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Glacial rocks reveal the geology hidden beneath the East Antarctica Ice Sheet Syracuse University, PhysOrg, March 6, 2023 The open access paper is: Fitzgerald, P.G., Goodge, J.W. Exhumation and tectonic history of inaccessible subglacial interior East Antarctica from thermochronology on glacial erratics. Nat Commun 13, 6217 Yours, Paul H.

The below article is discouraging as far as the possibility of Martian fossils. Early Mars was covered in ice sheets, not flowing rivers, researchers say University of British Columbia, August 3, 2020 Summary: "A large number of the valley networks scarring Mars's surface were carved by water melting beneath glacial ice, not by free-flowing rivers as previously thought, according to new research.' Grau Galofre, A., Jellinek, A.M. & Osinski, G.R,. 2020, Valley formation on early Mars by subglacial and fluvial erosion. Nature Geoscience, 2020 Other recent papers: Shaw, J., Gilbert, R.G., Sharpe, D.R., Lesemann, J.E. and Young, R.R., 2020. The origins of s-forms: Form similarity, process analogy, and links to high-energy, subglacial meltwater flows. Earth-Science Reviews, 200, p.102994. Rodriguez, J.A.P., Dobrea, E.N., Kargel, J.S., Baker, V.R., Crown, D.A., Webster, K.D., Berman, D.C., Wilhelm, M.B. and Buckner, D., 2020. The Oldest Highlands of Mars May Be Massive Dust Fallout Deposits. Scientific reports, 10(1), pp.1-15. Open Access Yours, Paul H.

Scientist May Have Discovered Massive Crater Under Greenland Ice Sheet, Daily Beast, Feb. 2019 https://www.thedailybeast.com/scientist-may-have-discovered-massive-crater-under-greenland-ice-sheet Photos: Craters Hidden Beneath the Greenland Ice Sheet, Live Science, February 12, 2019 https://www.livescience.com/64755-photos-greenland-craters.html The open access paper is: Joseph A. MacGregor, William F. Bottke, Jr., Mark A. Fahnestock, Jeremy P. Harbeck, Kurt H. Kjær, John D. Paden, David E. Stillman, and Michael Studinger, 2019, A Possible Second Large Subglacial Impact Crater in Northwest Greenland First published: 11 February 2019 https://doi.org/10.1029/2018GL078126 https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2018GL078126 The paper states: "Based on the dated radiostratigraphy of the Greenland Ice Sheet, available for pre-2014 radar data only, the ice overlying the structure is at least 79 ka old (Figures 1e–1h; MacGregor et al., 2015)." Yours, Paul H.

Giant canyons discovered in Antarctica By Jonathan Amos, BBC News http://www.bbc.com/news/science-environment-44245893 The open access paper is: Winter, K., Ross, N., Ferraccioli, F., Jordan, T.A., Corr, H.F., Forsberg, R., Matsuoka, K., Olesen, A.V. and Casal, T.G., 2018. Topographic steering of enhanced ice flow at the bottleneck between East and West Antarctica. Geophysical Research Letters. https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/2018GL077504 https://agupubs.onlinelibrary.wiley.com/doi/epdf/10.1029/2018GL077504 Yours, Paul H. "The past is never dead. It's not even past." William Faulkner, Act 1, Scene III, Requiem for a Nun (1951)