The most substantial of these are the lithic environments, where well-developed microbial communities have colonized cracks in rocks (these ... coarse crystalline rock types (endoliths).

Erosion is the process that wears away the river bed and banks. Erosion also breaks up the rocks that are carried by the river.

Erosion is the process that wears away the river bed and banks. Erosion also breaks up the rocks that are carried by the river.

Sedimentology explores the origin, transport, deposition and diagenetic alterations of the materials that compose sediments and sedimentary rocks. Stratigraphy investigates how those types of rocks ...

Third, magnetism in rocks can be used to estimate the age of a fossil site. This method uses the orientation of the Earth's magnetic field, which has changed through time, to determine ages for ...

The investigation began with a geological mystery: the presence of rocks that, by their nature, do not match the types of formations currently present in Iceland. We knew these rocks looked out of ...