एक ऐसी भौगोलिक संरचना जिसकी पारगम्यता निम्न से मध्य स्तर की होती है जो रिसाव के कारण एक से दुसरे जलदायी स्तर में क्षेत्रीय पैमैने पर जल प्रवाह के स्रोत के लिए उपयुकेत नहीं है।
A geological formation having low to medium permeability which is not sufficient to be a source of water to flow on a regional scale from one aquifer to the other due to leakage.
(′ak·wə′tärd)
(geology) A bed of low permeability adjacent to an aquifer; may serve as a storage unit for groundwater, although it does not yield water readily.
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A geological formation having low to medium permeability which is not sufficient to be a source of water to flow on a regional scale from one aquifer to the other due to leakage.
(′ak·wə′tärd)
(geology) A bed of low permeability adjacent to an aquifer; may serve as a storage unit for groundwater, although it does not yield water readily.
Content Courtesy - Answers.com
