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February 1992 2 Contents Continued February. 1992 BULLETIN HOUSTON GEOLOGICAL SOCIETY SEISMIC STRATIGRAPHIC MODEL OF A FAILED SHELF EDGE UPDIP LIMIT OF THE HACKBERRY EMBAYMENT, SW LOUISIANA HACKBERRY SEQUENCE BOUNDARY 0 1 2 HIGHSTAND SYSTEMS TRACT I I I 1 I TRANSGRESSIVE SYSTEMS TRACT TST MILES LOWSTAND SYSTEMS TRACT LST YERTXAL EXMKIERATION - 11 DOWNLAP SURFACE DLS HACKBERRY SHALE LOWER HACKBERRY SHALE & SANDSTONE Find out more about the Hackberry Depositional System at the HGS Luncheon on Wednesday, February 26,1992. HAPPY VALENTINE'S DAY! IN THIS ISSUE. .. - Spotlight on Caspian Sea ....................................... Page 18 - Land and Sea of the Midnight Sun .............................. Page 20 - Household Hazardous Waste: Cleaning Products ................ Page 22 - Status Report of Superfund Sites in Harris County. .............. Page 24 PLUS MORE! 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