dcsimg
Imagem de Amphistegina lessonii d'Orbigny ex Guérin-Méneville 1832
Life » » Rhizaria » » Foraminifera » » Amphisteginidae »

Amphistegina lessonii d'Orbigny ex Guérin-Méneville 1832

    forms

  • sedimento marinho raso
    mostrar todos os registros
    (morto)
  • lama calcária
    • URI: http://purl.obolibrary.org/obo/ENVO_02000046
    • Definição: Calcareous ooze is a marine sediment composed primarily of the shells--also known as tests--of foraminifera, coccolithophores, and pteropods. This is the most common pelagic sediment by area, covering 48% of the world ocean's floor. This type of ooze is limited to depths above the Carbonate Compensation Depth at time of burial. It accumulates more rapidly than any other pelagic sediment type, with a rate that varies from 0.3 - 5 cm / 1000 yr.
    mostrar todos os registros
    (morto)