If you are talking about sedimentary rock, and the idea of relative dating, then the younger rock would be on top closer the the surface.
The youngest rocks would be igneous, those created by cooling magma. Impossible to find a fossil there.
Some of the types of rocks and rock formation that someone would find in India would be sedimentary rocks, metamorphic rocks, igneous rocks, peak, and stack rocks.
If the rocks containing the fossils have been involved in a mountain building episode they would be folded and if some of the folds were laid in a recumbent position and later eroded you would have older above younger rocks. Of course, it would be easy to find out if this was the case because of the various sedimentary structures in each separate layer of rock.
You would find extrusive igneous rocks. Beyond that it depends on the volcano.
You would expect to find plagioclase feldspar in a greater variety of igneous rocks compared to biotite. Plagioclase feldspar is a more common mineral and is found in both mafic and felsic rocks, while biotite is typically found in intermediate to felsic rocks.
Yes, you can find fossils in sedimentary rocks.
The oldest rocks are typically found in continental crust regions, particularly in shield areas, which are exposed portions of the ancient crystalline basement rocks. These regions, such as the Canadian Shield or parts of Greenland, contain rocks that have remained relatively undisturbed by tectonic processes. The age of these rocks can often reach over 4 billion years, reflecting the planet's early geological history. Additionally, igneous and metamorphic rocks in these areas are less likely to have been recycled or altered compared to younger sedimentary rocks.
You would find extrusive igneous rocks. Beyond that it depends on the volcano.
Igneous rocks are rocks formed by magma. so the best place to find igneous rocks would be by volcanoes or where a volcano once erupted.
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You can find rocks that are sedimentary rocks which are found in mountains, rivers and near the seashores.
Near a volcano, you would typically find igneous rocks such as basalt, andesite, and rhyolite. This is because volcanoes are formed by the solidification of magma from the Earth's mantle, which cools and solidifies to form igneous rocks. These rocks are often rich in minerals like silica and magnesium.