Angel Falls

By Jerrick Lee

Introduction

Welcome, In this presentation I will be talking about my chosen landform 'Angel falls' I will be describing how the landform changes, interpret and explain how it changes, predict what will happen to it in the future, annotate a diagram explaining its formation and more.

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Source: http://www.superbwallpapers.com/nature/angel-falls-15234/

Angel Falls

Angel Falls is located in the Guayana highlands, and it is just one of the five great adventure regions in Venezuela, it is the worlds tallest uninterrupted waterfall, standing at 980m in height and 180m in width at the base. More than a million travellers come to view this awe-inspiring site yearly. Angel Falls is 15 times higher than Niagara Falls with its total of approximately 52 meters.

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Source: https://www.google.com.hk/maps/search/Angel+Falls,+Venezuela/@5.7943261,-63.4459499,386750m/data=!3m1!1e3?hl=en

Location

Angel Falls is located in Canaima National Park in Bolivar State, along Venezuela's border with Brazil. It's coordinates are 5.9675º N, 62.5356 W. As you can see above it is in the top half of South America.

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Source: http://salto-angel.com/en/angel-falls-venezuela/information/history

The Geology

Angel Falls is part of a plateau known as the 'Guyanese shield' that underlines the lands located in Venezuela to the south of Orinoco River. The plateau's age is estimated to be around two billion years old, it is composed of three main geological formations. The oldest is an underlying igneous-metamorphic basement formed some 1.2-3.6 billion years ago whilst South America was joined to Africa as the supercontinent Gondwanaland. The Guyanese Shield. The geographic region in Venezuela, known as the Guyanese Shield, existed from the start as a great plain at an elevation roughly as high as today's visible tepuis, about 6500 to 9800 feet. Approximately 200 to 400 million years ago, a serious of climate related phenomena such as weathering and erosion caused important changes to the geography of the 'great plain' to make it the landform we all know today.

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https://upload.wikimedia.org/wikipedia/commons/thumb/e/e9/WaterfallCreationDiagram.svg/2000px-WaterfallCreationDiagram.svg.png

The origin and development of the landform

The origin of the landscape was rather simple, it was mainly the use of deposition and transportation of the sediments, soil and rock. First, raining developed a waterway. Then the water carved a path in the hard stone until it falls into what is known as a plunge pool (made of soft rocks) Through the timespan of tens of millions of years, the water would then erode at the rock till it forms the base of the waterfall. The transformation of the landscape was due to drastic variations of arid climate to humid and vice versa of strong, constant and lingering precipitations, droughts, freezing, discharges with high and low temperatures; storms, hurricanes, and the tectonic movements of the earth. The erosion was caused by atmospheric agents removing the material deposited in the great plain during millions of years. In places where the rock was softer or 'less resistant' there would be greater erosion meaning that there would be a greater erosion.

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Source: http://cdn.lolwot.com/wp-content/uploads/2015/04/20-magnificent-latin-american-tourist-destinations-17.jpg

What If Angel Falls Received Too Many Visitors Yearly?

The seriousness and the damage will depend on the amount of tourist, the transportation used and the climate. Although tourism can help increase the popularity of the attraction and site, there are many negative effects that tourism can have on Angel Falls. The pollution caused by all the transportation from the amount of tourist can ruin the environment around the site and destroy many different animal habitats and quality of the plant life. It would also be very hard to maintain the quality of the surrounding area since there would be litter from the tourist which could harm the environment.
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Source: http://thebritishgeographer.weebly.com/uploads/1/1/8/1/11812015/7366976_orig.jpg?432

What would the waterfall look like if erosion and weathering continued to take effect?

Given the current rate of erosion and weathering from the elements such as air, ice etc. It is estimated that in the proceeding thousands of years, the waterfall will continue to erode the plunge pool whilst eroding the top of the waterfall possibly lowering deepening the plunge pool that has already been formed by 0.5-1 meters. However, the constant transportation of rocks and sediment may add to the overall mass of the waterfall. These changes will not be visible unless measured by scale.

Conclusion

In conclusion, Angel falls is one of the biggest attractions on the planet and the tallest waterfall ever recorded, it has over 180 million years of history and has millions of visitors annually. However, should the visitors that come annually increase to overwhelming amounts it may have more negative effects on the site than positive effects.