Overview of Environmental Geology

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Presentation transcript:

Overview of Environmental Geology

The Earth System

Environmental Geology Geology – the study of the earth, its materials and their properties, its internal and external physical, chemical, and biological properties, and its history

Environmental Geology Environment – anything, living or nonliving, that surrounds and influences living organisms

Environmental Geology Environmental Geology – the application of geology to environmental concerns

Environmental Geology Geologic processes affect every inhabitant of Earth Earthquakes Floods Landslides Volcanoes

Environmental Geology Geologic processes operate on multiple time scales Slow geological processes Formation of minerals Evolution of the Earth’s atmosphere Fast geological processes Earthquakes Landslides

1994 Los Angeles Earthquake

Environmental Geology Humans depend on material resources from the Earth Minerals Metals Energy Soil Water

Human Population Growth

Environmental Geology Concepts in environmental geology The Earth System The Earth is unique The Earth is a closed system Energy flows through the system Matter cycles through the system Geologic processes and humans operate on different time scales

The Earth System

The Earth System

Components of the Earth System

Environmental Geology Concepts in environmental geology Hazardous Processes Hazardous processes have always existed Risk is a characteristic of the human-Earth system relationship

Environmental Geology Concepts in environmental geology Earth Resources We are fundamentally dependent on Earth’s resources for the conduct of modern society Resources are limited Earth’s resources can be managed properly

Types of Resources

Environmental Geology Concepts in environmental geology Waste Human activities generate waste – we do not throw anything “away” Human activities can alter the Earth System Dam building Urbanization Agriculture Deforestation Natural resource extraction

Environmental Geology Concepts in environmental geology The Human-Earth System Relationship Managing the Earth System involves managing human behavior

Environmental Geology The scope of environmental geology Earth Materials Minerals, rocks Internal Processes Volcanoes Earthquakes

Environmental Geology The scope of environmental geology External Processes Water Wind Ice

Environmental Geology The scope of environmental geology Resources Groundwater Surface water Metals Soils Energy Fossil fuels Non-fuel minerals

Per Capita Energy Demand

Solar Energy

Natural Gas

Oil Pumpjack

Aluminum Ore