Category Archives: AEG

Alberene Soapstone Company Mill Field Trip

Field Trip to the Alberene Soapstone Company Mill
and Quarry in Schuyler, VA
Announcement from the BWH Section of the Association of Environmental & Engineering Geologists
Saturday, March 23, 2013 – Rendezvous at 10 AM, trip from 11 AM – 3 PM
****************************************************************
Soapstone in Central Virginia
Trip Organizers:
Drew Thomas, Peter Farley and Steve Stokowski
ABSTRACT:
Soapstone quarries have been active in Virginia for thousands of years, but the aboriginal quarries were relatively small, producing primarily only bowl and decorative objects. Industrial production for architectural, laboratory, and domestic usage uses began in the Albemarle, Nelson, and Amherst counties
in the late 1800’s. It soon centered in the mill town of Schuyler, VA, which was larger than the county seat.
At one time, the largest company employed over 2,000 people and controlled the mineral rights to over 9,000 acres.
This field trip will visit the mill of the Alberene Stone Company at the location of the original large mill in Schuyler, Virginia, and the quarry currently operated by the company (about 2 miles away).
The products currently produced at the plant include primarily slabs for counter tops and vanities, gauged pavers, flagstones and tiles for interior and exterior applications, and a variety of architectural and commercial specialty sizes. Associated sculptors also carve blocks on special order.
Four color and texture varieties of soapstone are produced. Alberene is a fine-grained, dark charcoal color stone that is very durable. Church Hill is a mottled variety of soapstone that contains residual amphibole. Climax is also a dark stone, but it contains veins of white calcite and some yellow siderite. Old
Dominion is a lighter gray variety with dark veins.
The soapstone occurs as tabular, concordant bodies in the Lynchburg Fm., as does associated serpentinite. These tabular bodies dip steeply to the southeast. The Lynchburg grades from a conglomeratic gneiss to a graphite schist. Most authors conclude that the soapstone bodies are metamorphosed and hydrothermally altered ultrabasic sills. An alternative theory founded upon the
apparently conformable field relationships is that the protoliths were ultrabasic lavas.

Sample collecting is ENCOURAGED, so bring rock hammer, sample bags, cameras

Cost: $30/person (checks or cash accepted at start of field trip, or at March 18 meeting.)
Provided: Box lunch with sodas, water, handout, and lotsa quarry time!
Must Bring/Wear: Mandatory hard-toed boots or shoes. Some hard hat and safety glasses available but bring your own so you can be styling.
Attendee Limit: 35
Box Lunch Choices:
Box lunches will consist of a sandwich, chips, pickle and cookie or brownie, with a beverage selection, including bottled water, provided by AEG-BWH. With your reservation, I need your choice of meat/vegetarian and bread:
Meat: Smoked Turkey — Roast Beef — Premium Ham — Chix Salad with Almonds and pineapple
Vegetarian: Spinach VeggieWrap: Organic wheat wrap stuffed with organic spinach, guacamole and pico, mushrooms and asiago.
Bread: White — Whole Grain Wheat — Rye
(Turkey on Whole Wheat is default if no choice made from list of above).
RESERVATIONS:
To reserve, please email Kris McCandless no later than Noon, Thursday, March 21, 2013 at aegbwhsecretary@comcast.net and give me MEAT and BREAD selections, or, VEGETARIAN

PRIMARY RENDEZVOUS POINT
Meet us in the parking lot between 9:45 and 10:15 am in the parking lot of the Stultz Center, Piedmont Community College, Charlottesville, VA.
We will gather everyone together and caravan down to the soapstone company where we will meet Peter Farley. We will leave no later than 10:15. If you are running late and do not make the rendezvous point, you may call either Steve or Kris’s cell phones for directions:

Steve Stokowski at 508-259-3536
Kris McCandless at 703-727-4374

AEG: McCalpin on paleoseismology

Joint AEG-GSA Richard Jahns Lecture one week from today (oops, it’s Tuesday now, so THIS COMING MONDAY) at George Mason University in Fairfax, VA (at the Johnson Center). The Jahns Lectures are aimed at students in the geological fields but there’s always we professionals who can pick up a thing or two at these lectures, I’ve found.

The Jahns Lecturer this year is James McCalpin, who will be discussing Paleoseismology. Check inside the attached announcement for details on Mr. McCalpin and come to GMU this coming Monday to learn about Paleoseismology! Free pizza, beverages and a cash bar will be provided.

