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What is the main type of rock in oceanic crust?
The main type of rock in oceanic crust is basalt. Basalt is a fine-grained igneous rock formed from the rapid cooling of lava at or near the Earth's surface. It is dark in color and rich in minerals like pyroxene and plagioclase feldspar.
What is relitave dating?
relative dating is when you give an estimate date.
Where do white rocks come from?
White rocks can come from a variety of sources, such as quartz, marble, or limestone. These rocks can form naturally through the deposition of minerals or chemical reactions in the Earth's crust. They can also be artificially produced through processes like grinding or crushing.
What is absolute geologic time?
Absolute geologic time refers to the chronological age of a rock or event, typically measured in years. It is determined using radiometric dating techniques, which allow for precise dating of rocks and fossils based on the decay of radioactive isotopes. This provides a more accurate and quantitative way to establish the timing of geologic events in Earth's history.
What are the layers of earht?
The Earth consists of four main layers: the inner core, outer core, mantle, and crust. The inner core is solid and composed mainly of iron and nickel. The outer core is also composed of iron and nickel, but it is in a liquid state. The mantle is a semi-solid layer made up of silicate rocks, and the crust is the Earth's thin, solid outermost layer.
A relative age of the rocks of the earths crust can be determined by using the laws of?
superposition a&c- Jackie
How is earths geolgic history determined?
it is determined by studying the relative and absolute ages of rocks and fossils
What is the earths under crust surrounded by?
Earths under crust surrounded by Upper Mantle (35-60 km) .The mantle is composed of sillicate rocks that are rich in iron and magnesium relative to the overlying crust.
What are the rocks that make up the earths crust?
the crust and the core
What does rocks in earths mantle contain a higher percentage of what than rocks in earths crust?
iron and magnesium
What materials are the earths crust made of?
it is made of rocks
What is the difference between relative ages of and relative position of rocks?
Age is how old the rock is relative to other rocks, position is where the rock is in relation to other rocks. Tectonic motion and other forces can easily turn a portion of the Earths crust upside down resulting in older rock lying above younger layers.
What are two rocks that can be found in the earths crust?
Basalt and limestone.
What exists on earths crust?
crief boy quez
What makes close to 95 percent of the rocks of earths crust?
Silicates make up close to 95 percent of the rocks in the Earth's crust
Basic material of the Earth's crust?
The basic materials of the earths crust are; silicate rocks, primary granite, igneous, metamorphic, and sedimentary rocks.
Relative age of the rocks of earths crust can be dertermined by using which law?
The rule is that lower levels were laid down before upper levels. One has to be a little cautious where rocks are very distorted as the layers can become inverted.
