GEOLOGIC STRUCTURESArchitecture of bedrockStructural Geology !"ha#e"$ !arra%ge&e%t$ !i%terrelatio%"hi#" of bedrock !u%it" ' force" that cau"e the&(eha)ior of rock" to "tre"" ' "trai%Ela"tic!Ela"tic li&it*la"tic(rittleStressStrainStructure" a" a Record of the Geologic *a"tGeologic &a#" a%d field &ethod"!Ob"er)atio%" of outcrops!Geologic map!Strike a%d di# Original horizontalityStrike Angle of dip Direction of dip Sy&bol"!Geologic cro"" "ectio%Structure" a" a Record of the Geologic *a"tGeologic &a#" a%d field &ethod"!Ob"er)atio%" of outcrops!Geologic &a#!Strike a%d di# Original horizontalityStrike Angle of dip Direction of dip Sy&bol"!Geologic cro"" "ectio%Structure" a" a Record of the Geologic *a"tGeologic &a#" a%d field &ethod"!Ob"er)atio%" of outcrops!Geologic &a#!Strike a%d di# Original horizontalityStrike Angle of dip Direction of dip Symbols!Geologic cro"" "ectio%+OL,SAnticline vs. syncline!Hinge line (axis)!Limb!Axial plane*lu%gi%g foldStructuraldo&eStructuralba"i%+OL,SA%ticli%e )"- "y%cli%e!.i%ge li%e /a0i"1!Li&b!A0ial #la%ePlunging foldStructuraldo&eStructuralba"i%+OL,SA%ticli%e )"- "y%cli%e!.i%ge li%e /a0i"1!Li&b!A0ial #la%e*lu%gi%g foldStructuraldomeStructuralbasin+OL,SI%ter#reti%g fold"!O#e% fold!I"ocli%al fold!O)ertur%ed fold!Recu&be%t fold+racture" i% rock2oi%t"!Colu&%ar 3oi%ti%g!Sheet 3oi%ti%g!2oi%t "etFaults!ip!slip faults! normal and reverseFoot"all vs. #anging "all!Normal faultGrabe%4 Rift.or"t 4faultblock &ou%tai% ra%ge+racture" i% rock2oi%t"!Colu&%ar 3oi%ti%g!Sheet 3oi%ti%g!2oi%t "et+ault"!,i#"li# fault" %or&al a%d re)er"e+oot5all )"- ha%gi%g 5all!Normal faultGraben$ %iftHorst $fault!bloc& mountain range+racture" i% rock+ault"!Reverse fault'#rust fault! lo" angle reverse fault!Strike-Slip faultLeftlateral )"- rightlateral+racture" i% rock+ault"!Reverse faultThru"t fault lo5 a%gle re)er"e fault!Strike-Slip faultLeft!lateral vs. rig#t!lateral