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Curiosity Maps Martian ‘Boxwork’ Ridges, Spots Spheroidal Nodules and Confirms Clay–Carbonate Split

The results point to long‑lived groundwater high on Mount Sharp.

Overview

  • After a months‑long close study, new images reveal hundreds of small nodules clustered along ridge walls and in sandy hollows.
  • Rover drill samples show clay minerals in ridge material and carbonate minerals in hollows, clarifying how the formations developed.
  • A recent sample was processed with wet‑chemistry reagents to enhance the search for organic molecules, without evidence of biology.
  • Mission scientists say the web‑like ridges and nodules are mineral features, as the exact reasons for their distribution remain under investigation.
  • Curiosity is slated to leave the boxwork terrain in March and proceed into sulfate‑bearing layers that record Mars’ later drying history.