Sediment Data from Vibracores Collected in 2021 From Central Florida Gulf Coast Barrier Islands

In 2021, scientists from the U.S. Geological Survey St. Petersburg Coastal and Marine Science Center (USGS SPCMSC) conducted ground penetrating radar (GPR) and sediment sampling surveys on barrier islands located along the central Florida Gulf Coast (CFGC), Pinellas County, Florida. This study investigated the past evolution of the CFGC from field sites at Anclote Keys, Caladesi and Honeymoon Islands, and Fort DeSoto to quantify changes that occurred along these barrier systems prior to the 20th century.

This data release serves as an archive of sedimentologic data from vibracores collected from back-barrier environments at Dutchman Key, Anclote Key, Caladesi Island, Honeymoon Island, Cabbage Key, Mullet Key, and St. Jean Key study sites on February 19 and May 11-13, 2021 (USGS Field Activity Number 2021-308-FA). GPR data collected during the same survey are available as a separate data release (Forde and others, 2023). Sedimentologic data from these cores, including descriptive core logs and grain-size data, are provided to characterize and date shallow subsurface stratigraphic units including beach, dune, and washover deposits. Samples selected for Optically Stimulated Luminescence (OSL) dating were analyzed at the USGS Luminescence Dating Laboratory (Denver, Colorado); those results will be made available as a separate data release. These data were targeted according to the methods outlined by Ciarletta and others (2023), with sediment cores positioned to investigate interpretations of barrier-island evolution from surface morphology. Acquisition of sediment cores and analyses of core lithology and grain size follow the methods of Buster and others (2018), with modifications for high-resolution photography after Ciarletta and others (2023).

Buster, N.A., Bernier, J.C., Brenner, O.T., Kelso, K.W., Tuten, T.M., and Miselis, J.L., 2018, Sediment data from vibracores collected in 2016 from Fire Island, New York: U.S. Geological Survey Data Series 1100, https://doi.org/10.3133/ds1100.

Ciarletta, D.J., Miselis, J.L., Bernier, J.C., Forde, A.S., and Mahan, S., 2023, Reconstructing the geomorphic evolution and sediment budget history of a dynamic barrier island: Anclote Key, Florida, in Wang, P., Royer, E., and Rosati, J.D., (eds.), Proceedings of the Coastal Sediments 2023, New Orleans, Louisiana, April 11-15, 2023: World Scientific Publishing, p. 1-11, https://doi.org/10.1142/9789811275135_0001.

Forde, A.S., Bernier, J.C., and Ciarletta, D.J., 2023, Ground penetrating radar and Global Positioning System data collected in 2021 from Pinellas barrier islands, Florida: U.S. Geological Survey data release, https://doi.org/10.5066/P9NV5NAP.

2021年，来自美国地质调查局圣彼得堡海岸与海洋科学中心（U.S. Geological Survey St. Petersburg Coastal and Marine Science Center, USGS SPCMSC）的科研人员，在佛罗里达州皮尼拉斯县的佛罗里达墨西哥湾中部海岸（Central Florida Gulf Coast, CFGC）沿线的障壁岛开展了探地雷达（Ground Penetrating Radar, GPR）与沉积物采样调查。本研究依托安克洛特礁群、卡拉德西岛、蜜月岛以及德索托堡的野外站点，探究佛罗里达墨西哥湾中部海岸的演化历史，以量化20世纪前该类障壁系统经历的变化。

本数据集为2021年2月19日及5月11日至13日，在荷兰人礁、安克洛特礁、卡拉德西岛、蜜月岛、卷心菜礁、马林鱼礁以及圣让礁的研究站点的障壁后环境中采集的振动岩心（vibracore）沉积学数据的存档（美国地质调查局野外活动编号：2021-308-FA）。本次调查同期采集的探地雷达数据已以独立数据集形式发布（Forde等人，2023）。本数据集提供了这些岩心的沉积学数据，包括岩心描述编录与粒度数据，用于表征海滩、沙丘及冲溢沉积等浅层地下地层单元并确定其年代。用于光释光（Optically Stimulated Luminescence, OSL）测年的样品，在美国地质调查局释光测年实验室（科罗拉多州丹佛市）完成分析，相关测年结果将以独立数据集形式发布。本数据集的选取依据Ciarletta等人（2023）提出的方法，通过布设沉积物岩心，以基于地表形貌探究障壁岛演化的相关解释。沉积物岩心的采集以及岩心岩性、粒度分析均遵循Buster等人（2018）的方法，并参考Ciarletta等人（2023）的方案增加了高分辨率摄影环节。

参考文献：
1. Buster, N.A., Bernier, J.C., Brenner, O.T., Kelso, K.W., Tuten, T.M. 及 Miselis, J.L., 2018, 《2016年纽约火岛采集的振动岩心沉积物数据》：美国地质调查局数据系列1100，https://doi.org/10.3133/ds1100.
2. Ciarletta, D.J., Miselis, J.L., Bernier, J.C., Forde, A.S. 及 Mahan, S., 2023, 《重建动态障壁岛的地貌演化与沉积物收支历史：以佛罗里达州安克洛特礁为例》，收录于Wang, P., Royer, E. 及 Rosati, J.D. 主编，《2023年海岸沉积会议论文集》，2023年4月11日至15日，路易斯安那州新奥尔良：世界科学出版社，第1-11页，https://doi.org/10.1142/9789811275135_0001.
3. Forde, A.S., Bernier, J.C. 及 Ciarletta, D.J., 2023, 《2021年佛罗里达州皮尼拉斯障壁岛采集的探地雷达与全球定位系统数据》：美国地质调查局数据集发布，https://doi.org/10.5066/P9NV5NAP.