What rock type is the most common setting for caves formed by dissolution of a rock quizlet?
As previously noted the largest and most common caves are those formed by dissolution of limestone or dolomite. Limestone is composed mostly of calcium carbonate in the form of the mineral calcite. Dolomite rock consists of calcium magnesium carbonate the mineral dolomite.
What is the main type of weathering illustrated by this weathered limestone?
Weathering is the breakdown of rock by physical chemical or biological processes. Limestone areas are predominantly affected by chemical weathering when rainwater which contains a weak carbonic acid reacts with limestone. This causes the limestone to dissolve.
What do these curved ridges eskers suggest happened on the landscape?
What do these curved ridges (eskers) suggest happened on the landscape? Meltwater channels were below or within a glacier. humans mine them as a source of gravel. the sides have a higher concentration of rocks and other debris.
What type of rock is the most common setting for caves formed by dissolution of a rock?
limestone As previously noted, the largest and most common caves are those formed by dissolution of limestone or dolomite. Limestone is composed mostly of calcium carbonate in the form of the mineral calcite. Dolomite rock consists of calcium magnesium carbonate, the mineral dolomite.
Which of the following features is formed by the collapse of caves?
Sinkholes. A sinkhole is a depression or hole formed when the land surface sinks due to underground bedrock dissolution or cave collapse.
How does physical weathering change the surface area of rocks and affect the rate of chemical weathering?
Mechanical weathering increases the overall surface area when it breaks down the rock into smaller fragnments. Increased surface area provides more surface for chemical weathering to attack the rock, allowing chemical weathering to speed up.
How is weathering important to the process of erosion transportation and deposition?
Once the rock has been weakened and broken up by weathering it is ready for erosion. Erosion happens when rocks and sediments are picked up and moved to another place by ice, water, wind or gravity. Mechanical weathering physically breaks up rock.
What are glaciers describe an erosional and depositional features caused by glaciers?
Glaciers cause erosion by plucking and abrasion. Valley glaciers form several unique features through erosion, including cirques, arêtes, and horns. Glaciers deposit their sediment when they melt. Landforms deposited by glaciers include drumlins, kettle lakes, and eskers.
What is this bowl shaped glacially carved feature quizlet?
cirque. a bowl-shaped hollow eroded by a glacier.
Why do we use sedimentary rocks in determining the history of earth instead of metamorphic rocks?
Sedimentary rocks tell us about past environments at Earth's surface. Because of this, they are the primary story-tellers of past climate, life, and major events at Earth's surface. Each type of environment has particular processes that occur in it that cause a particular type of sediment to be deposited there.
Which material accumulated from the remains of plants and animals can produce limestone?
For instance, most limestone forms at the bottom of the ocean from the precipitation of calcium carbonate and the remains of marine animals with shells.
What are karst features?
Karst is a type of landscape where the dissolving of the bedrock has created sinkholes, sinking streams, caves, springs, and other characteristic features. Karst is associated with soluble rock types such as limestone, marble, and gypsum.
Which feature would you expect to find in a region with karst topography?
Areas of karst topography are characterized by natural features such as sinkholes, which often are seen as circular ponds or depressions, particularly from the air. Other common karst features are caverns, springs, and few or no continuous surface streams (see figure).
How does mechanical weathering contribute to chemical weathering How can we demonstrate the fact that chemical weathering hasten mechanical weathering?
How can mechanical weather speed up chemical weathering? Mechanical weathering increases the overall surface area when it breaks down the rock into smaller fragnments. Increased surface area provides more surface for chemical weathering to attack the rock, allowing chemical weathering to speed up.
When rocks undergo chemical changes as the result of chemical reactions it is called?
2 Chemical weathering. Chemical weathering involves the interaction of rock with mineral solutions (chemicals) to change the composition of rocks. In this process, water interacts with minerals to create various chemical reactions and transform the rocks.
Which of the following physical processes pertains to the transport of soil and other surface materials from one location to another?
Sediment moves from one place to another through the process of erosion. Erosion is the removal and transportation of rock or soil.
What is a glacial feature?
Glacier Landforms Glaciers carve a set of distinctive, steep-walled, flat-bottomed valleys. U-shaped valleys, fjords, and hanging valleys are examples of the kinds of valleys glaciers can erode.
How does erosion by continental glaciers different from erosion by valley glaciers?
Continental glaciers are huge. They may spread out over much of a continent. Valley glaciers are long and narrow. They form in mountains and flow through mountain river valleys.
What is a bowl shaped basin carved by a glacier on the side of a mountain?
Cirque. A bowl-shaped, amphitheater-like depression eroded into the head or the side of a glacier valley. Typically, a cirque has a lip at its lower end.
What carved this U-shaped valley?
Valley glaciers Valley glaciers carve U-shaped valleys, as opposed to the V-shaped valleys carved by rivers. During periods when Earth's climate cools, glaciers form and begin to flow downslope. Often, they take the easiest path, occupying the low V-shaped valleys once carved by rivers.
What is the collective term for all the chemical physical and biological changes that take place after sediments are deposited?
Facies is a collective term for all of the chemical, physical, and biological changes that take place after sediments are deposited during and after lithification. 28.
How are minerals formed in igneous and metamorphic rocks?
In igneous and metamorphic rocks minerals may occur in the cracks, crevices, faults or joints. The smaller occurrences are called Veins and the larger is called Lodes. In most cases, they are formed when minerals in liquid/molten and gaseous forms are forced upward through cavities towards the earth's surface.
How are sedimentary rocks formed from igneous rocks?
On the surface, weathering and erosion break down the igneous rock into pebbles, sand, and mud, creating sediment, which accumulates in basins on the Earth's surface. As successive layers of sediment settle on top of one another, the sediment near the bottom is compressed, hardens, and forms sedimentary rock.
How are sedimentary rocks formed from pre-existing rocks?
Sedimentary rocks are formed from deposits of pre-existing rocks or pieces of once-living organism that accumulate on the Earth's surface. If sediment is buried deeply, it becomes compacted and cemented, forming sedimentary rock.
Where are the landforms formed in limestone called karst?
The term karst is derived from the German form of the Slav word, krs or kras , meaning rock. The original use of the word was as a regional name for the area of massive limestone country to the north and south of the port of Rjeka in Yugoslavia, a district of many rocks, sinkholes and underground streams.
What are some of the characteristic erosional and depositional features found in a karst landscape?
| Karst Topography – Erosional Landforms | |
|---|---|
| Pools | An opening at the top with water collected in the void of the surface with varying depth |
| Lapies | It is formed due to differential solution activity along parallel to sub-parallel joints. They are also called grooved, fluted and ridge-like features in an open limestone field. |
What is a karst feature?
Karst is a type of landscape where the dissolving of the bedrock has created sinkholes, sinking streams, caves, springs, and other characteristic features. Karst is associated with soluble rock types such as limestone, marble, and gypsum.
What are the surface features of karst region?
Surface Karst Features
- Dolines. Dolines are closed depressions in karst areas, which are usually circular in outline. …
- Dry Valleys. In karst areas, most of the drainage is underground. …
- Grikes. …
- Solution Flutes. …
- Streamsinks. …
- Resurgence. …
- Blind Valley. …
- Steephead.
What evidence is shown on this photograph that suggests the slumgullion landslide has not or is not moving rapidly?
What evidence is shown on this photograph that suggests the Slumgullion landslide has not or is not moving rapidly? Trees are growing on the landslide material.
How the breakdown of rock through physical weathering can speed up the rate of chemical weathering?
Figure 6.5: As weathering breaks down a rock into smaller particles, the surface area increases so that the process of chemical weathering is accelerated.