For everyone wishing to attend, please let me know so I can get a count for the pizzas and beverages. Email Kris aegbwhsecretary@comcast.net  by Friday, close of business, March 15. Thanks

AEG: Fukushima Response Actions for US Nuclear Plants Flooding Re-Evaluations

http://www.aegweb.org SECTION MEETING: Baltimore MD – Washington DC – Harrisburg PA
Toipic: Fukushima Response Actions for US Nuclear Plants Flooding Re-Evaluations
PRESENTER: Kit Y. Ng, Bechtel Power Corporation, Frederick, MD
Kit Ng is a senior principal hydraulic and hydrology specialist and also serves as the assistant chief of Bechtel Power Corporation’s Geotechnical & Hydraulic Engineering Services Group. She has 22 years of industry experience and is the technical lead in Bechtel Power on hydrologic and hydraulic design and
modeling, specifically on flooding hazard evaluation for nuclear power facilities, design of cooling water systems, intake and outfall hydraulic design, water resource management, storm water management, site drainage, erosion & sediment controls, coastal hydrodynamics and contaminant mixing and transport modeling in both surface water and groundwater. Kit has a PhD in environmental hydraulics from the California Institute of Technology. She has served as the chair for the Computational Hydraulic Committee of ASCE/EWRI and is currently a member of the ANSI/ANS 2.8 and 2.31 standard committees on design basis flood determination for nuclear facilities and estimating extreme precipitation at nuclear facility sites. She is also participating in the new ANS 2.18 standard committee on evaluating radionuclide transport in surface water for nuclear power sites.

ABSTRACT: In response to the accident at the Fukushima Dai-ichi nuclear power plant resulting from the March 11, 2011, Great Tohoku Earthquake and subsequent tsunami, the Nuclear Regulatory Commission established a Near-term Task Force (NTTF) to review the existing regulatory process and
regulations. The NTTF concluded that, with the current regulatory approach and the resultant plant capabilities, an accident with consequences similar to the Fukushima accident is unlikely to occur in the United States. As part of the review, the task force also developed a comprehensive set of 12 recommendations that they believe are necessary to strengthen nuclear safety. These recommendations, with both short and long term elements, span across many areas from loss of electrical power to earthquakes, flooding, spent fuel pools, venting and emergency preparedness. Among them, Recommendations 2.1 and 2.3 on flooding and seismic reevaluations and walkdown were identified in September 2011 and approved by the Commission in October 2011 as actions to be implemented without unnecessary delay. This presentation will focus on the implications to the nuclear industry of Recommendation 2.1 on flooding reevaluation.

MEETING INFORMATION:
DATE: Thursday, February 21, 2013
TIME: 6:00 p.m. to 9:00 p.m.
LOCATION NEW!!
Holiday Inn
5400 Holiday Drive
Frederick, MD 21703
(At I-270 & Buckeystown Pike MD-85. Access Holiday Drive by entering Francis Scott Key Mall from MD-85, shown here on Google maps: http://goo.gl/maps/b8Pp2) If coming north on I-270, you’ll see the Holiday Inn on your right; almost opposite the Hampton Inn.
COST (dinner & mtg):
Members: $30
Non-members: $35 (If you become a member before the day of the meeting, the charge will be $30)
Students: $20
MEETING SCHEDULE:
6:00 to 7:00 pm Social, Networking, Cash Bar (IS BACK!) and Registration
7:00 to 8:00 pm Dinner
8:00 to 8:30 pm Presentation
8:30 to ? pm Questions, Closing Statements

 

RESERVATIONS:
To reserve a seat, please email Kris McCandless No Later Than 10:00 AM Monday, February 18, 2013 at aegbwhsecretary@comcast.net – No-shows will be invoiced!

