Oceanic Crust
... • The data on the ages of seafloor sediment confirmed what the seafloor spreading ...
... • The data on the ages of seafloor sediment confirmed what the seafloor spreading ...
Exploring the Geosphere and its Processes Name__________________________________
... Under the Other? ...
... Under the Other? ...
Chapter 2.pmd
... changes to another type under certain conditions in a cyclic manner. This process of transformation of the rock from one to another is known as the rock cycle. You have already learnt when the molten magma cools; it solidifies to become igneous rock. These igneous rocks are broken down into small pa ...
... changes to another type under certain conditions in a cyclic manner. This process of transformation of the rock from one to another is known as the rock cycle. You have already learnt when the molten magma cools; it solidifies to become igneous rock. These igneous rocks are broken down into small pa ...
Rocks ISM 22 2014 - AlmaMiddleSchoolScience
... Minerals precipitate out of solution to cement particles together. ...
... Minerals precipitate out of solution to cement particles together. ...
Name: : Earth Science Mr. Herman Exeter SHS Chapter 10.3
... Dikes are tabular-shaped intrusive igneous features that cut across preexisting rock layers. Many dikes form when magma from a large magma chamber invades fractures in the surrounding rocks. Batholiths Batholiths are large masses of igneous rock that formed when magma intruded at depth, became cry ...
... Dikes are tabular-shaped intrusive igneous features that cut across preexisting rock layers. Many dikes form when magma from a large magma chamber invades fractures in the surrounding rocks. Batholiths Batholiths are large masses of igneous rock that formed when magma intruded at depth, became cry ...
Rocks - TeacherWeb
... • Law of Superposition: Top layer is the youngest in undisturbed layers of rocks • Strata/Stratified/Stratification: Layer of rocks • Fossils: Remain or trace of living thing • Index Fossil: Fossil remains of organism that lived a very brief time – often found in only one layer of rock • Mass Extinc ...
... • Law of Superposition: Top layer is the youngest in undisturbed layers of rocks • Strata/Stratified/Stratification: Layer of rocks • Fossils: Remain or trace of living thing • Index Fossil: Fossil remains of organism that lived a very brief time – often found in only one layer of rock • Mass Extinc ...
Ch. 10 Section 3 Power Point
... – EX: Geologic evidence shows that ice once covered most of Earth’s continental surfaces. As continents began to drift around the globe, however, global temperatures changed and much of the ice sheet melted. 2. As continents rift or as mountains form, populations of organisms are separated. When pop ...
... – EX: Geologic evidence shows that ice once covered most of Earth’s continental surfaces. As continents began to drift around the globe, however, global temperatures changed and much of the ice sheet melted. 2. As continents rift or as mountains form, populations of organisms are separated. When pop ...
plate_tectonics
... b) Which type of crust has a higher composition of silica? ______________________ c) Which type of crust has a higher composition of iron? ______________________ d) Which type of crust is thicker? ______________________ ...
... b) Which type of crust has a higher composition of silica? ______________________ c) Which type of crust has a higher composition of iron? ______________________ d) Which type of crust is thicker? ______________________ ...
SUPERPUZZLE
... the Arctic. It means lands bordering the northern oceans, so dubbed for the supercontinent’s Arcticfringing components. But some researchers prefer to call it Columbia after the Columbia region of North America’s Pacific Northwest. Whatever its moniker, Nuna/Columbia is an exercise in trying to get ...
... the Arctic. It means lands bordering the northern oceans, so dubbed for the supercontinent’s Arcticfringing components. But some researchers prefer to call it Columbia after the Columbia region of North America’s Pacific Northwest. Whatever its moniker, Nuna/Columbia is an exercise in trying to get ...
Sea floor spreading= the process by which new oceanic crust is
... We all live on the Earth, but most of us don’t care to learn about it. It is an amazing planet, constantly moving through space. But, did you know that it is also changing on itself? The crust of the earth is divided into different “sections” called plates. There are continental crust and oceanic cr ...
... We all live on the Earth, but most of us don’t care to learn about it. It is an amazing planet, constantly moving through space. But, did you know that it is also changing on itself? The crust of the earth is divided into different “sections” called plates. There are continental crust and oceanic cr ...
an arc ankaramite occurrence in central mexico
... - By a primitive magma, suggested by high MgO, Cr, and Ni values, and ferromagnesian dominated fractionation. High MgO lavas (MgO > 9 wt%) ranging in composition from basaltic to low-Si dacite occur in simple and complex arcs of the Circum-Pacific region. The origin of these rocks has been interpret ...
