I am a chemical sedimentologist: I study how and why chemical sediments form and lithify, with the goal of better understanding how chemical sedimentary rocks (e.g., carbonates, chert, iron formations ...

The study shows that the petrographic, geochemical and spectroscopic features in the graphite (the crystalline form of carbon) found in the Saglek-Hebron chemical sedimentary rocks are in fact ...

In a recent study in the journal Sedimentologika, for example, researchers documented a new kind of sedimentary rock made from coastal slag deposits in the U.K. This rock follows other formations ...

This used to be sand and other sediment - that's why it is called sandstone - which is a type of sedimentary rock. Sedimentary rocks are formed when pieces of rock are eroded, or worn away ...

This academic year, Scripps Institution of Oceanography at UC San Diego welcomes nine new faculty members and researchers to ...

After a decade in the works, researchers at University of California, Los Angeles, have successfully devised a way to produce ...

Quartz is made of the chemical elements silicon and oxygen ... There are three main types of rock — igneous, sedimentary and metamorphic — with varying mineral mixes depending on where and ...

Relative dating to determine the age of rocks and fossils Geologists have established a set of principles that can be applied to sedimentary and volcanic rocks that are exposed at the Earth's ...

Minerals are naturally occurring, solid, and inorganic substances that have a definite chemical composition (or range of compositions) and a regular internal atomic arrangement. Southwestern Ohio's ...

Rock salt is a chemical sedimentary rock that forms through the evaporation of water, as minerals dissolve and settle down. When excavated directly from the earth, it maintains a cube-shaped ...

Chemical composition of ancient rocks Iron sulfide can only exist in rocks that were formed before there was oxygen in the atmosphere. Rocks containing iron oxide can only form if oxygen is present.