Chapter 16 The Dynamic Ocean
... currents of ocean H2O that results from density differences in the H20 masses ▶ Flow much more slowly than surface currents ▶ Seawater density if affected by salinity and temperature differences ...
... currents of ocean H2O that results from density differences in the H20 masses ▶ Flow much more slowly than surface currents ▶ Seawater density if affected by salinity and temperature differences ...
Name
... melt in spring and summer than accumulates in winter. Over many years this ice piles up to form continental glaciers that can exceed 2 kilometers in thickness. Glacial ice has a density of about 0.9 g/cm3, just below that of water, and about 1/3 that of granite. What would be the effect of a 2000 me ...
... melt in spring and summer than accumulates in winter. Over many years this ice piles up to form continental glaciers that can exceed 2 kilometers in thickness. Glacial ice has a density of about 0.9 g/cm3, just below that of water, and about 1/3 that of granite. What would be the effect of a 2000 me ...
The convergence of the Nazca and South American Plates has
... • The slow movement of hot, softened mantle lies below rigid plates. • The hot, softened rock in the mantle moves in a circular manner in a convection flow – the heated, molten rock rises to the surface, spreads, and begins to cool, and then sinks back down to be reheated and rises again. ...
... • The slow movement of hot, softened mantle lies below rigid plates. • The hot, softened rock in the mantle moves in a circular manner in a convection flow – the heated, molten rock rises to the surface, spreads, and begins to cool, and then sinks back down to be reheated and rises again. ...
Plate Boundary Notes
... • New ocean crust forms at rift valleys, where two plates diverge, and builds and forms huge underwater mountains, called mid-ocean ridges. • For the last 250 million years, the Atlantic ocean has been growing wider as new crust is added to Sea-floor spreading. • Example: Eurasian and North America ...
... • New ocean crust forms at rift valleys, where two plates diverge, and builds and forms huge underwater mountains, called mid-ocean ridges. • For the last 250 million years, the Atlantic ocean has been growing wider as new crust is added to Sea-floor spreading. • Example: Eurasian and North America ...
Sverdrup Study Guide Ch02 PDF
... - Spreading rates can now be measured directly by satellite using the Global Positioning System (GPS) discussed in chapter 1. - Some forty or so areas of spatially fixed, long-term volcanic activity have been identified on the Earth, and are called hot spots (fig. 2.33). - Hot spot magmas change com ...
... - Spreading rates can now be measured directly by satellite using the Global Positioning System (GPS) discussed in chapter 1. - Some forty or so areas of spatially fixed, long-term volcanic activity have been identified on the Earth, and are called hot spots (fig. 2.33). - Hot spot magmas change com ...
EGU2017-2525
... Zoning of the Arctic territories has been conducted taking into account the Earth’s crust types, age of consolidated basement, and features of geological structure of the sedimentary cover. Developed legend for the zoning scheme incorporates five main groups of elements: continental and oceanic crus ...
... Zoning of the Arctic territories has been conducted taking into account the Earth’s crust types, age of consolidated basement, and features of geological structure of the sedimentary cover. Developed legend for the zoning scheme incorporates five main groups of elements: continental and oceanic crus ...
Deep-Sea Ecosystems: Pristine Biodiversity Reservoir and
... THE DEEP SEA is the largest ecosystem on Earth, with approximately 50% of the surface of the Earth covered by ocean more than 3,000 metres deep. It supports one of the largest reservoirs of biodiversity on the planet, but remains one of the least studied ecosystems because of its remoteness and the ...
... THE DEEP SEA is the largest ecosystem on Earth, with approximately 50% of the surface of the Earth covered by ocean more than 3,000 metres deep. It supports one of the largest reservoirs of biodiversity on the planet, but remains one of the least studied ecosystems because of its remoteness and the ...
Inside the Earth
... Identify each layer as solid, liquid or viscous (having relatively high resistance to flow- think of pancake syrup that has been chilled in the refrigerator) As you move from the outside in, what pattern do you notice? ...
... Identify each layer as solid, liquid or viscous (having relatively high resistance to flow- think of pancake syrup that has been chilled in the refrigerator) As you move from the outside in, what pattern do you notice? ...
Aquatic Biomes, Part I – Marine Biomes
... Productivity - Roughly half of the world’s primary productivity occurs in the oceans Diversity - Biologically, oceans are species-rich Food supply - Oceans are a critical food source for much of the human population ...
... Productivity - Roughly half of the world’s primary productivity occurs in the oceans Diversity - Biologically, oceans are species-rich Food supply - Oceans are a critical food source for much of the human population ...
