exploring lacus veris , orientale · 2019-02-05 · exploring lacus veris , orientale to probe the...

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.

LacusVeris Site

Kaguya Terrain Camera Slope Map.

• Accesstosamplesfrom

• OuterRookMountains

• Excavatedlunarcrust

• MaunderFormation

• PrimaryOrientaleejecta

• LacusVeris MareBasaltPond

• SinuousRille