Glossary_14-19 - GLOSSARY FOR LECTURE 13 DANSGAARD-OESCHGER...

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GLOSSARY FOR LECTURE 13 DANSGAARD-OESCHGER EVENTS - Sudden and short-lived significant warm events during the last glacial phase that are recorded in Greenland ice-core oxygen- isotope records. EEMIAN WARM STAGE Term used to define last interglacial phase in Europe. HEINRICK EVENTS - Sudden and short-lived extreme cold events during the last glacial phase represented by bands of ice-rafted debris in the North Atlantic marine record. Also recorded in Greenland ice-core oxygen-isotope records. ICE-RAFTING Process by which debris gets carried out to see by ice bergs which subsequently melt causing debris to settle on the sea floor. LITTLE ICE AGE EVENT A sudden widespread cooling event over lands around north Atlantic that occurred between 700 and 200 years ago. PENULTIMATE INTERGLACIAL PHASE The last interglacial phase that occurred about 125,000 years ago. SANGAMON INTERGLACIAL - Term used to define last interglacial phase in eastern North America. WEICHSELIAN COLD STAGE Term used to define the last glacial phase in Europe. WISCONSIN GLACIATION - Term used to define the last glacial phase in eastern North America. YOUNGER DRYAS EVENT A sudden widespread cooling event that occurred globally about 12,900-11,500 years ago.
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GLOSSARY FOR LECTURE 14 BARRIER ISLAND – Island separated by from the mainland by a salt marsh. It generally consists of a multiple system of beach ridges and is separated from other barrier islands by inlets that allow exchange of seawater with lagoon water. BAY – A body of water partly enclosed by land. BAYMOUTH BAR – A sandbar that completely crosses a bay, sealing it off from the main body of water. BEACH FACE – The part of the beach environment that is a nearly planar part of the beach profile below the berm and normally exposed to the swash action from waves. BERM – The relatively flat part of a beach profile produced by deposition from waves; the part of the beach where people sunbathe. BLUFF – A vertical face composed of soil material. WAVE OF OSSILATION – A water wave in which water particles follow a circular path with little forward motion. WAVE OF TRANSITION BREAKER) – A water wave in which the individual particles of water move in the direction of wave travel, as in a broken wave. DUNE – A mound, bank, ridge, or hill of loose, windblown granular material (generally sand), either bare or covered with vegetation. It is capable of moving but maintains its characteristic shape. DROWNED VALLEY - A river valley flooded by the sea when sea level rises or land subsides. ESTUARY - A tunnel shaped inlet of the sea that formed when a rise in sea level or subsidence of land caused the mouth of a river to be flooded. Along the seashore the commonly contain a mix of salt and fresh water. GLACIAL LOADING AND UNLOADING –
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This note was uploaded on 07/25/2008 for the course ISP 203A taught by Professor Larson during the Fall '08 term at Michigan State University.

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Glossary_14-19 - GLOSSARY FOR LECTURE 13 DANSGAARD-OESCHGER...

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