To produce Portland cement, limestone is mixed with raw materials such as siliceous stone and clay and is heated to about 1,450 °C. During this process, an intermediate product called ‘clinker ...
We specialize in applied work using siliceous microfossils in conjunction with other sedimentologic and geochemical proxies. Microfossil expertise extends to biostratigraphy and biodiversity studies ...
Abyss Pool in the West Thumb Geyser Basin in Yellowstone National Park is getting hotter and changing colors. Scientists say the pool, where a human ...