crustal plates are bumping each other. On May 22‚ 1960‚ in the middle of the afternoon‚ a wide range of place started to quake‚ near Valdivia‚ in southern Chile and lasted in 7 to 10 minutes. Consequently‚ dozens of islands and countries were affected; and the death toll‚ and monetary costs skyrocketed. Everything has its own reason. As for the Great Chilean Earthquake (or the Valdivia Earthquake)‚ it occurred‚ caused of the release of mechanical stress between the subducting Nazca Plate and the
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billion years ago. 10. Where divergent plate boundaries form beneath continental masses‚ low areas known as RIFT VALLEYS form. 11. An interval of geologic time not represented by strata in a particular are is a HIATUS. 12. The two basic types of luster are METALLIC and NONMETALLIC 13. The three types of convergent boundaries are OCEANIC-OCEANIC‚ OCEANIC-CONTINENTAL‚ CONTINENTAL- CONTINENTAL. 14. At a mid-ocean ridge spreading center‚ what happens? The plates are moving away from each other. 15
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Pangaea‚ Pangæa‚ or Pangea (pron.: /pænˈdʒiːə/ pan-JEE-ə;[1]) was a supercontinent that existed during the late Paleozoic and early Mesozoic eras‚ forming about 300 million years ago.[2] It began to break apart around 200 million years ago.[3] The single global ocean which surrounded Pangaea is accordingly named Panthalassa. The name Pangaea is derived from Ancient Greek pan (πᾶν) meaning "entire"‚ and Gaia (Γαῖα) meaning "Earth". The name was coined during a 1927 symposium discussing Alfred Wegener’s
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rise and fall within the mantle‚ the crust breaks up into large pieces‚ called plates‚ which move about very slowly on earth’s surface. The movement of the plates creates powerful forces that continually create and destroy land features and reshape the earth’s surface. Most of the action takes place at the plate edges‚ or boundaries‚ where plates move against or over each other‚ or dive back below the surface. As the plates move‚ mountains are uplifted‚ the sea floor cracks and spreads‚ volcanoes erupt
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EAR 105 extra-credit study guide. This is both a study guide and an extra credit assignment worth 10 points on your exam! Using your class notes and the book‚ please answer the following questions with words or with sketches. Use this as a study guide. Remember‚ it will count as extra credit toward your test grade. You may work in groups of 4 or less. If you do work in groups‚ all names go on ONE copy that is handed to me. You may work on separate sheets of paper‚ or answer using this document
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earth as well covering very wide areas‚ often covering thousands of square kilometers‚ as well as convergent plate margins. The high pressure and temperatures are due to the process taking place at depths greater than 5 kilometers. Regional metamorphic rocks are almost always foliated and are formed under various degrees of differential stress caused by the tectonic forces and plate motions in combination with various settings of high pressures and temperatures. Basalt metamorphosed at low temperatures
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Convections Currents The main idea that I would like you to get from this set of notes is that convection currents are a swirling motion of a fluid that needs a heat source and a cold source to work. The rest of the notes will deal with supporting this idea and giving some examples of convections currents here on earth. Once the earth collects enough material it will start to get so heavy that it compresses inward toward the center of gravity a lot. This smashing of
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funnel is measured. The process is repeated after intervals of five minutes. The time is recorded and the height. * Diffusion in solids -4 agar plates -KMnO4 crystals -methyl orange -refrigeration -ruler The experiment requires 4 plates of agar due to his transparency and the colloid that forms when mixed with water. One pair of plates is labeled 4^0 C and the second pair RT (room temperature). After taking the lids of the first pair ‚using a tooth pick‚ a small crystal of potassium
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Houston‚ Seattle‚ and San Francisco have all experienced a fault shift. In the case of Houston‚ the likelihood of an earthquake is extremely low. The instances of a fault shift on that area of the North American Plate don’t occur often. Earthquakes that occur are not by normal means of plates shifting but from the process of fluid extraction (Fehling 19). Seattle on the other hand has a very high probability of an earthquake occurring. There are three different types of quakes that the city experiences
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North American Plate at a rate of a few centimeters for each year. In the event that the development proceeds in light of current circumstances and course‚ in 10 million years‚ Los Angeles‚ presently at low scope‚ will have moved northward to the same scope as San Francisco. In 50 to 60 million years‚ Baja California and parts of California west of the San Andreas flaw will have turned out to be totally isolated from whatever is left of the North American Plate. As the Pacific Plate and the North
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