Academic Commons



Kennedy, Martin J.; Christie-Blick, Nicholas; Sohl, Linda E.

The authors respond to Hoffman et al. (2001), who acknowledged that methane may have played an important role in unusual events associated with Neoproterozoic glaciation, but questioned the authors' permafrost gas hydrate hypothesis for 13C-depleted cap carbonate formation. The critique focused on three issues: (1) an interpretation for tube structures in cap carbonates unrelated to gas migration; (2) the absence of a suitable source for methane gas; and (3) the degree of 13C depletion in sheet-crack cements.


  • thumnail for Kennedy.Geology.30.287.pdf Kennedy.Geology.30.287.pdf application/pdf 24.9 KB Download File

Also Published In


More About This Work

Academic Units
Earth and Environmental Sciences
Center for Climate Systems Research
Published Here
August 28, 2013
Academic Commons provides global access to research and scholarship produced at Columbia University, Barnard College, Teachers College, Union Theological Seminary and Jewish Theological Seminary. Academic Commons is managed by the Columbia University Libraries.