Most other ICDP projects with a deep biosphere interest target sedimentary rocks. The microbiology working group will investigate microbial life in highly metamorphosed sedimentary and crystalline bedrock, which will introduce challenges different from those dealt with in sediments. The most obvious difference is that we anticipate life will only be present in fractures with water, while they commonly occur evenly distributed in sedimentary rocks. A second important difference is that sedimentary rocks basically offer surface generated energy and nutrient sources to the deep biosphere, while in crystalline rock, microbial life must utilise inorganic, geological sources such as energy-rich gases.
The project is carried out at the Division of GeoEngineering, researchgroup Engineering Geology.
More information can be found at the projects homepage.