Interhemispheric radio-astrochronological calibration of the time scales from the Andean and the Tethyan areas in the Valanginian–Hauterivian (Early Cretaceous)

Abstract

An integrated radio-astrochronological framework of the Agrio Formation in the Andean Neuquén Basin of west-central Argentina provides new constraints on the age and the duration of the late Valanginian through Hauterivian stratigraphic interval. A CA-ID TIMS

Early Cretaceous subsidence of the Naturaliste Plateau defined by a new record of volcaniclastic-rich sequence at IODP Site U1513

“…The sedimentation rate is much lower from the late Hauterivian to early Aptian, ranging from 1 to 40 m/myr. Recent studies have suggested new ages for the geomagnetic chrons in the Valanginian to Aptian stages, based on numerical U-Pb and Ar-Ar ages intercalibrated with astrochronology (Aguirre-Urreta et al, 2015-Urreta et al, , 2019Martinez et al, 2015;Olierook et al, 2019c). With a difference of 3.5 to 5.5 m.y., these ages are substantially younger than those proposed in the Geologic Time Scale ofOgg et al (2012Ogg et al ( , 2016, which suggest <130.9-122.3 Ma for chrons M10Nn.1n to M0r of Unit V(Supplementary material 3).…”

Evolution of the Southwest Australian Rifted Continental Margin During Breakup of East Gondwana: Results From International Ocean Discovery Program Expedition 369

“…The Late Cretaceous chron ages are from Malinverno et al. (2012), with the ages of chrons M0r through M11r revised here to match the Valanginian to Barremian stage ages indicated by recent radio‐astrochronological data integrated with bio‐ and chemostratigraphy (Aguirre‐Urreta et al., 2019; Bodin et al., 2006; Frau et al., 2018; Martinez et al., 2013; Olierook, Jourdan et al., 2019) (Tables 1 and 2). From these works, the Hauterivian Stage started at 131.3 ± 0.2 Ma, the Barremian Stage at 126.1 ± 0.2 Ma, and the Aptian Stage at 121.5 ± 0.2 Ma.…”

“…(2016) adjusted to fit stage and ammonite zone boundary ages of Aguirre‐Urreta et al. (2019) complemented with cyclostratigraphy of Bodin et al. (2006) from M1n to M0r and of Martinez et al.…”

“… a Revised chron ages are interpolated from position of chron from base of reference ammoniate zone and ages of ammonite zone (Ogg et al., 2016) using revised stage ages of Aguirre‐Urreta et al. (2019) complemented with cyclostratigraphy of Bodin et al. (2006) from M1n to M3n and cyclostratigraphy of Martinez et al.…”

Integrated astrochronology of the Barremian Stage (Early Cretaceous) and its biostratigraphic subdivisions

“…The Arroyo Gilico section covers 74.68 m and a duration of 4.02 Myr based on previous duration assessments of ammonite zones and subzones from astrochronology and bed counting (Bodin et al, 2006a;Martinez et al, 2012Martinez et al, , 2015Aguirre-Urreta et al, 2019). It represents a mean sedimentation rate of 1.85 cm.kyr -1 .…”