Iron-manganese nodules (FMNs) are significant components of soil that play a crucial role in various environmental processes. These nodules are formed through pedogenesis, which is the process of ...

"An abundance of water during this time caused the limestone to dissolve, forming the distinctive pillars of the Pinnacles ...

In our study, we found a way to measure the age of pebble-sized iron nodules that formed at the same time as a karst landscape. This method has the technical name of (U/Th)-He geochronology.