Sedimentary rocks are made up of pieces of older rocks (igneous, metamorphic, and sedimentary) and organic remains (shells, bone, etc.). When rocks break apart from erosion they are transported by ...

The Ordovician rocks between Slane (County Meath) and Collon (County Louth) are described. The succession is divided into three groups of which the oldest, the Slane Group (consisting of the ...

This video is audio described. Watch it with captions, but without audio descriptions, here: https://youtu.be/w-tXJkMI_Mw Smithsonian geologist Ben Andrews introduces ...

The relationship between massive sulphide mineralization and the geochemistry and mineralogy of the volcanic host rocks is considered for the Avoca deposit in the light of current models for the ...