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The Last Glacial Maximum (LGM) is partly characterized by a hiatus.Planktic foraminiferal abundance variations of Neogloboquadrina pachyderma sinistral and calcareous nannofossils reflect changes in Arctic Ocean summer sea ice coverage and probably inflow of subpolar North Atlantic water.

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The clock in the corn cob - on the development of a chronology of the Paracas and Nasca period based on radiocarbon. Kleinsäugerfaunen in frühmittel-pleistozänen Flussablagerungen an Neckar, Main und Rhein.

In "Homo heidelbergensis - Schlüsselfund der Menschheits-geschichte." (G.

Upon impact with the Earth's atmosphere, cosmic rays can produce showers of secondary particles that sometimes reach the surface.

Composed primarily of high-energy protons and atomic nuclei, they are of mysterious origin.

Data from the Fermi Space Telescope (2013) high-energy particles with intrinsic mass are known as "cosmic" rays, while photons, which are quanta of electromagnetic radiation (and so have no intrinsic mass) are known by their common names, such as gamma rays or X-rays, depending on their photon energy.

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