Sediment core data from offshore Palos Verdes, California

The seven files included in this U.S. Geological Survey data release are data from a set of sediment cores acquired from the continental slope, offshore Los Angeles and the Palos Verdes Peninsula, adjacent to the Palos Verdes Fault. Gravity cores were collected by the USGS in 2009 (cruise ID S-I2-09-SC; http://cmgds.marine.usgs.gov/fan_info.php?fan=SI209SC), and vibracores were collected with the Monterey Bay Aquarium Research Institute's remotely operated vehicle (ROV) Doc Ricketts in 2010 (cruise ID W-1-10-SC; http://cmgds.marine.usgs.gov/fan_info.php?fan=W110SC). One spreadsheet (PalosVerdesCores_Info.xlsx) contains core name, location, and length. One spreadsheet (PalosVerdesCores_MSCLdata.xlsx) contains Multi-Sensor Core Logger P-wave velocity, gamma-ray density, and magnetic susceptibility whole-core logs. One zipped folder of .bmp files (PalosVerdesCores_Photos.zip) contains continuous core photographs of the archive half of each core. One spreadsheet (PalosVerdesCores_GrainSize.xlsx) contains laser particle grain size sample information and analytical results. One spreadsheet (PalosVerdesCores_Radiocarbon.xlsx) contains radiocarbon sample information, results, and calibrated ages. One zipped folder of DICOM files (PalosVerdesCores_CT.zip) contains raw computed tomography (CT) image files. One .pdf file (PalosVerdesCores_Figures.pdf) contains combined displays of data for each core, including graphic diagram descriptive logs. This particular metadata file describes the information contained in the file PalosVerdesCores_Radiocarbon.xlsx. All cores are archived by the U.S. Geological Survey Pacific Coastal and Marine Science Center.

美国地质调查局（U.S. Geological Survey, USGS）本次发布的数据集中包含7个文件，数据来源于毗邻帕洛斯弗迪斯断层（Palos Verdes Fault）、洛杉矶近海及帕洛斯弗迪斯半岛的大陆坡沉积物岩心系列。重力柱样由USGS于2009年采集（航次编号：S-I2-09-SC；详情链接：http://cmgds.marine.usgs.gov/fan_info.php?fan=SI209SC），振动柱样则由蒙特雷湾水族馆研究所（Monterey Bay Aquarium Research Institute）的远程操控潜水器（Remotely Operated Vehicle, ROV）Doc Ricketts于2010年采集（航次编号：W-1-10-SC；详情链接：http://cmgds.marine.usgs.gov/fan_info.php?fan=W110SC）。
电子表格文件"PalosVerdesCores_Info.xlsx"收录了岩心名称、采样位置及岩心长度信息。
电子表格文件"PalosVerdesCores_MSCLdata.xlsx"包含多传感器岩心记录仪（Multi-Sensor Core Logger）采集的纵波速度、伽马射线密度及磁化率全岩心测井数据。
压缩文件夹"PalosVerdesCores_Photos.zip"内含各岩心存档半段的连续岩心照片，文件格式为.bmp。
电子表格文件"PalosVerdesCores_GrainSize.xlsx"收录了激光粒度分析的样品信息与测试结果。
电子表格文件"PalosVerdesCores_Radiocarbon.xlsx"包含放射性碳测年的样品信息、测试结果及校正年龄数据。
压缩文件夹"PalosVerdesCores_CT.zip"内含原始计算机断层扫描（computed tomography, CT）图像文件，格式为DICOM。
PDF文件"PalosVerdesCores_Figures.pdf"整合展示了各岩心的各类数据，包括岩心描述柱状图。
本元数据文件专门针对"PalosVerdesCores_Radiocarbon.xlsx"文件所包含的信息进行说明。所有岩心样品均由美国地质调查局太平洋海岸与海洋科学中心归档保存。