Rock Blog #2


 I took this photo at Avila beach on the sidewalk.The object experiencing weathering is cement. Cement is usually very smooth with no cracks or damage when it is first formed. Weathering causes moisture, airflow, and other substances to seep into the cement. It also causes the degradation of the cement, breaking, cracking, and often lifting up from the surface. Cement experiences chemical weathering when rainwater falls it mixes with pollution such as nitrogen oxides. This chemical reaction causes the cement to weaken its structure. Lastly, winds and water wear away the surface of the cement leading to the deeper layers eventually. You could see in the picture the cracking and the different shades going on. 

This was taken on Sunday, April 13, at 2:42

Location: Avila Beach, CA, USA

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