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The coastal plain is made up largely of alluvial mud swept out to sea by the Amazon River, carried north by ocean currents, and deposited on the Guyanese shores. [1] A rich clay of great fertility, this mud overlays the white sands and clays formed from the erosion of the interior bedrock and carried seaward by the rivers of Guyana. [ 1 ]
Pomeroon is within the Guyana coastal plain and the area is populated with mangrove swamp vegetation. Siriki Creek is an estuary of the Pomeroon River. [ 4 ] The mouth of the river has been deflected from pouring straight into the Atlantic ocean by a sandy spit that redirects the river to the northwest via the Cozier Canal.
Map of Guyana Georgetown, Capital of Guyana Bartica. This is a list of settlements in Guyana. The following definitions have been used: City: Any settlement listed at [1] with population estimates of 75,000 or more. Town: Defined by the government of Guyana as 'municipalities'. [2] Village As defined by official government documents, census or ...
The country can be divided into five natural regions: a narrow and fertile marshy plain along the Atlantic coast (low coastal plain) where most of the population lives; a white sand belt further inland (hilly sand and clay region), containing most of Guyana's mineral deposits; the dense rain forests (Forested Highland Region) in the southern ...
Historically, agriculture was the chief economic activity in Guyana despite the coastal plain which comprised only about 5 percent of the country's land area being suitable for cultivation of crops, 2% arable land.
Guyana, meaning "land of many waters", is rich in water resources. Most of the population is concentrated in the coastal plain, much of which is below sea level and is protected by a series of sea walls. A series of shallow reservoirs inland of the coastal plain, called "water conservancies", store surface water primarily for irrigation needs. [2]
The fertile coastal plain consists of marine clay deposits, weathering products from the Andean mountain range that reached the coast of Suriname via the Amazon River and the Guiana Current. [4] The coastline is mobile because land is washed away repeatedly under the influence of storms and currents. [5]
Shield rocks in Guyana are all dated between 1.6 and 2.5 billion years ago. The Quaternary lands are located in the northern part of Guyana, near the coast, unconformably on the Paleozoic lands. The coastal plains consist of thin layers (between 8 and 15 meters in the old plain) of marine clay, sand and pebbles.