NCSO GEOLOGICAL MAPPING EVENT 2019 QUESTIONS …In which rock type are Wind Cave National Park and...
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NCSO GEOLOGICAL MAPPING EVENT 2019 QUESTIONS (NOTE: Questions are worth one point each unless otherwise marked. 65 points total) I. TECTONIC PLATES (SEE FIGURE I) 1. What tectonic plate is Phoenix, Arizona part of? A. North American B. Nazca C. Eurasian D. Scotia E. None of these 2. Which of these is the closest plate boundary to Phoenix? It is the boundary with the __________. A. Caribbean Plate B. Scotia Plate C. Pacific Plate D. Arabian Plate E. Cocos Plate 3. (2 pts) Why is Iceland located on two plates? A. It is on a divergent plate boundary. B. It is on a convergent plate boundary. C. It is on a transform plate boundary. D. It is on a subduction zone boundary. E. It is on a fossil plate boundary. 4. Which of these areas of active volcanoes is NOT part of the “Ring of Fire” A. The Aleutians Islands. B. The Andes. C. Philippines. D. The Hawaiian Islands. E. New Zealand. 5. Which of these plates does not include continental crust? A. African B. Indian C. South American D. Pacific E. Australian 6. Which of these areas is/are likely to suffer from the effects of tsunamis? A. The Hawaiian Islands B. The Aleutian Islands C. The west coast of South America D. Indonesia E. All of these
Transcript of NCSO GEOLOGICAL MAPPING EVENT 2019 QUESTIONS …In which rock type are Wind Cave National Park and...
NCSOGEOLOGICALMAPPINGEVENT2019 QUESTIONS(NOTE:Questionsareworthonepointeachunlessotherwisemarked.65pointstotal)I.TECTONICPLATES(SEEFIGUREI)1.WhattectonicplateisPhoenix,Arizonapartof?
A. NorthAmericanB. NazcaC. EurasianD. ScotiaE. Noneofthese
2.WhichoftheseistheclosestplateboundarytoPhoenix?Itistheboundarywiththe__________.
A. CaribbeanPlateB. ScotiaPlateC. PacificPlateD. ArabianPlateE. CocosPlate
3.(2pts)WhyisIcelandlocatedontwoplates?
A. Itisonadivergentplateboundary.B. Itisonaconvergentplateboundary.C. Itisonatransformplateboundary.D. Itisonasubductionzoneboundary.E. Itisonafossilplateboundary.
4.WhichoftheseareasofactivevolcanoesisNOTpartofthe“RingofFire”
A. TheAleutiansIslands.B. TheAndes.C. Philippines.D. TheHawaiianIslands.E. NewZealand.
5.Whichoftheseplatesdoesnotincludecontinentalcrust?
A. AfricanB. IndianC. SouthAmericanD. PacificE. Australian
6.Whichoftheseareasis/arelikelytosufferfromtheeffectsoftsunamis?
A. TheHawaiianIslandsB. TheAleutianIslandsC. ThewestcoastofSouthAmericaD. IndonesiaE. Allofthese
7.Whichoftheseareasistheleastlikelytosufferfromlandslides?A. WesternCaliforniaB. WesternNorthCarolinaC. WesternSouthAmericaD. EasternNorthCarolinaE. NorthernIndiaandNepal
II.NORTHWESTDURHAMQUADRANGLE,NORTHCAROLINA(FIGUREII) ThisdiagramistakenfromtheGeologicalMapoftheNorthwestDurham7.5-minutequadrangle.UnitZadltis“andesitictodaciticlavasandtuffs”ofLateProterozoicage;UnitTrcs/si1is“pinktotanarkosicsandstoneandsiltstoneofTriassicage”;andunitJdis“blacktogreenishblackdiabase/basalt,locallycontainingolivine.”8.Whattypeofdiagramisthis?
