On geological Zones
نویسندگان
چکیده
منابع مشابه
Do microplates in subduction zones leave a geological record
Active microplate boundaries in ocean-continent subduction zones may induce deformation of the overlying plate and spatial or geochemical variations in the volcanic arc. We discuss two modern cases. The first is the South Gorda-Juan de Fuca plate boundary in the Cascadia subduction zone, where there is little or no effect on the overriding plate and the oceanic plate takes up much of the deform...
متن کاملKarst groundwater management by defining protection zones based on regional geological structures and groundwater flow fields
Karst regions, occupy approximately 25% of the land surface of the earth. Karst aquifers are often major sources of water supply in these areas. However, karst aquifers are generally considered to be particularly vulnerable to pollution and anthropogenic impacts. Large withdrawals of water in karst areas for municipal, agricultural, and industrial use may competitively affect water supply in su...
متن کاملInterpreting SHARAD radargrams using interaction models and geological constraints to study faults zones
Introduction: SHARAD (SHAllow RADar) is a radar sounder capable of discriminating layers of different materials in the martian crust. Both its vertical resolution and discrimination capabilities depends on layer relative permitivitty. Therefore, SHARAD is in principle not only able to detect subsurface layers of liquid water and ice, but also some aspects of vertical structure of the Martian cr...
متن کاملCalifornia Geological Survey Zones of Required Investigation for Liquefaction – Livermore Valley, California
Official Seismic Hazard Zone Maps of Dublin, Livermore, and Altamont 7.5-minute quadrangles (1:24,000 scale) show areas that may be susceptible to earthquake-induced liquefaction. The maps are the result of the three-dimensional integration of geotechnical and geological data. Approximately 450 geotechnical borehole logs were collected, analyzed, entered into a geotechnical Geographic Informati...
متن کاملClimate on Geological Time Scales
JULY 2003, GSA TODAY ABSTRACT Atmospheric levels of CO2 are commonly assumed to be a main driver of global climate. Independent empirical evidence suggests that the galactic cosmic ray flux (CRF) is linked to climate variability. Both drivers are presently discussed in the context of daily to millennial variations, although they should also operate over geological time scales. Here we analyze t...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Proceedings of the Geologists' Association
سال: 1892
ISSN: 0016-7878
DOI: 10.1016/s0016-7878(92)80013-5