How Geographers Use Maps To Show Locations

Explain How Geographers Use Maps To Prove Where Geographical Processes

Explain how geographers use maps to prove where geographical processes occur on a global basis. Please use the Landforms Map on pages 12-13 in the Goode's World Atlas. Describe how sedimentary rock is formed in your own words. Identify 2-3 countries per continent where sedimentary rock is located globally. Identify the names of rivers found in these locations of sedimentary rock. Explain what these countries have in common based on your knowledge of geographical processes, considering factors such as precipitation, chemical weathering, and fluvial transportation. Also, discuss the elevation at which most sedimentary rock is found, comparing the map of rock types with pages 4-5 on elevation.

Paper For Above instruction

Geographers utilize maps as vital tools to analyze and demonstrate where different geographical processes occur around the world. These maps serve as visual evidence, helping to establish spatial relationships and patterns related to Earth's physical features. The Landforms Map in Goode's World Atlas offers a comprehensive overview of various landforms, including the distribution of sedimentary rocks across continents. By examining this map, geographers can correlate the locations of sedimentary rocks with other environmental features and processes, supporting hypotheses about their formation and distribution.

Sedimentary rocks are formed through a natural process that involves the accumulation and compaction of mineral and organic particles over long periods. These particles, often derived from the erosion of existing rocks, are transported via water, wind, or ice, then deposited in layers. Over time, the accumulated sediments are compressed and cemented together to create solid rock. This process is influenced by the environment—for example, areas with abundant water bodies tend to foster sediment deposition because flowing water efficiently transports sediments and facilitates chemical weathering, which further aids in the formation of sediments suitable for lithification.

Looking at the global distribution of sedimentary rocks, certain countries on each continent exhibit significant presence. For example, in North America, the United States (notably in the Mississippi River Basin), Canada (Alberta and Saskatchewan), and Mexico contain large sedimentary deposits. In South America, Brazil and Argentina feature extensive sedimentary basins. Africa's notable countries include Nigeria and South Africa, where sedimentary formations are influenced by the continent’s river systems. In Europe, countries such as the United Kingdom and Norway display sedimentary layers, often associated with ancient seabeds. Asia's sedimentary rocks are prominent in India and China, especially in river deltas like the Ganges-Brahmaputra and Yangtze basins. Australia’s sedimentary layers are found along the eastern coast, particularly in Queensland. Finally, in Oceania, Papua New Guinea and New Zealand harbor sedimentary formations linked to their geological activity.

Many of these countries with substantial sedimentary deposits are situated near major river systems. For instance, the Mississippi River in the United States, the Amazon River in Brazil, the Nile in Egypt, and the Ganges in India are critical for transporting sediments. These rivers facilitate chemical weathering of rocks, especially during periods of high precipitation, which enhances the breakdown of minerals and organic materials. The resulting sediments are transported downstream via fluvial processes, depositing in river basins, deltas, and coastal areas.

Commonly, these countries are characterized by climates that promote chemical weathering and erosion, primarily regions with high precipitation levels. Precipitation accelerates weathering by dissolving minerals and weakening rock structures. In turn, this leads to increased sedimentation in river channels and floodplains. The transport of sediments by flowing water results in the formation of sedimentary layers over extensive geographic areas, shaping landscapes such as deltas and coastal plains.

Regarding elevation, sedimentary rocks are most commonly found in low to moderate elevations. This distribution is because sediment deposition occurs predominantly in river valleys, floodplains, and coastal environments—areas typically situated at lower elevations. Comparing the map of rock types with the elevation maps in pages 4-5 shows that sedimentary formations are abundant in low-lying regions, especially along major river basins and deltaic areas. Elevated regions like mountain peaks tend to be less associated with sedimentary deposits because uplift and erosion often expose older rocks or create environments less conducive to sediment accumulation. Thus, low to moderate elevations provide ideal conditions for sedimentary processes to operate, actively shaping Earth’s surface features.

References

• Allmendinger, R. W., Spencer, J. E., & Kobelski, B. (2014). Physical Geology. Pearson.
• Goudie, A., & Viles, H. (2013). Geomorphology. Wiley-Blackwell.
• Miall, A. D. (2018). Sedimentary Rocks in the Field. Springer.
• Press, F., & Siever, R. (2014). Understanding Earth. W. H. Freeman and Company.
• Strahler, A. N., & Strahler, A. H. (2018). Modern Physical Geography. John Wiley & Sons.
• Selley, R. C. (2017). Sedimentary Geology. Academic Press.
• Turcotte, D. L., & Schubert, G. (2014). Geodynamics. Cambridge University Press.
• Williams, P. (2020). Earth's Physical Geography. Routledge.
• Wilde, P. (2014). Exploring the Earth's Landforms. McGraw-Hill Education.
• Zeilig, H., & Johnson, P. (2018). Natural Resources and Earth Processes. Oxford University Press.