A. sedimentaryfaciesisopachmapB. geologicalcrosssectionC. stratigraphiccolumnD. MercatorprojectionE. Fencecorrelationdiagram
9.(2pts)WhatisthenatureofthecontactbetweenunitZadltandTrcs/si1?
A. unconformityB. conformablesedimentarybedsC. conformablesequenceoflavaflowD. intrusiveE. fault
10.(2pts)WhatisthenatureofthecontactbetweenunitJdandTrcs/si1?
A. unconformityB. conformablesedimentarybedsC. conformablesequenceoflavaflowD. intrusiveE. fault
11.WhatisthenatureofthecontactbetweenunitJdandZadlt?
A. unconformityB. conformablesedimentarybedsC. conformablesequenceoflavaflowD. intrusiveE. fault
12.(2pts)WhatisthenatureofunitJdatthelocationmarkedX?A. athrustfaultB. arecumbentdikeC. ametamorphicisogradD. alavaflowE. asill
III.BLACKHILLS,SOUTHDAKOTA(FIGUREIIIA&B)13.InwhichrocktypeareWindCaveNationalParkandJewelCaveNationalMonument?
A. WindCave–schist;JewelCave–sandstoneB. WindCave–limestone;JewelCave–sandstoneC. WindCave–limestone;JewelCave–graniteD. WindCave–sandstone;JewelCave–graniteE. WindCave–limestone;JewelCave–limestone
14.Whichistheoldestrocktypedepicted?
A. sandstoneB. graniteC. schistD. limestoneE. somethingelse
15.BedsofDakotasandstonenearRapidCitydipinwhichdirection?
A. northB. eastC. southD. westE. northwest
16.Theoverallstructureofthisareaisbestdescribedasa/an:
A. synclineB. thrustfaultC. domeD. basinE. plungingsyncline
17.(2pts)ExaminethepictureofMountRushmore.Giventheinformationofthegeologicalblockdiagram,whatrocktypearethepresidents’heads,andwhattypearethedark-coloredrocksindicatedbythewhiteXbeneathGeorgeWashington?
A. Heads–granite;Darkrocks–schistB. Heads–granite;Darkrocks–limestoneC. Heads–schist;Darkrocks–sandstoneD. Heads–limestone;Darkrocks–graniteE. Heads–sandstone;Darkrocks–schist
18.(2pts)ThedarkrocksindicatedbytheXare______________thanthelightrocksoftheheads.Thedarkrocksrepresenta/an______________surroundedbythelightrocks.
A. younger;windowB. older;xenolithC. younger;protolithD. older;protolithE. younger;lavaflow
IV.FANTASYQUADRANGLE(FIGUREIV) Therearedifferentsortsofgeologiccontacts.Giventhefollowingchoices,foreachcontactdescribedbelow(questions19-25)intheFantasyQuadrangle,selectthecorrectresponse:
A. ConformablesedimentarycontactB. Unconformity(anytypeofunconformablecontact)C. IntrusivecontactD. FaultcontactE. Noneofthese
19.ThecontactbetweentheMonteithgraniteandtheD.H.Hilllimestone20.ThecontactbetweentheReynoldsFormationandtheD.H.Hilllimestone21.ThecontactbetweentheMonteithgraniteandthediabase22.ThecontactbetweentheWitherssandstoneandtheJordanFormation23.ThecontactbetweenthealluviumandtheJordanFormation24.ThecontactbetweentheAventFerryquartziteandtheWesternFormation25.ThecontactbetweentheMonteithgraniteandtheReynoldsFormation(Eventhoughitisnotvisibleonthemap)26.Whatisthefeatureindicatedbytheheavyblackdashedline?
A. Axis(hingeline)ofarecumbentnappe.B. Axis(hingeline)ofaplunginganticlineC. NormalfaultD. Strike-slipfaultE. Axis(hingeline)ofaplungingsyncline
27.(2pts)WhatisthefeatureB-B’?A. NormalfaultB. ReversefaultC. ThrustfaultD. Strike-slipfault(eithertype)E. Subductionzone
28.(2pts)WhendidA-A’form?
