Plate Boundaries and Earthquake Featurs - Essay Example

Download file to see previous pages This analysis seeks to explain and help comprehend diverging zones. A boundary with divergence is a location where plates move apart while occurring above the growing convection currents. These currents rising push upon the base of the lithosphere, forcing it up while flowing beneath it. This tangential surge results in a drag of the plate substance over it, in a similar direction flow. At the apex of fortify, the overlying plate gets elongated thin, and because it cannot hold on anymore, it fractures and tows apart. Divergence occurs when the boundary plates move with different velocities both vertically and horizontally. According to Strickler’s 2nd law of GeoFanstasy, divergence occurs due to a massive stress at a tremendously slow rate on the boundary plates. The up and down movements result in distortion of the earth’s crusts resulting in fractures and joints, breaks and slips and folds. Krafla Volcano; the northern part of Iceland clearly shows the consequences of these plate movements. At the Krafla Volcano region, the current ground fractures continually widens as new ones emerge after a few months. In the period between 1975 and 1984, a number of rifting activities took place close to Krafla fissure region. A few of the rifting incidents were pursued by some significant volcanic activities; the ground gradually rose 1-2 meters prior to unexpected dropping, which signaled a looming eruption. In the era linking 1975 and 1984, the ground rose by a stunning 7 meters due to the plate divergence (Condie, 1997). The movement of the earths’ crust results in different formations. The conditions bringing forth these differences include the Temperature, Type and magnitude of the force and Rock type. Economic resources consist of naturally occurring materials of earth in dire demand for different uses. These economic resources include minerals, rocks and gases. Nature and divisions of these resources relate to geological structure and its history resulting in a wealthy economic resource. Stop 2: Haiti an earthquake feature location Introduction An earthquake feature point is a place where there is a high activity underground resulting to frequent earthquakes and other tremors. Maps of Japan Map of Japan showing the three plates in contact The type of earthquake: Megathrust A Megathrust fault is a boundary connecting a sub-ducting zone and an overriding plate. A Megathrust quake results from an abrupt slip between the two plates down the fault line. It occurs in an area of Megathrust fault. An earthquake results from friction of plates and is increases as it progresses from one layer to another. Grinding of plates against the other is the main cause of earthquakes (Rafferty, 2011). Japan sits at the top of three continental plates rubbing against the other; the Pacific, the Eurasian and the Philippine Sea plates. These three plates continually rub against the other developing a tremendous pressure escaping with a vicious force. According to the Stille (2006), Japan is in a “ring of fire”, it experiences an earthquake every seven minutes. A seismic network takes down the measurements of the earthquake while a seismograph measures the magnitude or energy released while intensity is the strength the quake shakes things. The quakes produce two waves; P waves, a compressional wave and S or shear wave. The shear wave is slow ...Download file to see next pages Read More