Key concepts
... -know how pressure and temperature change as you move through the layers of the earth and their effects on the behavior of rocks -know the internal source of heat inside the earth and how heat moves by conduction or convection -know how old the earth is -be able to describe Wegener’s theory of conti ...
... -know how pressure and temperature change as you move through the layers of the earth and their effects on the behavior of rocks -know the internal source of heat inside the earth and how heat moves by conduction or convection -know how old the earth is -be able to describe Wegener’s theory of conti ...
Inventors and Scientists: Alfred Wegener and Harry Hess
... speeds. Their sizes don't match the landmasses on top of them. For instance, the North American plate is much larger than the North American continent. The plate starts at the western coast of North America and extends into the middle of the Atlantic Ocean. Iceland is split down the middle. It belon ...
... speeds. Their sizes don't match the landmasses on top of them. For instance, the North American plate is much larger than the North American continent. The plate starts at the western coast of North America and extends into the middle of the Atlantic Ocean. Iceland is split down the middle. It belon ...
strontium-87
... Strontium (Sr) is a trace element, which is abundant in most magmatic, metamorphic and sedimentary rocks and soils. In dissolved form, Sr is found in groundwater, river water and oceans. Due to nutrient uptake, Sr also occurs in plants and, consequently, animals. With a portion of 450 ppm, the frequ ...
... Strontium (Sr) is a trace element, which is abundant in most magmatic, metamorphic and sedimentary rocks and soils. In dissolved form, Sr is found in groundwater, river water and oceans. Due to nutrient uptake, Sr also occurs in plants and, consequently, animals. With a portion of 450 ppm, the frequ ...
PDF sample
... Formation of the Moon may be a consequence of an impact of Mars-sized object about 2.48 billion years ago (Halliday 2008). The impact blasted numerous pieces of rock material and dust to orbit the Earth, this material later accreted to form the Moon. There are several theories regarding the birth of ...
... Formation of the Moon may be a consequence of an impact of Mars-sized object about 2.48 billion years ago (Halliday 2008). The impact blasted numerous pieces of rock material and dust to orbit the Earth, this material later accreted to form the Moon. There are several theories regarding the birth of ...
The Ocean Floor DOC
... • Deep, steep-sided valleys known as submarine canyons are cut into the continental slope. • Turbidity currents are occasional movements of dense, sediment-rich water down the continental slope. • In regions where trenches do not exist, the steep continental slope merges into a more gradual incline ...
... • Deep, steep-sided valleys known as submarine canyons are cut into the continental slope. • Turbidity currents are occasional movements of dense, sediment-rich water down the continental slope. • In regions where trenches do not exist, the steep continental slope merges into a more gradual incline ...
Document
... through the water column and settle on the ocean floor. Continental sediments: from weathering on mountains, sediments accumulate in low lying basins; also, largely from former ocean floors that were transported, exposed, and uplifted due to tectonic activity ...
... through the water column and settle on the ocean floor. Continental sediments: from weathering on mountains, sediments accumulate in low lying basins; also, largely from former ocean floors that were transported, exposed, and uplifted due to tectonic activity ...
The Earth
... Same distribution c. Rock type and structure If continental drift is accurate, rock types should show a match between adjacent land masses ...
... Same distribution c. Rock type and structure If continental drift is accurate, rock types should show a match between adjacent land masses ...
Plate Tectonics Class Notes
... covered by oceanic crust. home to a wide variety of organisms. connected to one another. ...
... covered by oceanic crust. home to a wide variety of organisms. connected to one another. ...
Lithospheric plates - The Old Courthouse Museum Batemans Bay
... Enormous heat sources in the Earth’s deep interior, acquired during the very early history of the planet billions of years ago continue to drive present-day geological processes at the surface. The outer “skin” of the Earth, the lithospheric rocks (plates), “float” on top of the hotter, more plastic ...
... Enormous heat sources in the Earth’s deep interior, acquired during the very early history of the planet billions of years ago continue to drive present-day geological processes at the surface. The outer “skin” of the Earth, the lithospheric rocks (plates), “float” on top of the hotter, more plastic ...
4th Six Weeks Plate Tectonics and Topographic Maps Study Guide
... which is under the Earth’s crust 11. What is a topographic map? A topographic map shows elevations of land features using contour lines. 12. What are some specific features on a topographic map? Contour lines, compass, distance scale, symbols of land features 13. Why is it important to have compass ...
