2008CoreFieldDescriptions: PDF converted hand-written descriptions of 20 cores from offshore Puerto Rico and the U.S. Virgin Islands for cores collected by the U.S. Geological Survey in 2008.

In 2008, as a collaborative effort between Woods Hole Oceanographic Institution and the U.S. Geological Survey, 20 giant gravity cores were collected from areas surrounding Puerto Rico and the U.S. Virgin Islands. The regions sampled have had many large earthquake and landslide events, some of which are believed to have triggered tsunamis. The objective of this coring cruise, carried out aboard the National Oceanic and Atmospheric Administration research vessel Seward Johnson, was to determine the age of several substantial slope failures and seismite layers near Puerto Rico in an effort to map their temporal distribution. Data gathered from the cores collected in 2008 and 11 archive cores from the Lamont-Doherty Earth Observatory are included in this report. These data include lithologic logs, core summary sheets, x-ray fluorescence, wet-bulk density, magnetic susceptibility, grain-size analyses, radiographs, and radiocarbon age dates.

2008年，伍兹霍尔海洋研究所（Woods Hole Oceanographic Institution）与美国地质调查局（U.S. Geological Survey）联合开展合作项目，在波多黎各及美属维尔京群岛周边海域采集了20根大型重力岩心。该采样区域曾发生多起大规模地震与滑坡事件，其中部分事件被认为曾引发海啸。本次岩心钻探航次依托国家海洋和大气管理局（National Oceanic and Atmospheric Administration）“苏厄德·约翰逊”号（Seward Johnson）研究船执行，其目标是测定波多黎各附近多处大型斜坡失稳事件与震积岩层的年代，以绘制其时间分布图谱。本报告收录了2008年采集的岩心数据，以及拉蒙特-多尔蒂地球观测站（Lamont-Doherty Earth Observatory）的11份存档岩心数据。上述数据涵盖岩性测井记录、岩心汇总表、X射线荧光光谱数据、湿体密度测试结果、磁化率数据、粒度分析报告、X光影像以及放射性碳定年数据。