Signal analysis of cyclicity in Maastrichtian pelagic chalks from the Danish North Sea

Stage, M.

doi:10.1016/s0012-821x(99)00213-7

Cited by 17 publications

(8 citation statements)

References 34 publications

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“…and winnowing of an unconsolidated to partly lithified chalk by a bottom current. The decimetre-scale to metre-scale variations in density and porosity values observed in the log curves can originate from various mechanisms (see Niebuhr & Prokoph, 1997;Scholle et al, 1998;Bramwell et al, 1999;Stage 1999Stage , 2001Niebuhr et al, 2001;Damholt & Surlyk, 2004 for detailed discussions). The thick overlying succession of facies BHC/LC in the lower channel unit reflects vertical aggradation of pelagic chalk within the channel ( Table 2).…”

Section: Facies Association Of the Lower Channel-fill Unitmentioning

confidence: 99%

Channel development in the chalk of the Tor Formation, North Sea

Gennaro

Wonham

2014

From Depositional Systems to Sedimentary Successions on the Norwegian Continental Margin

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Section: Facies Association Of the Lower Channel-fill Unitmentioning

confidence: 99%

Channel development in the chalk of the Tor Formation, North Sea

Gennaro

Wonham

2014

From Depositional Systems to Sedimentary Successions on the Norwegian Continental Margin

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“…Studies of sedimentary cyclicity near the K/T boundary have used magnetic susceptibility (e.g., D'Hondt et al 1996;Stage 1999Stage , 2001, densitometers (Herbert & D'Hondt 1990), carbonate content (e.g., ten Kate & Sprenger 1993), bed thicknesses (e.g., Schwarzacher 1987), oxygen isotopes (e.g., Ditchfield & Marshall 1989), or combinations of these. Studies using natural gamma radiation from petroleum exploration wells include Stage (1999Stage ( , 2001.…”

Section: Previous Workmentioning

confidence: 99%

“…Studies using natural gamma radiation from petroleum exploration wells include Stage (1999Stage ( , 2001. Most studies of magnetic susceptibility have used drillhole electric logs and core, though Hansen et al (1993) and ten Kate & Sprenger (1993) used magnetic susceptibility from outcrop samples.…”

Section: Previous Workmentioning

confidence: 99%

Orbitally controlled cyclicity around the Cretaceous/Tertiary boundary, northern South Island, New Zealand

Fielding¹,

Hollis

2003

New Zealand Journal of Geology and Geophysics

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Outcrop gamma ray measurements are used as a proxy for terrigenous clastic component in CretaceousPaleocene carbonate-chert successions in northern South Island, New Zealand, and show Milankovitch-scale periodicity above the Cretaceous/Tertiary (K/T) boundary.Higher baseline values of the gamma ray records from sections in the south compared to those in the north reflect increased terrigenous clay content associated with shallowing in paleobathymetry towards the south. In each northern section, the gamma ray baseline level increases across the K/T boundary, consistent with an increase in terrigenous clay in the early Paleocene; this might record increased erosion due to destruction or change of vegetation or a fall in relative sea level. Peak amplitudes in the gamma ray record are higher for the early Paleocene, perhaps recording more pronounced climatic variability after the K/ T boundary event, and consistent with a South Atlantic record. Cycle frequencies in the Late Cretaceous are not well constrained due to the sparseness of biostratigraphic events but could be consistent with eccentricity. Biostratigraphic age control in the Paleocene constrains cycle frequency to c. 120 000 yr and suggests the early Paleocene climate in the high latitude, southwest Pacific, was modulated by orbital eccentricity.

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“…As a global climate change model, Milankovitch theory provides a reasonable interpretation for the driving mechanisms of Quaternary glacial-interglacial cycles (Milankovitch, 1941;Berger, 1988). Many studies indicated that Milankovitch climate forcing was significant in Cretaceous (Stage, 1999(Stage, , 2003Prokoph et al, 2001;D'Argenio et al, 2004;Niebuhr, 2005;Latta et al, 2006). With the strong greenhouse climate dominated in Cretaceous, even the third order sea-level changes in the Cenomanian stage might be driven by the long eccentricity cycle (400 ka) (Gale et al, 2002).…”

Section: Introductionmentioning

confidence: 99%

Recognition of Milankovitch Cycles in the Natural Gamma–Ray Logging of Upper Cretaceous Terrestrial Strata in the Songliao Basin

Zhang

Suwen

et al. 2007

Acta Geologica Sinica (Eng)

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Spectrogram analysis of seven natural gamma-ray logging of Member 1 of the Qingshankou Formation (K2qn') and Member 1 and 2 of the Nenjiang Formation ( K z~"~) of Late Cretaceous age in the Songliao Basin reveals sedimentary cyclicities controlled by Milankovitch climate periodicities. The recognition of Milankovitch cycles allows estimation of an average accumulation rate of -7.55-8.62 cmka for the Kzqn' sections, and -6.69-10.16 cmka for the K# sections. Two marine transgression events occurred during the deposition of Kzqn' and Kz~'" and their ages are at -0.74-1.10 Ma and -2.38-4.84 Ma, respectively. Identification of Milankovitch cycles from fine-grained deep lake sedimentary rocks in the Songliao Basin may provide great potential for high-resolution stratigraphic subdivisions and correlations.

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Signal analysis of cyclicity in Maastrichtian pelagic chalks from the Danish North Sea

Cited by 17 publications

References 34 publications

Channel development in the chalk of the Tor Formation, North Sea

Channel development in the chalk of the Tor Formation, North Sea

Orbitally controlled cyclicity around the Cretaceous/Tertiary boundary, northern South Island, New Zealand

Recognition of Milankovitch Cycles in the Natural Gamma–Ray Logging of Upper Cretaceous Terrestrial Strata in the Songliao Basin

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