exploring lacus veris , orientale · 2019-02-05 · exploring lacus veris , orientale to probe the...
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ExploringLacusVeris,Orientale
toProbetheVolcanicandImpactHistoriesoftheMoon
DebraH.Needham
and
JenniferL.Whitten,CalebI.Fassett,andJamesW.Head
LunarScienceforLandedMissionsWorkshop
January11,2018
GeologyofOrientale• Youngestoflargelunarbasins.
• Formed~3.68Ga.(Whittenetal.,2011)
• Endofthebasin-formingepoch.
• Locatedonthetransitionoffromthintothicklunarcrust.
GeologyofOrientale• Orientalehas
• Threeconcentricrings(multi-ring
basin)
Cordillera Ring
Outer Rook Ring
Inner Rook Ring
LROC WAC image, WAC GLD DEM;
Cordillera Ring
Outer Rook Ring
Inner Rook Ring
GeologyofOrientale• Orientalehas
• Threeconcentricrings(multi-ring
basin)
• 23marepondsinadditiontothe
centralMareOrientale.
• LacusVeris,thelargestpond,isnestedbetween:
• OuterRookRing
• Excavatedlunarcrust
• MaunderFormation
• PrimaryOrientaleejecta
Moon Mineralogy Mapper color composite, highlighting mafic mineral absorptions (R 1.0 µm; G 2.0 µm; B, 1489 nm), from Whitten et al., 2011.
GeologyofOrientale• Orientalehas
• Threeconcentricrings(multi-ring
basin)
• 23marepondsinadditiontothe
centralMareOrientale.
• LacusVeris,thelargestpond,isnestedbetween:
• OuterRookRing
• Excavatedlunarcrust
• MaunderFormation
• PrimaryOrientaleejecta
Lacus Veris
Mare pond ages within Orientale, from Whitten et al., 2011.
Western Orientale: Later this session (Whitten et al.,) between the Inner and Outer Rook Mountains
Eastern Orientale: This Studyalong the Outer Rook Mountains
Selected because of proximity to a variety of geologic units within Orientale, including the mare, the melt sheet (Maunder Formation), and the basin ring materials.
Proposed Landing Sites
LROC WAC
LacusVeris Site
Kaguya Terrain Camera TC_EVE_02_S12E273S15E276SC.
Outer Rook Mountains
Maunder Formation
Lacus Veris
• Accesstosamplesfrom
• OuterRookMountains
• Excavatedlunarcrust
• MaunderFormation
• PrimaryOrientaleejecta
• LacusVerisMareBasaltPond
• SinuousRille
ScienceObjectivesandTraverseatLacusVeris• ScienceObjectives:1. Determinecompositionandageof
volcanicactivity,investigate
sinuousrille formation.
a) AddressesGoals5,7ofNRC,2007.
2. Determinecompositionandageof
MaunderFormationimpactmelt.
a) AddressesGoals1,3,6,7.
3. Determinecompositionanddepth
oforiginofOuterRookMountains.
a) AddressesGoals1,3,6.
Kaguya Terrain Camera DTM.
ScienceObjectivesandTraverseatLacusVeris• Traverse:~20km
• Station1:Samplemarebasalts(SO1)
• Station2:Investigatecontactbetween
marebasaltandMF(SO1,SO2)
• Station3:SampleMFimpactmelt(SO2)
• Station4:Investigatesinuousrille (SO1)
• Station5:SampleORRbouldersthat
slumpedfromoutcropsabove(SO3)
• Station6:Investigatecontactbetween
ORRandMF(SO2,SO3)
Kaguya Terrain Camera DTM.
Landing SiteS1
S2
S3
S4
S5
S6
ScienceObjectivesandTraverseatLacusVeris• Traverse:~20km
• Station1:Samplemarebasalts(SO1)
• Station2:Investigatecontactbetween
marebasaltandMF(SO1,SO2)
• Station3:SampleMFimpactmelt(SO2)
• Station4:Investigatesinuousrille (SO1)
• Station5:SampleORRbouldersthat
slumpedfromoutcropsabove(SO3)
• Station6:Investigatecontactbetween
ORRandMF(SO2,SO3)
Landing SiteS1
S2
S3
S4
S5
S6
Moon Mineralogy Mapper color composite.
