![Thin section of ancient cold-seep carbonate via light microscope](http://static.sciencelearn.org.nz/images/images/000/000/496/full/Ancient-cold-seep-carbonate-section20151103-6612-qmlwxf.jpg?1674164392)
Thin section of ancient cold-seep carbonate viewed with a light microscope. The paler areas are filled with calcium carbonate in the aragonite crystal form, the darker areas are hydrocarbon residues.
Thin section of ancient cold-seep carbonate viewed with a light microscope. The paler areas are filled with calcium carbonate in the aragonite crystal form, the darker areas are hydrocarbon residues.