Limestone forms in such a way that there are often blocks, as there are cracks perpendicular to the strata. These cracks allow water to actually flow. When the water flows, it dissolves calcite from the limestone, making the crack more pronounced. Water can flow vertically and horizontally in this way. This, after many years, erodes large caverns in the rock.
Naturally acidic water is the main carver of caves. Limestone reacts quickly with acid, granite does not.
limestone is a common bedrock that dissolves more easily than some other types of rock
Because limestones are mostly found deeper than the rock layers sandstone and gravel are located.
Limestone dissolves more easily than other rocks. so caves are often found in regions where the bedrock is composed of limestone.
Limestone is highly vulnerable to naturally acidic rainwater which gradually penetrates its joints and cracks. The accumulated dissolution and erosion can result in cave structures.
Limestone
Limestone or dolostone, most likely, because of its chemical reactivity and dissolution by naturally acidic rainwater and groundwater.
Most basalt is found in the oceanic plates. Most granite is found in the continental plates.
Granite is more hard wearing so when you walk into your house every day it is not going to ware away easily. It is also more weather proof and harder.
Basalt.
shale and sandstone
Soil forms more quickly from limestone than from granite. This is due to the composition of limestone that speeds up soil formation.
Limestone
80F +
karst topography will contain mostly easily erodable bedrock, such as limestone and dolomite.
sedimentary bedrock
Marble as it is a carbonate rock which is soluble in acids.
Limestone or dolostone, most likely, because of its chemical reactivity and dissolution by naturally acidic rainwater and groundwater.
All kinds, but by far the most common is granite. Granite is North Carolina's bedrock. If you were to dig down about six to eight feet you would find granite.
If you find a piece of granite in an area where the local bedrock is sandstone, limestone or some other rock you could deduce that the granite was not local to the area but was probably either a glacial eratic or had been moved there by people. the same would apply to any rock which wasn't local to the area in which it was found.
sedimentary bedrock
Most basalt is found in the oceanic plates. Most granite is found in the continental plates.