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The Rio Grande Rift runs north from Mexico into central Colorado, and is made up of a series of basins that are bounded by faults. Over the past 25 million years, these basins developed as tectonic stresses pulled the continent apart and filled the basins with sediment. At the same time (geologically speaking), volcanic eruptions produced large ash-flow deposits and basalt flows, which also filled the basins. As a result, the Rio Grande Rift basins are layered with both sedimentary and volcanic rocks. Understanding the region’s geological architecture and how it has changed through time is essential for answering questions about the transport of water contaminants, water availability, and the effect of volcanic activity on climate. The more we understand about geology, as well, the better we can plan for living more sustainably with the environment. |
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