Save the Dates:
March 19: Richard Jahns Lecturer James McCalpin (location TBD, probably George MasonUniversity)
March 23: Saturday FIELD TRIP to Alberene Soapstone Company, Schuyler, Nelson County, VA (details to follow)
April 18: Matt Morris, Gannett Fleming and AEG President. “The History and Progression of Rock Slope Stabilization for Menoher Boulevard (aka Easy Grade Highway or S.R. 271, Section 13), Cambria County, Pennsylvania”
May 16: TBD

AEG: Fracking and fluid-induced earthquakes

Notice of Meeting
Announcement from the BWH Section of the
Association of Environmental &
Engineering Geologists
Date: Thursday, Jan. 17, 2013
http://www.aegweb.org
SECTION MEETING
Baltimore MD – Washington DC – Harrisburg PA
Toipic: Earthquakes Induced by Fluid Injection
PRESENTER: William (Bill) Leith, Ph.D., US Geological Survey, Reston, VA
Bill Leith is the Senior Science Advisor for Earthquake and Geologic Hazards at USGS. In this position, he
oversees the Earthquake Hazards, Geomagnetism, and Global Seismographic Network (GSN) Programs.
Leith joined the USGS in 1986, after receiving a doctoral degree in seismology and geology from Columbia
University, and a bachelor’s degree from the University of California at Berkeley. He served USGS as Chief
of the USGS Special Geologic Studies Group from 1990–2001, as Senior Technical Advisor to the Assistant
Secretary of State for Verification and Compliance, from 2001–2003, as the Coordinator of the Advanced
National Seismic System from 2003–2012, and as USGS Acting Associate Director in 2010–2011.
In recent years, as Associate Coordinator of the Earthquake Hazards, Geomagnetism, and GSN Programs,
Leith has led the development of the Advanced National Seismic System and the completion of the GSN.
Leith has over 100 publications in the areas of seismology, geology, engineering geology, tectonics, and the
applications of these subjects to earthquake safety, response and engineering, as well as to nuclear
weapons testing and test monitoring, treaty verification and compliance assessments, and other military and
national security interests.
ABSTRACT: To produce natural gas from shale formations, it is necessary to increase the
interconnectedness of the pore space (permeability) so that the gas can flow through the rock mass and be
extracted through production wells. This is usually done by hydraulic fracturing (“fracking”). In addition to
natural gas, fracking fluids and formation waters are returned to the surface. This wastewater is often
disposed of by injection into deep wells. The injection of wastewater deep into the subsurface can cause
earthquakes that are large enough to be felt and may cause damage. Only in very rare cases does fracking
cause small earthquakes, but they are almost always too small to be a safety concern. Of more than
150,000 Class II injection wells in the United States, roughly 40,000 are waste fluid disposal wells from oil
and gas operations. Only a small fraction of these disposal wells have induced earthquakes that are large
enough to be of concern to the public. Of the case histories for which there is a scientific consensus that an
injection operation induced earthquakes, the largest are just above magnitude 5. USGS scientists have
investigated a recent sharp increase in the number of magnitude 3 and larger earthquakes in the
midcontinent of the United States. These earthquakes are large enough to be felt by many people but are
small enough that they rarely cause damage. The average number of earthquakes occurring per year of
M3 or greater increased starting in 2001, culminating in 2008-2011 with a six-fold increase over 20th
century levels. Nearly half of these earthquakes are occurring in areas where hydraulic fracturing, and
hence wastewater disposal, is known to be occurring.

MEETING INFORMATION:
DATE: Thursday, January 3, 2013
TIME: 6:30 p.m. to 8:30 p.m.
LOCATION and COST:
Hampton Inn (conference room, TBD)
5311 Buckeystown Pike
Frederick, MD 21704
(At I-270 & Buckeystown Pike MD-85)
COST (dinner & mtg):
Members and non-members: $30
Students: $20
MEETING SCHEDULE:
6:30 to 7 p.m. Social and Registration
7 to 7:45 p.m. Dinner
7:45 to 8:30 p.m. Presentation
8:30 – ? p.m. Questions, Closing Statements
RESERVATIONS:
To reserve a seat, please email Kris McCandless by close of business Tuesday, January 15,
2013 at aegbwhsecretary@comcast.net

AEG Christmas and Holiday Party

“Holiday and Christmas Party”
Announcement from the BWH Section of the
Association of Environmental &
Engineering Geologists
Date: Thursday, Dec. 20, 2012

Join your AEG-­‐BWH friends for a night of good laughs, great company, cool gifts, and yummy food. Then take off on a transcontinental sleigh ride of geological discovery as you make a new friend, Callan Bentley, who will take us from Giant City in Illinois to the Kansas chalk and then to the towering Rockies and the fossils they hide. North America’s geologic wonders will be shared in Callan’s amazing “Two months of rock and road” presentation. Callan Bentley is an Assistant Professor of Geology at Northern Virginia Community College in Annandale. He is the author of the popular geology blog Mountain Beltway. He has won multiple awards and is the 2012 recipient of the Chancellor’s Award for Teaching Excellence. Prior geologic knowledge is NOT REQUIRED to attend this party: all will be amused. We also want to meet your spouses and significant, or even casual, others. Besides Callan’s exciting and scenic talk, there will be door prizes and goodies to be won throughout this night of geologic discovery.

