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Why is the Carboniferous period called the Carboniferous period?
Carboniferous means carbon bearing. Large coal deposits were laid down then, hence the name.
Where are large deposits of oil located in Europe?
The North Sea
What ancient environment is the most likely inferred by the large rock salt deposits in Syracuse New York area?
In Rochester, NY, the gypsum and salt deposits were made in the Cenozoic sedimentation period.
Does the earth produce water?
I believe all water on the planet came from space from the glacial belt. Life formed in the stagnant "primordial pools", Then over millions of years Earth traversed as part of its orbit through the glacial belts until we have the oceans we have today. The world becoming two thirds water had a larger mass so gravity pulled it away from the glacial belt so no more water. Maybe that change of mass killed the dinosaurs? Maybe instead of one huge meteor in Mexico it was thousands of glacial asteroids and possible one so large it caused the strike in bay of Mexico too large to evaporate in Earths atmosphere. Could that be what happened ? Gravity is a constant now but smaller planet less gravity. I find it hard to believe such huge animals could walk the earth with the gravity forces we know.
How can glaciers cause disposition?
When glaciers move as they grow, they grind the ground and rock underneath them. These pieces are pushed forward while they grow. When they final begin to melt, the water that is in the glaciers flows out from underneath them. This often carried sand and small bits of gravel. As they melted further and faster, larger gravel and stones wash out. Finally very large rocks and boulders are left behind. All of these are called deposition.
What are large deposits of boulders called?
The debris of boulders eroded and carried down by glaciers will eventually form moraines (mounds) where the front of the glacier melts and retreats, leaving the debris behind. Moraines can be high and wide enough to form a dam, behind which glacial melt water is trapped and lakes are formed.
The boulders sand clay and silt that drop from a glacier when it slows down are called?
The boulders, sand, clay, and silt that are deposited by a glacier as it slows down and melts are called glacial till. This material is unsorted and varies in size, ranging from large boulders to fine silt. Glacial till is often found as moraines, which are accumulations of debris along the edges or at the terminus of a glacier.
How can you identify the deposited materials that were left there directly by a glacial ice deposits?
You can identify deposited materials left by glacial ice deposits based on their composition, size, and sorting. Glacial deposits often consist of a mix of sediment sizes (clay to large boulders), show little sorting, and may have scratches or striations caused by the movement of ice. Additionally, the presence of erratics (rocks different from the surrounding material) can also indicate glacial deposition.
Are there glacial erratics or boulders in Georgia?
Yes, there are glacial erratics and boulders in Georgia. These large rocks were transported by glaciers during the last Ice Age and are now found in various parts of the state, particularly in the northern regions. They serve as evidence of the region's glacial history.
What are very large striations called?
Glacial Cracks
What large boulders carried along by a river?
Large boulders and smaller rocks can be carried by a river. When rocks and sediment are displaced, it's called erosion.
What is large out of place boulders?
Large out-of-place boulders, often referred to as "erratics," are significant rock fragments that have been transported from their original location by natural forces, such as glacial movement, water flow, or landslides. These boulders can differ significantly in composition from the surrounding geological materials, indicating their origins from distant areas. Erratics provide important clues about past geological events and the processes that shaped the landscape. They are commonly found in glacial regions, where they were left behind as glaciers retreated.
Depressions left by melted blocks of ice in glacial deposits?
The depressions left by melted blocks of ice in glacial deposits are called kettle holes. They are circular or oval-shaped depressions that form when large chunks of ice left behind by a retreating glacier become buried in sediment. When the ice eventually melts, it creates a hole in the ground.
Where are large deposits of glacial loess primarily found?
Large deposits of glacial loess are primarily found in North America, Europe, and Asia. These regions were covered by ice sheets during the last ice age, and loess was deposited as the glaciers retreated, leaving behind fertile soil suitable for agriculture.
What are the common sediments produced by glaciers?
Common sediments produced by glaciers include till (unsorted mixture of rocks and sediment), moraine (deposits of till), outwash (sorted sediments deposited by meltwater), and glacial erratics (large boulders transported by glaciers from distant locations).
An isolated boulder left behind by a glacier?
This isolated boulder left behind by a glacier is called a glacial erratic. Glacial erratics are large rocks that are carried by glaciers and deposited in a different location when the glacier melts. They can vary in size from small pebbles to massive boulders and are often composed of different rock types than the surrounding landscape.
How glacial spillways are formed?
Glacial spillways are formed when meltwater from a retreating glacier creates a pathway through moraines or other glacial deposits. As the glacier retreats, the trapped water is released, carving out a channel that can carry large volumes of water downstream. These spillways are important for draining glacial lakes and preventing catastrophic flooding.
