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<p>The Vikram lander from Chandrayaan‑3 successfully landed in an area situated between the Boguslawsky and Manzinus craters. We assessed the stratigraphic age and mineralogical composition of the landing area utilizing data from: (i) the Moon Mineralogical Mapper (M³) onboard Chandrayaan‑1, (ii) Chandrayaan‑2 Imaging Infra-Red Spectrometer (IIRS), (iii) the Narrow Angle Camera (NAC) of the Lunar Reconnaissance Orbiter (LRO) and (iv) the Digital Elevation Model (DEM) provided by the Lunar Orbiter Laser Altimeter (LOLA). The spectroscopic examination of M³ data highlights characteristic low-Ca clinopyroxene absorption features between approximately 900–1000&#xa0;nm and 2000–2100&#xa0;nm. The spectral data of the lunar regolith shows the presence of OH/H<sub>2</sub>O at absorption feature around 2816&#xa0;nm which suggests the presence of OH/H<sub>₂</sub>O linked to low-Ca pyroxene-rich ejecta. A comparison with the RELAB spectral library indicates similar absorption traits to those found at the Apollo 14 and Apollo 15 landing sites. By employing high-resolution LRO NAC and LOLA DEM data, we carried out crater size–frequency distribution (CSFD) analyses to estimate the relative age of the surface. Absolute Model Ages (AMA), calculated through standard lunar chronology and production functions, suggest that the landing site represents an ancient surface consistent with events from the Nectarian period, approximately 3.6&#xa0;billion years ago.</p>

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Mineralogy and Chronology of Chandrayaan-3 Landing Site Using Orbital Remote Sensing Datasets

  • 期刊论文

  • 发表日期：

    2025年12月4日

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  • Nirmala Jain,
  • Priyom Roy,
  • Mamta Chauhan,
  • Tapas Ranjan Martha,
  • Iswar Chandra Das,
  • K. Sreenivas,
  • Prakash Chauhan

摘要

The Vikram lander from Chandrayaan‑3 successfully landed in an area situated between the Boguslawsky and Manzinus craters. We assessed the stratigraphic age and mineralogical composition of the landing area utilizing data from: (i) the Moon Mineralogical Mapper (M³) onboard Chandrayaan‑1, (ii) Chandrayaan‑2 Imaging Infra-Red Spectrometer (IIRS), (iii) the Narrow Angle Camera (NAC) of the Lunar Reconnaissance Orbiter (LRO) and (iv) the Digital Elevation Model (DEM) provided by the Lunar Orbiter Laser Altimeter (LOLA). The spectroscopic examination of M³ data highlights characteristic low-Ca clinopyroxene absorption features between approximately 900–1000 nm and 2000–2100 nm. The spectral data of the lunar regolith shows the presence of OH/H2O at absorption feature around 2816 nm which suggests the presence of OH/H₂O linked to low-Ca pyroxene-rich ejecta. A comparison with the RELAB spectral library indicates similar absorption traits to those found at the Apollo 14 and Apollo 15 landing sites. By employing high-resolution LRO NAC and LOLA DEM data, we carried out crater size–frequency distribution (CSFD) analyses to estimate the relative age of the surface. Absolute Model Ages (AMA), calculated through standard lunar chronology and production functions, suggest that the landing site represents an ancient surface consistent with events from the Nectarian period, approximately 3.6 billion years ago.