Maryland Department of Natural Resources

MGS Staff by Areas of Expertise


If you have questions specific to Maryland geology, groundwater, earthquakes, aquifer water quality, oil and natural gas, fossils, dinosaurs, minerals, and so on, please refer to list below to contact the appropriate MGS staff member. If you don't know where to start, you can contact our education specialist and he'll get you to the right person. You may call him at 410-554-5505 or send an e-mail to

A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |


Aerial photographs: Dale Shelton
Aggregate resources: David Brezinski
Appalachian geology: David Brezinski, Rebecca Kavage Adams
Appalachian plateau: David Brezinski, Rebecca Kavage Adams
Aquifer tests: Andy Staley
Arsenic: Andy Staley
Atlantic Ocean: Richard Ortt, Stephen Van Ryswick


Bathymetric maps: Stephen Van Ryswick, Richard Ortt
Bedrock geology: David Brezinski, Rebecca Kavage Adams
Blue Ridge Mountains (geology): David Brezinski, Rebecca Kavage Adams


Caves: David Brezinski, Richard Ortt
Carbon sequestration: David Brezinski, Richard Ortt
Chesapeake Bay: Richard Ortt, Stephen Van Ryswick Coal-bearing strata: David Brezinski
Coal bed methane: David Brezinski
Coastal Plain hydrogeology: Andy Staley, Heather Quinn
Continental Shelf: Richard Ortt, Stephen Van Ryswick
Core & cuttings repository: Heather Quinn


Data Preservation: Heather Quinn
Digital mapping: Heather Quinn
Dredging: Richard Ortt, Stephen Van Ryswick
Drone Surveying: Stephen Van Ryswick, Bryan Nicholson


Earthquakes: Richard Ortt
Eastern Shore geology: Heather Quinn
Eastern Shore hydrogeology: Andy Staley


Fossils: Dale Shelton
Fossil collecting: Dale Shelton, David Brezinski
Fossil identification: Dale Shelton, David Brezinski


General Maryland geology: Dale Shelton
Geochemistry: Anna Gillmor
Geologic Mapping - central & western Maryland: David Brezinski, Rebecca Kavage Adams
Geologic Mapping - Coastal Plain: Heather Quinn
Geologic Maps: Heather Quinn, Rebecca Kavage Adams
Geologic sites: Dale Shelton
Geophysical logs: Andy Staley, Heather Quinn
Groundwater: Andy Staley
Groundwater availability: Andy Staley
Groundwater contamination: Rubina Firdous
Groundwater exploration and modeling: Andy Staley
Groundwater levels: Andy Staley
Groundwater monitoring network: Andy Staley, Heather Quinn
Groundwater quality: Rubina Firdous, Johanna Gemperline


Hydraulic fracturing: David Brezinski
Hydrogeology: Andy Staley
Hydrogeologic framework: Andy Staley
Hydrology: Andy Staley


Karst: David Brezinski


Landslides: David Brezinski


Maps: Dale Shelton,
Marcellus Shale: David Brezinski
Mining: David Brezinski, Heather Quinn


Observation wells: Andy Staley, Heather Quinn
Ocean City beach replenishment: Stephen Van Ryswick, Richard Ortt
Offshore sand resources: Stephen Van Ryswick


Public information and outreach: Dale Shelton
Publications: Dale Shelton


Radium: Heather Quinn
Radon: Andy Staley
Rock collecting: Dale Shelton
Rock quarries: David Brezinski


Salt-water intrusion: Andy Staley
Sand and gravel: Heather Quinn
Seafloor Mapping: Stephen Van Ryswick
Sea-level change: Stephen Van Ryswick
Shoreline Rates of Change: Anthony Reisinger
Sinkholes: David Brezinski
Speakers-geology: Dale Shelton
Speakers-groundwater topics: Andy Staley


Tides: Stephen Van Ryswick


Well water quality: Rubina Firdous, Johanna Gemperline
Water Supply: Andy Staley
Well data: Andy Staley, Heather Quinn
Well regulations: Heather Quinn