Author Archives: Callan Bentley

AWG social on Thursday

Greetings DMV AWG Members & Friends!
Thank you to all of our volunteers for the October Field Trips! The budding geoscientists from 4 to 9 years old loved being able to ask questions to professional experienced geoscientists! Attached is a clip from the NOAA Field Trip where the young aspiring geoscientists assisted in launching a weather balloon (we don’t currently have permission to post this on social media and we ask that you also refrain from sharing this on any social media platform)! After the launch we got to see the real-time data collection plotting on the computer screens inside the station, which demonstrated pressure changes in the atmosphere, an idea that was discussed earlier in the field trip and demonstrated through simple experiments.
WHAT: DMV AWG Social Hour and an opportunity to help shape future events for our chapter
WHERE: Wunder Garten located at 1101 1st Street NE (one block away from the NOMA Gallaudet U Metro stop on the Red Line)
WHEN: This Thursday, NOV 15th from 6-8pm 
WHO: You and any geoscientist in the DMV area that would like to participate
We hope to see you Thursday!
The Officers



GSW 1535: Deep carbon, making continental crust, Virginia resources


Michael Walter, Carnegie Institution – Geophysical Lab
The Fate of Deeply Subducted Carbon

Jesse Reimink, Carnegie Institution – DTM
Probing the earliest continental crust-formation events known on Earth

Lorrie Coiner, Virginia DMME, Department of Geology and Mineral Resources
The State of the Commonwealth:  Virginia’s Mineral and Energy Resources


Meeting flyer to post and share

Refreshments at 7:30 p.m.
Formal program at 8:00 p.m.
John Wesley Powell Auditorium
2170 Florida Avenue NW, Washington, DC

UMD: Woods Hole’s Fauria on submarine volcanism

2018 University of Maryland Geology Colloquium Series

Friday, November 2nd 2018 at 3:00 pm
in PLS 1130, UMD College Park

Kristen Fauria
Woods Hole Oceanographic Institution

Submarine volcanic eruptions: why some rocks float and others sink

The 2012 eruption of Havre submarine volcano was the largest submarine pyroclast-producing eruption in modern history. Most of the material from the eruption formed a > 1.2 km3 pumice raft that floated across the South Pacific for more than a year. Rafts of floating pumice spread volcanic material far from its source and are important for the dispersal of marine organisms. Here we explore how pumice get to the surface from deep submarine eruptions, why some – but not all – pumice stay afloat in rafts, and how high porosities and phase changes lead to complex behaviors. By understanding the clast-scale dynamics of pumice in water, we can better interpret deposits and understand the fate of volcanic material in the ocean.

GSW 1534: Mercury, mineral dehydration, sloths

Meeting Number 1534

John Wesley Powell Auditorium, Cosmos Club, 2170 Florida Ave NW

Wednesday, October 24, 2018; Refreshments 7:30 pm; Meeting 8:00 pm


PETER VAN KEKEN, Carnegie Institution Linking metamorphic dehydration reactions with subduction zone earthquakes.
ROSEMARY KILLEN, NASA Mercury’s exosphere.
RYAN HAUPT, Smithsonian Institution Applying paleontological proxy methods to modern sloths: What can the odd mammal out tell us about their even odder fossil relatives?

Talks will be 20 minutes w/questions to follow. 

Future Meetings 2018: Nov 7; Dec 5 (Presidential address & annual meeting).
Know someone who would enjoy GSW? Consider inviting a colleague or friend to the meeting.
Minutes of the previous meeting are posted on the GSW website for review by members.
GSW website: <>

PGS: Krohn on land seismic data complexity

SEG Honorary Lecturer Dr. Christine Krohn will speak on:

The complexity just below our feet and the implications for the fidelity of land seismic data

Dr. Krohn will be speaking at the Potomac Geophysical Society meeting on November 8th at the Tysons Corner DoubleTree hotel.

Meeting Location:

  • DoubleTree by Hilton McLean Tysons
  • 1960 Chain Bridge Road, McLean, VA 22102
  • Hotel is located within one-half mile of the Tysons Corner Metro station, near I-495 and Rt. 123, and has free parking garage available
  • Our private meeting room is located at the back of the Harvest Café restaurant on the second floor of the hotel
  • Social time is typically held in O’Malley’s Pub on the first floor of the hotel


  • Members and guests may attend any presentation after dinner for no charge
  • The optional three course dinner cost is discounted to $30 for members in good standing (having paid dues) and for students, is $40 for non-members, and is inclusive of iced tea, coffee, tax and gratuity
  • Alcoholic beverages may be purchased in the private meeting room on a cash basis
  • Dinner service begins at 7 PM and we estimate that the presentation begins at about 8:15 PM. For attendees who arrive early, social time begins about 6 PM
  • To RSVP, please write to

Gene Likens: inaugural Helz lecture

The University of Maryland’s Department of Geology hosts its inaugural Helz Lecture on October 18th, and we hope that you can join us.  The Helz Lecture is a new lecture series graciously supported by Drs. George and Rosalind Helz.
Our first speaker will be Dr. Gene Likens.  Dr. Likens and his team were the first to discover the regional effects of acid rain in North America.  The title of the talk will be:  “Acid Rain:  A long and unfinished journey from discovery to political action.”  Dr. Likens is a member of the National Academy of Science and is a recipient of the National Medal of Science among many other honors.  In addition to his research, he also currently teaches a course in science ethics at the University of Connecticut and enjoys interacting with students.
There will be a catered reception prior to the Helz Lecture at 5 pm in the new Edward St. John Learning and Teaching Center, 2nd Floor Lounge.  The lecture will begin at 5:30 pm in Edward St. John Learning and Teaching Center Room 2204.  A link providing further details can be found at:
Everyone is invited to the inaugural Helz Lecture, and it is open to the public.  It should be interesting and fun.  Please feel free to share widely with your students, classes, colleagues, and friends.

October 17, 2019 Paleontological Society of Washington meeting

The Paleontological Society of Washington

7:00 pm, Wednesday, October 17

National Museum of Natural History, Constitution Ave. entrance

From Filter-Feeding Plesiosaurs to Miocene Megalodon (a double-header)

Stephen Godfrey

Curator of Paleontology, Calvert Marine Museum, Solomons, MD

I will first describe the aristonectine elasmosaur Morturneria seymourensis from the upper Maastrichtian of Seymour Island, Antarctica. The cranial anatomy of Morturneria is derived relative to all other plesiosaurs, possessing a novel suite of dental and oral cavity adaptions. It is thought that this highly derived suite of adaptations is convergent with extant gray whales and archaic mysticetes and that it functioned similarly in sieve feeding following suction. The second half of the presentation will focus on trophic interactions between Neogene cetaceans and the mega-tooth shark Carcharocles megalodon (Otodontidae). Trophic interactions between this apex Neogene marine predator and contemporary cetaceans, such as Carcharocles-bitten cetacean bone, will be reviewed

Non-Smithsonian visitors will be escorted from the Constitution Ave. entrance of the NMNH to the Q?rius theatre at 6:50 and 6:55 p.m. Society members will host the speaker for dinner at the Elephant & Castle (1201 Pennsylvania Ave.) prior to the meeting. Members may meet at the restaurant or inside the Constitution Ave. entrance of the NMNH at 5:00 and walk to the restaurant as a group. Parking is available in the west side parking lot of the NMNH.