The Cretaceous-Tertiary boundary at Gubbio revisited: vertical extent of the Ir anomaly

@inproceedings{Rocchia1990TheCB,
  title={The Cretaceous-Tertiary boundary at Gubbio revisited: vertical extent of the Ir anomaly},
  author={Robert Rocchia and Daniel Boclet and Ph. Bont{\'e} and Celestine Jehanno and Yan Chen and Vincent E. Courtillot and Claire Mary and F. van Wezel},
  year={1990}
}
Abstract The classical Gubbio (Italy) Cretaceous-Tertiary boundary section has been resampled for both magnetostratigraphy and iridium. Paleomagnetic samples were taken over 7 m in the Maastrichtian and 6 m in the Paleocene. Previous results obtained a decade ago are confirmed. The reversal sequence is well defined and the individual reversals are somewhat more precisely located. A noticeable difference is the location of the position of the 29N/29R limit which may be lowered by 20–30 cm in the… CONTINUE READING

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The Weathering-Modified Iridium Record of a New Cretaceous—Palaeogene Site at Lechówka Near Chełm, SE Poland, and Its Palaeobiologic Implications

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