All articles by Wretch Fossil are here: http://www.wretch.cc/blog/lin440315&category_id=0
John P Grotzinger was project scientist for the Mars Science Laboratory (MSL) Curiosity rover mission. He wrote the following article on ooids: “Numerical modeling of ooid size and the problem of Neoproterozoic giant ooids.”
Dr. R.E. Summons is an expert on ooids. He wrote an article entitled “Lipid biomarkers in ooids from different locations and ages: Evidence for a common bacterial flora”. (see http://doi.org/10.1111/gbi.12047)
Dr. R.E. Summons is also on the Science Team of Mars rover Curiosity. He is the fifth author of the following article regarding discovering organic molecules in Yellowknife Bay, Gale Crater, Mars: http://www.hou.usra.edu/meetings/lpsc2016/pdf/2568.pdf