Figure F9. Cretaceous/Tertiary (K/T) boundary at Bass River, New Jersey, showing core photograph and lithology of spherule bed, Ir and shocked mineral concentration, and biostratigraphic data (planktonic foraminifers, dinocysts, and nannofossils). Clay clasts are interpreted as being emplaced by a tsunami (modified after Olsson et al., 1997, 2002).