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What are some important metals that come from Precambrian age rocks?
Wiki User
∙ 12y ago
The first era is the Precambrian Era. During this time, which makes up 85% of the earth's existence, life was not common, partly because there was a lack of an environment that creatures could survive in. Early life consisted of single celled organisms and, possibly, viruses. These early cells likely got their energy from chemicals produced in the earth - not from the sun's energy. Unlike todays life, which mostly uses oxygen to survive, early organisms found oxygen to be a poison.
Possibly as early as 2.5 billion years ago, an organism arose which used the sun's energy in a process called photosynthesis. This organism, called cyanobacteria (also called blue-green algae) excreted oxygen in the process and this changed the living planet as oxygen levels rose and killed off many other ancient organisms.
Evidence of this early life comes in the form of stromatolites, which are rocky mounds which the cyanobacteria created on the ocean floor. Stromatolites are still being created by cyanobacteria, in the oceans and in hypersaline lakes. There is evidence of other organisms grazing on stromatolites as early as 1 billion years ago, which means that these more complex organisms had already evolved.
Wiki User
∙ 12y ago
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Do metals only come fron ores?
Yes, metals do only come from ores and pure metals also are found in the Earth's crust.
What was the most important step in the development of the periodic table?
The most important step taken by Mendeleev in developing the periodic table of elements was the realization that chemical properties come in a repeating pattern, as elements get heavier. They go from metals to nonmetals to noble gases, and then back to metals.
What type f rocks come from living things?
the type of rocks that don't come from living things is .
What rocks come from other rocks?
metamorphic rocks of course, a few examples are hornfels or a soap stone.
Do all the rocks come from the same place?
No. Rocks have a wide variety of origins.
Where does much of your history of Precambrian rocks come from?
Ores mined from shields...
Where do most of our history of precambrian rocks come from?
Most of our knowledge of Precambrian rocks comes from studying exposed rock outcrops on the Earth's surface, as well as from drilling deep boreholes and mining operations. Additionally, information about Precambrian rocks can be gleaned from geophysical surveys and satellite imagery.
The earth is made mostly of metals and rocks Where did this material come from?
your mama and your daddy
A mineral with a valuable metal in it is an?
All metals come in a Raw form and are extracted from rocks that are called Ores
Why is it important to know the different properties of rocks?
it is important to learn about rocks because they make up the lithosphere and you might never know that when they will come into use
Earth is made mostly of metals and rocks. Where did this material come from?
your mama and your daddy
What makes transition metals useful in industry?
They come into useful things from metals come i to use
What type of solid rock forms on a volcano from the lava during an eruption?
Igneous rocks are formed after solidification of lava (Magma inside earth). They are rich in metals as metals are found deep in earth and hence they come out in molten state with the lava.
Do metals only come fron ores?
Yes, metals do only come from ores and pure metals also are found in the Earth's crust.
When rocks come into molten rocks?
igneous
What ions are in an ionic bond and who do they come from?
Cations and anions are in ionic bond. They come from metals and non-metals.
Where did the small grains of rocks come from?
Older rocks.
