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As shown by Karen Hughes-our digital Photographer- the recent heat wave has resulted in a "Burn" on the South Rim.
The photos show the canyon photographed from the north rim, with and without the haze created by smoke.
GEOLOGY is a System of CLASSIFICATIONS, a Language (excellent bookkeeping, without Accounting). Earth Science uses their Nomenclature, with Mathematics and PHYSICS, to understand the Earth. Learning a Language yields NO INSIGHT into the DYNAMICS of the Earth, when TERMS are used for FACTS! I will Correct inaccurate Assertions, as I find them. Ignore ASSERTIONS such as Mantle Plumes and Plate Theory- which are ARTIFICIAL concepts, created by Man; these require Continuous ADJUSTMENT!