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SEM images and corresponding Raman spectra of solid inclusions in gypsum. Purple arrows indicate clay minerals, and orange arrows indicate organic matter. (A) SEM image of a gypsum solid inclusion showing platy clay minerals and associated organic matter. The area outlined in white is enlarged in (B). (B) Higher magnification image showing the close spatial association between clay minerals and adsorbed organic matter. (C) Raman spectrum acquired from the area in (B), with D-band and G-band indicating kerogen. (D) SEM image of another gypsum solid inclusion, showing platy clay minerals and organic matter. The white box marks the area enlarged in (E). (E) Clay minerals with suspected spherical organic aggregates adsorbed on their surfaces. (F) The Raman spectrum from the area in (E), showing D-band and G-band of kerogen. Peaks corresponding to C=C, C–C, and –CH₃ indicate the presence of β-carotene; the –CH₃ peak overlaps with a gypsum peak near ~1000 cm⁻¹. -- Communications Earth & Environment

A Dual-mineral Protection Mechanism For Organic Matter Preservation And Its Implications For Mars Habitability And Biosignature Detection

by Keith CowingSeptember 10, 2026September 10, 2026

[Communications Earth & Environment] Understanding organic matter preservation in extreme environments is crucial for detecting potential biosignatures on Mars.

evaporites

A Dual-mineral Protection Mechanism For Organic Matter Preservation And Its Implications For Mars Habitability And Biosignature Detection

Landforms In Ares Vallis Carved Out By Ancient Water Flow

Evolution of Stellar Activity and Habitable Zone (EATEN): III. X-ray Activity of Dwarfs in Open Clusters and Field Stars

Radial Velocity Detection Of The TRAPPIST-1 Planetary System With SPIRou And NIRPS

The Long-term Persistence Of Microbial Biospheres Introduces A Temporal Bias 1 Into The Drake Equation: Implications For The Search For Extraterrestrial Life

A Dual-mineral Protection Mechanism For Organic Matter Preservation And Its Implications For Mars Habitability And Biosignature Detection