Sediments from the bottom of lakes are often layered. The individual layers, called warves, preserve information from the past and can be "read" like tree rings. By identifying pollen or ashes ...

The scientists were studying lake sediment to test if the presence ... of microplastics distribution in the studied sediment profiles is ambiguous and does not strictly indicate the beginning ...

One study examined the sediments of Lake Xingkai, revealing that the ratios ... at different depths within a soil or sediment profile. This Nature Research Intelligence Topic summary is one ...