A worker using a gin could do the work of 50 people cleaning cotton by hand. Because of the gin, planters could now grow cotton at a huge profit. Eli Whitney actually made the Cotton gin April 1793.
Stapafell is a volcanic mountain on the south side of SnÃ¦fellsjÃ¶kull. This palagonitic pyramide is 526 m in height og rather eroded at the sides. On the top of the mountain is Fellskross, which was a sign of holy powers at the times of the vikings. It is said that the mountain is home of hidden people, also called elves.
Non-foliated metamorphic rocks such as hornfels, marble, quartzite, and novaculite do not have a layered or banded appearance. Pictures and brief descriptions of some common types of metamorphic rocks are shown on this page. Hornfels is a fine-grained nonfoliated metamorphic rock with no specific composition.uartzite is a non-foliated metamorphic rock that is produced by the metamorphism of sandstone. It is composed primarily of quartz. The specimen above is about two inches (five centimeters) across.