Sedimentology and sequence stratigraphy of a tide- and wave-dominated coastal succession: the Cretaceous Goshoura Group, Kyushu, southwest Japan
Sedimentology and sequence stratigraphy of a tide- and wave-dominated coastal succession: the Cretaceous Goshoura Group, Kyushu, southwest Japan
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潮汐和波浪主导的海岸序列的沉积学和层序地层学：日本西南部九州的白垩纪 Goshoura 群
DOI：
10.1006/cres.1999.0143
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发表时间：
1999
影响因子：
2.1
通讯作者：
T. Komatsu
中科院分区：
文献类型：
--
作者：
T. Komatsu
摘要日本九州阿马库萨群岛出露白垩纪上阿尔比亚-塞诺曼期Goshoura群。在相分析的基础上，识别出以下滨海相：滨面-内陆架(上、中滨面、下滨面和内陆架)、滨面潮坪、河口(湾头三角洲、中央盆地、潮滩和河口砂体)和河流(河道、洪泛平原和堤坝)。该组记录了4个海侵和3个海退，由4个沉积层序组成，主要由海侵和高位体系域组成。滨海古环境以潮汐和波浪控制相为特征。根据这一组估计的相对海平面变化与阿尔比亚-塞诺马尼亚边界附近假设的海平面波动是一致的。
Abstract The Cretaceous, upper Albian-Cenomanian, Goshoura Group crops out in the Amakusa Islands, Kyushu, Japan. On the basis of facies analysis, the following coastal facies are recognized: shoreface-inner shelf (upper-middle shoreface, lower shoreface and inner shelf), tidal flat on the shoreface, estuary (bay-head delta, central basin, tidal flat and estuary mouth sand body) and fluvial (fluvial channel, flood plain and levee). The group records 4 transgressions and 3 regressions and consists of 4 depositional sequences composed mainly of transgressive and highstand systems tracts. The coastal palaeoenvironments are characterized by tide-and wave-dominated facies. Relative sea-level change estimated from this group is compatible with postulated eustatic sea-level fluctuation around the Albian-Cenomanian boundary.