cangkang foraminifera

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Cangkang Foraminifera

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  • CANGKANG FORAMINIFERA(FORAMINIFERA TEST)Forams test are generally composed of secreted calcium carbonate (CaCO3), but less commonly they may be composed of organic material or cemented particles scavanged from the sea floor.

    Forams produce tests in range of shapes & sized(http://oceanworld.tamu.edu/students/forams/forams_what_is.htm)

  • MORFOLOGI CANGKANGFORAMINIFERAMONOTHALAMUS:1. Bulat2. Botol3. Tabung4. Botol & Tabung5. Planispiral6. Planispiral-tidak teratur7. Palnispiral-lurus

    POLYTHALAMUS:1. Uniformed2. Biformed3. Triformed4. Multiformed

  • BAGIAN-BAGIAN DARI CANGKANG FORAMFORAMINIFERA BENTONIK KECILFORAMINIFERA PLANGTONIK

    2 1 2 1 1 1 1 3 1 2 4 3 5

    Dorsal Ventral Ventral Peripheral Dorsal

    KamarSutura 1 1 1 AperturUmbilical area 2Proloculus

    Ventral Dorsal Peripheral

  • SUSUNAN KAMAR DARI CANGKANG FORAMINIFERA

    Linier & mempunyai leher

    TIDAK TERPUTAR

    Curvilinier

    Equitant

    UNISERIAL

    Planispiral coiled

    UNIFORMED

    TERPUTAR

    Nautiloid

    Involute

    Evolute

    Rotaloid

    Helicoid

    BISERIAL

    TRISERIAL

    POLYTHALAMUS TEST

    BIFORMED

    TRIFORMED

    MULTIFORMED

  • BENTUK-BENTUK DASARCANGKANG FORAM

  • APERTURJENIS APERTUR:Primer, Sekunder dan Supplementary

    POSISI APERTUR:

  • APERTURBENTUK APERTUR

  • ORNAMENTASI

  • KOMPOSISI DINDING CANGKANGKhitin/TektinAglutinin/ArenaceousSilikaan (Siliceous)Gampingan (Calcareous)- Porselen- Hyalin- Gampingan granular- Gampingan yang kompleks

  • CONTOH BERBAGAI JENIS KOMPOSISI DINDING CANGKANG FORAMINIFERA

  • KOMPOSISI DINDING CANGKANG