Skip to main content

Interpretation of authigenic vs. allogenic green peloids of ferric clay in the Proterozoic Penganga Group, southern India

Buy Article:

$12.15 plus tax (Refund Policy)

Ferric illite in the Neoproterozoic Penganga Group, southern India, occurs in a lenticular unit of reworked arkoses conformably enclosed in carbonate mudstones, deposited in a shelf-margin carbonate slope setting influenced by deep marine sediment gravity flows. The structures and textures of the arkoses suggest emplacement by fine-grained debris flows and deposition in channels incised into the carbonate slope.

Ferric illite is sparse in the arkoses and has small concentrations and grainsizes within the same size fraction of the associated detritus, uniform chemical composition and an association with reworked facies. It consists predominantly of granular grains that are mostly sorted spherical, ovoid, capsule-shaped and vermicular peloids; many broken and micaceous. These attributes provide a comprehensive framework for suggesting an allogenic origin for the ferric illite previously interpreted as authigenic. The methodology adopted here is a useful approach in the interpretation of in situ vs. reworked origins of glauconitic minerals.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Data/Media
No Metrics


Document Type: Research Article

Publication date: 2007-12-01

More about this publication?
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more