| Analysis of the search query | most sedimentary rocks found on continents were formed underwater |
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Top competitors on query "most sedimentary rocks found on continents were formed underwater"
Rock and the Rock Cycle - Windows to the Universe
http://www.windows2universe.org/earth/geology/rocks_intro.html Competition: low
How does the rock cycle work? Rock Eating Bacteria Found at the Bottom of the Sea Newly-Found Rock May Prove Antarctica and North America Were Connected Earth as a System Storms Shaped the Himalayan Mountains Last modified August 19, 2005 by Jennifer Bergman. RSS Feeds Science Blogs Perspectives on Earth and Space Science Education Real Climate: climate science from climate scientists EPA Greenversations Global Learning and Observations to Benefit the Environment Citizen Science Buzz Rock and the Rock Cycle Rocks are always on the move through the rock cycle! Click on parts of this rock cycle diagram to find out more about sedimentary rocks igneous rocks metamorphic rocks and how they change over geologic time! All rock (except for meteorites!) that is on Earth today is made of the same stuff as the rocks that dinosaurs and other ancient life forms walked, crawled or swam over
USGS Geology in the Parks
http://geomaps.wr.usgs.gov/parks/province/appalach.html Competition: low
As the Appalachians rose some streams downcut so rapidly that they sliced through resistant rocks rock layers and geologic structures, rather than establishing new courses that flowed around them. The birth of the Appalachian ranges, some 480 million years ago, marks the first of several mountain building plate collisions that culminated in the construction of the supercontinent Pangea with the Appalachians near the center
http://www.nature.nps.gov/geology/parks/grca/age/index.cfm Competition: low
Relative dating, index fossils, and geologic correlation were used to determine the geologic age of the Layered Paleozoic Rocks, and numeric ages were then inferred. It is important to note that deposition of sediments was not continuous in the Grand Canyon region during the Paleozoic (between 525 and 270 m.y.), leaving significant gaps in age between some adjacent rock layers
http://www.geocraft.com/WVFossils/collision.html Competition: low
The resultant mountain range that emerged ran generally east-west near 0 degrees latitude (equator) and may have been one of the greatest mountain ranges the world has seen, although subsequent continental movements and complete erosion have since obliterated all traces of it's highlands. Precipitation falling on the slopes of this great equatorial mountain range caused erosion and created rivers that carried sediments to it's adjacent coastal regions
http://geology.com/rocks/granite.shtml Competition: low
However, granite is frequenly selected because it is a prestige material, used in projects to produce impressions of elegance, durability and lasting quality. Most of the granite dimension stone produced in the United States comes from high quality deposits in five states: Massachusetts, Georgia, New Hampshire, South Dakota and Idaho
http://www.indiana.edu/~geol105/1425chap5.htm Competition: low
metamorphic rocks with chlorite tend to be of greenish color, and therefore the name greenschist instead of chlorite schist may be used (its the older name). Depending on grain size they are subdivided into conglomerate (grain size larger than 2 mm), sandstone (size between 2 mm and 0.0625 mm), and shale (mudstone)
http://creation.com/flat-gaps Competition: low
Where was it during this time? I have always wondered how they answered this question but have never before heard it asked, which is why I keep thinking that I might be asking a really silly question. If the many millions of years illustrated by the thickness of the black layers had actually occurred the configuration of the white layers should be highly irregular
Glossary of Terms: S
http://www.physicalgeography.net/physgeoglos/s.html Competition: low
In normally consists of three components: bed load (pebbles and sand which move along the stream bed without being permanently suspend in the flowing water), suspended load (silts and clays in suspension) and dissolved load (material in solution). Snowfall is most common with the frontal lifting associated with mid-latitude cyclones during fall, winter, and spring months when air temperatures are below freezing
rock: Definition, Synonyms from Answers.com
http://www.answers.com/topic/rock Competition: low
Sedimentary rocks made up of angular particles derived from other rocks are said to have a clastic texture, in contrast to pyroclastic sediments, which are particles of volcanic origin. The nature of mining processes creates a potential negative impact on the environment both during the mining operations and for years after the mine is closed
Untitled Document
http://www2.nature.nps.gov/views/Classic/Sites/DETO/HTML/ET_Sedimentary.htm Competition: low
