UNIT 6 Time Geologic
... Earth’s age were generally placed in the context of time spans that a person could understand relative to his or her own life. This changed as people began to explore Earth and Earth processes in scientific ways. James Hutton, a Scottish geologist who lived in the late 1700s, was one of the first sc ...
... Earth’s age were generally placed in the context of time spans that a person could understand relative to his or her own life. This changed as people began to explore Earth and Earth processes in scientific ways. James Hutton, a Scottish geologist who lived in the late 1700s, was one of the first sc ...
Chapter 8
... • Continents "drifted" to present positions • Continents "broke" through the ocean crust ...
... • Continents "drifted" to present positions • Continents "broke" through the ocean crust ...
Isotope Geochemistry of the Continents
... relationship between stratigraphic and Nd crustal residence times should tell us whether the rate of continental growth is increasing or ...
... relationship between stratigraphic and Nd crustal residence times should tell us whether the rate of continental growth is increasing or ...
A naturally occurring, inorganic solid that has a crystal structure and
... only about 30 are common. The most common are: quartz, feldspar, mica, and calcite. ...
... only about 30 are common. The most common are: quartz, feldspar, mica, and calcite. ...
Magma Supply Vs Magma Plumbing
... factory” • Understand the Wilson cycle – general concept - & the processes that lead to growth/shrinkage of continents • Understand the different forces that drive subduction and that control the angle of the subducting slab. • Know the different kinds of earthquakes that occur in subduction zones • ...
... factory” • Understand the Wilson cycle – general concept - & the processes that lead to growth/shrinkage of continents • Understand the different forces that drive subduction and that control the angle of the subducting slab. • Know the different kinds of earthquakes that occur in subduction zones • ...
Earthquakes, Volcanoes, Tsunamis
... A. The President wants YOU! You are the lead scientist in the United States Geological Survey (USGS) investigating earthquakes. The earthquake project that you have been working on has been accelerated by the President of the United States, and you need to begin your analysis immediately. The Presid ...
... A. The President wants YOU! You are the lead scientist in the United States Geological Survey (USGS) investigating earthquakes. The earthquake project that you have been working on has been accelerated by the President of the United States, and you need to begin your analysis immediately. The Presid ...
seismic waves
... metallic iron. • 2 layers—a solid inner core; liquid outer core. – The inner core is solid due to great pressure. – The outer core is under less pressure and flows in a liquid phase. Earth’s magnetic field generating flowing molten core. ...
... metallic iron. • 2 layers—a solid inner core; liquid outer core. – The inner core is solid due to great pressure. – The outer core is under less pressure and flows in a liquid phase. Earth’s magnetic field generating flowing molten core. ...
stress that occurs when an object is squeezed
... in which the African Plate is in the process of splitting into two new tectonic plates called the Somali Plate and the Nubian Plate, which are sub plates or protoplates. http://ajs-geo-blog.blogspot.com/2012/03/rift-valley.html ...
... in which the African Plate is in the process of splitting into two new tectonic plates called the Somali Plate and the Nubian Plate, which are sub plates or protoplates. http://ajs-geo-blog.blogspot.com/2012/03/rift-valley.html ...
No Slide Title
... Earth’s Surface Waters • Outgassing was responsible – for the early atmosphere – and also for Earth’s surface water • the hydrosphere ...
... Earth’s Surface Waters • Outgassing was responsible – for the early atmosphere – and also for Earth’s surface water • the hydrosphere ...
History of Earth Part 2 SG AK
... Thingvellir, Iceland, showing a fissure zone (in shadow) that is the on-land exposure of the MidAtlantic Ridge. Right of the fissure, the North American Plate is pulling westward away from the Eurasian Plate (left of the fissure). ...
... Thingvellir, Iceland, showing a fissure zone (in shadow) that is the on-land exposure of the MidAtlantic Ridge. Right of the fissure, the North American Plate is pulling westward away from the Eurasian Plate (left of the fissure). ...
Sea-Floor Spreading
... sound waves. The time it takes for the echo to arrive indicates the distance to the object. ...
... sound waves. The time it takes for the echo to arrive indicates the distance to the object. ...
Class notes ()
... If different minerals melt at different pressures that means that different minerals become solid at different temperatures ...
... If different minerals melt at different pressures that means that different minerals become solid at different temperatures ...
high-res
... Satellite image of a divergent plate boundary on land – Afar, Ethiopia, NASA, Public Domain, http://visibleearth.nasa.gov/ view_rec.php?id=17296 ...
... Satellite image of a divergent plate boundary on land – Afar, Ethiopia, NASA, Public Domain, http://visibleearth.nasa.gov/ view_rec.php?id=17296 ...
Plate Tectonics 3
... San Andreas forms a complex web of faults, including many in LA region Produces regions of tension and compression between active fault segments Leads to ...
