The basalt which makes up the Giant’s causeway is an igneous rock. Sedimentary rocks are formed by small rock pieces which are transported by rivers and laid down in layers. Chalk is a ...

These are formed when either igneous or sedimentary rocks are changed. Heat and/or pressure will cause the elements in the original rock to react and re-form. Metamorphic rocks are highly ...

NASA’s Perseverance rover has captured an image of a never-before-seen Martian rock formation that scientists believe could ...

Pauls Bay," the rock is made up of hundreds ... And last year, Perseverance found light-colored sedimentary rocks with an uneven "popcorn-like" texture. In keeping with the appetizing analogues ...