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Coral reefs off the coast of the Mexican peninsula Yucatan near groundwater sources (Ojos). Photo: Elizabeth D. Crook
08.08.2019

Stony corals: Limits of adaption

New study on coral growth in times of climate change

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35 million years ago, an asteroid struck the east coast of North America. Ejected material from the impact site was distributed over an area of at least 7 million square kilometres (Tektite field). In drilling samples taken from the sea floor 400 kilometres from the point of impact (ODP 1073), researchers have now found clear traces of the impact and dated them for the first time using the uranium-thorium-helium technique. Image reproduced from the GEBCO world map 2014, www.gebco.net
26.07.2019

Space exploration on the sea floor

Traces of an extraterrestrial impact event detected in marine sediments

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Schematic diagram of the geochemical processes between the Earth's mantle and the Lithosphere in the Archean. Fig. after E. Asafov.
16.07.2019

Recycling on Earth for more than 3 billion years

Plate tectonics much older than previously thought

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Group photo. Photo: Bradley Weymer, GEOMAR.
15.07.2019

Groundwater at the sea floor

Maltese-German summer school on freshwater resources in the ocean

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Along the North Anatolian Fault, Anatolia and the Eurasian Earth Plate push past each other. Image reproduced from the GEBCO world map 2014, www.gebco.net
08.07.2019

Istanbul: Seafloor study proves earthquake risk for the first time

GeoSEA sensors document tectonic strain build-up below the Sea of Marmara

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Currently, organic material in the ocean is mainly degraded with oxygen (left). Together with a warming of the ocean this leads to deoxygenation. In a future, warmer ocean (right), more organic material is respirated by denitrification with nitrate. The associated oxygen saving would even exceed the oxygen loss due to warming. Graphic: Rita Erven/GEOMAR
27.06.2019

The far–future ocean: warm yet oxygen-rich

Model study identifies an oxygen-saving mechanism from sloppy nitrogen-cycle interactions

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The participants in the GEOMAR lecture hall. Photo: J. Dengg/GEOMAR
21.06.2019

Biology teaching with a difference

GEOMAR organizes research conference for school classes

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