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    • Yawiki ›
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    Mercan adası

    Atol
    commons.wikimedia.org sitesinden görsel
    tr.m.wikipedia.org sitesinden görsel
    pinterest.com sitesinden görsel
    youtube.com sitesinden görsel
    livingoceansfoundation.org sitesinden görsel
    wallhere.com sitesinden görsel

    Genel bilgiler

    Mercan adası ya da atol, ortasında lagün adı verilen bir göl bulunan, kısmen veya tamamen lagünü çevreleyen adacıklara denir.

    Atolller her zaman dairesel yapıda olmamakla birlikte düzinelerce kilometre çapında kapalı bir şekil oluşturan ve ortasında yaklaşık 50 m ya da daha derin bir lagün bulunduran mercan resiflerinden oluşur.

    Atoll oluşumunun günümüzdeki açıklaması charles Darwin'in kuramına dayanır. Buna göre atolller, çok önceleri çöküp yok olan bir volkanik adanın çevresinde gelişmekte olan bir resifin son aşamasını temsil eder.

    tr.wikipedia.org

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    tr.wikipedia.org
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