Warren Sharp, an expert on dating fossils at the Berkeley Geochronology
Center in California, said the age of 210,000 years is "not well supported by the data."
I would say, with pretty high confidence, that the eruptions occurred within 50,000 years, and maybe 30,000 years, of the impact, which means they were synchronous within the margin of error," Paul Renne, a professor-in-residence of Earth and planetary science at UC Berkeley, director of the Berkeley Geochronology
Center and senior author of the study, said.
I would say, with pretty high confidence, that the eruptions occurred within 50,000 years, and maybe 30,000 years, of the impact, which means they were synchronous within the margin of error," said Paul Renne, a professor-in-residence of earth and planetary science at UC Berkeley, director of the Berkeley Geochronology
Center and senior author of the study, which will appear online Feb.
Among their topics are the provenance and alteration of feldspathic and quartzose sediments in southern Mexico: an application of Krynine's hypothesis on second-cycle arkose, the paleomagnetism and rotation history of the Blue Mountains in Oregon, Late Cenozoic uplift and shortening in the central California Coast Ranges and the development of the San Joaquin Basin foreland, local-to-distance provenance cyclicity of the southern Front Range in central Colorado: insights from detrial zircon geochronology
, and Cenozoic basin evolution in the Indus-Yarlung suture zone and High Himalaya.
The idea was first proposed back in 1973 by a geologist named William White, but no-one took him seriously, said C Brenhin Keller of the Berkeley Geochronology
Center, who led the study published in the Proceedings of the National Academy of Sciences.
A revised Cenozoic geochronology
Geology (Structural Geology, Petrology, Geochemistry, Geophysics, Sedimentology, Geohydrology, Geochronology
, Mineralogy, Physical Geology, Marine Geology, Environmental Geology, Palaeontology, Geology of Energy Resources: Uranium, Coal, Petroleum)
The team of researchers for the find comprises Shanti Pappu & Kumar Akhilesh (archaeologists: directing the project), Yanni Gunnell (University of Lyon, geomorphologist), A.K.Singhvi, Haresh Rajapara and A.D.Shukla from the Physical Research Laboratory, Ahmedabad, India (responsible for the geochronology
Liu et al., "Geochronology
and fluid inclusion study of the Jiguanshan porphyry Mo deposit, Inner Mongolia," Acta Petrologica Sinica, vol.
and geochemistry of the Bolong porphyry Cu- Au deposit, Tibet and its mineralizing significance.