Types of Convergent Plate Boundaries Essay Example | Topics and Well Written Essays - 750 words

Types of Convergent Plate Boundaries - Essay Example In a continental collision, the subducting plate is usually a plate with the oceanic crust that moves beneath the other plate with oceanic crust, therefore, moving beneath the other plate which can be made of either oceanic or continental crust. It is evident that during collisions between two continental plates large mountains ranges such as the Himalayas Mountains are made in the process. There are three types of convergent boundaries that can be subdivided into subduction and non-subduction. During the subduction types, there are two plates that the meet, the denser, cooler and heavier plate will dive below the lighter. The most floating plate one as it gets deeper into the mantle it then melts and creates a new magma (Ernst, 325-330). In this convergent boundary, two plates meet with the oceanic crust colliding, the one plate will be denser and heavier than the other, therefore, making it subduct. After the creation of the new magma, it then rises to the surface and pokes through the ocean surface as a submarine volcano. Connectively continuing eruptions will form a larger seamount where more and more eruptions will then eventually create a dry volcanic island in the ocean floor that will continue to erupt and build as long as it has a continued magma source. There is the presence of water in the rocks of the oceanic plate since they are made under the water in the oceanic floor. As the plate moves further down into the subduction zone more water contained in the plate is then squeezed out from the rocks when the plate begins to subduct. Nevertheless, the recrystallization of ocean floor rocks such as the serpentine that is unstable in the upper mantle recrystallizes forming olivine, causing dehydration through a loss of hydroxyl groups. In this case of oceanic-oceanic collision, the made magma will be mafic in nature with high iron and magnesium low silica making it very viscous. This result to shield volcanoes, due to this activity along an entire plane many volcanoes are made hence having a volcanic island and an arc of the chain of volcanoes.  

The International Aviation Policy Term Paper Example | Topics and Well Written Essays - 2750 words

The International Aviation Policy - Term Paper Example Air transportation is one of the leading industries across the globe and it also wields significant influences on the larger social, political, and economic mechanisms. For instance, air transport can positively contribute to a region’s economic growth, but there has to be an underlying demand. This essay is divided into two parts. Part one discusses the social, political, economic, geographical, infrastructure, and demographic influences on air transportation. Part two addresses the impact of air transportation liberalization on market, traffic patterns, and fares; carrier’s financial performance; and future prospects of carriers based in a global environment. Part I: International Regulatory and Oversight The absence of air transport, just like with any other operations in the economy, can confound economic progress. Where there have been more or less complete stiffening of regulations that interfere with or oppose the liberalization of markets, have been ‘socia l regulation’ (Wald, Fay, & Gleich, 2010). This involves issues like labor and consumer security, defense, safety, and environment. These are domains that have been usually addressed at the global arena by the International Civil Aviation Organization (ICAO) together with a number of unusual international agreements like the Warsaw Convention (MacKenzie, 2010). Of late, national or regional programs have also acquired global importance such as the US’s launching of more rigid security strategies (e.g. passenger information requirements), and the expansion of carbon trading inside the European Union (EU) to include all air transport. International air transport is currently a leading partner of globalization and is persistently redesigning itself to deal with the pressures of the social and economic integration that the process of globalization brings about. In economic terms, globalization takes place to foster a deepened division of labor and helps economies take adva ntage of their comparative advantage more fully (Wensveen, 2011). Possibly, though, more essentially, globalization promotes workforce and technology transfers and facilitates the energy that goes with entrepreneurial ventures to encourage the growth of new technologies and mechanisms that boost international interests. Another group of factors to be taken into account in evaluating international aviation policy are political and economic settings. The five basic known catalysts of stable international air transport are trade expansion, developments in the quality of service, cost adjustments, political disorder, and GDP rate. Political disorder would involve terrorist activities and protectionism. Although protectionism weakens trade expansion it seems as well to reduce foreign direct investment (FDI) (Wensveen, 2011). These restrictions weaken trade and boost capital costs eventually. Political disorder also boosts costs through regulation and defense. Such costs put service provi ders and shippers into a more disadvantaged position and reduce air travel. Changes in costs, specifically the costs of fuel, are a continuing hazard; increases in the costs of actual fuel before was zero (Wald et al., 2010). In the coming years this will cease to be the case as actual fuel costs will escalate. This kind of changes severely affects international aviation policy. The third group of factors is geographical, infrastructural, and demographical. Geography affects international aviation policy because cargo airlines choose to carry out their operations from airport near to their target markets. Some researchers studied