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  • The Australian Museum is closed to the public until mid-2020 to enable a major renovation. Project Discover is creating a renewed museum to match its world-class collection.

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  • Sedimentary processes
    https://australianmuseum.net.au/learn/minerals/shaping-earth/sedimentary-processes/

    Sediments are formed by the breakdown (both physical and chemical) of pre-existing rocks, which may be of igneous, metamorphic or sedimentary origin.

    Published 11 February 2009
    geological processes geoscience earth sciences Earth and Environmental Science geology
  • Sedimentary structures
    https://australianmuseum.net.au/learn/minerals/shaping-earth/sedimentary-structures/

    Sedimentary structures can be of either physical (e.g. wave action) or biological (e.g. disruption of sediments by animals) origin.

    Published 11 February 2009
    Earth and Environmental Science earth sciences geological processes geoscience
  • Limestone caves
    https://australianmuseum.net.au/learn/minerals/shaping-earth/limestone-caves/

    Caves form in limestone (calcium carbonate), and occasionally in dolomite (calcium magnesium carbonate), when water containing dissolved carbon dioxide (carbonic acid) seeps into rock crevices and joints.

    Published 29 July 2009
    geological processes geoscience earth sciences Earth and Environmental Science geology
  • Soils
    https://australianmuseum.net.au/learn/minerals/shaping-earth/soils/

    Soils are made up of three layers and are thickest where they are older and in warm and wet environments.

    Published 11 February 2009
    geological processes geoscience earth earth sciences Earth and Environmental Science geology
  • Characteristics of sediments
    https://australianmuseum.net.au/learn/minerals/shaping-earth/characteristics-of-sediments/

    Sediments can be classified by their characteristics, which relate to how they have been transported and weathered and how far from their original source they have been deposited.

    Published 27 January 2010
    Earth and Environmental Science earth sciences geological processes geoscience
  • Classification of sedimentary rocks
    https://australianmuseum.net.au/learn/minerals/shaping-earth/classification-of-sedimentary-rocks/

    Sedimentary rocks are classified according to the predominant grain size present, as well as by their mineral content.

    Published 13 November 2018
    geological processes geoscience earth earth sciences Earth and Environmental Science geology
  • Concretions, Thunder Eggs and Geodes
    https://australianmuseum.net.au/learn/minerals/shaping-earth/concretions-thunder-eggs-and-geodes/

    Concretions are compact, often rounded, accumulations of mineral matter that form inside sedimentary rocks such as shale and sandstone or in soil.

    Published 02 June 2009
    geological processes geoscience earth earth sciences Earth and Environmental Science geology
  • Volcanic landforms
    https://australianmuseum.net.au/learn/minerals/shaping-earth/volcanic-landforms/

    Each type of volcanic massif (structure) contains lavas, pyroclastic rocks and intrusions, but these differ in proportions and compositions.

    Published 11 February 2009
    volcano geoscience geological processes earth sciences Earth and Environmental Science
  • Magma
    https://australianmuseum.net.au/learn/minerals/shaping-earth/magma/

    Magma is hot molten mobile rock. Igneous rocks form when magma cools and solidifies. Magmas come out of active volcanoes as lavas.

    Published 11 February 2009
    geological processes geoscience earth earth sciences Earth and Environmental Science geology
  • Volcanic rocks
    https://australianmuseum.net.au/learn/minerals/shaping-earth/volcanic-rocks/

    Volcanic rocks are divided into three main types: basaltic, volcaniclastic and pyroclastic.

    Published 11 February 2009
    volcano geological processes geoscience earth sciences Earth and Environmental Science geology
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