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FIELD GEOLOGY IN THE VALLEY OF TAURUS-LITTROW: How And Why The Last Lunar Samples Were Collected Harrison H. Schmitt Lunar Science For Landed Missions Workshop Ames Research Center January 10, 2018

FIELD GEOLOGY IN THE VALLEY OF TAURUS-LITTROW · Tranquilitatis (?) Clasts/Tracks 72255,72275 4.08±0.08 Ga Rb-Sr Procellarum(?) Zircons 72215, 73217 4.333±0.007 Ga Pb-Pb Reported

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Page 1: FIELD GEOLOGY IN THE VALLEY OF TAURUS-LITTROW · Tranquilitatis (?) Clasts/Tracks 72255,72275 4.08±0.08 Ga Rb-Sr Procellarum(?) Zircons 72215, 73217 4.333±0.007 Ga Pb-Pb Reported

FIELD GEOLOGY IN THE VALLEY OF TAURUS-LITTROW:

How And Why The Last Lunar Samples Were Collected

Harrison H. SchmittLunar Science For Landed Missions Workshop

Ames Research CenterJanuary 10, 2018

Page 2: FIELD GEOLOGY IN THE VALLEY OF TAURUS-LITTROW · Tranquilitatis (?) Clasts/Tracks 72255,72275 4.08±0.08 Ga Rb-Sr Procellarum(?) Zircons 72215, 73217 4.333±0.007 Ga Pb-Pb Reported
Page 3: FIELD GEOLOGY IN THE VALLEY OF TAURUS-LITTROW · Tranquilitatis (?) Clasts/Tracks 72255,72275 4.08±0.08 Ga Rb-Sr Procellarum(?) Zircons 72215, 73217 4.333±0.007 Ga Pb-Pb Reported

5.

9.

Page 4: FIELD GEOLOGY IN THE VALLEY OF TAURUS-LITTROW · Tranquilitatis (?) Clasts/Tracks 72255,72275 4.08±0.08 Ga Rb-Sr Procellarum(?) Zircons 72215, 73217 4.333±0.007 Ga Pb-Pb Reported

70001-9,70011-295

Page 5: FIELD GEOLOGY IN THE VALLEY OF TAURUS-LITTROW · Tranquilitatis (?) Clasts/Tracks 72255,72275 4.08±0.08 Ga Rb-Sr Procellarum(?) Zircons 72215, 73217 4.333±0.007 Ga Pb-Pb Reported

Station1Boulder

AgeGa

71040-175

Page 6: FIELD GEOLOGY IN THE VALLEY OF TAURUS-LITTROW · Tranquilitatis (?) Clasts/Tracks 72255,72275 4.08±0.08 Ga Rb-Sr Procellarum(?) Zircons 72215, 73217 4.333±0.007 Ga Pb-Pb Reported

71500

Page 7: FIELD GEOLOGY IN THE VALLEY OF TAURUS-LITTROW · Tranquilitatis (?) Clasts/Tracks 72255,72275 4.08±0.08 Ga Rb-Sr Procellarum(?) Zircons 72215, 73217 4.333±0.007 Ga Pb-Pb Reported

Tranquilitatis (?)Clasts/Tracks72255,722754.08±0.08Ga

Rb-Sr

Procellarum (?)Zircons72215,73217

4.333±0.007GaPb-Pb

ReportedAgesLayeredSouthMassifBreccia - Boulder1,

Station2

Serenetatis ?ImpactMelt722553.887Ga (Ave.3)

40-39Ar

Fecunditatis (?)Micro-GraniteClasts

72255,722154.03±0.03Ga

Rb-Sr

Crisium(?)Whitlockite

722753.98±0.05Ga

Tracks

Crisium(?)GraniteClasts

72215,72255,722753.95±0.03Rb-Sr

72215-75

Page 8: FIELD GEOLOGY IN THE VALLEY OF TAURUS-LITTROW · Tranquilitatis (?) Clasts/Tracks 72255,72275 4.08±0.08 Ga Rb-Sr Procellarum(?) Zircons 72215, 73217 4.333±0.007 Ga Pb-Pb Reported

72315-395

Page 9: FIELD GEOLOGY IN THE VALLEY OF TAURUS-LITTROW · Tranquilitatis (?) Clasts/Tracks 72255,72275 4.08±0.08 Ga Rb-Sr Procellarum(?) Zircons 72215, 73217 4.333±0.007 Ga Pb-Pb Reported

10 CM

72415

72435

72440,460

Page 10: FIELD GEOLOGY IN THE VALLEY OF TAURUS-LITTROW · Tranquilitatis (?) Clasts/Tracks 72255,72275 4.08±0.08 Ga Rb-Sr Procellarum(?) Zircons 72215, 73217 4.333±0.007 Ga Pb-Pb Reported

73130-134

Page 11: FIELD GEOLOGY IN THE VALLEY OF TAURUS-LITTROW · Tranquilitatis (?) Clasts/Tracks 72255,72275 4.08±0.08 Ga Rb-Sr Procellarum(?) Zircons 72215, 73217 4.333±0.007 Ga Pb-Pb Reported

73220-80

Page 12: FIELD GEOLOGY IN THE VALLEY OF TAURUS-LITTROW · Tranquilitatis (?) Clasts/Tracks 72255,72275 4.08±0.08 Ga Rb-Sr Procellarum(?) Zircons 72215, 73217 4.333±0.007 Ga Pb-Pb Reported

73001/2

Page 13: FIELD GEOLOGY IN THE VALLEY OF TAURUS-LITTROW · Tranquilitatis (?) Clasts/Tracks 72255,72275 4.08±0.08 Ga Rb-Sr Procellarum(?) Zircons 72215, 73217 4.333±0.007 Ga Pb-Pb Reported