In the picture below, the yellow colored Hulett Sandstone layer of the Sundance Formation forms a cliff above the gray, covered slope formed in the underlying mudstones of the Stockade Beaver layer. It was deposited in a fairly low energy environment on a flat, hot desert plain near the ocean similar to some of the environments near the Persian Gulf in the Middle East today
Basalt - Wikipedia, the free encyclopedia
http://en.wikipedia.org/wiki/Basalt Competition: low
These are: Blueschist facies Eclogite facies Granulite facies Greenschist facies Zeolite facies Metamorphosed basalts are important hosts for a variety of hydrothermal ore deposits, including gold deposits, copper deposits, volcanogenic massive sulfide ore deposits and others. Volcanic glass may be present, particularly as rinds on rapidly chilled surfaces of lava flows, and is commonly (but not exclusively) associated with underwater eruptions
http://pubs.usgs.gov/gip/fossils/rocks-layers.html Competition: low
Because of the Law of Original Horizontality, we know that sedimentary rocks that are not horizontal either were formed in special ways or, more often, were moved from their horizontal position by later events, such as tilting during episodes of mountain building. This Law of Superposition is fundamental to the interpretation of Earth history, because at any one location it indicates the relative ages of rock layers and the fossils in them
Deposition and Sedimentary Rock Formation
http://www.mountainnature.com/geology/Deposition.htm Competition: low
If you'd like a taste of the past, take a walk on the Georgetown trail at the Canmore Nordic Centre, or drive up to the old site of Bankhead and either walk the old townsite or climb the C-Level Cirque trail. Mineral Type Since sedimentary rocks are the result of a sequential process of erosion and deposition, we can often find a mixture of many minerals trapped in their stony facade
Sedimentary Rocks
http://www.tulane.edu/~sanelson/eens1110/sedrx.htm Competition: low
Non-sorted Sediment - Sediment showing a mixture of grain sizes results from such things as rockfalls, debris flows, mudflows, and deposition from melting ice. lake deposits wherein coarse sediment is deposited in summer months and fine sediment is deposited in the winter when the surface of the lake is frozen
http://geology.com/rocks/shale.shtml Competition: low
An oxygen-poor environment also provides the proper conditions for the formation of sulfide minerals such as pyrite, another important mineral found in most black shales. Unconventional Oil and Natural Gas In the late 1990s natural gas drilling companies developed new methods for liberating oil and natural gas that is trapped within the tiny pore spaces of shale
sedimentary rock
http://universalium.academic.ru/248441/sedimentary_rock Competition: low
Such a scheme is well suited for the description of sediments because it gives equal significance to size ratios, whether they relate to gravel, sand, silt, or clay. Sedimentary rocks are the most common rocks exposed on the Earth's surface but are only a minor constituent of the entire crust, which is dominated by igneous and metamorphic rocks
About Igneous Rocks
http://geology.about.com/cs/basics_roxmin/a/aa011804a.htm Competition: low
Because they solidified from a fluid state, igneous rocks tend to have a uniform fabric without layers, and the mineral grains are packed together tightly. They generally talk about basaltic and granitic or granitoid rocks among themselves and out in the field, because it takes laboratory work to determine an exact rock type according to the official classifications
Sedimentary Rocks
http://library.thinkquest.org/J002289/sed.html Competition: low
Classified by texture and composition Often contains fossils May react with acid Often has layers, flat or curved Usually composed of pieces cemented or pressed together Has great color variety Particle size may be the same or vary Usually has pores between pieces May have cross-bedding, mud cracks, worm burrows, raindrop impressions Here's a checklist of some common sedimentary rocks and their characteristics
Sedimentary Rocks
http://www.trinity.edu/gkroeger/GEOS1307/notes/sediment.htm Competition: low
Classification and Rock Names Detrital Rocks are classified primarily by the size of the clasts: Breccia - large (gravel sized or larger) angular clasts Conglomerate - large (gravel sized or larger) rounded clasts Quartz Sandstone - sand sized clasts, well sorted, composed primarily of quartz Arkose - sand sized clasts, mostly quartz with significant potassium feldspar. We will divide sedimentary rocks into two broad categories: Detrital Rocks - these rocks have a clastic texture, that is they are composed of fragments compressed and cemented together
How Rocks Are Formed
http://www.rocksforkids.com/RFK/howrocks.html Competition: low
