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Sedimentary Rock
Sedimentary rock is formed when minerals and other organic materials are deposited in layers by water, ice, wind, or mass movement such as mudslides.
799 Questions
What is the layer of sedimentary rock called?
A single layer with consistent characteristics is referred to as a stratum.
How can sedimentary rocks affect the landscape?
erosion affects coastal landscapes because all the rock erodes from the cliff and goes onto the beach
How do fossils end up in sedimentary rocks?
fossils are small living organisms that existed millions of years ago. They mostly have a shell which is the fossil that you can sea. Sedimentary rock is formed when lots of small particles and pieces of rock and often dead organisms, (the fossils) drift down to the sea bed and over millions of years get compressed together to form the rock. The fossil that you see was once a living shelled organism which dies and was preserved as the sedimentary rock formed
What is one way sedimentary rocks have been used throughout?
People have used sedimentary rock througout for many different purposes, including for tools and building materials.
What are small rounded stones that have been cemented together called?
egg rocks we have them in front garden!
What is the cement of sedimentary rocks?
Sandstone is a sedimentary rock mainly composed of small sand size grains of quartz and/or feldspar. It is often used for construction and also to make items used in the house.
The oldest rocks of terrestrial origin are between 4.2-4.3 billion years old, and the oldest rocks of extraterrestrial origin are around 4.5-4.6 billion years old. The rocks of the oceanic crust are less than 200 million years old, some being as fresh as a new baby. Continental rock, on average is much older than oceanic rock, as it is not subducted in the process of plate tectonics.
How do Sedimentary rocks formed and what are they made of?
Sedimantary Rocks
These rocks are formed from th ehot lava
Jk jk i was bored i dont reall know what they mean and i real HATE STAaR
How is sedimentary rocks made?
As you may or may not know, sedimentary rock is formed by weathering, erosions, and tiny rock particles gathering, so on and so forth. So, as the rock had been forming, the fossil may have formed because any old organism may have stepped in it during formation. Probably, the organism may have stepped in a mud puddle and left a footprint. As the mud were to grow older and older, it would dry out and harden as dirt begins to pile on it. After 100's or maybe 1000's of years later, a sedimentary rock would form with the fossil inside it. If you need any further help, please e-mail me @ Yhomelessman@aim.com
What rock is formed by the process of lithification?
Is produced, transport, deposited and lithified the process of sedimentary rock
What has the smallest grain size shale siltsone sandstone or Conglomerate?
Smallest
- shale
- siltstone
- sandstone
- conglomerate
How does limestone react when exposed to weak acids?
If the water contains any carbonic acid (if its rain water) then it will slowly dissolve/disintegrate the limestone.
What is layers of sedimentary rocks?
Sedimentary is an adjective referring to material deposited by water, wind, or glaciers. Sedimentary rock covers a large part of the surface area of the continents. However, they are the "topping" and as they do not go deep in terms of the depth of the planet, they do not make up a large percentage of the total rocks, the three main kinds of rocks being sedimentary, igneous, and metamorphic. The three main types of sedimentary rock are clastic, biogenic or organic, and chemical or precipitate. After the sediments are deposited they build into layers. This is called lithification. Eventually they will form into rock if certain conditions are met. This process is known as diagenesis. As the question makes note of, they tend to form in layers, one atop the other. Sediments can be formed during a long time, such as shells or silt at the bottom of a lake or more quickly during floods. Sedimentary rocks usually have a high Calcium content, which acts as a form of cement, thus making each layer more solid. Chalk, limestone, sandstone, and shale are examples of sedimentary rock.
Limestone can be biogenic or chemical.
Coal is an example of biogenic sedimentary rocks.
Halite and gypsum are precipitate or chemical sedimentary rocks.
Igneous rocks are formed from volcanic eruptions.
Metamorphic are formed from the other two (igneous and sedimentary).
