Evidence of climatic cooling at the Early/Late Maastrichtian boundary from inoceramid distribution and isotopes: Sopelana sections, Basque Country, Spain

Gómez-Alday, Juan José; López, Gregorio; Elorza, Javier

doi:10.1016/j.cretres.2004.06.009

Cited by 25 publications

(19 citation statements)

References 61 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…They also opined that, as Deccan volcanism was coeval to K-T boundary event, weathering of volcanic rocks may have influenced reduction of 87 Sr/ 86 Sr values in the early Cenozoic as is evident in figure 4. Gomez-Alday et al (2004) are of the opinion that negative excursion of stable isotopes, particularly the carbon isotope is typical of lowstand systems tract, which is in conformity with the present observations. The carbon isotopic profile shows a gradual negative excursion, may be due to sea level fall (Marquillas et al 2007), exposure of previously submarine regions to subaerial conditions, oxidation of carbon stored there and resultant depletion of C 13 (Holser and Magaritz 1992).…”

Section: Sea Level Changes and Resultant Strontium Isotopic Excursionssupporting

confidence: 91%

87Sr/86Sr anomalies in Late Cretaceous-Early Tertiary strata of the Cauvery basin, south India: Constraints on nature and rate of environmental changes across K-T boundary

et al. 2010

View full text Add to dashboard Cite

The Ariyalur-Pondicherry sub-basin of the Cauvery basin comprises a near complete stratigraphic record of Upper Cretaceous-Lower Tertiary periods. Earlier studies have documented variations of clay mineral assemblages, change in microtexture of siliciclasts and many geochemical and stable isotopic anomalies far below the Cretaceous-Tertiary boundary (KTB) in these strata. This paper documents the occurrences of two positive 87 Sr/ 86 Sr anomalies preceding K-T boundary in this basin and discusses plausible causes. Analysis of trace elemental and stable isotopic profiles, sedimentation history, petrography and mineralogy of the rocks reveal that while both the anomalies may be due to increased detrital influx caused by sea level and climatic changes, the second anomaly might have been influenced by Deccan volcanism which in turn predated KTB. Record of such anomalies preceding K-T boundary supports the view of multi-causal step-wise extinction of biota across KTB.

show abstract

Section: Sea Level Changes and Resultant Strontium Isotopic Excursionssupporting

confidence: 91%

87Sr/86Sr anomalies in Late Cretaceous-Early Tertiary strata of the Cauvery basin, south India: Constraints on nature and rate of environmental changes across K-T boundary

et al. 2010

View full text Add to dashboard Cite

show abstract

“…In global terms, the early Cretaceous climate was characterized by a cool greenhouse climate in the Berriasian–Hauterivian followed by a warm greenhouse climate in the Hauterivian–Barremian and was concurrent with arid and humid climate fluctuations (Föllmi, ; Keller, ; Price, ; Price & Nunn, ). The late Cretaceous (Maastrichtian) was described as a long‐term climatic cooling trend but was punctuated by two pulses of warming (Gao et al, ; Gómez‐Alday, López, & Elorza, ; Li & Keller, ; Sheldon, Ineson, & Bown, ; Thibault & Husson, ). Moreover, there is a distinct climatic distribution pattern in various latitudinal zones during the early and late Cretaceous (Amiot et al, ; Föllmi, ; Scotese, ; Figure ).…”

Section: Discussionmentioning

confidence: 88%

Lower and upper Cretaceous paleosols in the western Sichuan Basin, China: Implications for regional paleoclimate

