of natural processes that lead to the formation and transformation of igneous‚ sedimentary‚ and metamorphic rocks. The rock cycle shows that each type of rock can change in a certain way to form another. The driving force of the rock cycle is plate tectonics. The transition to igneous is when rocks are pushed deep under the earth’s surface and may melt into magma‚ if there is no condition for the magma to stay in a liquid state‚ it will cool and solidify into an igneous rock. The three main types
Premium Plate tectonics Convergent boundary
Introduction The Caledonian orogeny happened during the late Silurian to early Devonian periods. This was due to the westward subduction of Baltican plate beneath the Laurentian margin. The continent to continent orogeny resulted in a over thickened crust. During the Palezoic orogeny several different processes were at work simultaneously‚ which included erosion‚ plate divergence‚ gravity driven collapse of the orogenic wedge‚ and viscous flow of the lower crust. The double set of extensional shear zones
Premium Plate tectonics
Earthquakes and Logarithms Earthquakes are responsible for a wast majority of natural hazards on our planet. This natural geological phenomena are almost impossible to predict‚ and they occur usually in zones of the planet that are prone to movement in the uppermost crust of the earth. Certain areas are more likely to experience earthquakes‚ and also the aftermath of the earthquakes can be just as destructive or sometimes even more. Different methods of measuring earthquakes have been implemented
Premium Earthquake Plate tectonics Earth
inside. As the liquid moves‚ the crust moves with it‚ the tectonics plates move with it‚ causing the continents to move with it too. Figure 1: Supercontinent Pangaea PROOF Among
Premium Earth Plate tectonics Universe
an hour. 3. FORMATION OF THE SWISS ALPS The Swiss Alps are a mountain range formed by the convergence and collision of the European and African tectonic plates approximately 100 million years ago. As a result of this collision‚ the Tethys Ocean basin gets pushed upward by the African tectonic plate and into the Eurasian tectonic plate. The bottom of the Tethys Sea experiences enormous pressures‚
Premium Sedimentary rock Rock Plate tectonics
ridge. Radioactive decay in Earth’s mantle causes convection cycles‚ which drive plate tectonics. Hot mantle rises and undergoes decompression melt due to change in pressure. New oceanic crust is created in a characteristic sequence. Studies of Ophiolites show a sequence of sediment‚ pillow basalts‚ sheeted dikes‚ and gabbro being formed as hot mantle rises and creates new crust at ridges. The theory of plate tectonics is greatly supported by discoveries made at mid-oceanic ridges. INTRODUCTION
Premium Plate tectonics
has been slowly accumulating. The earth is made up of tectonic plates these are massive slabs of rock floating on magma ‚as the plates move about‚ they spread apart‚ collide‚ or slide past each other‚ This is the main cause of volcanoes and earthquakes Earthquakes occur in many regions all over the world in some regions they occur more frequently and severely than in others (depending on the location)‚ the main cause of earthquakes is tectonic plates grinding against each other ‚ therefore earthquakes
Free Earthquake Plate tectonics Volcano
Plate tectonics are responsible for many of Earth’s natural occurrences. From volcanoes to earthquakes plate tectonics play are large role. Another natural occurrence that is not is discussed as much as volcanoes and earthquakes is the formation of sedimentary rock. Plate tectonics also plays a major role in the formation of this type of rock. Plate tectonics is a term that is used to describe how the different plates that make up the Earth move and the reactions that occur as they are moving
Premium
Quiz 4 1. The idea proposed by Alfred Wegener to explain the continental shapes and positions is known as _____. A) Pangaea B) plate tectonics C) continental drift D) rift valley E) sea floor spreading 2. In the diagram below‚ which two are the best examples of different continental positions in the past? A) North America – South America B) North America – Africa C) South America – Asia D) Europe – North America E) South America – Africa 3. According to Wegener’s model‚ what evidence
Premium Plate tectonics
searching and discovered that the earth’s tectonic plates are in constant motion. Two plates get stuck together where they meet (FAULTS) but forces deep within the earth drag and pull down the plates in different directions. Stuck together for so many years the stain gets too much‚ which then an earthquake can occur. After reading about earthquakes I had one scientific term that I did not get. That term was "Tectonic Plates"‚ all I really know about Tectonic Plates is that they are underground. I needed
Premium Plate tectonics 1906 San Francisco earthquake Earthquake