like jigsaw puzzle, or a cracked egg shell – may be broken but still forms a “crust” around the egg itself Most large plates include both continental crust and oceanic crust Most of the thicker continental crust ris ...
Earth System - Rock Cycle
... b. Magma is molten rock within the earth; lava is molten rock on the earth's surface c. Magma is molten rock on the earth's surface; lava is molten rock within the earth d. Magma is cool, lava is very hot 5. Which of these is a sedimentary rock? a. Granite b. Obsidian c. Sandstone d. Quartzite ...
... b. Magma is molten rock within the earth; lava is molten rock on the earth's surface c. Magma is molten rock on the earth's surface; lava is molten rock within the earth d. Magma is cool, lava is very hot 5. Which of these is a sedimentary rock? a. Granite b. Obsidian c. Sandstone d. Quartzite ...
Rocks in the Museum - Oxford University Museum of Natural History
... The petrology displays in the Museum introduce the world of rocks and some of the important concepts that will help you understand this science. Learn more about the specimens in the displays and get to know the large touchable rocks, minerals and fossils which are also on display in the mineralogy ...
... The petrology displays in the Museum introduce the world of rocks and some of the important concepts that will help you understand this science. Learn more about the specimens in the displays and get to know the large touchable rocks, minerals and fossils which are also on display in the mineralogy ...
Chapter 6 – Igneous rock
... • Contamination occurs when magma beneath the crust starts to melt the surrounding rock. • Similarly, the composition of the magma can change when blocks of unmelted crust fall into the magma and dissolve, a process called called assimilation. • Fractional crystallization. When magma starts to cool ...
... • Contamination occurs when magma beneath the crust starts to melt the surrounding rock. • Similarly, the composition of the magma can change when blocks of unmelted crust fall into the magma and dissolve, a process called called assimilation. • Fractional crystallization. When magma starts to cool ...
along the crest of the arch, the higher members of the lower division
... division occur near Bridge of Earn, and extend beneath the estuary of the Tay and the Carse of Gowrie to near Dundee. Between Forgandenny and Bridge of Earn, the basement beds are found resting unconformably on the denuded Lower Old Red Sandstone volcanic rocks, where fragments of the latter occur i ...
... division occur near Bridge of Earn, and extend beneath the estuary of the Tay and the Carse of Gowrie to near Dundee. Between Forgandenny and Bridge of Earn, the basement beds are found resting unconformably on the denuded Lower Old Red Sandstone volcanic rocks, where fragments of the latter occur i ...
Chapter 22 Notes
... Nonsilicates compose less than 10% of the mass of the Earth's crust. They include pure elements such as gold or silver, gemstones, and ores of iron, copper, nickel and tin. Carbonates (CO3-2) such as calcium carbonate, ...
... Nonsilicates compose less than 10% of the mass of the Earth's crust. They include pure elements such as gold or silver, gemstones, and ores of iron, copper, nickel and tin. Carbonates (CO3-2) such as calcium carbonate, ...
Document
... Like a calendar extending from Earth’s formation to the present Divided into eons, eras, periods, and epochs ...
... Like a calendar extending from Earth’s formation to the present Divided into eons, eras, periods, and epochs ...
Late Paleozoic Mountain Building
... of the Appalachians in OK/AR/TX. Fold and thrust belt of Paleozoic deep water rocks thrust northward onto the N.American Craton. Flysch deposits show amazing sedimentary structures (graded beds-turbidites, and sole marks) Vertical (“thick-skinned”) block uplifts in the western US created the Ancestr ...
... of the Appalachians in OK/AR/TX. Fold and thrust belt of Paleozoic deep water rocks thrust northward onto the N.American Craton. Flysch deposits show amazing sedimentary structures (graded beds-turbidites, and sole marks) Vertical (“thick-skinned”) block uplifts in the western US created the Ancestr ...
How the Earth was Made
... 10. What is the first living organism we believe to have existed that provided the atmosphere ...
... 10. What is the first living organism we believe to have existed that provided the atmosphere ...
What Forces Change & Shape Our Planet?
... magnetic field generated by rocks on the floor of the Pacific Ocean. The volcanic rocks which make up the sea floor have magnetization because, as they cool, magnetic minerals within the rock align to the Earth's magnetic field ...
... magnetic field generated by rocks on the floor of the Pacific Ocean. The volcanic rocks which make up the sea floor have magnetization because, as they cool, magnetic minerals within the rock align to the Earth's magnetic field ...
Ch. 14-Life History Lecture #1
... V. The Age of a Fossil B. Radiometric Dating 1. Determination of how many of the original atoms are left in the rock. a. Atoms decay at a steady rate 2. Half-life- Time needed for ½ the atoms to decay a. If the fossil’s half-life is 2 million years, when ½ of its atoms are gone it will be 2 million ...
... V. The Age of a Fossil B. Radiometric Dating 1. Determination of how many of the original atoms are left in the rock. a. Atoms decay at a steady rate 2. Half-life- Time needed for ½ the atoms to decay a. If the fossil’s half-life is 2 million years, when ½ of its atoms are gone it will be 2 million ...
Ch._5_IGNEOUS_ROCKS
... • Composed of roughly equal amounts of dark- and lightcolored minerals so they tend to have a “salt and pepper” color. Little to no quartz, no olivine, little pyroxene present. Amphibole, plagioclase feldspar, and biotite are common. Quartz and some alkali feldspar may be present too, in lesser amou ...
... • Composed of roughly equal amounts of dark- and lightcolored minerals so they tend to have a “salt and pepper” color. Little to no quartz, no olivine, little pyroxene present. Amphibole, plagioclase feldspar, and biotite are common. Quartz and some alkali feldspar may be present too, in lesser amou ...
Date: Block
... S6E5.d: Describe processes that change rocks and the surface of the Earth. S6E5.e: Recognize that lithospheric plates constantly move and cause major geological events on the Earth’s surface. S6E5.f: Explain the effects of physical processes (plate tectonics) on geological features including oceans. ...
... S6E5.d: Describe processes that change rocks and the surface of the Earth. S6E5.e: Recognize that lithospheric plates constantly move and cause major geological events on the Earth’s surface. S6E5.f: Explain the effects of physical processes (plate tectonics) on geological features including oceans. ...
Plate Tectonics
... Paleomagnetism = As magma cools, the iron rich minerals align themselves with the Earth’s magnetic field and point north. However, some rocks have magnetic orientations that point south. HMMMMMMM……. (What does this mean?????) ...
... Paleomagnetism = As magma cools, the iron rich minerals align themselves with the Earth’s magnetic field and point north. However, some rocks have magnetic orientations that point south. HMMMMMMM……. (What does this mean?????) ...