Vulnerability of shallow ground water and drinking-water wells to nitrate in the United States: Model of predicted nitrate concentration in shallow, recently recharged ground water -- Input data set for carbonate rocks (gwava-s_crox)
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This data set represents the presence or absence of Valley and Ridge carbonate rocks in the conterminous United States. The data set was used as an input data layer...
本数据集用于表征美国本土毗连区域内岭谷碳酸盐岩（Valley and Ridge carbonate rocks）的赋存与否状态。该数据集曾被用作输入数据图层……
