Metamorphic
1 million years
millions of years
millions of years
They are called limited because they take millions of years to form and most probably no-one has millions of years to live.
The formation of buttes occurs on a geological timescale. This can be from millions to hundreds of millions years.
Fossil fuels take millions of years to form.
Some extrusive rocks such as lava and ejecta form in minutes. Stalactites may form in a few tens of years, but commonly longer. Other rocks may take millions of years, and may have to be recycled through metamorphism to attain their final form.
Amber forms over millions of years as tree resin hardens and fossilizes, a process that can take anywhere from tens of thousands to millions of years.
Fossil fuels take millions of years to form, so once they are depleted, they are essentially gone for human timescales. However, it is technically possible for more fossil fuels to form over millions of years in the future, but for all practical purposes, once depleted, they are gone.
this is stupid dont read this?
Millions of years under constant pressure and heat.
take millions of years to form