74220-60

74001/2

Page 14: FIELD GEOLOGY IN THE VALLEY OF TAURUS-LITTROW · Tranquilitatis (?) Clasts/Tracks 72255,72275 4.08±0.08 Ga Rb-Sr Procellarum(?) Zircons 72215, 73217 4.333±0.007 Ga Pb-Pb Reported

PlanarTopRearofboulder

shadow75075

75055ACB

Page 15: FIELD GEOLOGY IN THE VALLEY OF TAURUS-LITTROW · Tranquilitatis (?) Clasts/Tracks 72255,72275 4.08±0.08 Ga Rb-Sr Procellarum(?) Zircons 72215, 73217 4.333±0.007 Ga Pb-Pb Reported

PlanarTopRearofboulder

x

x75075

75055AB

C

Page 16: FIELD GEOLOGY IN THE VALLEY OF TAURUS-LITTROW · Tranquilitatis (?) Clasts/Tracks 72255,72275 4.08±0.08 Ga Rb-Sr Procellarum(?) Zircons 72215, 73217 4.333±0.007 Ga Pb-Pb Reported

75055

Page 17: FIELD GEOLOGY IN THE VALLEY OF TAURUS-LITTROW · Tranquilitatis (?) Clasts/Tracks 72255,72275 4.08±0.08 Ga Rb-Sr Procellarum(?) Zircons 72215, 73217 4.333±0.007 Ga Pb-Pb Reported

Crisium(?)Blue-GrayMelt-Breccia

762953.93±0.04Ga

40Ar/39Ar

Crisium(?)Intrusive/Extrusive

Tan-GrayMelt-Breccia76215

3.91±0.04Ga40Ar/39Ar

50cm

VesicularContact

MetamorphicZone

BoulderatStation6

Page 18: FIELD GEOLOGY IN THE VALLEY OF TAURUS-LITTROW · Tranquilitatis (?) Clasts/Tracks 72255,72275 4.08±0.08 Ga Rb-Sr Procellarum(?) Zircons 72215, 73217 4.333±0.007 Ga Pb-Pb Reported

MetamorphosedBlue-GrayMelt-Breccia

771153.84±0.02Ga

40Ar/39ArSernitatis(?)Light-GrayMelt-Breccia

771353.83±0.04Ga

40Ar/39Ar

20cm

NoriteClast4.42±0.1Ga

Pb-Pb

BoulderatStation7

ContactMetamorphicZone

Page 19: FIELD GEOLOGY IN THE VALLEY OF TAURUS-LITTROW · Tranquilitatis (?) Clasts/Tracks 72255,72275 4.08±0.08 Ga Rb-Sr Procellarum(?) Zircons 72215, 73217 4.333±0.007 Ga Pb-Pb Reported

76500

Page 20: FIELD GEOLOGY IN THE VALLEY OF TAURUS-LITTROW · Tranquilitatis (?) Clasts/Tracks 72255,72275 4.08±0.08 Ga Rb-Sr Procellarum(?) Zircons 72215, 73217 4.333±0.007 Ga Pb-Pb Reported

78235-8

Page 21: FIELD GEOLOGY IN THE VALLEY OF TAURUS-LITTROW · Tranquilitatis (?) Clasts/Tracks 72255,72275 4.08±0.08 Ga Rb-Sr Procellarum(?) Zircons 72215, 73217 4.333±0.007 Ga Pb-Pb Reported

78420-80

Page 22: FIELD GEOLOGY IN THE VALLEY OF TAURUS-LITTROW · Tranquilitatis (?) Clasts/Tracks 72255,72275 4.08±0.08 Ga Rb-Sr Procellarum(?) Zircons 72215, 73217 4.333±0.007 Ga Pb-Pb Reported

79115-195

Page 23: FIELD GEOLOGY IN THE VALLEY OF TAURUS-LITTROW · Tranquilitatis (?) Clasts/Tracks 72255,72275 4.08±0.08 Ga Rb-Sr Procellarum(?) Zircons 72215, 73217 4.333±0.007 Ga Pb-Pb Reported

79001/2

79215

Page 24: FIELD GEOLOGY IN THE VALLEY OF TAURUS-LITTROW · Tranquilitatis (?) Clasts/Tracks 72255,72275 4.08±0.08 Ga Rb-Sr Procellarum(?) Zircons 72215, 73217 4.333±0.007 Ga Pb-Pb Reported

Orientationof70019

Page 25: FIELD GEOLOGY IN THE VALLEY OF TAURUS-LITTROW · Tranquilitatis (?) Clasts/Tracks 72255,72275 4.08±0.08 Ga Rb-Sr Procellarum(?) Zircons 72215, 73217 4.333±0.007 Ga Pb-Pb Reported

70215

Page 26: FIELD GEOLOGY IN THE VALLEY OF TAURUS-LITTROW · Tranquilitatis (?) Clasts/Tracks 72255,72275 4.08±0.08 Ga Rb-Sr Procellarum(?) Zircons 72215, 73217 4.333±0.007 Ga Pb-Pb Reported
Page 27: FIELD GEOLOGY IN THE VALLEY OF TAURUS-LITTROW · Tranquilitatis (?) Clasts/Tracks 72255,72275 4.08±0.08 Ga Rb-Sr Procellarum(?) Zircons 72215, 73217 4.333±0.007 Ga Pb-Pb Reported

76535BSEImagesfromElardoetal.2012

OPXCPX

Relictgrainboundarymaybepre-garnet,olivine-plag boundary

Cr-SPLCPXOPX