Intercalibration of astronomical and radioisotopic time

Renne, Paul R.; Deino, Alan L.; Walter, Robert C.; Turrin, B. D.; Swisher, Carl C.; Becker, T.; Curtis, Garniss H.; Sharp, Warren D.; Jaouni, Abdur-Rahim

doi:10.1130/0091-7613(1994)022<0783:ioaart>2.3.co;2

Cited by 270 publications

(131 citation statements)

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“…This can only be explained by a twocycle delayed acquisition of magnetic remanence in this specific interval in the Rossello composite, which is unlikely considering the consistency of the APTS with other studies [7,[27][28][29][30].…”

Section: Alternative Correlation Of Cycles K19-t6mentioning

confidence: 88%

Magnetostratigraphy-based astronomical tuning of the early Pliocene lacustrine sediments of Ptolemais (NW Greece) and bed-to-bed correlation with the marine record

Vugt

Steenbrink

Langereis

et al. 1998

Earth and Planetary Science Letters

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Continental deposits from the early Pliocene lacustrine Ptolemais basin in NW Greece display rhythmical alternations of lignite and marl beds. Three parallel sections from this area are studied using magnetostratigraphy and cyclostratigraphy. The presence of the greater part of the Gilbert Chron enables the recognition of astronomical periodicities in the succession. Especially the precessional influence is evident, as it determines the lithological cycles. The continental Ptolemais composite section is correlated to the most recent astronomical time scale -and thus to the marine reference section: the Rossello composite from Sicily [C.G. Langereis, F.J. Hilgen, The Rossello composite: a Mediterranean and global reference section for the Early to early Late Pliocene, Earth Planet. Sci. Lett. 104 (1991) 211-225] -on a bed-to-bed scale. It is concluded that lignite corresponds to an insolation minimum (beige layer in the Rossello composite), and marl to an insolation maximum (grey layer in the Rossello composite). This implies a precipitation increase during insolation maxima in early Pliocene continental Greece.

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Section: Alternative Correlation Of Cycles K19-t6mentioning

confidence: 88%

Magnetostratigraphy-based astronomical tuning of the early Pliocene lacustrine sediments of Ptolemais (NW Greece) and bed-to-bed correlation with the marine record

Vugt

Steenbrink

Langereis

et al. 1998

Earth and Planetary Science Letters

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“…For example, the age of the Fish Canyon Tuff (FCT), which provides one of the most widely used standards for age calibration in radioisotopic dating, varies between 27.55 and 27.95 Ma [14,22,30]. This age uncertainty results in a potential error of 1.5%.…”

Section: Radioisotopic Age Constraintsmentioning

confidence: 99%

Extending the astronomical (polarity) time scale into the Miocene

Hilgen

Krijgsman²,

Langereis³

et al. 1995

Earth and Planetary Science Letters

389

310

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“…These ages are indistinguishable at 34.2 ± 0.5, 34.2 ± 0.6, and 34.25 ± 0.3 Ma, respectively ( Fig. 1) (corrected for new revised ages of the neutron flux monitors) (41), and indicate rapid cooling of the sole to 550-400°C after reaching peak metamorphic temperatures (18). Lower grade, altered greenstones, and pillow lavas structurally beneath the metamorphic sole are exposed further south in the Sagasa Point area (Figs.…”

Section: Age and Geochemistry Of The Palawan Ophiolite And Its Solementioning

confidence: 99%

Rapid conversion of an oceanic spreading center to a subduction zone inferred from high-precision geochronology

Keenan

Encarnación

Buchwaldt

et al. 2016

Proc. Natl. Acad. Sci. U.S.A.

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Where and how subduction zones initiate is a fundamental tectonic problem, yet there are few well-constrained geologic tests that address the tectonic settings and dynamics of the process. Numerical modeling has shown that oceanic spreading centers are some of the weakest parts of the plate tectonic system [Gurnis M, Hall C, Lavier L (2004) Geochem Geophys Geosys 5:Q07001], but previous studies have not favored them for subduction initiation because of the positive buoyancy of young lithosphere. Instead, other weak zones, such as fracture zones, have been invoked. Because these models differ in terms of the ages of crust that are juxtaposed at the site of subduction initiation, they can be tested by dating the protoliths of metamorphosed oceanic crust that is formed by underthrusting at the beginning of subduction and comparing that age with the age of the overlying lithosphere and the timing of subduction initiation itself. In the western Philippines, we find that oceanic crust was less than ∼1 My old when it was underthrust and metamorphosed at the onset of subduction in Palawan, Philippines, implying forced subduction initiation at a spreading center. This result shows that young and positively buoyant, but weak, lithosphere was the preferred site for subduction nucleation despite the proximity of other potential weak zones with older, denser lithosphere and that plate motion rapidly changed from divergence to convergence. subduction initiation | tectonics | geochronology | Philippines | ophiolite

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Intercalibration of astronomical and radioisotopic time

Cited by 270 publications

References 0 publications

Magnetostratigraphy-based astronomical tuning of the early Pliocene lacustrine sediments of Ptolemais (NW Greece) and bed-to-bed correlation with the marine record

Magnetostratigraphy-based astronomical tuning of the early Pliocene lacustrine sediments of Ptolemais (NW Greece) and bed-to-bed correlation with the marine record

Extending the astronomical (polarity) time scale into the Miocene

Rapid conversion of an oceanic spreading center to a subduction zone inferred from high-precision geochronology

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