15. DATA REPORT: LATE PLEISTOCENE OXYGEN AND CARBON ISOTOPE STRATIGRAPHY IN BULK- AND FINE-FRACTION CARBONATE FROM THE GREAT AUSTRALIAN BIGHT, ODP LEG 182, SITE 1127
15. DATA REPORT: LATE PLEISTOCENE OXYGEN AND CARBON ISOTOPE STRATIGRAPHY IN BULK- AND FINE-FRACTION CARBONATE FROM THE GREAT AUSTRALIAN BIGHT, ODP LEG 182, SITE 1127
复制标题
15. 数据报告：大澳大利亚湾 ODP 段 182、站点 1127 的散装和细碎碳酸盐中更新世晚期氧和碳同位素地层
DOI：
--
复制
发表时间：
2002
期刊：
影响因子：
--
通讯作者：
J. Mckenzie
中科院分区：
文献类型：
--
作者：
Carbon Isotope;M. Andres;J. Mckenzie
本研究的目的是评估从大澳大利亚湾钻探的 1127B 孔中构建晚更新世系列氧和碳同位素地层的潜力。对散装和细粒（<38 μm）沉积物样品进行稳定同位素分析。氧同位素变化的幅度通常比全球远洋记录预期的要小。这很可能是由于沉积物成分以浅海为主。氧同位素数据与碳酸盐矿物学和井下测井数据的关联显示出同时的变化和趋势，这在中更新世沉积物中尤其明显。氧同位素数据与经典 SPECMAP 曲线的关联用于评估 1127 号站点沉积物的地层潜力。这项研究表明，需要基于浮游和底栖有孔虫的同位素地层学来全面评估边缘环境中沉积的冷水碳酸盐对全球冰量波动以及相关海平面变化的响应。
The aim of this study was to evaluate the potential of constructing an oxygen and carbon isotope stratigraphy for the late Pleistocene succession from Hole 1127B drilled on the Great Australian Bight. Stable isotope analyses were performed on bulkand fine-fraction (<38 μm) sediment samples. The oxygen isotope variations are generally smaller in magnitude than expected from global pelagic records. This is most likely due to the neriticly dominated sediment composition. Correlation of the oxygen isotope data with carbonate mineralogy and downhole logging data shows simultaneous variations and trends, which are particularly evident in the mid-Pleistocene sediments. Correlation of the oxygen isotope data with the classic SPECMAP curve is used to evaluate the stratigraphic potential of the Site 1127 sediments. This study indicates that an isotope stratigraphy based on planktonic and benthic foraminifers is needed to fully evaluate the response of cool-water carbonates deposited in a margin setting to global ice–volume fluctuations and, hence, the associated sea level variations.