First posted August 2, 2021 For additional information, contact: Director, Geosciences and Environmental Change Science CenterU.S. Geological SurveyBox 25046, MS-980Denver, CO 80225-0046 This report presents digital geologic, gravity, aeromagnetic maps for the onshore parts of Santa Maria Point Conception 30'x60' quadrangles at a compilation scale 1:100,000. The map depicts distribution bedrock...

A novel probabilistic methodology for regional seismic site characterization is proposed and applied to a region with highly heterogeneous surficial geology varying soil sediment thickness stiffness. The method combines various sources of geological geotechnical uncertainties develop three-dimensional (3D) shear-wave velocity ( V s ) model evaluate the associated uncertainties. 3D unconsolidate...

1 State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China, 2 Laboratory for Marine Geology, Qingdao National Oceanography Laboratory for Science and Technology, Qingdao, China, 3 Key Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China, 4 Departame...

First posted April 5, 2023 For additional information, contact: Contact Information,Geology, Minerals, Energy, & Geophysics Science CenterMenlo Park, CaliforniaU.S. Geological SurveyBuilding 19, 350 N. Akron Rd.P.O. Box 158Moffett Field, CA 94035 This preliminary geologic map presents mapping of the Leuhman Ridge area Edwards Air Force Base, California, conducted between 2020 and June 2021. The...

a Limnological Research Center, Department of Geology, University of Minnesota, Minneapolis, MN, 55455, United States b University of Maryland Center for Environmental Science, Appalachian Laboratory, Frostburg, MD, 21532, United States c Departments of Plant Biology and Geology, University of Illinois, Urbana, IL, 61801, United States d Department of Geology, Brown University, Providence RI, 1...

We report studies of ordered microporous and nanoporous polymer films formed by the evaporation of polymer solutions following exposure to a humid atmosphere. High speed microphotographic (HSMP) studies of the formation process showed that near the surface of the polymer solution, vapour condensation produced near mono-disperse water droplets which form a close-packed monolayer (or ‘breath figu...

Conditions allow surficial liquid flow on three bodies in the Solar System, Earth, Mars, and Titan. Evidence for surficial liquid flood flow has been observed on Earth and Mars. The mechanisms for generating flood flow vary according to the surficial conditions on each body. The most common flood-generating mechanism on Earth is wide-spread glaciation, which requires an atmospheric cycle of a v...