Asia
Afrika
Eropah
lain
Amerika Utara
Amerika Selatan
Australia
pulau hawaii, mid-Atlantik ridge
Bangladesh, China, India, Russia
Ethiopia, Kenya, Morocco, South Africa, Tanzania
Austria, France, Germany, Greece, Italy, Romania, Scotland, Spain, Switzerland
Bolivia, Chili, Kolumbia, Ekuador, peru, venezuela
New South Wales, New Zealand, Queensland, Victoria, Western Australia