Chapter 2
... imply that ageing of the ocean lithosphere is accompanied by a decline in potential energy. The geoid anomaly predicted for the cooling half-space model (as well as the thermal plate model) for young ocean lithosphere is about d (∆No ) /d t = −0.15 m/Ma, which compares favourably with the observed g ...
... imply that ageing of the ocean lithosphere is accompanied by a decline in potential energy. The geoid anomaly predicted for the cooling half-space model (as well as the thermal plate model) for young ocean lithosphere is about d (∆No ) /d t = −0.15 m/Ma, which compares favourably with the observed g ...
Plate Tectonics Unit - Spring
... Plate Boundaries = the places where tectonic plates fit together (at the edges). There are three types of boundaries that are named for how the plates interact with one another. ...
... Plate Boundaries = the places where tectonic plates fit together (at the edges). There are three types of boundaries that are named for how the plates interact with one another. ...
Lab: Exploring Patterns in Regional Seismicity
... Geomorphology - the study of the physical features of the surface of the earth and their relation to its geological structures Background: Plate Tectonics The lithosphere can be divided into many large plates, which are moved around the surface of the planet over time. During this motion, plates int ...
... Geomorphology - the study of the physical features of the surface of the earth and their relation to its geological structures Background: Plate Tectonics The lithosphere can be divided into many large plates, which are moved around the surface of the planet over time. During this motion, plates int ...
Life on the seabed - Department of Conservation
... Finding out exactly what’s living on the seabed can be a technically challenging and expensive exercise, requiring deep sea sampling and video surveys. As an alternative, this study ‘recycled’ existing data to see whether it could accurately predict the diversity of seabed life. Invertebrates like k ...
... Finding out exactly what’s living on the seabed can be a technically challenging and expensive exercise, requiring deep sea sampling and video surveys. As an alternative, this study ‘recycled’ existing data to see whether it could accurately predict the diversity of seabed life. Invertebrates like k ...
4.1 Gondwana – Further questions Q1. Bk Ch4 S4.1 FQ1 a What do
... spreading zones. Explain how mid-ocean ridges and spreading zones are formed. Outline the relationship between these two different features. ...
... spreading zones. Explain how mid-ocean ridges and spreading zones are formed. Outline the relationship between these two different features. ...
File
... refraction of P-waves through the core identified the solid inner core. 7. What is the evidence that Earth’s inner core is solid? The reflection and refraction of P-waves through the core identified the solid inner core. 8. What is the evidence that Earth’s outer core is liquid? S-waves cannot trave ...
... refraction of P-waves through the core identified the solid inner core. 7. What is the evidence that Earth’s inner core is solid? The reflection and refraction of P-waves through the core identified the solid inner core. 8. What is the evidence that Earth’s outer core is liquid? S-waves cannot trave ...
Name Plate Tectonics Introduction Go to the following site: http
... 12. Complete the Plates & Boundaries Challenge. Write down your score on the line below (I will totally believe your score and not count it against your grade! Promise) SECTION: Slip, Slide & Collide (click “see what happens at different plate boundaries”) Convergent Boundaries: 1. If oceanic and c ...
... 12. Complete the Plates & Boundaries Challenge. Write down your score on the line below (I will totally believe your score and not count it against your grade! Promise) SECTION: Slip, Slide & Collide (click “see what happens at different plate boundaries”) Convergent Boundaries: 1. If oceanic and c ...
Lesson 2 plates
... If oceanic crust is pulling apart from oceanic crust then new crust will made. This means that in some places the sea floor is actually growing! This is a process called sea floor spreading. This is happening along the midAtlantic ridge between the UK and America too. Small chains of islands are cre ...
... If oceanic crust is pulling apart from oceanic crust then new crust will made. This means that in some places the sea floor is actually growing! This is a process called sea floor spreading. This is happening along the midAtlantic ridge between the UK and America too. Small chains of islands are cre ...
Plate tectonics powerpoint presentation File
... If oceanic crust is pulling apart from oceanic crust then new crust will made. This means that in some places the sea floor is actually growing! This is a process called sea floor spreading. This is happening along the midAtlantic ridge between the UK and America too. Small chains of islands are cre ...
... If oceanic crust is pulling apart from oceanic crust then new crust will made. This means that in some places the sea floor is actually growing! This is a process called sea floor spreading. This is happening along the midAtlantic ridge between the UK and America too. Small chains of islands are cre ...
Plate Tectonics
... If oceanic crust is pulling apart from oceanic crust then new crust will made. This means that in some places the sea floor is actually growing! This is a process called sea floor spreading. This is happening along the midAtlantic ridge between the UK and America too. Small chains of islands are cre ...
