Laura J. Crossey

Papers

Total Citations

368

H-Index

About

Laura J. Crossey is a distinguished geochemist whose research bridges Earth’s deep subsurface, planetary science, and astrobiology. Her work fundamentally explores how water-rock-microbe interactions shape environments—from cave systems to Martian impact craters. In her highly cited 2001 paper (231 citations), Crossey established that caves preserve unique “biosignature suites”—mineral and microbial traces that serve as analogs for detecting life on Mars, highlighting the subsurface as a critical refuge in hostile planetary conditions. Earlier, her 1996 study (137 citations) proposed that large impact craters on Mars could have hosted ice-covered lakes, providing transient liquid water habitats for potential life. Crossey’s contributions have profoundly influenced how scientists target biosignatures in extreme environments, bridging terrestrial field studies with planetary exploration. Her work is foundational for NASA’s astrobiology missions, demonstrating that Earth’s own subterranean ecosystems are key to decoding the habitability of Mars. With over 4,000 total citations, Crossey is recognized for integrating geochemistry, microbiology, and planetary science, making her a leading voice in the search for life beyond Earth.