Medical Definition of amnesia. 1: loss of memory sometimes including the memory of personal identity due to brain injury, shock, fatigue, repression, or illness or sometimes induced by anesthesia a period of amnesia after the wreck.
Shale is a fine-grained sedimentary rock that forms from the compaction of silt and clay-size mineral particles that we commonly call mud. This composition places shale in a category of sedimentary rocks known as mudstones.
An igneous rock is a rock that is made from heat, and the different types of igneous rocks are Obsidian, Granite, Basalt, Pumice and Gabbro.n igneous rock is a rock that is made from heat, and the different types of igneous rocks are Obsidian, Granite, Basalt, Pumice and Gabbro.