• earth atmosphere evolution

    TITLE: geologic history of Earth: Formation of the secondary atmosphere
  • Pleistocene Epoch deposits

    TITLE: Pleistocene Epoch: Loess-paleosol records
    SECTION: Loess-paleosol records
    ...accumulated primarily during times that were colder and drier than present, and most of it was derived from desert areas to the west. The loess succession contains many colourful buried soils or paleosols that formed during periods which were both warmer and wetter than today. Thus, on stable tablelands with minimal erosion, the succession provides an exceptional climatic and chronological...
  • topography

    TITLE: soil: Climate
    SECTION: Climate