References

1.     Di Bella, M., Pirajno, F., Sabatino, G., Quartieri, S., Barbieri, R., Cavalazzi, B., Ferretti, A., Danovaro, R., Romeo, T., Andaloro, F., et al. (2021). Rolling Ironstones from Earth and Mars: Terrestrial Hydrothermal Ooids as a Potential Analogue of Martian Spherules. Minerals, 11, 460.

2.     Bowen, B. B., Benison, K. C., Oboh-Ikuenobe, F., & Mormile, M. (2007). Hematite concretions from modern acid saline lake sediments as geochemical and astrobiological tombs. In Seventh International Conference on Mars, Lunar and Planetary Institute Contributions No. 1353, 3175.

3.     Chowns, T. M. (2006). Sequence stratigraphy of the Red Mountain Formation; Setting for the origin of the Birmingham ironstones. Alabama Geological Society, 43rd Annual Field Trip, 1-30.

4.     Chowns, T. M., Ashley, A. W. (2018). The Birmingham ironstones and the ironstone enigma. Alabama Geological Society Guidebook, 55, 11-22.

5.     Dowling, A., Rufledt, C., Brande, S., and Marshall C. (2019) Raman spectroscopy of oolitic hematite: Evidence of biosignatures in iron oxide rich rocks. In GSA Annual Meeting in Phoenix. Arizona, 2019.

6.     International Chronostratigraphic Chart (2023) International Commission on Stratigraphy (ICS).

7.     Scotese, C.R. Atlas of Earth History, 1, Paleogeography; PALEOMAP Project: Arlington, TX, USA, 2001; pp. 1–52.

Relevant work from the University of Kansas:

Dowling, A., Rufledt, C., Brande, S., and Marshall C. (2019) Raman spectroscopy of oolitic hematite: Evidence of biosignatures in iron oxide rich rocks. In GSA Annual Meeting in Phoenix. Arizona, 2019.

Dufresne, W. J., Rufledt, C. J., & Marshall, C. P. (2018). Raman spectroscopy of the eight natural carbonate minerals of calcite structure. Journal of Raman Spectroscopy, 49(12), 1999-

2007.

Marshall, C. P., & Dufresne, W. J. (2022). Resonance Raman and polarized Raman scattering of single‐crystal hematite. Journal of Raman Spectroscopy, 53(5), 947-955.

Marshall, C. P., Dufresne, W. J., & Rufledt, C. J. (2020). Polarized Raman spectra of hematite and assignment of external modes. Journal of Raman Spectroscopy, 51(9), 1522-1529.

Marshall, C. P., & Olcott Marshall, A. (2011). Hematite and carbonaceous materials in geological samples: A cautionary tale. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy. 80, 133-137.

Marshall, C. P., Edwards, H. G., & Jehlicka, J. (2010). Understanding the application of Raman spectroscopy to the detection of traces of life. Astrobiology, 10(2), 229-243.

Marshall, C. P., & Olcott Marshall, A. (2013). Raman hyperspectral imaging of microfossils: potential pitfalls. Astrobiology, 13(10), 920-931.

Olcott Marshall, A., & Marshall, C. P. (2015). Vibrational spectroscopy of fossils. Palaeontology, 58(2), 201-211.