envierment
ardam
Erosion2022-Live.pptxErosion
Mechanical weathering
Chemical weathering
Biological weathering
Tendency towards sea-level=erosion & precipitation (sedimentation)
News
https:// www.theguardian.com/us-news/2022/oct/18/lithium-mining-nevada-boom-car-battery-us-climate-crisis
https://www.reuters.com/business/environment/global-co2-emissions-grow-by-less-than-1-this-year-iea-2022-10-19 /
https:// money.usnews.com/money/personal-finance/spending/articles/how-investing-in-reusable-products-can-save-money
https:// phys.org/news/2022-10-earth-hole-indication-abrupt-climate.html
Sedimentation
Lithospheric sediments
Clays, silts, sands
Biological sediments
Siliceous
Calcareous
Sedimentation Rates
1 cm/1000 years (ocean)
Up to 1cm/year (estuarine)
What is a typical deep sea sedimentation rate?
A) 1 mm/yr
B) 1 cm/yr
C) 1 m/yr
D) 1 km/yr
E) 1 cm/1000 years
Where does sediment settle?
Boulders?
Sands?
Muds?
Water velocity or slope controls grain size of sediments
Sedimentation
Deposition at coasts
Salt marshes
River deltas
River Deltas
Nile
Indus
Longshore Currents
Passive Margin
Episodic erosion
Graffiti