... San Andreas forms a complex web of faults, including many in LA region Produces regions of tension and compression between active fault segments Leads to ...
Lecture Week 4, Tue
... – Linear chains of volcanoes or volcanic islands – Systematic variation of age ...
... – Linear chains of volcanoes or volcanic islands – Systematic variation of age ...
tectonic plates
... • Tectonic plate boundaries may be in the middle of the ocean floor, around the edges of continents, or even within continents. • The three types of plate boundaries are divergent boundaries, convergent boundaries, and transform boundaries. • Each plate boundary is associated with a characteristic t ...
... • Tectonic plate boundaries may be in the middle of the ocean floor, around the edges of continents, or even within continents. • The three types of plate boundaries are divergent boundaries, convergent boundaries, and transform boundaries. • Each plate boundary is associated with a characteristic t ...
Pinter_Brandon_How_Erosion_Builds_Mountains_SciAmerican_1997
... the earth system as a whole. along the U.S. Atlantic Coast have reflow over them, causing increased pre- Numerous different types of feedback vealed that the land is rising at rates of cipitation on the range’s windward have been recognized or postulated. a few millimeters to a few centimeters a slo ...
... the earth system as a whole. along the U.S. Atlantic Coast have reflow over them, causing increased pre- Numerous different types of feedback vealed that the land is rising at rates of cipitation on the range’s windward have been recognized or postulated. a few millimeters to a few centimeters a slo ...
Living Things - Mountain View Middle School
... •Thickest under mountains; thinnest under the ocean •Continental (land) mostly granite •Oceanic (ocean floor) mostly basalt ...
... •Thickest under mountains; thinnest under the ocean •Continental (land) mostly granite •Oceanic (ocean floor) mostly basalt ...
Plate tectonics - Wikipedia, the free encyclopedia
... surface radiated like a black body.[5] Those calculations implied that, even if it started at red heat, the Earth would have dropped to its present temperature in a few tens of millions of years. Armed with the knowledge of a new heat source, scientists reasoned it was credible that the Earth was mu ...
... surface radiated like a black body.[5] Those calculations implied that, even if it started at red heat, the Earth would have dropped to its present temperature in a few tens of millions of years. Armed with the knowledge of a new heat source, scientists reasoned it was credible that the Earth was mu ...
How Erosion Builds Mountains
... the earth system as a whole. along the U.S. Atlantic Coast have reflow over them, causing increased pre- Numerous different types of feedback vealed that the land is rising at rates of cipitation on the range’s windward have been recognized or postulated. a few millimeters to a few centimeters a slo ...
... the earth system as a whole. along the U.S. Atlantic Coast have reflow over them, causing increased pre- Numerous different types of feedback vealed that the land is rising at rates of cipitation on the range’s windward have been recognized or postulated. a few millimeters to a few centimeters a slo ...
How Erosion Builds Mountains
... the earth system as a whole. along the U.S. Atlantic Coast have reflow over them, causing increased pre- Numerous different types of feedback vealed that the land is rising at rates of cipitation on the range’s windward have been recognized or postulated. a few millimeters to a few centimeters a slo ...
... the earth system as a whole. along the U.S. Atlantic Coast have reflow over them, causing increased pre- Numerous different types of feedback vealed that the land is rising at rates of cipitation on the range’s windward have been recognized or postulated. a few millimeters to a few centimeters a slo ...
Geophysics
Geophysics /dʒiːoʊfɪzɪks/ is a subject of natural science concerned with the physical processes and physical properties of the Earth and its surrounding space environment, and the use of quantitative methods for their analysis. The term geophysics sometimes refers only to the geological applications: Earth's shape; its gravitational and magnetic fields; its internal structure and composition; its dynamics and their surface expression in plate tectonics, the generation of magmas, volcanism and rock formation. However, modern geophysics organizations use a broader definition that includes the water cycle including snow and ice; fluid dynamics of the oceans and the atmosphere; electricity and magnetism in the ionosphere and magnetosphere and solar-terrestrial relations; and analogous problems associated with the Moon and other planets.Although geophysics was only recognized as a separate discipline in the 19th century, its origins go back to ancient times. The first magnetic compasses were made from lodestones, while more modern magnetic compasses played an important role in the history of navigation. The first seismic instrument was built in 132 BC. Isaac Newton applied his theory of mechanics to the tides and the precession of the equinox; and instruments were developed to measure the Earth's shape, density and gravity field, as well as the components of the water cycle. In the 20th century, geophysical methods were developed for remote exploration of the solid Earth and the ocean, and geophysics played an essential role in the development of the theory of plate tectonics.Geophysics is applied to societal needs, such as mineral resources, mitigation of natural hazards and environmental protection. Geophysical survey data are used to analyze potential petroleum reservoirs and mineral deposits, locate groundwater, find archaeological relics, determine the thickness of glaciers and soils, and assess sites for environmental remediation.