ScienceObjectivesandTraverseatLacusVeris• Traverse:~20km
• Station1:Samplemarebasalts(SO1)
• Station2:Investigatecontactbetween
marebasaltandMF(SO1,SO2)
• Station3:SampleMFimpactmelt(SO2)
• Station4:Investigatesinuousrille (SO1)
• Station5:SampleORRbouldersthat
slumpedfromoutcropsabove(SO3)
• Station6:Investigatecontactbetween
ORRandMF(SO2,SO3)
Landing SiteS1
S2
S3
S4
S5
S6
Kaguya Terrain Camera Slope Map.
ScienceObjectivesandTraverseatLacusVeris• Traverse:~20km
• Station1:Samplemarebasalts(SO1)
• Station2:Investigatecontactbetween
marebasaltandMF(SO1,SO2)
• Station3:SampleMFimpactmelt(SO2)
• Station4:Investigatesinuousrille (SO1)
• Station5:SampleORRbouldersthat
slumpedfromoutcropsabove(SO3)
• Station6:Investigatecontactbetween
ORRandMF(SO2,SO3)
Kaguya Terrain Camera DTM.
Landing SiteS1
S2
S3
S4
S5
S6
Station1:Samplemarebasalts(SO1)
LROC image M1160675618LE.
ScienceObjectivesandTraverseatLacusVeris• Traverse:~20km
• Station1:Samplemarebasalts(SO1)
• Station2:Investigatecontactbetween
marebasaltandMF(SO1,SO2)
• Station3:SampleMFimpactmelt(SO2)
• Station4:Investigatesinuousrille (SO1)
• Station5:SampleORRbouldersthat
slumpedfromoutcropsabove(SO3)
• Station6:Investigatecontactbetween
ORRandMF(SO2,SO3)
Kaguya Terrain Camera DTM.
Landing SiteS1
S2
S3
S4
S5
S6
Station2:InvestigatecontactbetweenmarebasaltandMF(SO1,SO2)
LROC image M1160675618LE.
ScienceObjectivesandTraverseatLacusVeris• Traverse:~20km
• Station1:Samplemarebasalts(SO1)
• Station2:Investigatecontactbetween
marebasaltandMF(SO1,SO2)
• Station3:SampleMFimpactmelt(SO2)
• Station4:Investigatesinuousrille (SO1)
• Station5:SampleORRbouldersthat
slumpedfromoutcropsabove(SO3)
• Station6:Investigatecontactbetween
ORRandMF(SO2,SO3)
Kaguya Terrain Camera DTM.
Landing SiteS1
S2
S3
S4
S5
S6
Station3:SampleMFimpactmelt(SO2)
LROC image M1160675618LE.
ScienceObjectivesandTraverseatLacusVeris• Traverse:~20km
• Station1:Samplemarebasalts(SO1)
• Station2:Investigatecontactbetween
marebasaltandMF(SO1,SO2)
• Station3:SampleMFimpactmelt(SO2)
• Station4:Investigatesinuousrille (SO1)
• Station5:SampleORRbouldersthat
slumpedfromoutcropsabove(SO3)
• Station6:Investigatecontactbetween
ORRandMF(SO2,SO3)
Kaguya Terrain Camera DTM.
Landing SiteS1
S2
S3
S4
S5
S6
Station4:Investigatesinuousrille (SO1)
LROC image M1160675618LE.
ScienceObjectivesandTraverseatLacusVeris• Traverse:~20km
• Station1:Samplemarebasalts(SO1)
• Station2:Investigatecontactbetween
marebasaltandMF(SO1,SO2)
• Station3:SampleMFimpactmelt(SO2)
• Station4:Investigatesinuousrille (SO1)
• Station5:SampleORRbouldersthat
slumpedfromoutcropsabove(SO3)
• Station6:Investigatecontactbetween
ORRandMF(SO2,SO3)
Kaguya Terrain Camera DTM.
