AEG Dinner Meeting about the Potomac-Raritan-Magothy Aquifer

  • 16 Nov 2017
  • 6:00 PM - 10:00 PM
  • 60 Cottontail Lane, Somerset, NJ 08873


  • Payment is accepted at the door via cash, check, or credit card. $35 for AEG members / $45 for non-members / $5 for students.

Registration is closed


“A Geologic Perspective on the Potomac-Raritan-Magothy Aquifer System”
Thursday, November 16, 2017

At the Clarion Hotel in Somerset, New Jersey

Presented by
Peter Sugarman, New Jersey Geological and Water Survey 


Social Hour 6:00 pm – 6:45 pm    /    Dinner 6:45 pm – 7:45 pm      
Presentation begins at 8:00 pm


Clarion Hotel     /     60 Cottontail Lane, Somerset, NJ 08873     /     (732) 560-9880


End of Business, Wednesday, November 16, 2017.  A timely RSVP is appreciated!
If RSVPing for more than one attendee, please provide email addresses for each individual.
If you have any dietary restrictions, please notify us when you register.


$35 for AEG members     /     $45 non-members     /     $5 for students with RSVP 
 Non-members always welcome!  Pay at the door by check or cash only. 
Make check payable to


One professional development hour (pdh) for continuing education credit (CEC) will be awarded for attending the presentation. 
SRPLB Approval for One Technical CEC will be applied for.


This meeting is sponsored by

The Cretaceous Potomac, Raritan and Magothy Formations form an aquifer system composed of interbedded layers of quartz sand, silt, clay, and lesser gravel. The aquifer system is the most heavily pumped in New Jersey and subdivided into Lower, Middle, and Upper aquifers separated by confining beds.  Results from continuous coreholes drilled at Fort Mott, Medford, Bass River, Sea Girt, and Sandy Hook, New Jersey as part of Offshore Drilling Program Leg 174AX have provided detailed stratigraphic sections of these formations to improve our understanding of their age, depositional environment, thickness, and lateral extent. The Potomac Formation, subdivided into units (from oldest to youngest) I, II, and III based on pollen zones, were deposited in fluvial and delta-plain deposits that formed thin-to-thick sand aquifers/reservoirs separated by thick mud confining units that comprise critical aquifers updip and potential storage reservoirs for carbon sequestration downdip (>2500 ft below land surface). The Potomac is correlative with the lower and middle aquifers.  The Raritan and its downdip facies assigned to the Bass River Formation is dominantly a marginal marine clay-silt deposit that forms a major confining unit.  Previous correlation of the middle aquifer with the Farrington aquifer is questionable, as results from Sea Girt and Bass River indicate the Farrington correlates with the Potomac unit III, suggesting correlation of the Upper aquifer with major sand bodies in the lower part of the Magothy Formation.  The Magothy Formation is composed of six members defined in outcrop with depositional environments ranging from fluvial to deltaic.  We correlate the members over 30 km to the Sea Girt and Sandy Hook boreholes where they also consist of fluvial to deltaic environments. The widespread distribution of Magothy facies suggest that they were deposited by at least one, and possible two major river systems.  

Peter Sugarman is a research scientist at the New Jersey Geological and Water Survey (NJGWS).  His research over the past 30 years has focused on the stratigraphy of the New Jersey coastal plain (NJCP) where he has served as co-chief scientist on 10 deep coreholes and published numerous bedrock geologic maps.  His work also involves the integration of geological formations, sequences, and aquifers in the NJCP, geologic controls on radon formation in the NJCP, and documentation of sea-level rise over the past 5,000 years from records collected along the New Jersey coast.  Peter previously headed up the NJGWS’s involvement in the U.S. Department of Energy’s Midwest Regional Carbon Sequestration Partnership.

Peter is also an Adjunct Professor of Geology at Rutgers University since 1994, where he teaches courses in physical and environmental geology.




AEG NY-P’s November 2017 Meeting is sponsored by:


Princeton Geoscience, Inc. specializes in characterizing the subsurface. Established in 2000, we have helped to solve problems in a wide range of geologic settings. We provide geophysical logging services to aid geologists, engineers, drillers and other practitioners understand critical subsurface conditions important to decision-making and design at their project sites. We offer a full suite of borehole geophysical parameters and can assist with site-wide interpretation and conceptual model development to support achievement of your project objectives. We own and operate the latest generation of equipment to expertly assess the subsurface. This includes the OBI40-2G optical televiewer, ABI40-2G acoustic televiewer and the heat-pulse flow meter incorporating latest design improvements. The result of 20 years of development, these tools provide unparalleled performance and high-quality data. Our technical staff possess an average of 20+ years of experience and include Professional Geologists, Professional Engineers, Licensed Site Remediation Professionals and highly trained field technicians. We are enthusiastic about our work and greatly value our customers and the trust they place in us. Over the years, through commitment to excellence, technical advancement and sound project management, we have developed a reputation for consistent, high-value service. 



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