Two-stage development of the lunar farside highlands crustal formation

Keiko Yamamoto; Junichi Haruyama; Shingo Kobayashi; Makiko Ohtake; Takahiro Iwata; Yoshiaki Ishihara; Nobuyuki Hasebe

doi:10.1016/j.pss.2015.11.002

Two-stage development of the lunar farside highlands crustal formation

Keiko Yamamoto^*, Junichi Haruyama, Shingo Kobayashi, Makiko Ohtake, Takahiro Iwata, Yoshiaki Ishihara, Nobuyuki Hasebe

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

The correlation between the spatial patterns of surface Thorium (Th) abundance measured by SELENE GRS data and the crustal thickness from the GRAIL gravity field and LRO LOLA data is investigated in the lunar highland area. Our analysis reveals that there are several areas of local minima for Th abundance exhibiting similar values but different crustal thicknesses. To explain the result, we propose a two-stage scenario for crustal formation. In the first stage, plural thin plateaus form on the surface of the lunar magma ocean (LMO), which corresponds to the observed surface Th distribution. In the second stage, a global crust with dichotomy forms by solidification of the LMO under the plateaus.

Original language	English
Pages (from-to)	43-47
Number of pages	5
Journal	Planetary and Space Science
Volume	120
DOIs	https://doi.org/10.1016/j.pss.2015.11.002
Publication status	Published - 2016 Jan 1

Keywords

GRAIL
Lunar crustal formation
Lunar crustal thickness
SELENE
Thorium abundance

ASJC Scopus subject areas

Space and Planetary Science
Astronomy and Astrophysics

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10.1016/j.pss.2015.11.002

Cite this

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title = "Two-stage development of the lunar farside highlands crustal formation",

abstract = "The correlation between the spatial patterns of surface Thorium (Th) abundance measured by SELENE GRS data and the crustal thickness from the GRAIL gravity field and LRO LOLA data is investigated in the lunar highland area. Our analysis reveals that there are several areas of local minima for Th abundance exhibiting similar values but different crustal thicknesses. To explain the result, we propose a two-stage scenario for crustal formation. In the first stage, plural thin plateaus form on the surface of the lunar magma ocean (LMO), which corresponds to the observed surface Th distribution. In the second stage, a global crust with dichotomy forms by solidification of the LMO under the plateaus.",

keywords = "GRAIL, Lunar crustal formation, Lunar crustal thickness, SELENE, Thorium abundance",

author = "Keiko Yamamoto and Junichi Haruyama and Shingo Kobayashi and Makiko Ohtake and Takahiro Iwata and Yoshiaki Ishihara and Nobuyuki Hasebe",

year = "2016",

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doi = "10.1016/j.pss.2015.11.002",

language = "English",

volume = "120",

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journal = "Planetary and Space Science",

issn = "0032-0633",

publisher = "Elsevier Limited",

}

TY - JOUR

T1 - Two-stage development of the lunar farside highlands crustal formation

AU - Yamamoto, Keiko

AU - Haruyama, Junichi

AU - Kobayashi, Shingo

AU - Ohtake, Makiko

AU - Iwata, Takahiro

AU - Ishihara, Yoshiaki

AU - Hasebe, Nobuyuki

PY - 2016/1/1

Y1 - 2016/1/1

N2 - The correlation between the spatial patterns of surface Thorium (Th) abundance measured by SELENE GRS data and the crustal thickness from the GRAIL gravity field and LRO LOLA data is investigated in the lunar highland area. Our analysis reveals that there are several areas of local minima for Th abundance exhibiting similar values but different crustal thicknesses. To explain the result, we propose a two-stage scenario for crustal formation. In the first stage, plural thin plateaus form on the surface of the lunar magma ocean (LMO), which corresponds to the observed surface Th distribution. In the second stage, a global crust with dichotomy forms by solidification of the LMO under the plateaus.

AB - The correlation between the spatial patterns of surface Thorium (Th) abundance measured by SELENE GRS data and the crustal thickness from the GRAIL gravity field and LRO LOLA data is investigated in the lunar highland area. Our analysis reveals that there are several areas of local minima for Th abundance exhibiting similar values but different crustal thicknesses. To explain the result, we propose a two-stage scenario for crustal formation. In the first stage, plural thin plateaus form on the surface of the lunar magma ocean (LMO), which corresponds to the observed surface Th distribution. In the second stage, a global crust with dichotomy forms by solidification of the LMO under the plateaus.

KW - GRAIL

KW - Lunar crustal formation

KW - Lunar crustal thickness

KW - SELENE

KW - Thorium abundance

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DO - 10.1016/j.pss.2015.11.002

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SN - 0032-0633

VL - 120

SP - 43

EP - 47

JO - Planetary and Space Science

JF - Planetary and Space Science

ER -

Two-stage development of the lunar farside highlands crustal formation

Abstract

Keywords

ASJC Scopus subject areas

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