Boundary Waters

The volcanoes in the north-south trending cascade province evolved through subduction, addition of exotic terranes, and oblique plate movements. The North American plate edge was located farther east during the Mesozoic era. However subduction created microcontinents and microplates which shifted the plate edge westward. The first cascade volcanoes erupted 42 million years ago (Ma) forming the older western cascades. It was orientated northwest but rotated clockwise to become the north-south that

Alfred Wegener’s theory about the continents moving was continental drift. He based his argument over the observation the many of the coastlines on opposite sides of the ocean fit together. This observation and the idea that continents had once been joined, had been made previously. Abraham Ortelius a Flemish mapmaker from and geographer in the 1500s Pointed out that the coasts of the Americas and Europe and Africa matched and this suggested they had been torn apart from each other. Alfred also noticed

There are many similarities and differences between continental drift, seafloor spreading and plate tectonics. All three of these theories have yet to be proved correct. But the evidence is sound so therefore it is regarded as the truth. Plate tectonics is a more recent and detailed theory than continental drift. Seafloor spreading is caused mostly because of what occurs in the other two theories. All three theories work together to help us understand the Earth. The three theories all have many

forming the seven continents we have today. It shows how the continents have shifted position on Earth’s surface. Continental drift supports the theory of plate tectonics because the plate boundaries are where each of the continents split apart. For example, where South America broke off of Africa, there is a plate boundary that has moved around across the surface of the Earth. This is why

A magnet is anything with a magnetic field. Magnets attract ferrous objects like pieces of steel, iron, nickel and cobalt. They slightly attract liquid oxygen and other materials and they slightly repel water, carbon and boron. Magnets are made from a mineral called magnetite, one of earths rare minerals. Magnetite is a dark grey or black color and when in sunlight, it can have a tint of brown. Magnetite can be found in large amounts by beaches or shores. It is also known as lodestone. Magnetite

INTRODUCTION The New England Fold Belt (NEFB) of eastern Australia is composed of variably deformed terranes, going in age from Early Palaeozoic to Late Triassic. These different terranes are for the most part understood to reflect an alternate tectonic component, or different orogenic events. However, is mostly believed to have developed within an extensively convergent plate margin setting (Day et al., 1978, 1983; Henderson, 1980; Fergusson et al. 1988). Exposures that reveal the complete subduction

Dr. Jackie Langille of the department of Environmental Studies at UNC-Asheville spoke today on the possibility of the formation of a new fault boundary between the Pacific and North American Tectonic plates. Currently, the San Andreas Fault is considered the primary location of fault slip, the movement of two plates past each other, between these two plates, however, Langille believes that the amount of fault slip occurring there may be decreasing as tectonic activity increases further inland. When

Alaskan Way Viaduct The Alaskan Way Viaduct is going to collapse eventually because of an earthquake. The way an earthquake occurs is because each layer( Core, Condential crust, Oceanic crust, Mantle, Athinothphre, Lithosphere, Mesosphere, Tectonic plates, Outer core, Inner core) each has different density like in the density column. The density lab was where we poured 5 different liquid that each have different densities into a test tube, each liquid stacked on top of each other. In the lab we

Australia is a very different continent. It is different due to the fact that it has many different landforms. Some of them can include mountains, deserts, water, and plains. That is only a couple of landforms though. Australia is a very unique continent to pick since it has lots of different landforms. One of the landforms in Australia are mountains. There are many mountain ranges. For example, the Great Dividing Range stretches from Northeast Australia to the east. These mountain ranges were

MM4TTF: Introduction to Turbulence and Turbulent Flows Case Study 1: Turbulent Boundary Layer Structure Turbulent coherent structures are flow patterns that can be distinguished from each other, as opposed to motions such as eddies which are subject to the phenomenon of superpositioning. Several of these occur in the near-wall region: ‘Low speed streaks’ refer to the regions of relatively slow flow spaced out in a pronounced manner. They generally occur ‘between the legs of hairpin vortices, where