Where Is Marble Found In The Earth S Crust

Marble is a metamorphic rock which means rock that has changed.
Where is marble found in the earth s crust. The change from limestones rich in fossils into true marbles in such metamorphic regions is a common phenomenon. Oceanic crust covers about 60 percent of the earth s surface. The mohorovicic discontinuity moho is the boundary between these two layers. Oceanic crust is born at the mid ocean ridges where plates are pulled apart.
Probably since the first part of the earths birth is the earth s inner core which is a solid iron nickel alloy with a few trace elements. Igneous rocks are formed directly from lava or the earth s molten core. Marble is formed from limestone. Continental and oceanic crust usgs.
Metamorphic rocks are formed from other materials already existing on the earth s surface. Marbles often occur interbedded with such metamorphic rocks as mica schists phyllites gneisses and granulites and are most common in the older layers of earth s crust that have been deeply buried in regions of extreme folding and igneous intrusion. Occasionally as at carrara. How is marble formed.
The mohorovicic discontinuity the mohorovicic discontinuity or moho boundary was named for the croatian seismologist who discovered it. The speed of earthquake waves led to the discovery of the boundary between the earths crust and the mantle. Marble was formed under the outerlayer of the earth s crust. Oceanic crust is thin and young no more than about 20 km thick and no older than about 180 million years.