Ocean View Site

Miller, Kenneth G.; Sugarman, Peter J.; Browning, James V.; Pekar, Stephen F.; Katz, Miriam; Cramer, Benjamin; Monteverde, Donald H.; Uptegrove, Jane; McLaughlin, Peter P.; Aubry, S J; M.-P., Olsson; Sickel, R K Van; Metzger, Bernhard; Feigenson, K; Tiffin,; McCarthy, Siobhán

doi:10.2973/odp.proc.ir.174axs.102.1990

Cited by 7 publications

(9 citation statements)

References 20 publications

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“…Several coreholes drilled over the past decade in the New Jersey coastal plain penetrate Lower and Middle Miocene strata, locally called the Kirkwood Formation. These include coreholes at Ancora (Miller et al, 1999), Bass River (Miller et al, 1998b), and Island Beach (Miller et al, 1994a), where only a few of the Kirkwood sequences were sampled and dated (Kw1a and Kw1b and possibly Kw2a or b) and coreholes at Ocean View (Miller et al, 2001), Millville (Sugarman et al, 2005), Cape May (Miller et al, 1996b), and Atlantic City (Miller et al, 1994b) that sampled multiple Kirkwood sequences. Early and Middle Miocene R2 curves for these sites, in addition to the new Cape May Zoo site (Sugarman et al, 2007), show that several Kirkwood sequences are well represented (Fig.…”

Section: Combined Results Coastal Plain Coreholesmentioning

confidence: 99%

Miocene relative sea level on the New Jersey shallow continental shelf and coastal plain derived from one-dimensional backstripping: A case for both eustasy and epeirogeny

et al. 2016

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Onshore drilling by Ocean Drilling Program (ODP) Legs 150X and 174AX and offshore drilling by Integrated Ocean Drilling Program (IODP) Expedition 313 provides continuous cores and logs of seismically imaged Lower to Middle Miocene sequences. We input ages and paleodepths of these sequences into one-dimensional backstripping equations, progressively accounting for the effects of compaction, Airy loading, and thermal subsidence. The resulting difference between observed subsidence and theoretical thermal subsidence provide relative sea-level curves that reflect both global average sea level and non-thermal subsidence. In contrast with expectations, backstripping suggests that the relative sea-level maxima in proximal onshore sites were lower than correlative maxima on the shelf. This requires that the onshore New Jersey coastal plain has subsided relative to the shelf, which is consistent with models of relative epeirogeny due to subduction of the Farallon plate. These models predict subsidence of the coastal plain relative to the shelf. Although onshore and offshore sea-level estimates are offset by epeirogeny, the amplitude of million-year-scale Early to Middle Miocene sea-level changes seen at the New Jersey margin is generally 5-20 m and occasionally as great as 50 m. These events are interpreted to represent eustatic variations, because they occur on a shorter time frame than epeirogenic influences. Correction for epeirogenic effects largely reconciles differences between onshore and offshore relative sea-level estimates and suggests that backstripping provides a testable eustatic model for the Early to Middle Miocene.

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Section: Combined Results Coastal Plain Coreholesmentioning

confidence: 99%

Miocene relative sea level on the New Jersey shallow continental shelf and coastal plain derived from one-dimensional backstripping: A case for both eustasy and epeirogeny

et al. 2016

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“…Miller et al (1998) characterized Miocene sequences, based on cores collected on the early Miocene palaeoshelf (now beneath the modern coastal plain) as beginning with a thin Transgressive Systems Tract (TST). Results from ODP onshore core locations (Miller et al , 1994a, b, 1997, 2001) (Fig. 1) show that lower Miocene TST's average 6 m in thickness, approximately equal to CH0698 seismic resolution.…”

Section: Seismic Sequencesmentioning

confidence: 98%

“…de Verteuil (1997) used palynological data to outline seven sequences at the ODP Leg 150X Atlantic City corehole. ODP Leg 174AX coreholes at Ocean View and Cape May Zoo (Miller et al , 2001; Sugarman et al , 2007) supplied sufficient information to redefine the six sequences into 10.…”

