10Be evidence for the Matuyama–Brunhes geomagnetic reversal in the EPICA Dome C ice core

  title={10Be evidence for the Matuyama–Brunhes geomagnetic reversal in the EPICA Dome C ice core},
  author={Grant M. Raisbeck and Françoise Yiou and Olivier Cattani and Jean Jouzel},
An ice core drilled at Dome C, Antarctica, is the oldest ice core so far retrieved. On the basis of ice flow modelling and a comparison between the deuterium signal in the ice with climate records from marine sediment cores, the ice at a depth of 3,190 m in the Dome C core is believed to have been deposited around 800,000 years ago, offering a rare opportunity to study climatic and environmental conditions over this time period. However, an independent determination of this age is important… 

The EDC3 chronology for the EPICA Dome C ice core

Abstract. The EPICA (European Project for Ice Coring in Antarctica) Dome C drilling in East Antarctica has now been completed to a depth of 3260 m, at only a few meters above bedrock. Here we present

Refining chronology for the Brunhes-Matuyama geomagnetic boundary

The geomagnetic polarity reversals, including the Matuyama–Brunhes boundary (MBB), provides an invariant datum plane for sediments and lavas. However, geomagnetic synchronization has complications

Quaternary stratigraphy and ice cores

The Laschamp geomagnetic excursion featured in nitrate record from EPICA-Dome C ice core

The evidence that the nitrate record from the EDC ice core is able to capture the Laschamp event hints toward the possibility of using this marker for studying galactic cosmic ray flux variations and thus also major geomagnetic field excursions at pluri-centennial-millennial time scales, thus opening up new perspectives in paleoclimatic studies.

Where to find 1.5 million yr old ice for the IPICS "Oldest-Ice" ice core

The recovery of a 1.5 million yr long ice core from Antarctica represents a keystone of our understanding of Quaternary climate, the progression of glaciation over this time period and the role of

Stratigraphic templates for ice core records of the past 1.5 Myr

Abstract. The international ice core community has a target to obtain continuous ice cores stretching back as far as 1.5 Myr. This would provide vital data (including a CO2 profile) allowing us to

Retrieving the paleoclimatic signal from the deeper part of the EPICA Dome C ice core

Abstract. An important share of paleoclimatic information is buried within the lowermost layers of deep ice cores. Because improving our records further back in time is one of the main challenges in



Beryllium 10 in the Greenland Ice Core Project ice core at Summit

Concentrations of the cosmogenic isotope 10Be have been measured in more than 1350 samples from the Greenland Ice Core Project (GRIP) ice core drilled at Summit, Greenland. Although a dust-associated

10Be in ice at Vostok Antarctica during the last climatic cycle

We have previously reported accelerator mass spectrometer measurements of the cosmogenic isotope 10Be (half life 1.5 Myr) in an 906-m ice core recovered at Dome C, Antarctica1. In addition to an

Evidence for two intervals of enhanced 10Be deposition in Antarctic ice during the last glacial period

We have previously reported concentration profiles of cosmic ray produced (cosmogenic) 10Be in deep ice cores from Dome C and Vostok, Antarctica1,2. In both these cores we found a concentration of

8 glacial cycles from an Antarctic ice core

A new ice core from Dome C, East Antarctica, provides a climate record extending740,000 years back in time. This almost doubles the period covered by the Vostokcore. The new data confirm the Vostok

Structural and temporal requirements for geomagnetic field reversal deduced from lava flows

Data support the claim that complete reversals require a significant period for magnetic flux to escape from the solid inner core and sufficiently weaken its stabilizing effect.

Eight glacial cycles from an Antarctic ice core

The recovery of a deep ice core from Dome C, Antarctica, that provides a climate record for the past 740,000 years is reported, suggesting that without human intervention, a climate similar to the present one would extend well into the future.

Geomagnetic palaeointensities and astrochronological ages for the Matuyama–Brunhes boundary and the boundaries of the Jaramillo Subchron: palaeomagnetic and oxygen isotope records from ODP Site 983

  • J. ChannellH. F. Kleiven
  • Environmental Science, Geography
    Philosophical Transactions of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences
  • 2000
Compared geomagnetic palaeointensity proxies, palaeomagnetic directions, and δ18O for the 700–1100 ka interval from ODP Site 983, where mean sedimentation rates are ca.13 cm kyr−1.5, shows several short intervals of low palaeointedensity which sometimes coincide with high–amplitude secular variation.