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Depositional Model for Unit G

Red ball iconTHE MIDCONTINENT RIFT SYSTEM IN IOWA

 

 

Depositional Model for
Unit G


by R.R. Anderson

 

Continuing erosion of the rising Iowa Horst began to unroof the coarser, quartz-rich Unit B and mafic volcanic rocks. Unit G displays increasing grain size and the highest volcanic rock fragment content of the Eischeid well clastic rocks.    
  return to Stratigraphy of Unit G