USAtlas Geology at Mac App Store analyse

US GEOLOGY is one of the twelve chapters of The National Atlas of the United States® which was coordinated and lead by USGS, this is the effort of more than 20 Federal agencies. The other layers are, Agriculture, Biology, Boundaries, Climate, Environment, Government, History, Map Reference, People, Transportation and Water. Geobyte is planning to produce these Chapters in future. In this volume we have incorporated 46 layers of vector information available at The National Atlas of the United States® Website. These include Earthquakes, Volcanoes, Geologic Map, Mineral Operation, Magnetic Field, Waterways, County Boundaries and many more. Detailed Geologic Maps (scale of 1:500,000 or larger) and Faults, from Open-File Reports of USGS of 48 States are also included. The Legend or Key for each layer has been designed in the way that one can select all or select specific units from the legend and generate the map of particular interest. For example you can generate map with only Cretaceous Sedimentary rocks and only earthquakes of certain magnitude. The units on the map can be identified by long tap on the map. With the GPS capability of the system the location on the ground is known and you can add, edit and save notes on the map.The distance between two points and the area of polygon can also be calculated. All the layers can be displayed in both Mercator and Lambert Equal-Area Projections. There is no need to have access to WIFI, 3G or 4G Data Network to use this app. All the data are saved in your device. The National Atlas of the United States®, is the registered trademark of the United States Department of the Interior The layers included are: Coal Fields Continental Divide Earthquake Elevation Contours Geologic Map Geologic Map – Calderas Geologic Map – Faults Geologic Map – Impact Sites Geologic Map – Metamorphic Areas Geologic Map – 1:500 k State by State Geologic Map – Faults 1:500 k Glacial Limits Karst – Engineering Aspects Karst – Subsidence Landslide – Incidence and Susceptibility Landslide – Costly Events Landslide – Costly Regional Events Magnetic Field - Declination, 1 degree increments Magnetic Field - Declination Secular Variation, arc mins/yr Magnetic Field – Horizontal Intensity, 500 nanoTesla increments Magnetic Field – Horizontal Intensity Secular Variation, nano Tesla/yr Magnetic Filed – Inclination, 1 degree increments Magnetic Field – Inclination Secular Variation, arc mins/yr Magnetic Field – Total Field Intensity, 500 nanoTesla Increments Magnetic Field – Total Field Intensity Secular variation, nano Tesla/yr Magnetic Field – Vertical Intensity, 500 nanoTesla Increments Magnetic Field – Vertical Intensity Secular Variation, nanoTesla/yr Mineral Operations – Agricultural Minerals Mineral Operations – Construction Minerals Mineral Operations – Ferrous Mines Mineral Operations – Ferrous Processing Plants Mineral Operations – Miscellaneous Industrial Operations Mineral Operations – Nonferrous Mines Mineral Operations – Nonferrous Processing Plants Mineral Operations – Refractory, Abrasive and Other Industrial Operations Mineral Operation – Sand and Gravel Operations Mineral Operations – Stone, Crushed Quaternary Faults Seismic Hazard – Peak Acceleration Surficial Deposits (Eastern & Central States) Volcanoes Waterways State Boundaries County Boundaries Railroads Main Roads (inc Ferries) Latitude and Longitude …………………………..