Sediment texture and composition data collected aboard R/V Weatherbird II cruises WB-0812 and WB-1012 and R/V Pelican cruise PE12-22 in the northern Gulf of Mexico from 2012-04-09 to 2012-10-18

This dataset contains sediment texture and composition data collected aboard R/V Weatherbird II cruises WB-0812 and WB-1012 and R/V Pelican cruise PE12-22 in the northern Gulf of Mexico from 2012-04-09 to 2012-10-18. Sediment texture and composition data were generated for selected core sub-samples at 2mm sampling intervals for “surficial unit” and 5mm sampling resolution intervals to the base of cores. Sediment texture values were expressed as percent gravel, sand, silt, and clay. Percent of mud can be calculated by combining percent silt and clay. Sediment composition was expressed as percent total organic matter (TOM) measured by loss on ignition (LOI), percent carbonate content measured by acid leaching, and the percent insoluble residue (IR), which was likely dominated by terrigenous clastic (land-derived) sediment sources. Cruise documentation was provided for each of the R/V Weatherbird II cruises. The cruises were led by chief scientists Dr. Steve Murawski and Dr. David Hollander (WB-0812), Dr. David Hollander (WB-1012). The R/V Pelican cruise PE12-22 was led by Mark Pagani and additional information regarding this cruise can be found in the R2R repository: https://www.rvdata.us/search/cruise/PE12-22.

本数据集包含2012年4月9日至2012年10月18日期间，在墨西哥湾北部通过研究科考船“风云鸟二号”（R/V Weatherbird II）的WB-0812、WB-1012航次以及“鹈鹕号”（R/V Pelican）的PE12-22航次采集的沉积物纹理与组分数据。针对选定的岩心子样本，沉积物纹理与组分数据的采样方式为：“表层单元”以2mm为采样间隔，岩心底部则采用5mm采样分辨率。沉积物纹理值以砾石、砂、粉砂和黏土的百分比表示，粉砂与黏土的百分比之和可换算为泥质含量百分比。沉积物组分则以灼烧减重法（loss on ignition, LOI）测得的总有机质（total organic matter, TOM）占比、酸浸法测得的碳酸盐含量占比，以及以陆源碎屑（陆源成因）沉积物为主的不溶残余物（insoluble residue, IR）占比来表征。“风云鸟二号”各航次均配有配套航次文档，其中WB-0812航次由史蒂夫·穆拉夫斯基（Steve Murawski）博士与戴维·霍兰德（David Hollander）博士担任首席科学家，WB-1012航次由戴维·霍兰德博士担任首席科学家。“鹈鹕号”PE12-22航次由马克·帕加尼（Mark Pagani）主导，该航次的更多信息可在R2R数据库中查询：https://www.rvdata.us/search/cruise/PE12-22。