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| Metamorphic Rocks - Lesson 8 - Part 6 of 6 |
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Metamorphic Rocks 8-Part6
•Classification of metamorphic rocks
•Dynamic (Regional) (Shale, Slate,
Phyllite, Schist, Gneiss, Granite)
•Geothermal (Regional) rocks; Sandstone,
Quartzite, Limestone, Marble, Garnets,
Amphibolite
•Contact (Marble, Quartzite)
•Hydrothermal rock types; Perioditite,
Serpentinite, Soapstone
•Hydrothermal (Dynamic) Mylonite
•Location in Canada of metamorphic rocks
•Geological provinces in the Canadian
Shield.
Tags : Geology metamorphic Metamorphic Rocks 8-Part6 •Classification of rocks •Dynamic (Regional) (Shale Slate Phyllite Schist Gneiss Granite) Geothermal rocks; Sandstone Quartzite Limestone Marble Garnets Amphibolite Contact (Marble Quartzite) Hydrothermal rock types; Perioditite Serpentinite Soapstone (Dynamic) Mylonite Location in Canada Geological provinces the Canadian Shield. |
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Affichage : 872
Durée : 568 s |
| Sir David Attenborough: the Global Amphibian Crisis |
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Sir David Attenborough talks about the global
amphibian crisis.
The Zoological Society of London is working
alongside Amphibian Ark (AArk), which was
founded to carry out an Amphibian
Conservation Action Plan (ACAP).
AArk's three principal partners are:
IUCN/SSC Conservation Breeding Specialist
Group (CBSG)
IUCN/SSC Amphibian Specialist Group (ASG)
World Association of Zoos and Aquariums
(WAZA)
AArk will implement the development of short
term captive management of threatened
amphibians - thus ensuring the long-term
survival of species for which adequate
protection in the wild is not currently
available. Captive management buys valuable
time to mitigate threats for species that
would otherwise go extinct.
AArk supports the rescue of amphibian species
to bring them into "protective custody" in
dedicated biosecure facilities at zoos,
aquariums, botanical gardens, research
centres, and other institutions around the
world for safekeeping and breeding. These
rescued amphibians will be released back into
the wild when the original threats have been
controlled.
Tags : Amphibian ark global crisis |
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Affichage : 3883
Durée : 270 s |
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