Analyses of D¹³C % Has Revealed Biosignatures In

Question

Analyses of d¹³C % has revealed biosignatures in
A) igneous rock.
B) mantle rock.
C) carbonate rock.
D) sedimentary rock.
E) calcareous sand.

Accepted Answer

Sedimentary rocks often contain organic material and are more likely to preserve biosignatures, such as specific carbon isotope ratios like d¹³C, indicating past biological activity.