Wen

Huang

2018

Geological Journal

View full text Add to dashboard Cite

Pedogenic features of paleosols preserved in the lower and upper Cretaceous sedimentary strata of the western Sichuan Basin, China, were described and examined in terms of their macromorphology and micromorphology, mineralogy, and geochemistry. These Cretaceous paleosols (entisols, inceptisols, and aridisols) are analogous to modern soil orders based on soil taxonomy (Soil Survey Staff, 2014). A quantitative reconstruction of paleoclimates inferred from the geochemical composition of paleosol horizons, depth to carbonate nodules, and the stable oxygen isotopic composition of pedogenic carbonates in paleosols indicates that a cool-arid climate associated with short-term subhumid fluctuations prevailed in the early Cretaceous (Hauterivian) and a cool-arid climate regime existed in the late Cretaceous (Maastrichtian) of the Sichuan Basin. Atmospheric CO 2 concentrations estimated from the paleosol barometer indicated values between 156 ± 138 and 753 ± 339 ppmv for the Hauterivian and between 110 ± 71 and 235 ± 77 ppmv for the middle-lateMaastrichtian. An overall coupling between atmospheric pCO 2 and paleotemperature occurred in the Sichuan Basin, while the covariations are likely linked to global cooling events in the Maastrichtian and/or are likely associated with the Faraoni oceanic anoxic event (F-OAE) during the late Hauterivian. Paleoclimate variations in the Sichuan Basin were controlled by regional paleogeography, the prevalence of subtropical high-pressure systems, monsoonal circulation, and the atmospheric CO 2 level in the early and late Cretaceous.

show abstract

“…The ammonite faunas from Sopelana and the sections of Zumaia, Bidart and Hendaye have been described by Ward and Kennedy (1993). The distribution and shell stable isotope ratios of inoceramids at Sopelana have been studied in detail (Elorza and García-Garmilla, 1998;Gómez-Alday et al, 2004;Gómez -Alday et al, 2008). Intervals at Sopelana were included in studies on CaCO 3 and stable isotope variations by Alvarez-Llano et al (2006), Santander et al (2007) Domínguez et al (2007 and Jiménez Berrocoso et al (2012).…”

Section: Sopelanamentioning

confidence: 99%

An astronomical time scale for the Maastrichtian based on the Zumaia and Sopelana sections (Basque country, northern Spain)

Batenburg

Gale

Sprovieri

et al. 2014

JGS

View full text Add to dashboard Cite

The rhythmically bedded limestone-marl alternations in the coastal cliffs of Sopelana and Zumaia in the Basque country, northern Spain, permit testing and refining of existing Maastrichtian chronologies (latest Cretaceous). The recently established astronomical time scale for the late Maastrichtian at Zumaia is extended into C31n with the integrated stratigraphy of the Sopelana section. The cyclic alternations of hemipelagic limestones and marls at Sopelana show a strong influence of eccentricity-modulated precession. Together, the Zumaia and Sopelana sections span almost the entire Maastrichtian, and encompass thirteen 405kyr cycles, spanning a total duration of 5.3Myr. From the K/Pg boundary downwards, 405kyr minima in the lithological, magnetic susceptibility and reflectance data records are tuned to successive 405kyr minima in the new La2011 eccentricity solution. Assuming a K/Pg boundary age of 65.97Ma, we present orbitally tuned ages of biostratigraphic and magnetostratigraphic events. While the bases of Chrons C29r and C30n were reliably established at Zumaia and are in good agreement with previous studies, new data from Sopelana provide a refinement of the basal age of Chron C31r. Additional planktonic foraminifera and calcareous nannoplankton data from Zumaia, and new calcareous nannoplankton data from Sopelana allow for worldwide correlation of the cyclostratigraphy of the Basque country. Supplementary materials: Identification of the 405 kyr minima; Geologic map; Paleomagnetic results; Sopelana data; Redfit 3.8 power spectra (.pdf); data tables (.rtf)

show abstract

Evidence of climatic cooling at the Early/Late Maastrichtian boundary from inoceramid distribution and isotopes: Sopelana sections, Basque Country, Spain

Cited by 25 publications

References 61 publications

87Sr/86Sr anomalies in Late Cretaceous-Early Tertiary strata of the Cauvery basin, south India: Constraints on nature and rate of environmental changes across K-T boundary

87Sr/86Sr anomalies in Late Cretaceous-Early Tertiary strata of the Cauvery basin, south India: Constraints on nature and rate of environmental changes across K-T boundary

Lower and upper Cretaceous paleosols in the western Sichuan Basin, China: Implications for regional paleoclimate

An astronomical time scale for the Maastrichtian based on the Zumaia and Sopelana sections (Basque country, northern Spain)

Contact Info

Product

Resources

About