D: dam Darwin data data catalog data dictionary data distribution policy data format data type database date datum daughter product David Sigurdson David Stevenson day Death Valley debris flow debris slide decay Dee Trent deep water deep-sea sediment deep-sea trench deer definition deforesting deformation degradation delta dendritic pattern density deposit deposition depositional environment depression depth descipline desert desert dust desert pavement desert playa desert varnish desertification desiccation desiduous tree detachment fault detritus Devils Postpile Devon Devonian diamond diatom diatomite dictionary differentiation digitial data dike dinoclagellate dinosaur diorite dip dip-slip fault dire wolf directed stress direction directivity discharge disconformity disintegration displacement dissolution dissolved load distance distortion distortion rate distributary diurnal variation divergent plate divergent plate boundary divergent plate margin DNA document dome Don L. Anderson Donald MacKenzie Douglas D. Rhodes Douglas M. Morton downslope downstream dowser drainage drainage basin drainage pattern draught dredge drill core drilling drought drumlin Drummand Matthews dry land Duane Hamann duck billed platypus dune duplex pendulum duration dust dust bowl dust storm dynamic system
U.S. Department of the Interior | U.S. Geological Survey URL: http://walrus.wr.usgs.gov/infobank/programs/html/school/D_keywords.html Page Contact: InfoBank staff Page Last Modified: Tue Dec 16 06:27:34 PST 2008 (wcs)