A. AfterthealluviumwasdepositedB. BeforethealluviumbutafterthediabaseC. BeforethediabasebutaftertheMonteithgraniteD. BeforetheMonteithgranitebutaftertheWesternFormationE. Noneoftheseiscorrect
29.(3pts)Whichofthefollowingisthecorrectsequence(oldesttomostrecent;i.e.firsttolast)?
A. CarterRhyolite,Diabase,MonteithGranite,AventFerryQuartzite,Alluvium,WithersSandstone
B. AventFerryQuartzite,MonteithGranite,CarterRhyolite,WithersSandstone,Diabase,Alluvium
C. WithersSandstone,Alluvium,CarterRhyolite,MonteithGranite,AventFerryQuartzite,Diabase
D. AventFerryQuartzite,CarterRhyolite,WithersSandstone,MonteithGranite,Diabase,Alluvium
E. MonteithGranite,WithersSandstone,Diabase,CarterRhyolite,AventFerryQuartzite,Alluvium
V.EASTMESAQUADRANGLE,NEWMEXICO(FIGUREV)30.(2pts)Inthismap,notethe(parallel)relationshipbetweenmostofthegeologicalcontactsandthetopographiccontourlines.(Ignorethepurplelines.)Whatdoesthistellyou?
A. TherocksaremetamorphicB. TherocksaredippingdownstreamtothewestC. TherocksareinhorizontallayersD. TherocksarefoldedgentlyE. Theyoungestrocksareinthevalleys
31.(3pts)Whatisthecorrectsequenceoftheserockunits,fromtheoldesttotheyoungest?
A. Kds,Js,Jeu,Kdo,JzB. Jeu,Js,Jz,Kds,KdoC. Js,Kds,Jeu,Jz,KdoD. Kdo,Kds,Jeu,Jz,JsE. Kdo,Kds,Jz,Js,Jeu
VI.APEXQUADRANGLE,NORTHCAROLINA(FIGUREVI) ThesearetwocontouredSchmidtequal-areastereonetplotsforpolestofoliation(A)andpolestobedding(B)intheApexQuadrangle,NorthCarolina.32.(2pts)Whatisthegeneraloraverageattitude/orientationrepresentedinA?
A. Vertical/steeplydippingB. Horizontal/gentlydippingC. StrikingNE-SWanddippingNED. StrikingNE-SWanddippingSWE. StrikingNW-SEanddippingSW
33.(2pts)Whatisthegeneraloraverageattitude/orientationrepresentedinB?
A. Vertical/steeplydippingB. Horizontal/gentlydippingC. StrikingNE-SWanddippingNED. StrikingNE-SWanddippingSWE. StrikingNW-SEanddippingSW
VII.MINORCANYON(FIGUREVII)34.(2pts)PriortothedepositionoftheLarsontonFormation,whichoftheseunitswastheyoungest(mostrecent)toform?
A. LeetJunctionFm.B. TarburgFm.C. BirklandFm.D. GraniteE. Dike
35.(2pts)WhichunitismostlikelytocontainpebbleserodedfromtheDike?
A. LarsontonFm.B. FosterCityFm.C. BirklandFm.D. LutgradFm.E. Granite
36.(3pts)WhatisonewaytotellthattheTarburgFormationisolderthantheHamlinvilleFormation?
A. TheMinorCanyonRiverflowsthroughit.B. ThegranitecutsthroughtheHamlinvilleFormation.C. ThedikedoesnotcutthroughtheTarburgFormation.D. TheTarburgFormationistilted;theHamlinvilleFormationishorizontal.E. TreesaregrowingontheHamlinvilleFormationbutnotontheTarburg
Formation.
VIII.OTHERQUESTIONS(nofigures)37.Aspecialtypeofcompassusedbygeologistsisknownasa/an_____________Compass.
