ORCID Profile
0000-0002-1472-1074
Current Organisation
Utrecht University
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Publisher: Springer Science and Business Media LLC
Date: 11-2013
Publisher: Wiley
Date: 02-2010
Publisher: American Geophysical Union (AGU)
Date: 11-2016
DOI: 10.1002/2016GC006344
Abstract: We have identified millennial‐scale variations in magnetic mineral diagenesis from Pacific Ocean sediments offshore of Japan that we correlate with changes in organic carbon burial that were likely driven by Asian monsoon fluctuations. The correlation was determined by identifying offsets between the positions of fossil diagenetic fronts and climatically induced variations in organic carbon burial inferred from magnetic and geochemical analyses. Episodes of intense monsoon activity and attendant sediment magnetic mineral diagenesis also appear to correlate with Heinrich events, which supports the existence of climatic telecommunications between Asia and the North Atlantic region. Several lines of evidence support our conclusions: (1) fluctuations in down‐core magnetic properties and diagenetic pyrite precipitation are approximately coeval (2) localized stratigraphic intervals with relatively stronger magnetic mineral dissolution are linked to enhanced sedimentary organic carbon contents that gave rise to nonsteady state diagenesis (3) down‐core variations in elemental S content provide a proxy for nonsteady state diagenesis that correlate with key records of Asian monsoon variations and (4) relict titanomagnetite that is preserved as inclusions within silicate particles, rather than secondary authigenic phases (e.g., greigite), dominates the strongly diagenetically altered sediment intervals and are protected against sulfidic dissolution. We suggest that such millennial‐scale environmental modulation of nonsteady state diagenesis (that creates a temporal diagenetic filter and relict magnetic mineral signatures) is likely to be common in organic‐rich hemipelagic sedimentary settings with rapidly varying depositional conditions. Our work also demonstrates the usefulness of magnetic mineral inclusions for recording important environmental magnetic signals.
Publisher: American Geophysical Union (AGU)
Date: 08-2014
DOI: 10.1002/2014JB011213
Publisher: Elsevier BV
Date: 05-2017
Publisher: Elsevier BV
Date: 2019
Publisher: American Geophysical Union (AGU)
Date: 15-08-1997
DOI: 10.1029/97GL02029
Publisher: American Geophysical Union (AGU)
Date: 12-2008
DOI: 10.1029/2008GC002127
Publisher: Springer Science and Business Media LLC
Date: 2003
Publisher: The Royal Society
Date: 15-07-1999
Publisher: American Geophysical Union (AGU)
Date: 12-2013
DOI: 10.1002/2013JB010381
Publisher: American Association for the Advancement of Science (AAAS)
Date: 25-04-2008
Abstract: Calibration of the geological time scale is achieved by independent radioisotopic and astronomical dating, but these techniques yield discrepancies of ∼1.0% or more, limiting our ability to reconstruct Earth history. To overcome this fundamental setback, we compared astronomical and 40 Ar/ 39 Ar ages of tephras in marine deposits in Morocco to calibrate the age of Fish Canyon sanidine, the most widely used standard in 40 Ar/ 39 Ar geochronology. This calibration results in a more precise older age of 28.201 ± 0.046 million years ago (Ma) and reduces the 40 Ar/ 39 Ar method's absolute uncertainty from ∼2.5 to 0.25%. In addition, this calibration provides tight constraints for the astronomical tuning of pre-Neogene successions, resulting in a mutually consistent age of ∼65.95 Ma for the Cretaceous/Tertiary boundary.
Publisher: Springer Science and Business Media LLC
Date: 11-2019
Publisher: Elsevier BV
Date: 08-2006
Publisher: Elsevier BV
Date: 2010
Publisher: Elsevier BV
Date: 09-1997
Publisher: Elsevier BV
Date: 02-2023
Publisher: Elsevier BV
Date: 08-2006
No related grants have been discovered for Wout Krijgsman.