MEETING INFORMATION:
DATE: Thursday, December 20, 2012
TIME: 6:30 p.m. to 10 p.m.
LOCATION and COST:
Hampton Inn
5311 Buckeystown Pike
Frederick, MD 21704
(At I-270 & Buckeystown Pike MD-85)
COST per Person: $35
RESERVATIONS:
To reserve a seat, please email Kris McCandless at AEGBWHsecretary@comcast.net

2012-­14
AEG-­BWH
OFFICERS
Chair: Ashley Hogan, GeoConcepts Engineering, Inc.,
(703) 726-8030, ahogan@geoconcepts-eng.com
Vice Chair: Steve Stokowski, Stone Products Consultants.,
(508) 259-3536, Ettringite@aol.com
Treasurer: Drew Thomas, ECS Ltd, (703) 471-8400,
dthomas@ECSLimited.com
Secretary: Kris McCandless, Total Environmental Concepts,
(703) 727-4374, aegbwhsecretary@comcast.net

AEG November mtg: metamorphic rocks of the Piedmont in Montgomery County, MD

The Baltimore-Washington-Harrisburg Section of AEG is holding our November meeting on Thursday, the 15th (NEXT THURSDAY!!) at the Pastimes Cafe (within the Hampton Inn) up in Frederick, MD, with happy hour and networking starting at 6 pm, dinner at 7, and presentation at 8 pm.

AEG-BWH member, Professional Geologist, and Professional Engineer, Paul Headland, will refresh and renew our knowledge of the local metamorphic rocks of the Piedmont in Montgomery County, Maryland for a 5-Mile water tunnel project. This is pure Engineering Geology – who doesn’t love a good tunneling project, right? Tell your friends to join us next Thursday night.

Save the date: December 20 at Pastimes/Hampton for AEG-BWH’s First (in a long time) Christmas Party.

AEG meeting: Nitrates in Rural Groundwater

Notice of Meeting
Announcement from the BWH Section of the
Association of Environmental &
Engineering Geologists
Date: Thursday, October 18, 2012
http://www.aegweb.org
SECTION MEETING
Baltimore MD – Washington DC – Harrisburg PA
Topic: Nitrates in Rural Groundwater Supply Wells Not from Farming:
An Unexpected Finding Based on Forensic Hydrogeology
PRESENTER: Mark W. Eisner, P.G., President, Advanced Land & Water, Inc.
ABSTRACT: Sharptown is located in an agriculturally dominated portion of the Delmarva Peninsula and is supplied by four wells. Groundwater quality compliance samples have reflected elevated nitrate concentrations for years. Non-point agricultural sources were thought to be the source of the nitrates, but detailed study as a component of an updated Source Water Protection Plan assessment now has revealed a differing and surprising interpretation. For our source water assessment work, we analyzed available water quality data via End-Member Mixing Analysis. EMMA is a common surface water investigative technique; its use to interpret groundwater contaminant sources and contributions is less common. We used chloride and nitrate as tracers,
based on the limited compliance data available. The lack of known septic systems near the wellfield, seasonality of nitrate concentration fluctuations and historic reports of sewer system leaks suggest that the nitrate may originate more from a local sewer system leak than from historic and regional farming. Work is ongoing and we are sampling for indicators of detergents and
domestic sewage. If the sewer system leak suggested by these findings is confirmed, its repair may offer a more economical means of nitrate reduction than treatment and a more assured means than encouraging changes in long-standing local agricultural practices.
Mark is an enthusiastic, lively speaker, presenting the latest groundwater hydrogeological analysis and testing tools available to hydrogeologists and environmental scientists.