A. RietveldtB. McKinleyC. AshburnD. BruntonE. Suunto
38.Thistypeofcompassisuniqueinpartbecauseit
A. Includesamirrorandaninclinometer.B. DoesnotneedtobecorrectedfortheEarth’smagneticdeclination.C. OnlyworksintheNorthernHemisphere.D. Hasanall-digitaldisplay.E. Comeswithabuilt-inGPSunit.
39.(4pts)Whataretwowaystodistinguishasynclinefromananticline?(ThisquestionisTiebreaker#1)40.(4pts)Thereisarocksetinplasteratthefrontoftheroom.Useyourinclinometerorcompasstomeasurethedipoftherocksample,orsimplyestimateit.Examinetherocksampleinthebox,butdonotpickitup.Notethenortharrow.Whatisthecorrectstrikeanddipofthebeddinginthisrock?(ThisquestionisTiebreaker#2) Strike:___________________ Dip:___________________
NCSOGEOLOGICALMAPPINGEVENT2019 FIGURESI.TECTONICPLATES
II.NORTHWESTDURHAMQUADRANGLE,NORTHCAROLINA
III.BLACKHILLS,SOUTHDAKOTA A.
B.
IV.FANTASYQUADRANGLE
A
A’
B
B’
V.EASTMESAQUADRANGLE,NEWMEXICO
VI.APEXQUADRANGLE,NORTHCAROLINA
A. ProterozoicRocks
B. TriassicRocks
VII.MINORCANYON
NCSOGEOLOGICALMAPPINGEVENT2019 QUESTIONS(NOTE:Questionsareworthonepointeachunlessotherwisemarked.65pointstotal)CIRCLETHECORRECTANSWERI.TECTONICPLATES(SEEFIGUREI)1. A B C D E2. A B C D E3.(2pts) A B C D E4. A B C D E5. A B C D E6. A B C D E7. A B C D EII.NORTHWESTDURHAMQUADRANGLE,NORTHCAROLINA(FIGUREII) 8. A B C D E9.(2pts) A B C D E10.(2pts) A B C D E11. A B C D E12.(2pts) A B C D EIII.BLACKHILLS,SOUTHDAKOTA(FIGUREIIIA&B)13. A B C D E14. A B C D E15. A B C D E16. A B C D E17.(2pts) A B C D E18.(2pts) A B C D E
IV.FANTASYQUADRANGLE(FIGUREIV)19. A B C D E20. A B C D E21. A B C D E22. A B C D E23. A B C D E24. A B C D E25. A B C D E26. A B C D E27.(2pts) A B C D E28.(2pts) A B C D E29.(3pts) A B C D EV.EASTMESAQUADRANGLE,NEWMEXICO(FIGUREV)30.(2pts) A B C D E31.(3pts) A B C D EVI.APEXQUADRANGLE,NORTHCAROLINA(FIGUREVI)32.(2pts) A B C D E33.(2pts) A B C D E
VII.MINORCANYON(FIGUREVII)34.(2pts) A B C D E35.(2pts) A B C D E36.(3pts) A B C D EVIII.OTHERQUESTIONS(nofigures)37. A B C D E38. A B C D E39.(4pts)Whataretwowaystodistinguishasynclinefromananticline?(ThisquestionisTiebreaker#1)40.(4pts)Thereisarocksetinplasteratthefrontoftheroom.Useyourinclinometerorcompasstomeasurethedipoftherocksample,orsimplyestimateit.Examinetherocksampleinthebox,butdonotpickitup.Notethenortharrow.Whatisthecorrectstrikeanddipofthebeddinginthisrock?(ThisquestionisTiebreaker#2) Strike:___________________ Dip:___________________
NCSOGEOLOGICALMAPPINGEVENT2019 QUESTIONS(NOTE:Questionsareworthonepointeachunlessotherwisemarked.65pointstotal)I.TECTONICPLATES(SEEFIGUREI)1.WhattectonicplateisPhoenix,Arizonapartof?
