Is the Bacons Castle formation Chesapeake Bay crater ejecta?
Figure 7 gives no clue, except possibly for the seaward rising scarp seen in Figure 7D, which is unexpected for a coastal-plain terrace but is consistent with its being a vestige of an originally (vastly) higher crater rim. But that is pure speculation. On the other hand, the following information gleaned from Goodwin and Johnson (1970) is solid fact: “One strong contrast noted by Wentworth (1928) between the Brandywine gravels [i.e., the Eastern Virginia upland deposits] and lower, younger gravels [i.e., the Bacons Castle formation] was the absence of striated boulders and cobbles in the higher level gravels and the presence of such striated boulders and cobbles in the lower gravels.” Apropos of that, I note that relatively rare striated rocks have been found in outcrops of Chicxulub-crater ejecta slightly inside of 5 crater radii (Ocampo et al., 1996; Pope et al., 1999; King and Petruny, 2003), although nothing is known of their radial distribution since no outcrops closer to the Chi
