Cat Island marine core grain-size data from field activity 10BIM06

Scientists from the U.S. Geological Survey (USGS), St. Petersburg Coastal and Marine Science Center (SPCMSC), in collaboration with the U.S. Army Corps of Engineers (USACE), conducted geophysical and sedimentological surveys around Cat Island, the westernmost island in the Mississippi-Alabama barrier island chain. The objectives of the study were to understand the geologic evolution of Cat Island relative to other barrier islands in the northern Gulf of Mexico and to identify relationships between the geologic history, present day morphology, and sediment distribution. This report serves as an archive of 11 terrestrial and 29 marine sediment vibracores collected August 4-6 and October 20-22, 2010. Geographic Information System (GIS) data products include marine and terrestrial core locations and 2007 shoreline. Additional files included: marine and terrestrial core description logs, core photos, grain-size analysis, optically stimulated luminescence (OSL) dating and Carbon-14 dating locations and results, Field Activity Collection System (FACS) logs, and formal Federal Geographic Data Committee (FDGC) metadata (please refer to the data products and downloads page at http://pubs.usgs.gov/ds/xxx/Data_Products_and_Downloads_Cat_cores.html).

美国地质调查局（U.S. Geological Survey, USGS）下属圣彼得堡海岸与海洋科学中心（St. Petersburg Coastal and Marine Science Center, SPCMSC）的科学家，联合美国陆军工程兵团（U.S. Army Corps of Engineers, USACE），在密西西比-阿拉巴马障壁岛链最西端的卡特岛（Cat Island）周边开展了地球物理与沉积学调查。本研究的目标为明确卡特岛相对于墨西哥湾北部其他障壁岛的地质演化历程，并厘清其地质历史、现代地貌与沉积物分布之间的关联。本报告作为2010年8月4日至6日、10月20日至22日采集的11个陆上与29个海洋沉积物振动岩芯的归档资料。地理信息系统（Geographic Information System, GIS）数据产品包含海洋与陆上岩芯点位以及2007年海岸线数据。附带的其他文件包括：海洋与陆上岩芯描述日志、岩芯照片、粒度分析、光释光（optically stimulated luminescence, OSL）测年与碳-14测年的点位及结果、野外活动采集系统（Field Activity Collection System, FACS）日志，以及正式的联邦地理数据委员会（Federal Geographic Data Committee, FDGC）元数据（具体请参阅http://pubs.usgs.gov/ds/xxx/Data_Products_and_Downloads_Cat_cores.html的数据产品与下载页面）。