F. NorthAmericanG. NazcaH. EurasianI. ScotiaJ. Noneofthese
2.WhichoftheseistheclosestplateboundarytoPhoenix?Itistheboundarywiththe__________.
F. CaribbeanPlateG. ScotiaPlateH. PacificPlateI. ArabianPlateJ. CocosPlate
3.(2pts)WhyisIcelandlocatedontwoplates?
F. Itisonadivergentplateboundary.G. Itisonaconvergentplateboundary.H. Itisonatransformplateboundary.I. Itisonasubductionzoneboundary.J. Itisonafossilplateboundary.
4.WhichoftheseareasofactivevolcanoesisNOTpartofthe“RingofFire”
F. TheAleutiansIslands.G. TheAndes.H. Philippines.I. TheHawaiianIslands.J. NewZealand.
5.Whichoftheseplatesdoesnotincludecontinentalcrust?
F. AfricanG. IndianH. SouthAmericanI. PacificJ. Australian
6.Whichoftheseareasis/arelikelytosufferfromtheeffectsoftsunamis?
F. TheHawaiianIslandsG. TheAleutianIslandsH. ThewestcoastofSouthAmericaI. IndonesiaJ. Allofthese
7.Whichoftheseareasistheleastlikelytosufferfromlandslides?F. WesternCaliforniaG. WesternNorthCarolinaH. WesternSouthAmericaI. EasternNorthCarolinaJ. NorthernIndiaandNepal
II.NORTHWESTDURHAMQUADRANGLE,NORTHCAROLINA(FIGUREII) ThisdiagramistakenfromtheGeologicalMapoftheNorthwestDurham7.5-minutequadrangle.UnitZadltis“andesitictodaciticlavasandtuffs”ofLateProterozoicage;UnitTrcs/si1is“pinktotanarkosicsandstoneandsiltstoneofTriassicage”;andunitJdis“blacktogreenishblackdiabase/basalt,locallycontainingolivine.”8.Whattypeofdiagramisthis?
F. sedimentaryfaciesisopachmapG. geologicalcrosssectionH. stratigraphiccolumnI. MercatorprojectionJ. Fencecorrelationdiagram
9.(2pts)WhatisthenatureofthecontactbetweenunitZadltandTrcs/si1?
F. unconformityG. conformablesedimentarybedsH. conformablesequenceoflavaflowI. intrusiveJ. fault
10.(2pts)WhatisthenatureofthecontactbetweenunitJdandTrcs/si1?
F. unconformityG. conformablesedimentarybedsH. conformablesequenceoflavaflowI. intrusiveJ. fault
11.WhatisthenatureofthecontactbetweenunitJdandZadlt?
F. unconformityG. conformablesedimentarybedsH. conformablesequenceoflavaflowI. intrusiveJ. fault
12.(2pts)WhatisthenatureofunitJdatthelocationmarkedX?F. athrustfaultG. arecumbentdikeH. ametamorphicisogradI. alavaflowJ. asill
III.BLACKHILLS,SOUTHDAKOTA(FIGUREIIIA&B)13.InwhichrocktypeareWindCaveNationalParkandJewelCaveNationalMonument?
F. WindCave–schist;JewelCave–sandstoneG. WindCave–limestone;JewelCave–sandstoneH. WindCave–limestone;JewelCave–graniteI. WindCave–sandstone;JewelCave–graniteJ. WindCave–limestone;JewelCave–limestone
14.Whichistheoldestrocktypedepicted?
F. sandstoneG. graniteH. schistI. limestoneJ. somethingelse
15.BedsofDakotasandstonenearRapidCitydipinwhichdirection?
F. northG. eastH. southI. westJ. northwest
16.Theoverallstructureofthisareaisbestdescribedasa/an:
F. synclineG. thrustfaultH. domeI. basinJ. plungingsyncline
17.(2pts)ExaminethepictureofMountRushmore.Giventheinformationofthegeologicalblockdiagram,whatrocktypearethepresidents’heads,andwhattypearethedark-coloredrocksindicatedbythewhiteXbeneathGeorgeWashington?
