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Showing 1 to 2 of 2 for “"Robles Formation"”.
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Petrologic studies of the Robles Formation, south central Puerto Rico
<p>The Robles Formation of south central Puerto Rico is composed primarily of andesitic lavas and pyroclastic rocks. Two important andesitic lava members are present within the formation. One, the Lapa Lava Member, is enriched in potassium. Another, the Las Tetas Lava Member, is poor in potassium. …
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Coupled Surface Water-Groundwater Model to Analyze Sustainability of the Atascadero Subbasin
… hydraulically separated sub-region of the Paso Robles Groundwater Basin. Three local cities operate approximately 40 wells to pump the Subbasin for their entire water supply needs. Past studies have questioned sustainability of the Subbasin as the combined pumping rate by the three cities is …