The early Neogene continental rise off the eastern United States

A revised Early Miocene age for the instigation of the Eirik Drift, offshore southern Greenland: Evidence from high-resolution seismic reflection data

“…The high reflection band with its swarm-like faults observed in our data (Figs. 8-9) is similar to the widespread occurrence of a hummocky reflection zone above a relatively reflector-free or low-amplitude section at the US Atlantic continental rise (Mountain and Tucholke, 1985;McMaster et al, 1989;Locker and Laine, 1992). These reflection characteristics were identified below reflector Merlin by Mountain and Tucholke (1985), inferred to represent the initialized stabilization of drift deposits in the western North Atlantic~10-12 Ma ago.…”

“…These reflection characteristics were identified below reflector Merlin by Mountain and Tucholke (1985), inferred to represent the initialized stabilization of drift deposits in the western North Atlantic~10-12 Ma ago. Horizon G of McMaster et al (1989) is concordant with reflector Merlin. Geological drilling results in combination with seismic data revealed, that an interval of deep-current erosion at 11.5-12 Ma caused horizon G (Muza and Covington, 1987;McMaster et al, 1989).…”

“…Horizon G of McMaster et al (1989) is concordant with reflector Merlin. Geological drilling results in combination with seismic data revealed, that an interval of deep-current erosion at 11.5-12 Ma caused horizon G (Muza and Covington, 1987;McMaster et al, 1989). Locker and Laine (1992) linked their horizon X (10.5 Ma) with reflector Merlin.…”

Global sea-level change and the New Jersey margin

“…Although Sites 105, 106, 388, and 603 cored thick Miocene sections, all were on the lower rise in water depths too deep for detailed biostratigraphic control. Thus, previous seismic stratigraphic studies of the margin have been hampered by a lack of age and lithologic data (e.g., Tucholke and Mountain, 1979;Poag, 1985;Mountain and Tucholke, 1985;Poag and Mountain, 1987;McMaster et al, 1989;Poag and Sevon, 1989). Our site on the rise (Site 905) is at the same location as Site NJ-6 from DSDP Leg 95 and is designed to monitor the response of sedimentation on the rise to changes in sea-level and deep-water circulation.…”

Geological interpretation of a low-backscatter anomaly found on the New Jersey continental margin

“…Its evolution is described in detail by numerous authors (Rona, 1969;Hollister and Heezen, 1972;Embley, 1980;Bulfinch et al, 1982;Mountain and Tucholke, 1985;Poag, 1985;McCave and Tucholke, 1986;Mountain, 1987;McMaster et al, 1989;Pratson and Laine, 1989;Poag, 1992;Mountain et al, 1994;McHugh et al, 2002;Chaytor et al, 2007;Twitchell et al, 2009). The Quaternary margin sequences are strongly influenced by glacial deposits in the northern Atlantic margin and hemipelagic sediment (Poag, 1992).…”