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Transcript of Rock Cycle
The Magma cools
and hardens into an
Over time, heat and pressure
build up around the rock and
causes it to melt into
lays deep underground.
The continued heat
and pressure cause the
to change into a
around the rock.
sits deep in the Earth.
erodes away from different types of
Igneous rocks include:
3 volcano types
Different metamorphic rock types:
of stone collect
at the bottom of the lake
Over time, pressure
fuses the sediments together
Common sedimentary rocks:
rock is buried
deep under the ground.
build up around
Continued heat and pressure
causes the rock to change into
rock erodes and washes away
near oceans and lakes.
lay at the bottom of the
lake or ocean.
Over time, pressure causes
the sediments to fuse into
The magma cools and forms
Heat and pressure causes
the rock to melt into
deep under the ground.
Texture: Minerals that make up basalt are not visible to the human eye. Basalt has a lumpy texture.
Grain size: Fine and smooth
Color: Dark gray/black
Found: Northland, Auckland, Banks Peninsula, Timaru, Dunedin, Chatam Islands and Auckland Island.
Texture: Smooth feel
Grain size: Different size crystals
Color: Blueish grey or grey and white spots
Found: West Auckland, Coromandel Peninsula, Great and Little Barrier Islands, Western Bay of Plenty, Central North Island
Grain size: Different crystal sizes
Color: Usually light colored
Found: Northland, Great Brrier Island, Coromandel, Bay of Plenty, Rotorua and Taupo.
Texture: Meduim to course
Grain size: 1mm+
Color: Dark grey, brown or black
Found: Northland, Nelson, Marlbrough and Southland.
Texture: Shiny, smooth and glass like
Grain size: Small
Color: Commonly black but can be found in green red and blue.
Found: Mayor Island and volcanic areas
Texture: Roughish and light
Grain size: Small
Color: Brown, Light brown, grey and sometimes other colors
Found: The North Island mainly
Texture: Medium to course
Grain size: Large
Color: Whites, blacks, browns and other colors
Found: Nelson, Westland, Fiordland and Stewart Island.
Grain size: Medium to fine
Color: Usually grey's or brown's but sometimes red or greens.
Found: Southern Alps, Central Otago and other South Island rocky areas.
Grain size: Fine
Color: Can come in blue, green, red and brown but is commonly black and grey.
Found: North-west of the South Island
Texture: Very grainy
Grain size: Medium to large
Color: Marble is white when it's pure but it comes in a wide range of colors.
Found: Northland, Marble Bay, north-west Nelson, Canterbury, Fiordland and Stewart Island.
Grain size: Medium to course grained.
Color: Black, grey, white and sometimes red
Found: Westland and the Fiordlands
Grain size: Fine to medium grain
Color: Black, brown grey and white
Found: Mainly found the South Island around the Southern Alp and Central Otago area.
Grain size: Fine (between slate and schist)
Color: Black grey and green
Found: Otago and Nelson area
Texture: Cours (lumpy)
Grain size: Medium/large
Color: Variable, but usually brown, grey or black with rocks mixed in
Found: Hawks Bay, Cape Kidnappers, Wairarapa, Canterbury Plains; generally found interbedded with sandstone and mudstone.
Texture: Varies with each rock
Grain size: Varies depending on shell/rock size clasts.
Color: Light colored (grey through yellow)
Found: Te Kuiti , Pancake Rocks at Punakaiki on the west coast of the South Island, Trilobite Rock and north-west Nelson.
Grain size: small
Found: Waikato, West Coast, Otago and Southland.
Gran size: Fine
Color: Grey, yellow, white red
Found: Auckland, Taranaki, King Country, Wairarapa, Southland
Grain size: Medium
Found: Manukau Heads
Texture: Very smooth
Grain size: Very fine
Color: Black, white, grey, brown, red, green, blue
Found: Auckland, Taranaki, Wanganui, Wairarapa, Southland