Vertical Electrical Sounding (VES) was carried out in Rukpokwu, Obio/Akpor Local Government Area, Rivers State, Nigeria to investigate the effect of waste dump on groundwater quality study area. An ABEM SAS 300 terrameter used. Schlumberger configuration adopted for sounding acquire a 4 point data, and at Rukpokwu adjudged be free from dumps which served as control. The result resistivity surve...

First posted July 29, 2022 For additional information, contact: Director,California Water Science CenterU.S. Geological Survey6000 J Street, Placer HallSacramento, California 95819 The locations of many faults in and near the Rialto-Colton groundwater subbasin are not precisely known because spatial density existing lithologic hydrologic data used to infer can be sparse. U.S. Survey, cooperatio...

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...