Landing SiteS1
S2
S3
S4
S5
S6Station5:SampleORRbouldersthat
slumpedfromoutcropsabove(SO3)
LROC image M1160675618LE.
MeasurementsandInstrumentsNeededtoAddressObjectives
• ScienceObjectives:1. Determinecompositionandageofvolcanicactivity.
- Measurebulk,traceelementcompositionsofbasalt.
- MeasurerelativeabundancesofK/Ar,Rb/Sr,orU/Pb isotopes.
• Requiresstereocameraandmicro-imagerfornavigationandcontextimages.
• Requiresmini-XRF/XRDormini-SEM.
• RequiresKArLE,withLIBS(Cohenetal.,2014),orequivalent.
• ScienceObjectives:2. DeterminecompositionandageofMaunderFormationimpactmelt.
- Measurebulk,traceelementcompositionsofanorthosite-bearingimpactmelt.
- Characterizeshockfeaturespresentinimpactmelttoconstrainimpacteffects.
- MeasurerelativeabundancesofK/Ar,Rb/Sr,orU/Pb isotopes.
• Requiresstereocameraandmicro-imagerfornavigation,contextimages,andto
searchforshockfeaturesinanorthosite.
• Requiresmini-XRF/XRDormini-SEM.
• RequiresKArLE,withLIBS(Cohenetal.,2014),orequivalentforothergeochronometers.
MeasurementsandInstrumentsNeededtoAddressObjectives
• ScienceObjectives:3. DeterminecompositionanddepthoforiginofOuterRookMountains.
- Measurebulk,traceelementcompositionsofanorthositic rocks,particularlyabundanceofAn.
- DeterminemineralsuitepresentinORRtodeterminedepthoforigin.
- Characterizeshockfeaturespresentinanorthosite toconstrainimpacteffects.
• Requiresstereocameraandmicro-imagerfornavigation,contextimages,andto
searchforshockfeaturesinanorthosite.
• Requiresmini-XRF/XRDormini-SEM.
MeasurementsandInstrumentsNeededtoAddressObjectives
SummaryScienceObjective NRC,2007 Measurements Instruments1.Determinecomposition
andageofvolcanicactivity,
investigatesinuous rille
formation
Goal5 (volcanichistory)
Goal7(regolith formation)
- Bulk,traceelement
compositions ofbasalt.
- RelativeabundancesofK/Ar or
other.
- Mini-XRF/XRD ormini-
SEM.
- KArLE, withLIBS,or
equivalent.
2.Determinecomposition
andageofMaunder
Formation impactmelt.
Goal1(bombardment
history)
Goal3(diversityofcrustal
rocks)
Goal6(impactprocesses)
Goal7
- Bulk,traceelement
compositions ofbasalt.
- RelativeabundancesofK/Ar or
other.
- Shockfeaturesinimpactmelt.
- Mini-XRF/XRD ormini-
SEM.
- KArLE, withLIBS,or
equivalent.
- Micro-imager
3.Determinecomposition
anddepthoforigin ofOuter
RookMountains
Goal1
Goal3
Goal 6
- Bulk,traceelement
compositions ofbasalt.
- Mineralsuite.
- Shockfeaturesinimpactmelt.
- Mini-XRF/XRD ormini-
SEM.
- Micro-imager
• Additionally,aUVVISspectrometertoassistinidentifyingsamplesforanalysis.
• Willalsoneedaroboticarmtoretrievesamplesanddelivertoinstrumentdeck,
andarockabrasiontooltoremoveregolithfromsamplesites.
LacusVeris Site
• Accesstosamplesfrom
• OuterRookMountains
• Excavatedlunarcrust
• MaunderFormation
• PrimaryOrientaleejecta
• LacusVeris MareBasaltPond
• SinuousRille
Kaguya Terrain Camera DTM.
LacusVeris Site
• Accesstosamplesfrom
• OuterRookMountains
• Excavatedlunarcrust
• MaunderFormation
• PrimaryOrientaleejecta
• LacusVeris MareBasaltPond
• SinuousRille
Moon Mineralogy Mapper color composite. Basalt is orange-yellow, fresh anorthosite is purple.