* Marble's origin: Marble forms from the metamorphosis of limestone. Limestone is a sedimentary rock, often formed from the accumulation of marine organisms' shells and skeletons.
* Granite's origin: Granite is an igneous rock, formed from the cooling and crystallization of magma deep within the Earth's crust.
The relationship is more about geological processes than a simple spatial one:
1. Granite as a foundation: Granite often forms the bedrock, a layer of older rock that is exposed at the Earth's surface or is buried beneath other layers.
2. Sedimentation: Over time, layers of sediment, including those that will eventually become limestone, build up on top of the granite.
3. Subduction and heat: In some cases, these sedimentary layers can be pushed down (subducted) into the Earth's mantle. The immense heat and pressure transform the limestone into marble.
4. Erosion and exposure: Erosion can wear away the overlying layers, exposing the marble that was formed beneath.
Therefore, marble and granite are not typically found directly on top of each other. However, they can be found in the same area because they are both formed through different geological processes that can occur over time.