Thursday, December 16, 2010

October 19,2010 Field Trip

The October 19, 2010 field trip took us just east of Georgetown on Route 125 to a roadside outcrop of the Cincinnatian Maysvillian stratigraphic section (picture to the right).  This particular Maysvillian Stage outcrop contained rocks from the Bellevue and Fairmount Subdivisions and is composed of inter-bedded limestone and shale that contains an abundance of fossils.  At this first outcrop, the most common fossil found was the brachiopod group with Platystrophia ponderosa the most abundantly found fossil and Hebertella occidentalis the second most common fossil found (see pictures below).  In addition, other brachiopod fossils such as Rafinesquina fossils (see picture below) were found although they were not as abundant as Platystrophia ponderosa.  Bryozoan group fossils (see picture below) were also found although they did not seem to be in as great abundance as the brachiopod fossils were.  Of course after finding so many brachiopod fossils, I was determined to try to find a trilobite, but instead, I was pleased to find a cephalopod fossil  (see picture below).


Platystrophia ponderosa



Hebertella occidentalis

Rafinesquina

 
Various Bryozoans

Cephalopod (top view)
 


Cephalopod (x-section)











No comments:

Post a Comment