GMX_FAC: usSEABED facies data for the entire U.S. Gulf of Mexico and Caribbean (Puerto Rico and U.S. Virgin Islands)

The facies data layer (_FAC.txt) is a point coverage of known sediment samplings, inspections, and probings from the usSEABED data collection and integrated using the software system dbSEABED.
The facies data layer (_FAC.txt)represents concatenated information about components (minerals and rock type), genesis (igneous, metamorphic, carbonate, terrigenous), and other appropriate groupings of information about the seafloor.
The facies data are parsed from written descriptions from cores, grabs, photographs, and videos, and may apply only to a subsample as denoted by the Top, Bottom, and SamplePhase fields.
Lack of values in a defined facies field does not necessarily imply lack of the components defining that field, but may imply a lack of data for that field.

沉积相数据层（facies data layer，_FAC.txt）为取自usSEABED数据集的已知沉积物采样、勘查与探测结果的点覆盖数据集，并通过dbSEABED软件系统完成整合。
该沉积相数据层（_FAC.txt）包含拼接整合后的海底相关信息，涵盖组分（矿物与岩石类型）、成因（火成、变质、碳酸盐质、陆源）以及其他适配的信息分组。
相数据源自岩心、抓斗取样、照片及视频的书面描述记录，且仅可应用于由Top、Bottom及SamplePhase字段标注的子样品。
已定义的相字段中缺失数值，并不必然代表该字段对应的组分缺失，仅可能意味着该字段缺乏相关数据。