F. Heads–granite;Darkrocks–schistG. Heads–granite;Darkrocks–limestoneH. Heads–schist;Darkrocks–sandstoneI. Heads–limestone;Darkrocks–graniteJ. Heads–sandstone;Darkrocks–schist
18.(2pts)ThedarkrocksindicatedbytheXare______________thanthelightrocksoftheheads.Thedarkrocksrepresenta/an______________surroundedbythelightrocks.
F. younger;windowG. older;xenolithH. younger;protolithI. older;protolithJ. younger;lavaflow
IV.FANTASYQUADRANGLE(FIGUREIV) Therearedifferentsortsofgeologiccontacts.Giventhefollowingchoices,foreachcontactdescribedbelow(questions19-25)intheFantasyQuadrangle,selectthecorrectresponse:
F. ConformablesedimentarycontactG. Unconformity(anytypeofunconformablecontact)H. IntrusivecontactI. FaultcontactJ. Noneofthese
19.ThecontactbetweentheMonteithgraniteandtheD.H.HilllimestoneC20.ThecontactbetweentheReynoldsFormationandtheD.H.HilllimestoneB21.ThecontactbetweentheMonteithgraniteandthediabaseC22.ThecontactbetweentheWitherssandstoneandtheJordanFormationA23.ThecontactbetweenthealluviumandtheJordanFormationB24.ThecontactbetweentheAventFerryquartziteandtheWesternFormationA25.ThecontactbetweentheMonteithgraniteandtheReynoldsFormation(Eventhoughitisnotvisibleonthemap)B26.Whatisthefeatureindicatedbytheheavyblackdashedline?
F. Axis(hingeline)ofarecumbentnappe.G. Axis(hingeline)ofaplunginganticlineH. NormalfaultI. Strike-slipfaultJ. Axis(hingeline)ofaplungingsyncline
27.(2pts)WhatisthefeatureB-B’?F. NormalfaultG. ReversefaultH. ThrustfaultI. Strike-slipfault(eithertype)J. Subductionzone
28.(2pts)WhendidA-A’form?
F. AfterthealluviumwasdepositedG. BeforethealluviumbutafterthediabaseH. BeforethediabasebutaftertheMonteithgraniteI. BeforetheMonteithgranitebutaftertheWesternFormationJ. Noneoftheseiscorrect
29.(3pts)Whichofthefollowingisthecorrectsequence(oldesttomostrecent;i.e.firsttolast)?
F. CarterRhyolite,Diabase,MonteithGranite,AventFerryQuartzite,Alluvium,WithersSandstone
G. AventFerryQuartzite,MonteithGranite,CarterRhyolite,WithersSandstone,Diabase,Alluvium
H. WithersSandstone,Alluvium,CarterRhyolite,MonteithGranite,AventFerryQuartzite,Diabase
I. AventFerryQuartzite,CarterRhyolite,MonteithGranite,WithersSandstone,Diabase,Alluvium
J. MonteithGranite,WithersSandstone,Diabase,CarterRhyolite,AventFerryQuartzite,Alluvium
V.EASTMESAQUADRANGLE,NEWMEXICO(FIGUREV)30.(2pts)Inthismap,notethe(parallel)relationshipbetweenmostofthegeologicalcontactsandthetopographiccontourlines.(Ignorethepurplelines.)Whatdoesthistellyou?
F. TherocksaremetamorphicG. TherocksaredippingdownstreamtothewestH. TherocksareinhorizontallayersI. TherocksarefoldedgentlyJ. Theyoungestrocksareinthevalleys
31.(3pts)Whatisthecorrectsequenceoftheserockunits,fromtheoldesttotheyoungest?
