Coast Geological Society

Ventura, California

Please Join CGS on Tuesday February 18th, 2020

Jeff Kimber and Matthew Van Grinsven, California Energy Management Division (CalGEM), will present their talk:

Prehistoric marine fossils and depositional history of the Middle Miocene Round Silt Formation, Bakersfield CA


The Megalodon is the largest species of shark to have ever menaced the ocean. Their remains can be found at Sharktooth Hill, near Bakersfield, CA.  Sharktooth Hill is a world-renowned Miocene marine vertebrate locality where abundant shark teeth remain, along with a host of other clues from prehistoric California. Join us as we explore the ancient tectonic and depositional events which created this fossil rich locality over fifteen million years ago.

Jeff Kimber, CalGEM

Matthew Van Grinsven, CalGEM

Jeff's Bio:

Born, raised and educated in Bakersfield, Jeff Kimber is a local geologist currently working for state government at the California Department of Conservation: Geologic Energy Management Division. In his role, he specializes in all things pertaining to underground injection including permitting, aquifer exemptions, UIC projects, and mechanical integrity testing. He holds both a B.S. and M.S. in Geology from Cal. State University, Bakersfield where he studied the use of clay minerals as paleoclimate indicators. He is an avid musician and naturalist and makes frequent, spontaneous trips to the outdoors to hike, fish, hunt, bike, rock climb, and kayak. He and his wife of twelve years have 5 children.

Matthew's Bio:

Matthew Van Grinsven is a California local who works for the California Department of Conservation: Geologic Energy Management Division (CalGEM). In his role, he specializes in the Central Valley’s stratigraphy and CalGEM’s data analysis. He earned his B.S. from Cal. State University, Northridge and M.S. from Cal. State University, Bakersfield where he studied sedimentological data to gain insight into California’s paleoclimate and geomorphology. Matthew is an avid outdoorsman who also enjoys home improvement projects and time with his family.


The monthly CGS meeting is held at the Poinsettia Pavilion in Ventura!

Meeting Schedule:

6:00 - 7:00 PM: Social Hour - Snacks and Beverages 

7:00 - 7:30 PM: Dinner Service

7:30 - 8:00 PM: Announcements & Raffle

8:00 - 9:00 PM:  Main Presentation

CGS is proud to be affiliated with the PSAAPG