Talk:Brunhes–Matuyama reversal

message: By what dating method was this reversal event determined to have occurred?Kenny56 04:08, 27 December 2005 (UTC)
replies: text: Good question. I don't know the answer. It is a common horizon across a lot of sequences, so the asnwer is probably that it occurs in some that can be very well dated. William M. Connolley 20:34, 28 December 2005 (UTC)

text: Can you please clarify the question? Are you interested in the dating method used to obtain the 0.78 Myr age, or the method used to determine that the reversal occured in the first place?--Octupole 21:04, 30 December 2005 (UTC)
replies: text:  I'm certainly interested in, "how was it first dated to 780 kyr"? By 1976 it was used (hayes imbrie shackleton) to date sediment cores; that implies it couldn't have been dated *from* sediment cores... William M. Connolley 22:10, 30 December 2005 (UTC)

text: The dating method used to obtain the 0.78 Myr age.Kenny56 05:54, 2 January 2006 (UTC)
replies: text:  I think it was dated using the K-Ar and Ar-Ar methods.Octupole 03:23, 11 February 2007 (UTC)
thread_title:  Date for this reversal? 

message: It would be great to have some description of the effect this had on the planet. Hyacinth 09:17, 13 January 2007 (UTC)
replies: text: I'm not really sure it has one. I've spoken to ice core people who looked for it in the EPICA core, but only (I think) in terms of subtle effects. No-one seemed to be epecting anything major William M. Connolley 10:53, 13 January 2007 (UTC)

text: No one knows William M. Connolley 17:11, 2 June 2007 (UTC)
replies: text: That is to say, no one knows WHEN. Certain effects can be anticipated, see http://www.google.com/search?q=effects+of+geomagnetic+pole+reversal. 76.247.47.238 20:35, 8 September 2007 (UTC)
thread_title: Effect

message: This  adds text from a report on a paper not yet published, which is dubious William M. Connolley (talk) 07:35, 3 September 2010 (UTC)
replies: text: I went to the Geophysical Research Letters page and I can't confirm that the paper is in press. The claim about rapid polar wander during reversals is indeed controversial, but some of its proponents are distinguished scientists, so it deserves a mention. However, the reversal in question is about 15 million years ago, so it's not directly relevant to the Brunhes-Matuyama reversal. It would be more appropriate to add an entry in the main article on geomagnetic reversals with citations for the earlier Steens Mountain work. RockMagnetist (talk) 14:40, 3 September 2010 (UTC)
replies: text: Bogue, S. W., and J. M. G. Glen (2010), Very rapid geomagnetic field change recorded by the partial remagnetization of a lava flow, Geophys. Res. Lett., doi:10.1029/2010GL044286 (doi not created yet), in press.  (accepted 20 August 2010) --Chris.urs-o (talk) 19:08, 3 September 2010 (UTC)

text: Goodness Chris, how do you manage it :X ResMar 18:52, 6 September 2010 (UTC)
replies: text: I'm impressed too. There still remains the question - doesn't this really belong on a more general page on reversals? RockMagnetist (talk) 16:15, 9 September 2010 (UTC)
thread_title:  Fast? 

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replies: text: There was no need for an archive - the original link worked. Not the fault of Cyberbot II, I think. RockMagnetist(talk) 18:28, 30 March 2016 (UTC)
thread_title:  External links modified 

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