it seems appropriate to post a short note on some aspect of Mexican geology. So here it is:
I just lectured on human-caused land subsidence in Mexico City in my geohazards class, an on-going problem there and in other places (e.g. Las Vegas, Nevada; central valley area, California.) This occurs where rapid withdrawal of groundwater in fine-grained aquifers causes the framework to collapse and the land surface to lower in direct response.
Now go out and have a margarita and impress your friends and family with this new found knowledge.
UPDATE: It's the end of the day and I'm at home, preparing to mix a michelada. Be warned - it's muy spicy. Mmm.
Tuesday, May 5, 2009
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The old Aztec capital is still viewable in parts of Mexico city. It has been preserved below the current streets of the city, in open topped "cave-like" structure. Do you have any idea how land subsidence is effecting the preserved Aztec capital known as Tenochtitlan?
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