... - By a primitive magma, suggested by high MgO, Cr, and Ni values, and ferromagnesian dominated fractionation. High MgO lavas (MgO > 9 wt%) ranging in composition from basaltic to low-Si dacite occur in simple and complex arcs of the Circum-Pacific region. The origin of these rocks has been interpret ...
Field Geological Observations around Rhein Graben in Germany
... In the studied area we are tried to compare the tectonic event that affected during the different geological age around the upper Rhein Graben with the structural elements that was delineated in the area and which are the consequence of these tectonic events. The folds and reverse faults and thrust ...
... In the studied area we are tried to compare the tectonic event that affected during the different geological age around the upper Rhein Graben with the structural elements that was delineated in the area and which are the consequence of these tectonic events. The folds and reverse faults and thrust ...
Rocks Section 4 Formation of Metamorphic Rocks, continued
... • Explain the difference between regional and contact metamorphism. • Distinguish between foliated and nonfoliated metamorphic rocks, and give an example of each. ...
... • Explain the difference between regional and contact metamorphism. • Distinguish between foliated and nonfoliated metamorphic rocks, and give an example of each. ...
Recommendation of a Strategy - University of South Alabama
... before present), which means that as much as 15 miles of material has been eroded since that time to expose these rocks on the surface. The rocks in each belt are folded and suffered several episodes of folding. Small and early folds tend to be isoclinal, while the later and larger folds are more op ...
... before present), which means that as much as 15 miles of material has been eroded since that time to expose these rocks on the surface. The rocks in each belt are folded and suffered several episodes of folding. Small and early folds tend to be isoclinal, while the later and larger folds are more op ...
A real rift in the midcontinent - Carol A. Stein
... tinental breakup was not easy: Most of the Midcontinent Rift to similarly dense bodrocks that tell the story are now buried ies nearby in the North American craton, beneath younger sediments or have been including some to the southeast known subducted into Earth’s mantle. So Stein as the Fort Wayne ...
... tinental breakup was not easy: Most of the Midcontinent Rift to similarly dense bodrocks that tell the story are now buried ies nearby in the North American craton, beneath younger sediments or have been including some to the southeast known subducted into Earth’s mantle. So Stein as the Fort Wayne ...
Metamorphism and Metamorphic Rocks Metamorphism
... Regional Metamorphism • Because the tectonic forces required to bury, metamorphose, and reexhume entire regions are slow, • most regionally metamorphosed terranes are old (>500MY) and • most Precambrian (>500MY) terranes are metamorphosed. ...
... Regional Metamorphism • Because the tectonic forces required to bury, metamorphose, and reexhume entire regions are slow, • most regionally metamorphosed terranes are old (>500MY) and • most Precambrian (>500MY) terranes are metamorphosed. ...
Name: Pd
... 10. Compaction & cementation of sediments forms SEDIMENTARY rocks. 11. Subjecting sedimentary rocks to extreme heat & pressure forms METAMORPHIC rocks. 12. Solidification (COOLING AND CRYSTALLIZING) of molten materials forms IGNEOUS rocks. 13. Deposition and burial of sediments forms ...
... 10. Compaction & cementation of sediments forms SEDIMENTARY rocks. 11. Subjecting sedimentary rocks to extreme heat & pressure forms METAMORPHIC rocks. 12. Solidification (COOLING AND CRYSTALLIZING) of molten materials forms IGNEOUS rocks. 13. Deposition and burial of sediments forms ...
Work Package 3 Drifting Apart Story
... where it disappeared down into the trench and was consumed. This theory provided an explanation to the theory of continental drift proposed by Alfred Wegener. It also explained why sediments on the ocean floor were very young. The oldest marine sedimentary rocks are 3 billion years old, but the olde ...
... where it disappeared down into the trench and was consumed. This theory provided an explanation to the theory of continental drift proposed by Alfred Wegener. It also explained why sediments on the ocean floor were very young. The oldest marine sedimentary rocks are 3 billion years old, but the olde ...
50 PLATE TECTONICS I. Introduction A. General 1. The theory of
... Basic Model - Based on early work by Wegner, more recent mapping of seafloor, magnetic surveys of earth's magnetic field, and observation of earth's seismic activity or ...
... Basic Model - Based on early work by Wegner, more recent mapping of seafloor, magnetic surveys of earth's magnetic field, and observation of earth's seismic activity or ...
THE ROCK CYCLE SIMPLIFIED
... slowly resulting in larger grains of minerals whereas those that crystallize on or above the surface cool quickly resulting in fine grain size or if quenched resulting in glass. There are different names for igneous rocks based on whether it is intrusive or volcanic and its chemical composition whic ...
