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Một mô hình giải thích sự khác biệt giữa các loại đảo-atoll trên mảng kiến tạo Thái Bình Dương
Tóm tắt
Mười một loại đảo-atoll điển hình của mảng kiến tạo Thái Bình Dương được mô tả. Thông tin về kiến tạo và núi lửa có thể giúp giải thích cấu trúc hiện tại của các đảo-atoll sau đó được trình bày chi tiết. Thông tin này liên quan đến sự chuyển động của mảng kiến tạo Thái Bình Dương vào sâu hơn trong đại dương khi mảng kiến tạo già đi, tác động của việc làm nóng lại các khu vực giữa mảng, tác động nén trước khi mảng bị chìm xuống và nguồn gốc cũng như tình trạng isostasy cục bộ của các nền đảo núi lửa nguyên thủy. Các ví dụ về chuỗi núi ngầm như Hawaiian-Emperor sau đó được xem xét để xác định cách mà các yếu tố kiến tạo đang tác động có liên quan đến các hình thức đảo-atoll quan sát được. Bài báo kết luận với một mô hình tích hợp các khả năng về kiến tạo-núi lửa nhằm giải thích tất cả các loại đảo-atoll trên mảng kiến tạo Thái Bình Dương.
Từ khóa
#đảo-atoll #mảng kiến tạo Thái Bình Dương #núi lửa #cấu trúc địa chất #isostasy #chuỗi núi ngầmTài liệu tham khảo
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