Late Pleistocene biogenic opal data for Leg 177 Sites 1093 and 1094
Late Pleistocene biogenic opal data for Leg 177 Sites 1093 and 1094
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第 177 段站点 1093 和 1094 的晚更新世生物蛋白石数据
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发表时间：
2003
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通讯作者：
T. Janecek
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作者：
T. Janecek
为了研究南极地区从短(千年)到长(新生代)的古海洋学历史，在大洋钻探计划第177航次期间对南大洋东南大西洋部分的沉积物进行了取芯。177航段的总体目标有两个：(1)记录古近纪和新近纪早期的生物地层、生物地理和古海洋学历史，这一时期以南极冰冻圈和绕极洋流的建立为标志；(2)以新近纪晚期沉积物的扩大剖面为目标，可用于在轨道和亚轨道时间尺度上确定南半球气候事件的时间(Gersonde，Hodell，Blum，1999)。通过使用ODP型全轮多传感器轨道，对第177段期间回收的所有岩心进行了近距离的沉积物性测量。此外，在俄勒冈州立大学分裂核心分析轨道上收集了高分辨率漫反射彩色反射率和电阻率测量。这些全芯和裂芯测量为生物成因和陆源矿物学和质量通量的估计提供了高分辨率的替代数据集。为了帮助研究人员校准这些位于环南极蛋白石带内的替代数据集，对1093(50°S)和1094(53°S)站点的样品进行了生物蛋白石含量分析。1Janecek，T.R.，2001。数据报告：晚更新世1093和1094站177个点的生物成因蛋白石数据。在Gersonde，R.，Hodell，D.A.和Blum，P.(编辑)，Proc.ODPSci.结果，177，1-5[在线]。可从万维网：<；http://www-odp.tamu.edu/出版物/177_SR/卷/章节/SR177_02.pdf>；获得。[引用YYYY-MM-DD]2南极研究设施，佛罗里达州立大学，佛罗里达州塔拉哈西卡拉韦大楼108号，邮编：32306-4100。邮箱：janecek@gl.fsu.edu
Sediments in the southeast Atlantic sector of the Southern Ocean were cored during Ocean Drilling Program (ODP) Leg 177 to study the paleoceanographic history of the Antarctic region on short (millennial) to long (Cenozoic) timescales. Seven sites were drilled along a northsouth transect across the Antarctic Circumpolar Current (ACC) from 41° to 53°S. The general goals of Leg 177 were twofold: (1) to document the biostratigraphic, biogeographic, and paleoceanographic history of the Paleogene and early Neogene, a period marked by the establishment of the Antarctic cryosphere and the ACC, and (2) to target expanded sections of late Neogene sediments, which can be used to resolve the timing of Southern Hemisphere climatic events on orbital and suborbital time scales (Gersonde, Hodell, Blum, et al., 1999). Closely spaced measurements of sedimentary physical properties were obtained from all cores recovered during Leg 177 using the ODP whole-round multisensor track. In addition, high-resolution diffuse color reflectance and resistivity measurements were collected on the Oregon State University Split Core Analysis Track. These whole-core and split-core measurements provide high-resolution proxy data sets for the estimation of biogenic and terrigenous mineralogy and mass flux. To assist investigators in calibrating these proxy data sets from sites located within the circum-Antarctic opal belt, samples from Sites 1093 (50°S) and 1094 (53°S) were analyzed for biogenic opal content. 1Janecek, T.R., 2001. Data report: Late Pleistocene biogenic opal data for Leg 177 Sites 1093 and 1094. In Gersonde, R., Hodell, D.A., and Blum, P. (Eds.), Proc. ODP, Sci. Results, 177, 1–5 [Online]. Available from World Wide Web: <http://www-odp.tamu.edu/ publications/177_SR/VOLUME/ CHAPTERS/SR177_02.PDF>. [Cited YYYY-MM-DD] 2Antarctic Research Facility, Florida State University, 108 Carraway Building, Tallahassee FL 32306-4100, USA. janecek@gly.fsu.edu