ENVS 2060 Lecture Notes - Lecture 4: Dolomite, Lake Ontario, Soil Structure
Document Summary
Soil in ontario are 12-15000 years old (after the last glaciers left) Soil formation begins with the sediments deposited from the front of the glacier. Organic matter, life forms, biomass existing on top and adding to the a-horizon. Mineral soil forms from the top down eluviated out of the a-horizon to the further b and c horizons. Organic soil forms from the bottom up organic material is laid down and layers are formed on top of it. P r o c e ss e s l e a d i n g t o f o r m at i o n o f h o r i z o n s. Climate weathering, increase temp, rainfall, frost free period: speed of translocation of that is being eluviated out of the a and illuviated into the b due to rainfall.