中部太平洋における完新世海面変動と現成サンゴ礁の地形発達

DOI Web Site 被引用文献2件 参考文献46件

書誌事項

タイトル別名
  • Geomorphic Development of Modern Coral Reefs and Holocene Sea-level Changes in the Middle Pacific.
  • チュウブ タイヘイヨウ ニ オケル カンシンセイ カイメン ヘンドウ ト ゲン

この論文をさがす

抄録

The geomorphic development of the modern coral reefs in the middle Pacifc has been studied on the basis of multiple shallow boring and the age determination of cored samples. The study area covers Ryukyu Islands, Mariana Islands and South Cook Islands. The geomorphic development of the modern coral reefs can be divided into three stages in terms of Holocene sea-level changes. (1) Most coral reefs of these islands have grown upward, in particular in the reef front before 6, 000 to 5, 000 y BP associated with a rapidly rising sealevel. (2) The reef crest caught up a gently rising sea-level during the period from 6, 000 to 3, 500 y BP and the zonal distribution of the surface features such as reef crest, reef pavement and moat has been accomplished. (3) Emergence of the reef flat occurred around 4, 000 to 3, 000 y BP in many islands and the reef front jumped seaward at the emergence. After 3, 000 y BP, the emerged reef flat has been eroded partly or totally into the erosional reef flat associated with a newly stabilized sea-level and the horizontal extention of the reef flat has occurred both seaward and landward.<BR>The high stand of sea-level in the middle Holocene has been recognized in many islands in the middle Pacific. The age of the highest sea-level in the Holocene in these oceanic islands is around 4, 000 to 3, 500 y BP and this age is significantly younger than that (=6, 000 y BP) along the coast of the continental margin. This implies that a part of regional difference in the emergence during the late Holocene would be caused by the hydro-isostatic effect.

収録刊行物

  • 地学雑誌

    地学雑誌 103 (7), 841-852, 1994

    公益社団法人 東京地学協会

被引用文献 (2)*注記

もっと見る

参考文献 (46)*注記

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