Assertion: aquifer's region | /r/HasProperty | table s2
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Source sentences:
text: We analyzed major and trace element geochemistry and a broad spectrum of isotopic tracers (δ18O, δ2H, 87Sr/86Sr, 228Ra/226Ra) in shallow ground water and compared these to published (6, 21, 22) and new data of 83 samples from underlying Appalachian brines in deeper formations from the region (Table S2) to examine the possibility of fluid migration between the hydrocarbon producing Marcellus Formation and shallow aquifers in NE PA.