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• Sandra Smim

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Fault Surface Maps: Three-dimensional Structural Reconstructions and Their Utility in Exploration and Mining Eric Seedorff*, Carson A. Richardson, and David J. Maher Lowell Institute for Mineral Resources, Department of Geosciences, University of Arizona, 1040 East 4th Street, Tucson, Arizona 85721-0077

ABSTRACT Mineral deposits that have been dismembered and tilted by syn- or post-mineral IDXOWV FDQ EH VWUXFWXUDOO\ UHFRQVWUXFWHG WR DFKLHYH VFLHQWL¿F DQG SUDFWLFDO REMHFWLYHV )DXOWVXUIDFHPDSVDUHSODQYLHZSURMHFWLRQVRIWKHJHRORJ\RIWKHIRRWZDOODQGKDQJLQJ ZDOOVXUIDFHVRIDIDXOWVKRZLQJURFNXQLWVIDXOWVDQGRWKHUIHDWXUHV+HUHZHGHVFULEH KRZWRFRQVWUXFWIDXOWVXUIDFHPDSVKRZWRSUHVHQWWKHPHI¿FLHQWO\LQSXEOLFDWLRQVDQG KRZWRXVHWKHPWRPDNHWKUHHGLPHQVLRQDOVWHSZLVHVWUXFWXUDOUHFRQVWUXFWLRQVUHVWRULQJWKHKDQJLQJZDOOPDSDJDLQVWWKHIRRWZDOOPDS$UHDVRIFRPSOH[JHRORJ\FRQWDLQLQJ PXOWLSOHJHQHUDWLRQVRIIDXOWVZLWKGLIIHULQJVOLSGLUHFWLRQVHVSHFLDOO\EHQH¿WIURPWKHXVH RIIDXOWVXUIDFHPDSVIRUWKUHHGLPHQVLRQDOUHFRQVWUXFWLRQV:KHUHWKHUHDUHDGHTXDWH JHRORJLFPDUNHUVDQGWKUHHGLPHQVLRQDOFRQWUROWKHUHVWRUDWLRQUHVXOWVLQQXPHURXVVOLS YHFWRUVDFURVVWKHIDXOWVXUIDFHIURPZKLFKWKHPDJQLWXGHRIVOLSLQWKHSODQHRIWKHIDXOW FDQEHFDOFXODWHGIRUHDFKYHFWRU$GGLWLRQDOJHRORJLFFRQVWUDLQWVDUHUHTXLUHGWRDVVHVV WKHDPRXQWRIWLOWLQJWKDWRFFXUUHGFRQFXUUHQWZLWKVOLSRQHDFKJHQHUDWLRQRIIDXOWV7R achieve a three-dimensional structural reconstruction of an area, the restoration process LVUHSHDWHGIURP\RXQJHVWWRROGHVWIDXOWVZRUNLQJEDFNZDUGLQWLPH 2OGHUIDXOWVDSSHDUDVVLQJOHOLQHVFRPPRQO\NQRZQDVFXWRIIOLQHVRQERWKWKH IRRWZDOO DQG KDQJLQJ ZDOO VXUIDFHV RI \RXQJHU IDXOWV )DXOWV WKDW PRYHG V\QFKURQRXVZLWKWKHIDXOWVXUIDFHEHLQJPDSSHGHJVSOD\VRIWKHVDPHIDXOW DSSHDUDVD VLQJOHEUDQFKOLQHWUDFHLQWKHVDPHSRVLWLRQLQERWKIRRWZDOODQGKDQJLQJZDOOPDSV