1. Environmental geology; definition and methods 6. Engineering and Environmental Geology

2. 6.1. Fundamentals of environmental geology The System of the Earth (FÖLDESSY 2011)

3. 6.2. Subjects of environmental geology Environmental geology is applied geology. Specifically, it is the use of geologic information to help us solve conflicts in land use, to minimize environmental degradation, and to maximize the beneficial results of using our natural and modified environments. The application of geology to these problems includes the study of the following: 1. Earth materials, such as minerals, rocks, and soils, to determine how they form, their potential use as resources or waste disposal sites, and their effects on human health; 2. Natural hazards, such as floods, landslides, earthquakes, and volcanic activity, in order to minimize loss of life and property; 3. Land for site selection, land-use planning, and environmental impact analysis; 4. Hydrologic processes of groundwater and surface water to evaluate water resources and water pollution problems; 5. Geologic processes, such as deposition of sediment on the ocean floor, the formation of mountains, and the movement of water on and below the surface of Earth, to evaluate local, regional, and global change.

4. Methods: Field methods - trenching - drilling - geophysical methods - hydrogeological methods Laboratory methods Mapping „Köszörűkő” quarry, Lábatlan Map of sensitivity of groundwaters (www.kvvm.hu) Trench excavating

5. Types of environmental hazards: Geological hazards - volcanism - earthquakes - landslides Antropogen environmental hazards

6. Map of the Ring of Fire Geological hazards Volcanoes

7. Effusive volcanism, Mauna Kea Explosive volcanism Lahar; Új-Zéland After the eruption of Merapi, 2010

8. Earthquakes Position of hypocentre and epicentre of the earthquakes (FÖLDESSY 2011) Longitudinal and transversal waves (FÖLDESSY 2011) Types of surface waves (FÖLDESSY 2011) Seismograph; Miskolc, 2010 Geologic hazards

9. Earthquakes Earthquake at Chile, 2010 (meszarosmarton.wordpress.com) Tsunami at Indonesia, 2004 Position of hypocentre and epicentre of the earthquakes (FÖLDESSY 2011)

10. Landslides slipping creeping Slipping near to the tunnel Creeping at Sumatra Geologic hazards

11. solifluction soil creep Solifluction at Trondheim, Norway Soil creeping at Telkibánya

12. Antropogen environmental hazards Red mud accident at KolontárSoil degradation at deforested area; Henan, China Soil degradation and secondary salinity Water pollution at the Raba river

13. Thank you for your attention!