The Austrian Dr. Ferdinand Porsche, at age 23, built his first car, the Lohner Electric Chaise. It was the worldâs first front-wheel-drive. Porscheâs second car was a hybrid, using an internal combustion engine to spin a generator that provided power to electric motors located in the wheel hubs.
burial metamorphism. (geology). A kind of regional metamorphism which affects sediments and interbedded volcanic rocks in a geosyncline without the factors of orogenesis or magmatic intrusions. 1  Facebook. 2  Twitter.
A metamorphic rock used to be some other type of rock, but it was changed inside the Earth to become a new type of rock. The word metamorphism comes from ancient Greek words for change (meta) and form (morph). The type of rock that a metamorphic rock used to be, prior to metamorphism, is called the protolith. During metamorphism the mineral content and texture of the protolith are changed due to changes in the physical and chemical environment of the rock. Metamorphism can be caused by burial, tectonic stress, heating by magma, or alteration by fluids. At advanced stages of metamorphism, it is common for a metamorphic rock to develop such a different set of minerals and such a thoroughly changed texture that it is difficult to recognize what the protolith was.