Shaiza Pasha, Bailey Punzalan, Erin Doyle, James sledge
Weathering in the Hill Country includes physical and chemical weathering. One type of physical weathering is abrasion. Abrasion is when an area gets scraped and then gets eroded from the area. Also another type of physical weathering is from wind and water. Wind weathers sediments by blowing away particles of the sediments from the land. Water weathers land or rocks by washing away sediments from the land. Lastly, an example of chemical weathering is when carbon dioxide is dissolved into rain water and then it chemically changes the sediments; called acid rain.
Erosion can happen geologically which is a slow method of erosion, but erosion can happen by accelerated erosion which happens because of the effects of man. Rill erosion also occurs in the Hill Country. Rill erosion is when rock breaks and the sediments flow through the channels or rills in the hill. Another type of erosion is gully erosion. Gully erosion is when a rapid water flow severs or cuts the rock or land. Now lastly, erosion can happen by abrasion when the wind blows soil across the land.
Deposition can happen from wind and water. Wind can blow sediments away and sometimes creates new land by clogging canals. Wind can also drop off sediments to create a bigger hill or mound. Water can deposit sediments by washing the sediments onto land or create new land by the water stopping at a certain point; results in new land around the water.
This shows the weathered rock from the hill country which is now mostly limestone.
This shows erosion in the Hill country.
This shows how rivers can deposit sediments to make land.