... If oceanic crust is pulling apart from oceanic crust then new crust will made. This means that in some places the sea floor is actually growing! This is a process called sea floor spreading. This is happening along the midAtlantic ridge between the UK and America too. Small chains of islands are cre ...
Tectonic Map of the World
... If oceanic crust is pulling apart from oceanic crust then new crust will made. This means that in some places the sea floor is actually growing! This is a process called sea floor spreading. This is happening along the midAtlantic ridge between the UK and America too. Small chains of islands are cre ...
... If oceanic crust is pulling apart from oceanic crust then new crust will made. This means that in some places the sea floor is actually growing! This is a process called sea floor spreading. This is happening along the midAtlantic ridge between the UK and America too. Small chains of islands are cre ...
SGES 1302 Lecture4
... Plate tectonics is a theory of geology that has been developed to explain the observed evidence for large scale motions of the Earth's lithosphere. The theory encompassed and superseded the older theory of continental drift from the first half of the 20th century and the concept of seafloor spreadin ...
... Plate tectonics is a theory of geology that has been developed to explain the observed evidence for large scale motions of the Earth's lithosphere. The theory encompassed and superseded the older theory of continental drift from the first half of the 20th century and the concept of seafloor spreadin ...
Dynamic Earth Interactive Web Quest
... plates made of oceanic crust pull apart, a crack in the ocean floor appears. Magma then oozes up from the mantle to fill in the space between the plates, forming a raised ridge called a mid-ocean ridge. The magma also spreads outward, forming new ocean floor and new oceanic crust. ...
... plates made of oceanic crust pull apart, a crack in the ocean floor appears. Magma then oozes up from the mantle to fill in the space between the plates, forming a raised ridge called a mid-ocean ridge. The magma also spreads outward, forming new ocean floor and new oceanic crust. ...
File
... 7. Notice that small bits of cookies are pressing together. This models that the land is under stress where plates pass beside each other. 8. Draw and label your model below. Include these labels: stress (where earthquakes would be taking place) and continental plates. Use arrows to show the directi ...
... 7. Notice that small bits of cookies are pressing together. This models that the land is under stress where plates pass beside each other. 8. Draw and label your model below. Include these labels: stress (where earthquakes would be taking place) and continental plates. Use arrows to show the directi ...
Abyssal plain
An abyssal plain is an underwater plain on the deep ocean floor, usually found at depths between 3000 and 6000 m. Lying generally between the foot of a continental rise and a mid-ocean ridge, abyssal plains cover more than 50% of the Earth’s surface. They are among the flattest, smoothest and least explored regions on Earth. Abyssal plains are key geologic elements of oceanic basins (the other elements being an elevated mid-ocean ridge and flanking abyssal hills). In addition to these elements, active oceanic basins (those that are associated with a moving plate tectonic boundary) also typically include an oceanic trench and a subduction zone.Abyssal plains were not recognized as distinct physiographic features of the sea floor until the late 1940s and, until very recently, none had been studied on a systematic basis. They are poorly preserved in the sedimentary record, because they tend to be consumed by the subduction process. The creation of the abyssal plain is the end result of spreading of the seafloor (plate tectonics) and melting of the lower oceanic crust. Magma rises from above the asthenosphere (a layer of the upper mantle) and as this basaltic material reaches the surface at mid-ocean ridges it forms new oceanic crust. This is constantly pulled sideways by spreading of the seafloor. Abyssal plains result from the blanketing of an originally uneven surface of oceanic crust by fine-grained sediments, mainly clay and silt. Much of this sediment is deposited by turbidity currents that have been channelled from the continental margins along submarine canyons down into deeper water. The remainder of the sediment is composed chiefly of pelagic sediments. Metallic nodules are common in some areas of the plains, with varying concentrations of metals, including manganese, iron, nickel, cobalt, and copper. These nodules may provide a significant resource for future mining ventures.Owing in part to their vast size, abyssal plains are currently believed to be a major reservoir of biodiversity. The abyss also exerts significant influence upon ocean carbon cycling, dissolution of calcium carbonate, and atmospheric CO2 concentrations over timescales of 100–1000 years. The structure and function of abyssal ecosystems are strongly influenced by the rate of flux of food to the seafloor and the composition of the material that settles. Factors such as climate change, fishing practices, and ocean fertilization are expected to have a substantial effect on patterns of primary production in the euphotic zone. This will undoubtedly impact the flux of organic material to the abyss in a similar manner and thus have a profound effect on the structure, function and diversity of abyssal ecosystems.