"hydrothermal circulation" refers to the movement of hot water beneath the Earth's surface. This circulating water interacts with rocks and minerals, becoming heated and enriched with dissolved substances. It can create hot springs, geysers, or even underwater volcanic vents.
Full definition
In geology a vein is defined as a sheet of crystallized minerals usually created by hydrological processes associated
with hydrothermal circulation.
Knowing that strontium derived from land shows a slightly higher ratio of strontium 87 than strontium derived
from hydrothermal circulation, the scientists compared isotopes in each type of barite.
«And what we were able to find strongly implies that
hydrothermal circulation was very efficient throughout the crustal section.»
Greenfield EGS Projects Greenfield EGS developments take place in areas underlain by hot rock, but with
no hydrothermal circulation to bring the heat close to the surface.