Calcite cements development in a carbonate nodule from a palustrine deposit.
Photomicrographs of Generation 1 calcite cements developed in a carbonate nodule from a palustrine deposit (ISCH‐251), PPL view. (a) Calcite cements interpreted as syn‐pedogenetic microcodium growing externally off inferred root casts that are partially to fully occluded with organic‐rich microcrystalline calcite (Gen 1A) and associated granular calcite cements (Gen 1B; bottom of the photomicrograph).

Luis Aguirre-Palafox's Research on Fossil Soil Age Determination Featured in Eos

The Department of Earth and Planetary Sciences is excited to highlight the pioneering research of Ph.D. student Luis Erick Aguirre Palafox, in his groundbreaking study on paleosols. By applying uranium-lead dating (U-Pb) techniques, typically used for dating terrestrial successions with volcanic layers rich in zircons, his work reveals that age determination of Earth’s fossil soils is possible, offering insights into our planet’s geological history and climate evolution.

Full article available here.