Understanding Earth 7th Edition: A Comprehensive Guide to Geology
Understanding Earth 7th Edition is a textbook by John Grotzinger and Thomas Jordan that covers the fundamentals of geology and earth system science. It introduces the concepts of plate tectonics, earth materials, geologic time, geobiology, volcanoes, earthquakes, climate, and human impact on the environment. It also provides examples of how geologists use data and observations to understand the processes that shape our planet.
The textbook is designed for undergraduate students who are interested in learning about the earth and its history. It features clear and engaging writing, stunning visuals, interactive exercises, and online resources. It also incorporates the latest scientific discoveries and advances in geology and earth system science.
Understanding Earth 7th Edition is a valuable resource for anyone who wants to gain a deeper appreciation of the dynamic and complex planet we live on.The textbook is organized into 23 chapters that cover a wide range of topics in geology and earth system science. Here is a brief summary of each chapter:
Chapter 1: The Earth System. This chapter introduces the concept of the earth system as a complex and dynamic network of interacting components, such as the geosphere, hydrosphere, atmosphere, biosphere, and cryosphere. It also explains how scientists use the scientific method and systems thinking to study the earth system.
Chapter 2: Plate Tectonics: The Unifying Theory. This chapter explains the theory of plate tectonics, which describes how the earth's lithosphere is divided into rigid plates that move relative to each other on the underlying asthenosphere. It also describes the types of plate boundaries and the geologic features and processes associated with them.
Chapter 3: Earth Materials: Minerals and Rocks. This chapter describes the properties and classification of minerals, which are the building blocks of rocks. It also describes the three major types of rocks (igneous, sedimentary, and metamorphic) and how they form through the rock cycle.
Chapter 4: Igneous Rocks: Solids from Melts. This chapter focuses on igneous rocks, which form from the cooling and crystallization of magma or lava. It explains how the composition, texture, and origin of igneous rocks can be used to infer their geologic history and environment.
Chapter 5: Sedimentation: Rocks Formed by Surface Processes. This chapter focuses on sedimentary rocks, which form from the accumulation and lithification of sediments. It explains how the sources, transport, deposition, and diagenesis of sediments affect their characteristics and classification.
Chapter 6: Metamorphism: Alteration of Rocks by Temperature and Pressure. This chapter focuses on metamorphic rocks, which form from the transformation of preexisting rocks under high temperature and pressure conditions. It explains how the agents, types, and grades of metamorphism affect the texture and mineralogy of metamorphic rocks.
Chapter 7: Deformation: Modification of Rocks by Folding and Fracturing. This chapter focuses on deformation, which is the change in shape or volume of rocks due to stress. It explains how stress, strain, rheology, and time affect the formation of folds and faults in rocks.
Chapter 8: Clocks in Rocks: Timing the Geologic Record. This chapter focuses on geochronology, which is the science of dating rocks and events in earth history. It explains how relative dating and numerical dating methods can be used to determine the ages of rocks and fossils.
Chapter 9: Early History of the Terrestrial Planets. This chapter focuses on the origin and evolution of the solar system and its planets. It explains how accretion, differentiation, impact cratering, volcanism, tectonism, erosion, and climate have shaped the surfaces and interiors of Mercury, Venus, Earth, Moon, Mars, asteroids, and comets.
Chapter 10: History of the Continents. This chapter focuses on the history of the continents from their formation in the Archean to their present configuration. It explains how continental crust forms through magmatic differentiation and plate tectonic processes such as subduction, rifting, collision, and terrane accretion.
Chapter 11: Geobiology: Life Interacts with the Earth. This chapter focuses on geobiology, which is the study of the interactions between life and earth systems. It explains how life originated on earth, how it evolved over time, how it affected the environment through biogeochemical cycles and feedbacks, and how it left traces in the fossil record.
Chapter 12: Volcanoes. This chapter focuses on volcanoes, which are vents that erupt molten rock or gas onto or near the earth's surface. It explains how volcanoes form at different tectonic settings such as divergent boundaries, convergent boundaries 248dff8e21