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PHOTOMICROGRAPH

Red ball iconMANSON IMPACT STRUCTURE

Pseudocod  

PHOTOMICROGRAPH

"Pseudocod"

Recrystallized Quartz Grain
in Crystalline-Clast Breccia
with Melt Matrix

M-1 Core - 377 feet

 

Dark brown matrix is melt-rock.
This is probably a quartz grain melted by the impact and stretched to form a boudin before recrystallization. The name "pseudocod" comes from the feature's similar appearance to fossil ostracods

field 1.3 x 0.84 mm
plane-polarized light

 
   
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