10,323
edits
Changes
Jump to navigation
Jump to search
Line 44:
Line 44: − +
Sequences during moderate-amplitude, high-frequency cycles (view source)
Revision as of 15:32, 10 December 2015
, 15:32, 10 December 2015no edit summary
* Vadose and upper phreatic sparry calcite cement often plugs primary and secondary porosity in the upper parts of sequences
* Vadose and upper phreatic sparry calcite cement often plugs primary and secondary porosity in the upper parts of sequences
* Primary porosity may be greatest in the middle or lower parts of sequences
* Primary porosity may be greatest in the middle or lower parts of sequences
* Meteoric diagenesis extends down into underlying older sequences because of deep groundwater zones; internal barriers may mitigate the effect
* Meteoric [[diagenesis]] extends down into underlying older sequences because of deep groundwater zones; internal barriers may mitigate the effect
Examples are the British Dinantian (Mississippian) platforms.
Examples are the British Dinantian (Mississippian) platforms.