Ground-water resources of the sand-dune area north of Coos Bay, Oregon

Sources and causes of dissolved iron in water from a dune-sand aquifer near Coos Bay and North Bend, Oregon

“…The dune-sand aquifer is underlain locally by Pleistocene-age marine deposits (Robison, 1973), but is most commonly underlain by fine-grained Tertiary deposits of sandstone, siltstone, and mudstone of late Eocene age (Brown and Newcomb, 1963;Baldwin, 1964). The Pleistocene deposits where present are underlain by the fine-grained Tertiary deposits.…”

Geochemistry of iron in a sand dune aquifer, near Coos Bay and North Bend, Oregon

“…The sand dunes are about 160 feet thick in the south along the coast and pinch out to the northeast. The dune aquifer is underlain in a few places by Pleistocene marine deposits (Robison, 1973), but is most commonly underlain by fine-grained older marine deposits of sandstone, siltstone, and mudstone of late Eocene age (Brown and Newcomb, 1963;Baldwin, 1964). The fine-grained Eocene deposits also underlie the Pleistocene deposits.…”

Ground water in the coastal dune area near Florence, Oregon

“…CONTRIBUTIONS TO THE HYDROLOGY OF THE UNITED STATES Preliminary studies of the dune area north of Coos Bay (about 40 miles south of Florence) by the Geological Survey (Brown and Newcomb, 1962), and independent studies made later by the Pacific Power & Light Co., have shown that the dune sand there stores and will yield to wells large quantities of water of good quality. The water in that and similar bodies of dune sand represents a substantial source of additional perennial supplies in much of the coastal region.…”