Scientists who believe in evolutionism, in varied fields such as geology, paleontology, and evolutionary biology, interpret sedimentary rock layers as layers of sediment (usually silt, sand or sea shells) deposited over millions of years. They are so interpreted because layers in the same location contain increasingly complex life forms, reflecting how life is inferred to have evolved according to the Theory of Evolution. Sedimentary rock layers can also be dated through the relative frequencies of certain isotopes, with older rocks at the bottom of the deposits.
Scientists who believe in Creationism, in the same variety of fields, believe they correspond to layers of sediment deposited by the Noachin (aka Noah's) flood and formed by the massive weight of the water.
Creationists do not accept the Earth being billions of years old, because they take the descriptions from the Bible literally and interpret the scientific data differently. They consider evolutionism as not explaining the abundance of fossils in the sedimentary layers as well as the flood does because fossils need quick burial to form. They consider that layers being laid down over a long period of time from erosion and other natural actions do not account for this as well as the the Noachin Flood does.
Both are theories and currently neither has been or can be proven scientifically. Both have anomalies. Both are plausible explanations unless an individual subscribes to one of the belief systems that disqualifies the other's explanation.
Since they are both theories, there are some who want Intelligent Design (belief that the universe was designed and created, although not necessarily by a god) to be considered as a plausible explanation as well as evolution in the teaching of science in schools. This movement claims that schools teach evolution as fact rather than theory thus necessitating the need for alternative explanations.
To go into the two systems of belief is beyond the scope of this answer to "What_are_the_Sedimentary_rock_layers". What they are I hope has been satisfactorily explained. How they formed is narrowed down to two main classes of thought, both with great minds putting forth excellent propositions. Anyone who wishes to investigate their formation should research Intelligent Design, Evolution, and Creation. When researching creation for something scientific as opposed to a moral or religious question, one should remember to concentrate on scientists, not preachers, to get the unbiased empirical data needed.
What is the term for sedimentary rock that is composed of material evaporated for seawater?
A sedimentary rock that is composed of material evaporated from seawater is described as chemical.
A sedimentary rock that is composed of material evaporated from seawater is described as chemical.
What part of the sedimentary of rock is the oldest?
Protolith is a term used to describe the parent rock of a metamorphic rock. Conglomerate is a sedimentary rock that can be composed of clasts of sedimentary, igneous, or metamorphic rocks, or any number of combinations of all.
Do sedimentary rocks form from the remains of living things?
Some sedimentary rocks are formed at least partially of the remains of living things, but many are not. Fossil-rich rocks, coal, and some types of limestone are composed partly of the remains of organisms. Clastic sedimentary rocks such as shale and sandstone are made from sediment that has weathered out of pre-existing rock.
What is the process by which scientists match sedimentary strata to other rocks of different ages?
Its position in the stratigraphic column, particularly if there are any index fossils.
if that fails, then radiometric dating techniques may be appropriate. There are a wide variety of radioisotopes to be used ranging from 14C (5700 years half life) through K-Ar, and to the various uranium series.
Is Ayers rock man made or a natural site?
Yes. Ayers Roxk, now known by its indigenous name of Uluru, is a landmark of Australia, found in central Australia. It is an inset erg, and the world's second largest monolith (not the largest, as is commonly believed, with the largest being Mt Augustus, also in Austalia).
Where do sedimentary rocks most form?
They have been formed throughout geological time since the Earth had cooled sufficiently to form a solid crust, and for its load of water to condense and form rivers and seas. It's a continuing process. For all the older rock being eroded in one place, new sedimentary rock is being formed elsewhere.
How are sedimentary rocks useful as records of past time?
Sedimentary rock is used in:
- Gravel and roadbeds
- Concrete aggregate
- Production of cement
- Production of steel
- Production of glass
- Medicines
- Makeup
- Toothpaste
- Building components
- The study of Earth's history
- The production of brick
- Production of pottery and ceramics
- Paints
- Drywall
- Plaster
Sandstone is a clastic sedimentary rock composed of sand sized minerals, found in and near sand. Limestone is a sedimentary rock made up of the minerals calcite and aragonite, found in and near water.
What process causes metamorphic rock to change into sedimentary rock?
Both weathering and erosion can break down rocks into smaller fragments by a number of means.
