Geologic field data collection, analysis, and map compilation are undergoing a revolution in methods, largely precipitated by global positioning system (GPS) and geographic information system (GIS) equipped mobile computers paired with virtual globe visualizations. Modern, ruggedized personal digital assistants (PDAs) and tablet PCs can record a wide spectrum of geologic data and facilitate ite...

Floods are one of the most important natural hazards in world and Turkey, depending on their severity formation conditions, they can cause disasters by creating diverse negative impacts sources from effects or human intervention. In this study, flood susceptibility map was prepared conducting analysis Çerçi River Fethiye District Mugla Province, Turkey. While determining River, geologic, geomor...

Previous inversions for slip rate along the San Andreas Fault System (SAFS), based on elastic half-space models, show a discrepancy between the geologic and geodetic slip rates along a few major fault segments. In this study, we use an earthquake cycle model representing an elastic plate over a viscoelastic half-space to demonstrate that there is no significant discrepancy between long-term geo...

For database limitations, see following page ii DATABASE LIMITATIONS Content This database is preliminary and has not been reviewed for conformity with U.S. Geological Survey editorial standards or with the North American Stratigraphic Code. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. This database, identified ...

First posted November 2, 2021 For additional information, contact: Contact HVOHawaiian Volcano ObservatoryU.S. Geological Survey1266 Kamehameha AvenueSuite A-8Hilo, HI 96720 This geologic map and its digital databases present the geology of eight major islands State Hawaiʻi. The should serve as a useful guide to anyone studying setting history Hawai‘i, including ground- surface-water resources,...

Autonomous geologic analysis of natural terrain is an important technique for science rovers exploring remote environments such as Mars. By automatically detecting and classifying rocks, rovers can efficiently survey an area, summarize results and concentrate on unusual discoveries, thus maximizing the scientific return. Similar techniques can be used in natural settings on land and under water...

Radioactive decay of naturally occurring nuclides provides the basis for the nearly all quantitative temporal constraints on geophysical phenomena, from climate dynamics on scales of 10-10 yr, to planetary differentiation over 10-10 yr. In general there are few geologic problems that are not accessible by radioisotopic chronometers, partly because of the wide range of radioactive parent nuclide...

In Korea, national digital geologic mapping has been carried out since the late 1990s. This approach is a part of so-called NGIS (National GIS) of Korea, and geologically mappable database information is one of nation-covering thematic mapping. Several further researches after the first year project for Korean digital geologic mapping will be followed. Especially, to provide basic information f...