Browsing by Author "DGS Staff"
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Item Delaware: Its Rocks, Minerals, And Fossils(Newark, DE: Delaware Geological Survey, University of Delaware, 1992) DGS StaffMinerals are naturally occurring, inorganic substances with characteristic physical and chemical properties. Common examples found in Delaware are quartz (hard, glassy luster), mica (cellophane like pieces), and feldspar (waxy or pearly luster, cleavage). In nature minerals are usually found in mixtures with other minerals. A natural specimen containing several minerals is called "a rock." A common example is granite, which is a mixture of quartz, feldspar, mica, and usually other dark minerals. Fossils are any evidence, direct or indirect, of a pre-existing plant or animal in the rock record. The most popular area for collecting fossils in Delaware is the Chesapeake and Delaware Canal area.Item Generalized Geologic Map of Delaware, Postcard(Newark, DE: Delaware Geological Survey, University of Delaware, 2000) DGS StaffDelaware’s oldest rocks are metamorphic crystalline rocks of the central Appalachian Piedmont Physiographic Province. Atlantic Coastal Plain sediments overlie the crystalline rocks of the Piedmont and range in thickness from a feather edge at the Fall Line to approximately 9,000 feet in the southeastern corner of Delaware. Sediments range in age from Early Cretaceous to Holocene.Item Geology and Earth Resources of Delaware(Newark, DE: Delaware Geological Survey, University of Delaware, 1968) DGS StaffItem Laboratory Procedures Manual(Newark, DE: Delaware Geological Survey, University of Delaware, 1987-05) Kramer, M.G.; DGS Staff; Smith, C.T.Laboratory analyses of geologic samples are performed on a regular basis at the Delaware Geological Survey (DGS). These analyses produce valuable information used to assist the production of geologic and hydrologic maps and reports. Procedures used by the DGS for analyzing various aspects of geologic samples are described in this manual. The purpose of this manual is to standardize and document these procedures. Care and skill in laboratory operations are essential to the quality of the resulting interpretations.Item Long-Range Plan For Water Resources Investigations In Delaware(Newark, DE: Delaware Geological Survey, University of Delaware, 1961-02) DGS StaffIn order to obtain sufficient data which will enable the State to develop its water resources to the fullest extent of which they are capable, a series of systematic investigations is necessary. A long-range plan describing these studies is the subject of this report. A brief discussion of water in Delaware is presented first to provide a proper background for the long-range plan. The plan itself merely outlines the overall objectives and types of investigational work that must be pursued if the State is to develop its water resources wisely.Item Selected Fossil Collecting Locations in Delaware and Minerals in Delaware(Newark, DE: Delaware Geological Survey, University of Delaware, 1978-12) DGS StaffItem The Story of Your State Geological Survey's Search for Water(Newark, DE: Delaware Geological Survey, University of Delaware, 1956) DGS StaffThis is a brief story about water and the ways in which the Delaware Geological Survey helps insure that you will always have a plentiful supply of this precious natural resource.