2. Geological and environmental setting
The Rio Grande watershed (Fig. 1) comprises of a series of alluvial-fill basins formed by half grabens that PD-L1 inhibitor 2 developed during the formation of the Rio Grande rift ∼30 Ma ago due to an episode of widespread extension of the western United States (Keller and Baldridge, 1999). These basins are filled with alluvial, fluvial, playa, and lacustrine sediments derived from erosion of adjacent Precambrian crystalline, Paleozoic/Mesozoic sedimentary, and Tertiary volcanic bedrock highlands and range in depth from less than 30 m to 4000 m (Keller and Cather, 1994). The major river system draining the watershed is the Rio Grande, with its headwater region in the San Juan Mountains of southern Colorado. In New Mexico, the Rio Grande flows from north to south and becomes a semi-arid river in the central and southern portions of aggregates state.
Fig. 1. Location map of water sampling points in the Rio Grande watershed.Figure optionsDownload full-size imageDownload high-quality image (393 K)Download as PowerPoint slide
The Rio Grande watershed (Fig. 1) comprises of a series of alluvial-fill basins formed by half grabens that PD-L1 inhibitor 2 developed during the formation of the Rio Grande rift ∼30 Ma ago due to an episode of widespread extension of the western United States (Keller and Baldridge, 1999). These basins are filled with alluvial, fluvial, playa, and lacustrine sediments derived from erosion of adjacent Precambrian crystalline, Paleozoic/Mesozoic sedimentary, and Tertiary volcanic bedrock highlands and range in depth from less than 30 m to 4000 m (Keller and Cather, 1994). The major river system draining the watershed is the Rio Grande, with its headwater region in the San Juan Mountains of southern Colorado. In New Mexico, the Rio Grande flows from north to south and becomes a semi-arid river in the central and southern portions of aggregates state.
Fig. 1. Location map of water sampling points in the Rio Grande watershed.Figure optionsDownload full-size imageDownload high-quality image (393 K)Download as PowerPoint slide