Section: Sequence Chronologymentioning

confidence: 99%

Early Miocene sequence development across the New Jersey margin

2008

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Sequence stratigraphy provides an understanding of the interplay between eustasy, sediment supply and accommodation in the sedimentary construction of passive margins. We used this approach to follow the early to middle Miocene growth of the New Jersey margin and analyse the connection between relative changes of sea level and variable sediment supply. Eleven candidate sequence boundaries were traced in high‐resolution multi‐channel seismic profiles across the inner margin and matched to geophysical log signatures and lithologic changes in ODP Leg 150X onshore coreholes. Chronologies at these drill sites were then used to assign ages to the intervening seismic sequences. We conclude that the regional and global correlation of early Miocene sequences suggests a dominant role of global sea‐level change but margin progradation was controlled by localized sediment contribution and that local conditions played a large role in sequence formation and preservation. Lowstand deposits were regionally restricted and their locations point to both single and multiple sediment sources. The distribution of highstand deposits, by contrast, documents redistribution by along shelf currents. We find no evidence that sea level fell below the elevation of the clinoform rollover, and the existence of extensive lowstand deposits seaward of this inflection point indicates efficient cross‐shelf sediment transport mechanisms despite the apparent lack of well‐developed fluvial drainage.

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“…In spite of widespread evidence for extreme global warmth during the Cenomanian-Turonian, some authors have argued for the episodic existence of continental ice based on presumed isochrony of sequence stratigraphic boundaries and correlation with oxygen isotope shifts (Gale et al, 2002;Miller et al, 2003Miller et al, , 2005Stoll and Schrag, 2000;Bornemann et al, 2008). The proposed ice sheet events during the Cretaceous hot greenhouse have been countered by more recent studies that showed oxygen isotopic records are inconsistent with waxing and waning of continental ice sheets at these times (Ando et al, 2009;MacLeod et al, 2013;Moriya et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

The rise and fall of the Cretaceous Hot Greenhouse climate

Huber

MacLeod

Watkins

et al. 2018

Global and Planetary Change

236

149

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A B S T R A C TA compilation of foraminiferal stable isotope measurements from southern high latitude (SHL) deep-sea sites provides a novel perspective important for understanding Earth's paleotemperature and paleoceanographic changes across the rise and fall of the Cretaceous Hot Greenhouse climate and the subsequent Paleogene climatic optimum. Both new and previously published results are placed within an improved chronostratigraphic framework for southern South Atlantic and southern Indian Ocean sites. Sites studied were located between 58°and 65°S paleolatitude and were deposited at middle to upper bathyal paleodepths. Oxygen isotope records suggest similar trends in both bottom and surface water temperatures in the southern sectors of the South Atlantic and in the Indian Ocean basins. Warm conditions were present throughout the Albian, extreme warmth existed during the Cretaceous Thermal Maximum (early-mid-Turonian) through late Santonian, and long-term cooling began in the Campanian and culminated in Cretaceous temperature minima during the Maastrichtian. Gradients between surface and seafloor δ 18 O and δ 13 C values were unusually high throughout the 11.5 m.y. of extreme warmth during the Turonian-early Campanian, but these vertical gradients nearly disappeared by the early Maastrichtian.In absolute terms, paleotemperature estimates that use standard assumptions for pre-glacial seawater suggest sub-Antarctic bottom waters were ≥21°C and sub-Antarctic surface waters were ≥27°C during the Turonian, values warmer than published climate models support. Alternatively, estimated temperatures can be reduced to the upper limits of model results through freshening of high latitude waters but only if there were enhanced precipitation of water with quite low δ 18 O values. Regardless, Turonian planktonic δ 18 O values are~1.5‰ lower than minimum values reported for the Paleocene-Eocene Thermal Maximum (PETM) from the same region, a difference which corresponds to Turonian surface temperatures~6°C warmer than peak PETM temperatures if Turonian and Paleocene temperatures are estimated using the same assumptions. It is likely that warm oceans surrounding and penetrating interior Antarctica (given higher relative sea level) prevented growth of Antarctic ice sheets at all but the highest elevations from the late Aptian through late Campanian; however, Maastrichtian temperatures may have been cool enough to allow growth of small, ephemeral ice sheets. The standard explanation for the sustained warmth during Cretaceous Hot Greenhouse climate invokes higher atmospheric CO 2 levels from volcanic outgassing, but correlation among temperature estimates, proxy estimates of pCO 2 , and intervals of high fluxes of both mafic and silicic volcanism are mostly poor. This comparison demonstrates that the relative timing between events and their putative consequences need to be better constrained to test and more fully understand relationships among volcanism, pCO 2 , temperature ocean circulation, Earth's biota and the carbon cycle.

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Ocean View Site

Cited by 7 publications

References 20 publications

Miocene relative sea level on the New Jersey shallow continental shelf and coastal plain derived from one-dimensional backstripping: A case for both eustasy and epeirogeny

Miocene relative sea level on the New Jersey shallow continental shelf and coastal plain derived from one-dimensional backstripping: A case for both eustasy and epeirogeny

Early Miocene sequence development across the New Jersey margin

The rise and fall of the Cretaceous Hot Greenhouse climate

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