岡山大学 地球科学研究報告
Published by Okayama University Earth Science Reports Editorial Committee

薩南諸島・馬毛島における高緯度サンゴ礁の掘削調査

Nakashima, Yosuke
Ohashi, Tomoya
Hamanaka, Nozomu
Okamoto, Takehiro
Nakai, Tatsuo
Hori, Nobuyuki
Abstract
Four drilling cores are observed from a high-latitude coral reef at the northwestern Mage Island (N30゜45' 40"). The thickness of the Holocene reef is around 2.5m in the reef edge and 4m in back reef. The Holocene thickness is relatively thin comparing to the modern reefs in the middle or the southern Ryukyu Islands. The reef structure Acropora facies, reworked coral rubble facies. This zonal structure conforms to the ecological coral-zonation corresponding to the wave-energy gradient.
Keywords
Holocene
Coral Reef
Sedimentary Structure
Drilling
Southwestem Japan
ISSN
1340-7414
NCID
AN10506284
NAID