... slowly resulting in larger grains of minerals whereas those that crystallize on or above the surface cool quickly resulting in fine grain size or if quenched resulting in glass. There are different names for igneous rocks based on whether it is intrusive or volcanic and its chemical composition whic ...
The Mineral Newsletter - Northern Virginia Mineral Club
... As a landform, Sugarloaf is actually a ridge, with the “mountain” at its high point. It lies in the higher portion of the Piedmont geologic province, to the east of the basin at the foot of Catoctin Mountain (fig. 1). Like most landforms in the mid-Atlantic region, the ridge runs from southwest to n ...
... As a landform, Sugarloaf is actually a ridge, with the “mountain” at its high point. It lies in the higher portion of the Piedmont geologic province, to the east of the basin at the foot of Catoctin Mountain (fig. 1). Like most landforms in the mid-Atlantic region, the ridge runs from southwest to n ...
PNW Tectonic Block Model
... arc (red triangles) erupts along the trailing edge of Oregon block in a region of crustal extension. Orange areas, representing young volcanic rocks erupted in the last 2 million years, are more voluminous south of Mt. Rainier, when compared to the northern arc, where block motion compresses the vol ...
... arc (red triangles) erupts along the trailing edge of Oregon block in a region of crustal extension. Orange areas, representing young volcanic rocks erupted in the last 2 million years, are more voluminous south of Mt. Rainier, when compared to the northern arc, where block motion compresses the vol ...
Exam 1 Study Guide - Napa Valley College
... What are lahars and where might they occur on the west coast of the U.S.? When and how did Mount St. Helens explosively erupt? Why? What tectonic process generated the magma for Mount St. Helens? Potential Essay Questions 1) Draw the rock cycle, including 5 boxes representing the materials of the Ea ...
... What are lahars and where might they occur on the west coast of the U.S.? When and how did Mount St. Helens explosively erupt? Why? What tectonic process generated the magma for Mount St. Helens? Potential Essay Questions 1) Draw the rock cycle, including 5 boxes representing the materials of the Ea ...
Adirondacks - Old Rocks, New Mountains
... Supercontinent breaks up 500 Million Years Ago – Warm shallow sea, Postdam Sandstone 60 to 15 Million Years Ago – Adirondacks begin to rise 1.6 Million Years Ago – Ice Ages begin ...
... Supercontinent breaks up 500 Million Years Ago – Warm shallow sea, Postdam Sandstone 60 to 15 Million Years Ago – Adirondacks begin to rise 1.6 Million Years Ago – Ice Ages begin ...
Great Lakes tectonic zone
The Great Lakes tectonic zone is bounded by South Dakota at its tip and heads northeast to south of Duluth, Minnesota, then heads east through northern Wisconsin, Marquette, Michigan, and then trends more northeasterly to skim the northern-most shores of lakes Michigan and Huron before ending in the Sudbury, Ontario, Canada, area.During the Late Archean Era the Algoman orogeny added landmass to the Superior province by volcanic activity and continental collision along a boundary that stretches from present-day South Dakota, U.S., into the Lake Huron region near Sudbury, Ontario, Canada.This crustal boundary is the Great Lakes tectonic zone. It is 1,400 km (870 mi) long, and separates the older Archean gneissic terrane to the south from younger Late Archean greenstone-granite terrane to the north.The zone is characterized by active compression during the Algoman orogeny (about 2,700 million years ago), a pulling-apart (extensional) tectonics (2,450 to 2,100 million years ago), a second compression during the Penokean orogeny (1,900 to 1,850 million years ago), a second extension during Middle Proterozoic time (1,600 million years ago) and minor reactivation during Phanerozoic time (the past 500 million years).Collision began along the Great Lakes tectonic zone (GLTZ) with the Algoman mountain-building event and continued for tens of millions of years. During the formation of the GLTZ, the gneissic Minnesota River Valley subprovince was thrust up onto the Superior province's edge as it consumed the Superior province's oceanic crust. Fragmentation of the Kenorland supercontinent began 2,450 million years ago and was completed by 2,100 million years ago. The Wyoming province is the continental landmass that is hypothesized to have rifted away from the southern Superior province portion of Kenorland, before moving rapidly west and docking with the Laurentia supercontinent 1,850 to 1,715 million years ago. Sedimentation from the GLTZ-rifting environment continued into the Penokean orogeny, which is the next major tectonic event in the Great Lakes region. Several earthquakes have been documented in Minnesota, Michigan's Upper Peninsula and Sudbury in the last 120 years along the GLTZ.