The Trafalgar 7.5-minute quadrangle is situated near the maximum limit of Wisconsin Episode glacial deposits insouthwestern Johnson County. Till age (Trafalgar Formation) dominates surficial geology thequadrangle. Minor areas outwash and colluvium are found in valleys former meltwater pathways.Kame (sand gravel) northeast part a larger kame complexpresent central Holocene (post-glacial) alluviu...

Large-scale (> 1 m) variability in hydraulic conductivity is usually the main influence on field-scale groundwater flow patterns and dispersive transport. Incorporating realis tic hydraulic conductivity heterogeneity into flow and transport models is paramount to accurate simulations, particularly for contaminant migration. Sediment lithologic descriptions and geophysical logs typically offer f...

Fluvial siliciclastic rocks bracketing the Cretaceous-Paleogene (K-Pg) boundary in San Juan Basin, New Mexico (USA), provide records of regional fluvial and tectonic evolution during Laramide orogeny. Petrographic analyses sandstones from Upper Cretaceous Fruitland Formation Kirtland Paleocene Ojo Alamo Sandstone Nacimiento show that rivers depositing these sediments were sourced areas where un...