... which is under the Earth’s crust 11. What is a topographic map? A topographic map shows elevations of land features using contour lines. 12. What are some specific features on a topographic map? Contour lines, compass, distance scale, symbols of land features 13. Why is it important to have compass ...
earth history unit 3
... - Band Iron Formations (BIF): alternating layers of iron oxides and chert deposited in the sea (chert is a type of quartz) - The BIF are the principle source of iron ore around the world today. - After 2.0 BY there would be so much free oxygen (about 1%) that very minor dissolved iron would reach th ...
... - Band Iron Formations (BIF): alternating layers of iron oxides and chert deposited in the sea (chert is a type of quartz) - The BIF are the principle source of iron ore around the world today. - After 2.0 BY there would be so much free oxygen (about 1%) that very minor dissolved iron would reach th ...
Rifting of Pangea and Formation of Present Ocean Basins
... and moving across Tethys to accrete with Laurasia continued without interruption across the time boundary between the Paleozoic and Mesozoic. Some of these fragments had almost certainly rifted away from Gondwana but not yet reached Eurasia at the beginning of the Mesozoic, thus yielding a map simil ...
... and moving across Tethys to accrete with Laurasia continued without interruption across the time boundary between the Paleozoic and Mesozoic. Some of these fragments had almost certainly rifted away from Gondwana but not yet reached Eurasia at the beginning of the Mesozoic, thus yielding a map simil ...
Ocean Margins - Penn State York Home Page
... • Which typically has high biological productivity in the surface seawater above? Which margin type typically has a divergent plate boundary far away and nothing convergence of faulting in between? ...
... • Which typically has high biological productivity in the surface seawater above? Which margin type typically has a divergent plate boundary far away and nothing convergence of faulting in between? ...
The sea floor spreads apart at divergent boundaries.
... Mid-ocean ridges are the longest chain of mountains on Earth. Most of these ridges contain a rift valley along their center, as shown in the diagram below. When molten material rises from the asthenosphere, cold ocean water cools the rock until it becomes solid. As the plates move apart, new cracks ...
... Mid-ocean ridges are the longest chain of mountains on Earth. Most of these ridges contain a rift valley along their center, as shown in the diagram below. When molten material rises from the asthenosphere, cold ocean water cools the rock until it becomes solid. As the plates move apart, new cracks ...
Chapter 6 - Cloudfront.net
... 5 layers for the physical structure of Earth 1. Lithosphere – the layer that is made of the crust and the upper part of the mantle – another name for the crust (made of rock) – made up of tectonic plates that float on the asthenosphere ...
... 5 layers for the physical structure of Earth 1. Lithosphere – the layer that is made of the crust and the upper part of the mantle – another name for the crust (made of rock) – made up of tectonic plates that float on the asthenosphere ...
The Earth
... • Currently, the Pacific Ocean basin is shrinking (because the oceanic lithospheric plate is being forced back into the mantle) as other ocean basins expand. This process is violent, and produces ...
... • Currently, the Pacific Ocean basin is shrinking (because the oceanic lithospheric plate is being forced back into the mantle) as other ocean basins expand. This process is violent, and produces ...
Why is the drainage network of Southern Africa so asymmetrical?
... the west coast and flowing eastwards across the ar lah continent to the Indian Ocean. Ka oo Kar This drainage pattern is believed to have been escarpment imprinted on the region when the supercontinent Gondwana broke up. Africa formed the core 100 million years ago of Gondwana and was flanked in the ...
... the west coast and flowing eastwards across the ar lah continent to the Indian Ocean. Ka oo Kar This drainage pattern is believed to have been escarpment imprinted on the region when the supercontinent Gondwana broke up. Africa formed the core 100 million years ago of Gondwana and was flanked in the ...
Plate Tectonics II
... determine an accurate age for the Earth and to create a geologic timescale. • Proponent of the continental drift hypothesis. • Proposed that convection currents in the mantle pushed continents apart, creating new ocean basins in between. • Acknowledged that no hard evidence existed to support his hy ...
... determine an accurate age for the Earth and to create a geologic timescale. • Proponent of the continental drift hypothesis. • Proposed that convection currents in the mantle pushed continents apart, creating new ocean basins in between. • Acknowledged that no hard evidence existed to support his hy ...
Study Guide - Del Mar College
... - Band Iron Formations (BIF): alternating layers of iron oxides and chert deposited in the sea (chert is a type of quartz) - The BIF are the principle source of iron ore around the world today. - After 2.0 BY there would be so much free oxygen (about 1%) that very minor dissolved iron would reach th ...
