Data report: calcareous nannofossils from upper Pliocene and Pleistocene, Expedition 306 Sites U1313 and U1314 1
Data report: calcareous nannofossils from upper Pliocene and Pleistocene, Expedition 306 Sites U1313 and U1314 1
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数据报告：来自上新世上部和更新世的钙质超微化石，Expedition 306 地点 U1313 和 U1314 1
DOI：
10.2204/iodp.proc.303306.206.2009
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发表时间：
2009
期刊：
影响因子：
4.9
通讯作者：
D. Kulhanek
中科院分区：
文献类型：
--
作者：
K. Hagino;D. Kulhanek
综合大洋钻探计划第306远征队在北大西洋的两个地点恢复了扩大的上新世-更新世剖面。地点U1313是在亚速尔群岛西北的中大西洋海脊的西侧钻探的，而地点U1314是在Gardar Drift南部钻探的。这两个地点的钙质超微化石都很丰富，在上新世和更新世晚期保存得相当好。组合以桥壳类和网孔类为主。对U1313站点上部158米复合深度（mcd）的生物地层学分析产生了一个跨越过去300万年的完整的超微化石数据序列。U1314遗址在更新世期间具有较高的沉积速率，跨越了过去的100万年。在上96 MCD中。
Integrated Ocean Drilling Program Expedition 306 recovered expanded Pliocene–Pleistocene sections at two sites in the North Atlantic. Site U1313 was drilled on the western flank of the Mid-Atlantic Ridge northwest of the Azores, whereas Site U1314 was drilled on the southern Gardar Drift. Calcareous nannofossils from both sites are abundant and moderately to well preserved in the upper Pliocene and Pleistocene. The assemblages are dominated by gephyrocapsids and reticulofenestrids. Biostratigraphic analysis of the upper 158 meters composite depth (mcd) of Site U1313 yields a complete succession of nannofossil datums spanning the last 3 m.y. Site U1314, which had higher sedimentation rates during the Pleistocene, spans the last 1 m.y. in the upper 96 mcd.