F. Kds,Js,Jeu,Kdo,JzG. Jeu,Js,Jz,Kds,KdoH. Js,Kds,Jeu,Jz,KdoI. Kdo,Kds,Jeu,Jz,JsJ. Kdo,Kds,Jz,Js,Jeu
VI.APEXQUADRANGLE,NORTHCAROLINA(FIGUREVI) ThesearetwocontouredSchmidtequal-areastereonetplotsforpolestofoliation(A)andpolestobedding(B)intheApexQuadrangle,NorthCarolina.32.(2pts)Whatisthegeneraloraverageattitude/orientationrepresentedinA?
F. Vertical/steeplydippingG. Horizontal/gentlydippingH. StrikingNE-SWanddippingNEI. StrikingNE-SWanddippingSWJ. StrikingNW-SEanddippingSW
33.(2pts)Whatisthegeneraloraverageattitude/orientationrepresentedinB?
F. Vertical/steeplydippingG. Horizontal/gentlydippingH. StrikingNE-SWanddippingNEI. StrikingNE-SWanddippingSWJ. StrikingNW-SEanddippingSW
VII.MINORCANYON(FIGUREVII)34.(2pts)PriortothedepositionoftheLarsontonFormation,whichoftheseunitswastheyoungest(mostrecent)toform?
F. LeetJunctionFm.G. TarburgFm.H. BirklandFm.I. GraniteJ. Dike
35.(2pts)WhichunitismostlikelytocontainpebbleserodedfromtheDike?
F. LarsontonFm.G. FosterCityFm.H. BirklandFm.I. LutgradFm.J. Granite
36.(3pts)WhatisonewaytotellthattheTarburgFormationisolderthantheHamlinvilleFormation?
F. TheMinorCanyonRiverflowsthroughit.G. ThegranitecutsthroughtheHamlinvilleFormation.H. ThedikedoesnotcutthroughtheTarburgFormation.I. TheTarburgFormationistilted;theHamlinvilleFormationishorizontal.J. TreesaregrowingontheHamlinvilleFormationbutnotontheTarburg
Formation.
VIII.OTHERQUESTIONS(nofigures)37.Aspecialtypeofcompassusedbygeologistsisknownasa/an_____________Compass.
F. RietveldtG. McKinleyH. AshburnI. BruntonJ. Suunto
38.Thistypeofcompassisuniqueinpartbecauseit
F. Includesamirrorandaninclinometer.G. DoesnotneedtobecorrectedfortheEarth’smagneticdeclination.H. OnlyworksintheNorthernHemisphere.I. Hasanall-digitaldisplay.J. Comeswithabuilt-inGPSunit.
39.(4pts)Whataretwowaystodistinguishasynclinefromananticlineonageologicalmap?(ThisquestionisTiebreaker#1) Asynclinehastheyoungestbeds/layersinthemiddle(closesttotheaxisorhinge)andtheygetolderasyougoout;ananticlinehastheoldestbeds/layersinthemiddleandtheygetyoungeroutward. Inasyncline,thebedsdiptowardthemiddle;inananticlinethebedsdipawayfromthemiddle.(Theymaysayananticlineisan“upfold”andasynclineisa“downfold.”That’sokay,butnotasgoodasanswersabove.Across-sectiondiagramisreallynogood,becausethequestionisaskingaboutmapview)40.(4pts)Thereisarocksetinplasteratthefrontoftheroom.Useyourinclinometerorcompasstomeasurethedipoftherocksample,orsimplyestimateit.Examinetherocksampleinthebox,butdonotpickitup.Notethenortharrow.Whatisthecorrectstrikeanddipofthebeddinginthisrock?(ThisquestionisTiebreaker#2) BOX#1-Strike:_____N33W______________ Dip:_______67NE____________ BOX#2-Strike:_______N40W____________ Dip:_______70NE____________ BOX#3-Strike:_____N40W______________ Dip:_______70NE____________ BOX#4-Strike:______N45W_____________ Dip:_____70NE______________Acceptanswerswithin+/-fivedegreesforstrikeandfordip.Therearealternativewaysofansweringthisquestion;forexampleusingazimuth.Box#1couldbeansweredwith327,67or327,67NEor147,67NE