... - Band Iron Formations (BIF): alternating layers of iron oxides and chert deposited in the sea (chert is a type of quartz) - The BIF are the principle source of iron ore around the world today. - After 2.0 BY there would be so much free oxygen (about 1%) that very minor dissolved iron would reach th ...
Magnetic strips in ocean-floor rocks
... The process of sea-floor spreading • Harry Hess believed that the mid-ocean ridges and deep-ocean trenches might help to explain how ocean floor was formed. • His hypothesis was ‘ in the process of sea-floor spreading, new ocean floor forms along Earth’s mid-ocean ridges, slowly moves outward acros ...
... The process of sea-floor spreading • Harry Hess believed that the mid-ocean ridges and deep-ocean trenches might help to explain how ocean floor was formed. • His hypothesis was ‘ in the process of sea-floor spreading, new ocean floor forms along Earth’s mid-ocean ridges, slowly moves outward acros ...
2002MidTermEPSC233Answers
... stromatolites that can be dated if they occur between layers of lava below and above them (so, absolute dates from the lava beds are known to be either earlier and later than the stromatolites). The BIFs (early Proterozoic), tillites (glacial deposits) and limestones (sign of warmer oceans) should o ...
... stromatolites that can be dated if they occur between layers of lava below and above them (so, absolute dates from the lava beds are known to be either earlier and later than the stromatolites). The BIFs (early Proterozoic), tillites (glacial deposits) and limestones (sign of warmer oceans) should o ...
Part 2…Plate Tectonics
... When did the theory of Plate Tectonics originate? How were people affected by tectonic activity? What is a “plate” defined as? What does the term “tectonic” mean? What theory of land movement preceded the current theory of plate tectonics? When did the super continent of Pangea first begin to break ...
... When did the theory of Plate Tectonics originate? How were people affected by tectonic activity? What is a “plate” defined as? What does the term “tectonic” mean? What theory of land movement preceded the current theory of plate tectonics? When did the super continent of Pangea first begin to break ...
box rock circus - Box Parish Council
... have been sea scorpions, up to 3m long, in the nearby sea. There were also coral reefs and fish. On land there were only mosses and primitive plants at the water’s edge. ...
... have been sea scorpions, up to 3m long, in the nearby sea. There were also coral reefs and fish. On land there were only mosses and primitive plants at the water’s edge. ...
Portraying the Earth
... Pangaea and Present Continents • Summary of the time line from Pangaea to the Present 450 million years – 5 continents- merged together to form Pangaea Next 200 million years; one continent 200 million years – Pangaea starts to break up– Laurasia & Gondwanaland- then to even smaller pieces ...
... Pangaea and Present Continents • Summary of the time line from Pangaea to the Present 450 million years – 5 continents- merged together to form Pangaea Next 200 million years; one continent 200 million years – Pangaea starts to break up– Laurasia & Gondwanaland- then to even smaller pieces ...
Geological history of Earth
The geological history of Earth follows the major events in Earth's past based on the geologic time scale, a system of chronological measurement based on the study of the planet's rock layers (stratigraphy). Earth formed about 4.54 billion years ago by accretion from the solar nebula, a disk-shaped mass of dust and gas left over from the formation of the Sun, which also created the rest of the Solar System.Earth was initially molten due to extreme volcanism and frequent collisions with other bodies. Eventually, the outer layer of the planet cooled to form a solid crust when water began accumulating in the atmosphere. The Moon formed soon afterwards, possibly as the result of a Mars-sized object with about 10% of the Earth's mass impacting the planet in a glancing blow. Some of this object's mass merged with the Earth, significantly altering its internal composition, and a portion was ejected into space. Some of the material survived to form an orbiting moon. Outgassing and volcanic activity produced the primordial atmosphere. Condensing water vapor, augmented by ice delivered from comets, produced the oceans.As the surface continually reshaped itself over hundreds of millions of years, continents formed and broke apart. They migrated across the surface, occasionally combining to form a supercontinent. Roughly 750 million years ago, the earliest-known supercontinent Rodinia, began to break apart. The continents later recombined to form Pannotia, 600 to 540 million years ago, then finally Pangaea, which broke apart 180 million years ago.The present pattern of ice ages began about 40 million years ago, then intensified at the end of the Pliocene. The polar regions have since undergone repeated cycles of glaciation and thaw, repeating every 40,000–100,000 years. The last glacial period of the current ice age ended about 10,000 years ago.