BACKGROUND AND OBJECTIVES

This chapter is the site report for the Double Trouble corehole, the thirteenth continuously cored and logged onshore site drilled as part of the NJCPDP (Fig. F1). The NJCPDP began with drilling at Island Beach (March–April 1993), Atlantic City (June–August 1993), and Cape May (March–April 1994) as part of Ocean Drilling Program (ODP) Leg 150X (Miller et al., 1994a, 1994b, 1996a; Miller and Snyder, 1997). These three sites targeted Oligocene–Miocene sequences and tried to unravel icehouse sea level changes tied to continental slope drilling by the JOIDES Resolution during Leg 150 (Miller and Mountain, 1994; Miller et al., 1996b, 1998a). Leg 174AX continued onshore drilling at the following locations with specific objectives:

  1. Bass River, New Jersey (October–November 1996) (Miller et al., 1998b), targeting Upper Cretaceous to Paleocene strata unsampled during Leg 150X.
    2.
  2. Ancora, New Jersey (July–August 1998) (Miller et al., 1999), an updip, less deeply buried Cretaceous–Paleocene section complimentary to the Bass River.
    3.
  3. Ocean View, New Jersey (September–October 1999) (Miller et al., 2001), focusing on middle Eocene–upper Miocene sequences.
    4.
  4. Bethany Beach, Delaware (May–June 2000) (Miller et al., 2003), concentrating on thick Miocene sequences in the depocenter of the Salisbury Embayment.
    5.
  5. Fort Mott, New Jersey (October 2001) (Sugarman et al., 2004), targeting the largely nonmarine Cretaceous Potomac Group and its contained aquifers.
    6.
  6. Millville, New Jersey (May–June 2002) (Sugarman et al., 2005b), targeting upper Cretaceous sequences from southern New Jersey.
    7.
  7. Sea Girt, New Jersey (September–November 2003) (Miller et al., 2006), targeting Upper Cretaceous sequences from northern New Jersey.
    8.
  8. Cape May Zoo, New Jersey (September–October 2004) (Sugarman et al., 2007), targeting middle Miocene through Pleistocene sequences and aquifers.
    9.
  9. Medford, New Jersey (April–May 2007) (Sugarman et al., 2010), located to focus on improved correlations of Lower Cretaceous sequences and aquifers.
    10.

The Double Trouble site was located to focus on middle Eocene sequences and aquifers and to serve as a central tie point for correlation of aquifers between the southern and northern New Jersey coastal plain. In addition, the site was located to core the Paleocene/Eocene (PETM) and Cretaceous/Paleogene boundaries.

NEXT