cos
Granite will weather more slowly, since it is an igneous rock and is extremely resistant to weathering.
They are more durable because of their interlocking mineral structure and their relatively high silica content, which makes them resistant to weathering.
Igneous rock can change into sedimentary rock or into metamorphic rock. Sedimentary rock can change into metamorphic rock or into igneous rock. Metamorphic rock can change into igneous or sedimentary rock.
Weathering can break away less resistant parts of the rock and leave behind the more resistant parts.
cos
Granite will weather more slowly, since it is an igneous rock and is extremely resistant to weathering.
Rock is far more resistant to weathering (erosion) than sand.
Quartz is a mineral that is highly resistant to chemical weathering. Marble is a mineral that is more susceptible to chemical weathering.
They are more durable because of their interlocking mineral structure and their relatively high silica content, which makes them resistant to weathering.
Igneous rock can change into sedimentary rock or into metamorphic rock. Sedimentary rock can change into metamorphic rock or into igneous rock. Metamorphic rock can change into igneous or sedimentary rock.
Weathering can break away less resistant parts of the rock and leave behind the more resistant parts.
Copper is sufficiently resistant but alloyed become more resistant and strong.
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Differential weathering
actually, it truly depends on the type of rock the metamorphic rock formed from. in other words, if it formed from a rock that held basalt in it, the rock has basalt in it. remember that a metamorphic rock can be formed by more than two different types of rock (such as metamorphic quartz, slate, "fool's gold", plus granite). it does not matter which class the metamorphic rock formed from (but if a m. rock such as m. quartz, there is more likely a chance of finding a trace of basalt), as long as it formed from two different class of rock (this does not always apply, for there can be a metamorphic rock made from two or more metamorphic rocks). i would get into geodes...... but that's another answer. :)
All rocks can become igneous rocks. With weathering and erosion, an igneous rock can become a sediment. Then with compaction and cementation, it can become a sedimentary rock. With heat and pressure, it will turn into a metamorphic rock. Or it can melt and turn into an igneous rock. There are many more ways rocks can change types... that is the rock cycle.