Ojha, Lujendra
Wilhelm, Mary Beth
Murchie, Scott L.
McEwen, Alfred S.
Wray, James J.
Hanley, Jennifer https://orcid.org/0000-0002-0801-7654
Massé, Marion
Chojnacki, Matt
Article History
Received: 22 April 2015
Accepted: 21 August 2015
First Online: 28 September 2015
Change Date: 14 October 2015
Change Type: Correction
Change Details: In the version of this Letter originally published, the journal name in ref. 12 was incorrect, it should have been Nature Geoscience. This has been corrected in all versions of the Letter.
Competing interests
: The authors declare no competing financial interests.