GSW Spring Field Trip to Great Falls, June 6th

Dear Members of the Geological Society of Washington,

We are pleased to invite you to the Spring Geological Society of Washington Field Trip on Saturday June 6th to The Billy Goat Trail at Great Falls. The trip will be led by USGS geologists Alan Pitts, Peter Valley, Alex Gray… and any other fun folks we convince to come along.

The event will include an approximately 3- hour walking tour including the Great Falls overlook and the northern portion of the Billy Goat Trail (From the northern entrance near the Stop Gate until approximately TM-1 on the map below). The official trip will finish at TM-1 before the trail becomes more difficult, while any adventurous hikers are free to continue ahead on their own.

Please register by emailing Alan Pitts at pitts.alan@gmail.com

Trip Details:

Location: Great Falls Park, Maryland

Duration: approximately 3 hour-walking tour

Date: June 6th, 2026

Time: 9:00am to 12:00pm-ish

Meeting Point: Great Falls Tavern Visitor Center

Parking options: Parking inside the park is widely available

Safety and Trail information: Please note that the Billy Goat Trail portion of the trip will involve hiking over rugged and rocky terrain. We recommend sturdy footwear and trekking poles if balance is an issue.

Our guided trip will explore the first section of the Billy Goat Trail and turn around at the TM-1 point on the map. For any hikers who are planning to continue onward please see the information and link below from the National Park Service

The hike involves scrambling over angled rocks, boulders and climbing. Visitors in less-than-optimal health, visitors with small children, and visitors not experienced or properly outfitted should consider other trail options. The 1.7-mile hike takes most visitors 2-3 hours to complete. Along the trail are views of Mather Gorge and Potomac River. This trail can close due to fooding from the river. Link: Billy Goat Trail – Chesapeake & Ohio Canal National Historical Park (U.S. National Park Service)

Register by emailing Alan Pitts at pitts.alan@gmail.com

We look forward to seeing you!

Draft minutes from April 29th meeting (1620th GSW)

The draft minutes of our last meeting, on 29 April 2026, are attached for members to evaluate. If you have any additions or corrections please email them to our meeting secretary, Karin Lehnigk, at karin.e.lehnigk[at]nasa.gov.

GSW Meeting Wednesday, May 13th at Cosmos Club

Join us to hear from leadership in the Earth Sciences at Federal Agencies

Sarah Ryker, U.S. Geological Survey, Associate Director for Associate Director for the Geology, Energy, and Minerals Mission Area

Megan Carr, Bureau of Ocean Energy Management, Associate Director of the Strategic Resources Program

The meeting will take place at the Cosmos Club John Wesley Powell Auditorium, 2170 Florida Avenue NW, Washington D.C

Refreshments at 7:30 p.m., formal program at 8:00 p.m.

 If anyone has announcements or informal communications they would like to share with the society, please e-mail Mike Ackerson (ackersonm@si.edu) ahead of time.

GSW Meeting Wednesday, April 29th at Cosmos Club

Andrea Goltz, Carnegie Earth and Planets Laboratory – Predicting the Stability of Igneous Amphibole using Machine Learning

Supratik Roy, Johns Hopkins University – Constraining metamorphic rates in ancient orogens: insights from the Paleoproterozoic Lake Superior region (USA)

Kelsey Jenkins, Smithsonian Institution – Sensing in a Strange Land: The Fossil Record’s Story of Sensory Evolution

The meeting will take place at the Cosmos Club

John Wesley Powell Auditorium

2170 Florida Avenue NW, Washington D.C.

Refreshments at 7:30 p.m., formal program at 8:00 p.m.

 If anyone has announcements or informal communications they would like to share with the society, please e-mail Mike Ackerson (AckersonM@si.edu) ahead of time.

Draft minutes from March 25th meeting (1619th GSW)

The draft minutes of our last meeting, on 25 March 2026, are attached for members to evaluate. If you have any additions or corrections please email them to our meeting secretary, Karin Lehnigk, at karin.e.lehnigk[at]nasa.gov.

GSW Meeting Wednesday, March 25th at Carnegie Earth and Planets Laboratory

Kevin Wong, Carnegie Earth and Planets Laboratory: Continent-breaking volcanoes: magmatic rifting in Ethiopia

Sajjad Akam, Smithsonian: Bursting the Bubble with Rocks: Decoding Marine Methane Cycling Using Seafloor Rocks

Denise Buckner, NASA Goddard: From asteroid Bennu to Mars: abiotic organics and the search for life beyond Earth

Refreshments at 7:30 pm, the formal program will begin at 8:00 pm

Carnegie Institution for Science – Earth and Planets Laboratory
5241 Broad Branch Rd, NW, Washington D.C.

(free parking plentiful)

* Members outside the DMV can attend via Zoom*

Please see the email announcement for the Zoom link, Meeting ID and Passcode

Draft minutes from March 4th meeting (1618th GSW)

The draft minutes of our last meeting, on 4 March 2026, are attached for members to evaluate. If you have any additions or corrections please email them to our meeting secretary, Karin Lehnigk, at karin.e.lehnigk[at]nasa.gov.

Draft minutes from Feb 11th meeting (1617th GSW)

The draft minutes of our last meeting, on 11 February 2026, are attached for members to evaluate. If you have any additions or corrections please email them to our meeting secretary, Karin Lehnigk, at karin.e.lehnigk[at]nasa.gov.

GSW Meeting Wednesday, March 4th at Cosmos Club

Elizabeth Tomaszewski, USGS – Coal Mine Waste as a Resource: How Fundamental Geochemistry Informs Critical Mineral Recovery Potential

Joshua Rosera, USGS – What’s the point? Tracking regional orientations of magmatism through time in the Rocky Mountains

Oded Elazar, Carnegie Earth and Planets Laboratory – Metasomatic Fluids from Subducted Oceanic Crust Recorded by Potassium Isotopes in Sierra Leone Diamonds

The meeting will take place at the Cosmos Club

John Wesley Powell Auditorium

2170 Florida Avenue NW, Washington D.C.

Refreshments at 7:30 p.m., formal program at 8:00 p.m.

 If anyone has announcements or informal communications they would like to share with the society, please e-mail Mike Ackerson (AckersonM@si.edu) ahead of time.

Upcoming 2026 Spring Meetings: Mar. 25, Apr. 29, May 13

Draft minutes from Dec 3rd meeting (1616th GSW)

The draft minutes of our last meeting, on 3 December 2025, are attached for members to evaluate. If you have any additions or corrections please email them to our meeting secretary, Jessie Bersson, at BerssonJ[at]si.edu.