In Memory of our beloved colleague, Dr. Peter Winterburn. Dear colleagues, friends, applied geochemists and geoscientific community- it is with great sadness that we must inform you of the tragic loss of our friend and colleague Dr. Peter Winterburn, who passed away on June 21 in Chile, where he had recently moved back after many years away. We will sincerely miss our friend and our grief is great. We will always remember his important contribution to the development of our discipline. We offer our deepest condolences to his family and friends.