Just like your DNA determines the colour of your eyes, how tall you will get to be and the shape of your bones, the chemicals that a mineral is made of determines what shape it gets to be. Soil has many names including: clay, silt, mud, dirt, topsoil, dust, potting soil and humus THE ROCK CYCLE Rocks are constantly being formed, worn down and then formed again
Sedimentary rock - Wikipedia, the free encyclopedia
http://en.wikipedia.org/wiki/Sedimentary_rock Competition: low
When the bottom of the sea has a small inclination, for example at the continental slopes, the sedimentary cover can become unstable, causing turbidity currents. The study of sedimentary rocks and rock strata provides information about the subsurface that is useful for civil engineering, for example in the construction of roads, houses, tunnels, canals or other constructions
Rock and the Rock Cycle - Windows to the Universe
How does the rock cycle work? Rock Eating Bacteria Found at the Bottom of the Sea Newly-Found Rock May Prove Antarctica and North America Were Connected Earth as a System Storms Shaped the Himalayan Mountains Last modified August 19, 2005 by Jennifer Bergman. RSS Feeds Science Blogs Perspectives on Earth and Space Science Education Real Climate: climate science from climate scientists EPA Greenversations Global Learning and Observations to Benefit the Environment Citizen Science Buzz Rock and the Rock Cycle Rocks are always on the move through the rock cycle! Click on parts of this rock cycle diagram to find out more about sedimentary rocks igneous rocks metamorphic rocks and how they change over geologic time! All rock (except for meteorites!) that is on Earth today is made of the same stuff as the rocks that dinosaurs and other ancient life forms walked, crawled or swam over
USGS Geology in the Parks
As the Appalachians rose some streams downcut so rapidly that they sliced through resistant rocks rock layers and geologic structures, rather than establishing new courses that flowed around them. The birth of the Appalachian ranges, some 480 million years ago, marks the first of several mountain building plate collisions that culminated in the construction of the supercontinent Pangea with the Appalachians near the center
Relative dating, index fossils, and geologic correlation were used to determine the geologic age of the Layered Paleozoic Rocks, and numeric ages were then inferred. It is important to note that deposition of sediments was not continuous in the Grand Canyon region during the Paleozoic (between 525 and 270 m.y.), leaving significant gaps in age between some adjacent rock layers
The resultant mountain range that emerged ran generally east-west near 0 degrees latitude (equator) and may have been one of the greatest mountain ranges the world has seen, although subsequent continental movements and complete erosion have since obliterated all traces of it's highlands. Precipitation falling on the slopes of this great equatorial mountain range caused erosion and created rivers that carried sediments to it's adjacent coastal regions
However, granite is frequenly selected because it is a prestige material, used in projects to produce impressions of elegance, durability and lasting quality. Most of the granite dimension stone produced in the United States comes from high quality deposits in five states: Massachusetts, Georgia, New Hampshire, South Dakota and Idaho
metamorphic rocks with chlorite tend to be of greenish color, and therefore the name greenschist instead of chlorite schist may be used (its the older name). Depending on grain size they are subdivided into conglomerate (grain size larger than 2 mm), sandstone (size between 2 mm and 0.0625 mm), and shale (mudstone)
Where was it during this time? I have always wondered how they answered this question but have never before heard it asked, which is why I keep thinking that I might be asking a really silly question. If the many millions of years illustrated by the thickness of the black layers had actually occurred the configuration of the white layers should be highly irregular
Glossary of Terms: S
In normally consists of three components: bed load (pebbles and sand which move along the stream bed without being permanently suspend in the flowing water), suspended load (silts and clays in suspension) and dissolved load (material in solution). Snowfall is most common with the frontal lifting associated with mid-latitude cyclones during fall, winter, and spring months when air temperatures are below freezing
rock: Definition, Synonyms from Answers.com
Sedimentary rocks made up of angular particles derived from other rocks are said to have a clastic texture, in contrast to pyroclastic sediments, which are particles of volcanic origin. The nature of mining processes creates a potential negative impact on the environment both during the mining operations and for years after the mine is closed
Untitled Document
