What are three phenomena that could be regarded as geological hazards?

Question

What are three phenomena that could be regarded as geological hazards?

Answer 1

earthquakes, volcanoes, and rising sea level

Answer 2

Just lifted this off wiki - a few to choose from!

A geologic hazard is one of several types of adverse geologic conditions capable of causing damage or loss of property and life. These hazards can consist of sudden or slow phenomena:

    * avalanches (snow, rock, or air & snow) and its runout

    * earthquakes and earthquake-triggered phenomena

    * fault rupture (displacement of the terrain or ground along a geological fault), recent (active) fault (exhibiting actual movement or seismic activity)

    * forest fires (espec. in mediterranean areas)

    * ice jams or ice impact (Eisstoß) on rivers or below a glacier

    * landslide (lateral displacement of earth materials on a slope or hillside)

    * mudflows (avalanche-like muddy flow of soft/wet soil and sediment materials, narrow landslides)

    * pyroclastic flows

    * rock falls, rock slides, (rock avalanche) and debris flows

    * torrents (flash floods, rapid floods or heavy current creeks with irregular course)

    * volcanic eruptions, lahars and ash falls.

Rather gradual or slow phenomena are e.g.:

    * alluvial cones (e.g. at the exit of canyons or side valleys)

    * caldera development (volcanoes)

Norris geyser at Yellowstone NP, Sept.2003

Norris geyser at Yellowstone NP, Sept.2003

    * geyser deposits

    * ground settlement due to consolidation of compressible soils or due to collapseable soils (see also compaction)

    * ground subsidence, sags and sinkholes

    * liquefaction (settlement of the ground in areas underlain by loose saturated sand/silt during an earthquake event)

    * sand dune migration

    * shoreline and wave erosion

    * thermal springs

Sometime the hazard is instigated by man through the careless location of developments or construction in which the conditions were not taken into account.

Answer 3

There are many kinds of geological hazards - basically any catastrophe related to the solid matter on earth that can cause damage to life and property

Some examples are Volcanoes, Earthquakes, Landslides, Avalanches, Mud flows etc.