mesotermaalinen

Mesotermaalinen refers to a geological temperature classification used to describe subsurface rock formations. Specifically, mesothermal conditions are characterized by moderate temperatures, typically ranging from 200 to 350 degrees Celsius. These temperatures are often encountered at intermediate depths within the Earth's crust.

The term mesothermal is often used in the context of ore deposit formation. Many hydrothermal ore deposits, such as those containing gold, silver, and copper, are formed under mesothermal conditions. In these environments, hot, mineral-rich fluids circulate through fractured rock, precipitating valuable metals as the fluids cool and their chemical composition changes.

Understanding mesothermal conditions is crucial for geologists and mining engineers in exploring for and extracting mineral resources. It helps in predicting the likely types of ore deposits that might be present in a given region and in designing appropriate extraction methods. The pressure conditions associated with mesothermal environments are generally moderate to high, corresponding to the burial depths where these temperatures are found. The specific mineral assemblages observed in rocks and ores can also provide clues about the prevailing mesothermal conditions under which they formed.