In the picture below, the yellow colored Hulett Sandstone layer of the Sundance Formation forms a cliff above the gray, covered slope formed in the underlying mudstones of the Stockade Beaver layer. It was deposited in a fairly low energy environment on a flat, hot desert plain near the ocean similar to some of the environments near the Persian Gulf in the Middle East today
Basalt - Wikipedia, the free encyclopedia
These are: Blueschist facies Eclogite facies Granulite facies Greenschist facies Zeolite facies Metamorphosed basalts are important hosts for a variety of hydrothermal ore deposits, including gold deposits, copper deposits, volcanogenic massive sulfide ore deposits and others. Volcanic glass may be present, particularly as rinds on rapidly chilled surfaces of lava flows, and is commonly (but not exclusively) associated with underwater eruptions
Because of the Law of Original Horizontality, we know that sedimentary rocks that are not horizontal either were formed in special ways or, more often, were moved from their horizontal position by later events, such as tilting during episodes of mountain building. This Law of Superposition is fundamental to the interpretation of Earth history, because at any one location it indicates the relative ages of rock layers and the fossils in them
Deposition and Sedimentary Rock Formation
If you'd like a taste of the past, take a walk on the Georgetown trail at the Canmore Nordic Centre, or drive up to the old site of Bankhead and either walk the old townsite or climb the C-Level Cirque trail. Mineral Type Since sedimentary rocks are the result of a sequential process of erosion and deposition, we can often find a mixture of many minerals trapped in their stony facade
Sedimentary Rocks
Non-sorted Sediment - Sediment showing a mixture of grain sizes results from such things as rockfalls, debris flows, mudflows, and deposition from melting ice. lake deposits wherein coarse sediment is deposited in summer months and fine sediment is deposited in the winter when the surface of the lake is frozen
An oxygen-poor environment also provides the proper conditions for the formation of sulfide minerals such as pyrite, another important mineral found in most black shales. Unconventional Oil and Natural Gas In the late 1990s natural gas drilling companies developed new methods for liberating oil and natural gas that is trapped within the tiny pore spaces of shale
sedimentary rock
Such a scheme is well suited for the description of sediments because it gives equal significance to size ratios, whether they relate to gravel, sand, silt, or clay. Sedimentary rocks are the most common rocks exposed on the Earth's surface but are only a minor constituent of the entire crust, which is dominated by igneous and metamorphic rocks
About Igneous Rocks
Because they solidified from a fluid state, igneous rocks tend to have a uniform fabric without layers, and the mineral grains are packed together tightly. They generally talk about basaltic and granitic or granitoid rocks among themselves and out in the field, because it takes laboratory work to determine an exact rock type according to the official classifications
Sedimentary Rocks
Classified by texture and composition Often contains fossils May react with acid Often has layers, flat or curved Usually composed of pieces cemented or pressed together Has great color variety Particle size may be the same or vary Usually has pores between pieces May have cross-bedding, mud cracks, worm burrows, raindrop impressions Here's a checklist of some common sedimentary rocks and their characteristics
Sedimentary Rocks
Classification and Rock Names Detrital Rocks are classified primarily by the size of the clasts: Breccia - large (gravel sized or larger) angular clasts Conglomerate - large (gravel sized or larger) rounded clasts Quartz Sandstone - sand sized clasts, well sorted, composed primarily of quartz Arkose - sand sized clasts, mostly quartz with significant potassium feldspar. We will divide sedimentary rocks into two broad categories: Detrital Rocks - these rocks have a clastic texture, that is they are composed of fragments compressed and cemented together
How Rocks Are Formed
Just like your DNA determines the colour of your eyes, how tall you will get to be and the shape of your bones, the chemicals that a mineral is made of determines what shape it gets to be. Soil has many names including: clay, silt, mud, dirt, topsoil, dust, potting soil and humus THE ROCK CYCLE Rocks are constantly being formed, worn down and then formed again
Sedimentary rock - Wikipedia, the free encyclopedia
When the bottom of the sea has a small inclination, for example at the continental slopes, the sedimentary cover can become unstable, causing turbidity currents. The study of sedimentary rocks and rock strata provides information about the subsurface that is useful for civil engineering, for example in the construction of roads, houses, tunnels, canals or other constructions
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