Jaesung Lee Geography 1 Professor Thomas Orf Chapter 14 Questions 1) The first evidence Wegner was able to find was the remarkable number of close affinities of geologic features on both sides of the Atlantic Ocean. He found the continental margins of the subequatorial portions of Africa and South America fit together with jigsaw-on-like precision. He also determined that the petrologic records on both sides of the Atlantic show many distributions- such as ancient coal deposits-that would
Free Plate tectonics
Lecture 1: Introduction Geology - the study of the Earth‚ the processes that shape it‚ and the resources that could be obtained from it. Main branches Physical Geology - deals with the materials that comprise the Earth and the processes that affect it (e.g.‚ Volcanology‚ Seismology‚ Environmental Geology‚ Engineering Geology‚ Mining Geology‚ Petroleum Geology‚ Mineralogy‚ Petrology‚ Geomorphology‚ Geophysics‚ Geochemistry‚ Planetary Geology) Historical Geology - the study of the origin and
Premium Plate tectonics
ENDOGENETIC PROCESS: The Endogenetic processes are the processes that shape the land by forces coming from within the earth (Endogenetic forces). There are 3 main Endogenetic processes: folding‚ faulting and volcanism. They take place mainly along the plate boundaries‚ which are the zones that lay on the edges of plates. These zones are weak. Endogenetic processes cause many major landform features. MOVEMENTS: The forces coming from within the earth cause two types of movements in the earth.
Free Volcano
non-silicates. b. Ferromagnesian and Non-ferromagnesian silicates. c. Carbonates and oxides. 10. Which are the most abundant minerals in the crust‚ silicates or nonsilicates? 11. What type of rocks form when magma or lava undergoes cooling and crystallization? 12. List the three types of magma/lava in increasing order of their viscosity. 13. The most common rocks on the continent are ____________ (fill in the blank). The most common rocks on the ocean floor are ____________ (fill in the blank). 14
Premium Plate tectonics Sedimentary rock
the fissure on the volcanoes rift zone and feeds lava streams that flow down slope. the “Phreatic” type eruptions are driven by explosive exploding steam resulting from cold ground or surface water coming into contact with hot rock or magma. In this case no new magma is erupted‚ only the fragments of pre-existing solid rock from the volcanic conduit are blasted out. Though usually the eruptive activity of these volcanoes is weak‚ sometimes it can be very violent. the “Plinian” type eruptions are
Free Volcano Volcanology
EAS 100 Study Guide for the Lecture Quiz Note: There may be questions on the quiz on other topics‚ but the list below represents my best attempt to list the high points of our class material for you. THIS BRIEF OUTLINE DOES NOT REPLACE YOUR TEXTBOOK. YOU NEED TO STUDY IT THOROUGHLY TO DO WELL ON THE QUIZ! Chapter 1 What sciences are included in Earth Science? Encompasses all sciences that seek to understand the Earth and Earth’s neighbors in space. Including: geology‚ oceanography‚ meteorology
Premium Sedimentary rock Metamorphic rock Igneous rock
Evaluate how plate tectonics theory helps our understanding of the distribution of seismic and volcanic events. Plate tectonics is a relatively new science. It’s partially explained in the sense that we still don’t know fully about how the plates came together‚ what they were before they were the seven continents we know today. We already know‚ or have a theory‚ about what our world was like a long time ago and so if we already know that the plates can pull and push against each other‚ then surely
Free Plate tectonics
amongst subduction zones‚ which is where two tectonic plates meet and by which one plate moves under another and sinks into the mantle as the plates converge. Water is forced into the mantle‚ which forms magma. Less dense magma works its way through to the magma chamber. Eruptions of silica-rich magma form layers of ash and rock that eventually builds up a volcano to its cone shape. Eventually‚ the volcano explodes‚ just like Mt. Vesuvius did. (Watson 2011) When? – Mount Vesuvius is hundreds of thousands
Premium Volcano Herculaneum
pyroclastic flows happen. The Cinder cones is a steep conical hill of tephra that accumulate around and downwind from a volcanic vent.[1] The rock fragments‚ often called cinders or scoria‚ are glassy and contain numerous gas bubbles "frozen" into place as magma exploded into the air and then cooled quickly. Cinder cones range in size from tens to hundreds of meters tall. 2. The theory of plate tectonics According to the generally accepted plate-tectonics theory‚ scientists believe that Earth’s surface
Free Plate tectonics Volcano
crater onto the north coast and some lava flowed into the sea. While we know volcanoes erupt‚ how do they erupt? After some research‚ I found that they are caused by gas pressuring the molten magma‚ forcing the magma to push upward into the weak zones in the Earth’s crust. Thus‚ this allows the magma to push its way out through the volcano’s vents to be erupted from its crater to become lava. In the 1883 eruption‚ the eruption lasted from August 23-27. In 1988‚ the explosions lasted from February
Premium Volcano