MEETING INFORMATION:
DATE: Thursday, October 18, 2012
TIME: 6 p.m. to 9 p.m.
LOCATION and COST:
Pastimes Café (inside Hampton Inn)
5311 Buckeystown Pike
Frederick, MD 21704
(At I-270 & Buckeystown Pike MD-85)
COST (dinner & mtg):
Members and non-members: $30
Students: $20
MEETING SCHEDULE:
6 p.m. to 7 p.m. Social Hour and Section Business
7 p.m. to 8 p.m. Dinner
8 p.m. Presentation
9 p.m. Closing Statements
RESERVATIONS:
To reserve a seat, please email Kris McCandless no later than (NLT) NOON Wednesday, October 17, 2012 at aegbwhsecretary@comcast.net .

AEG field trip: Back to the Tonian!

Notice of Field Trip
At the Lehigh Cement Mill & Quarry,
Union Bridge, MD
Announcement from the BWH Section of the
Association of Environmental & Engineering Geologists
Saturday, October 27, 2012
10 AM – 3 PM
****************************************************************
A Trip Back to the Tonian: 960 Ma Volcanism and Microbialites
in the Westminster Terrane of Maryland
by:
Liz Graybill and Bob Ganis
ABSTRACT: The Sams Creek/Wakefield Complex in the Westminster Terrain of Maryland includes highcalcium,
low-magnesium limestone exploited in the vicinity of Union Bridge for cement production.
Stratigraphic, geochemical, petrographic and radiometric dating analyses of new exposures revealed an
elegant geologic history.
The stratigraphic studies showed that the interlayered carbonates, metabasalts, phyllites, and rare
sandstone channels were contemporaneously deposited. Continuous deposition of carbonate rocks
containing biogenic microbialite layers which also contain non-carbonate ash falls, lava flows, and
pyroclastic debris. Both basaltic and andesitic rocks erupted.
New zircon dates reveal a 950-970 Ma age for the sequence. These were acquired from three
units: basaltic greenstone representing the floor of the carbonate buildup, andesitic meta-ash (phyllite)
layers within the carbonate rocks, and a quartz sandstone channel within the carbonate sequence. The
metabasalt preserved 1036-1269 Ma zoned Grenville xenocrysts. The meta-ash hosted two zircon
populations: 1016-1321 Ma zoned plutonic sourced xenocrysts, and unzoned 950-970 Ma eruptive ages.
The sandstone channel preserved prismatic (944-1553 Ma) and rounded (969-1537 Ma) zircons. The
zircon populations came from both Grenville aged rocks, with zoned zircons, and from contemporaneous
volcanics, which contained unzoned zircons. No zircons younger than 944 Ma were found.
We propose that these rocks formed when Rodinia was breaking up following Grenville orogenesis,
with the development of a rift feature at ~960 Ma. The trace element composition of greenstones resembles
within-plate through plate-boundary-enriched, mid-ocean ridge basalt (EMORB), possibly tracking the
opening of a rift basin. In addition, the chemical composition of the Sams Creek meta-volcanics is similar to
other known rift volcanics. Prior hypotheses that the Sams Creek volcanics were either Catoctin related (at
~570 Ma) or were formed as Cambro-Ordovician oceanic islands with atolls (Wakefield carbonate) are not
supported by the age dates and stratigraphic relationships.
Google Map of Union Bridge & Field Trip: http://goo.gl/maps/pP5Rr
Page 1 of 2
Page 2 of 2
Sample Collecting is ENCOURAGED, so bring rock hammer, sample bags, markers,
cameras
Cost: RSVP required because we need to print a guidebooks and purchase food and
beverages. $45/person (checks or cash accepted at start of field trip, or at the October
18 meeting.) Email Kris your RSVP & lunch choice. aegbwhsecretary@comcast.net
Provided: Handout/guidebook, box lunch with sodas & water, van to visit the stops,
rock samples!
Must Bring/Wear: Mandatory hard-toed boots or shoes. Some hard hat and safety
glasses available, but bring your own so you can be styling.
Attendee Limit: 48
Box Lunch Choices:
􀀀 Ham (applewood smoked) and provolone cheese garnished with lettuce, tomato, and mayo
􀀀 Turkey breast, topped with lettuce, tomato, alfalfa sprouts, and mayo
􀀀 Roast beef (medium rare, shaved), topped with mayo, lettuce, and tomato (default if none checked!!!)
􀀀 Vegetarian – Layers of provolone cheese separated by real avocado spread, alfalfa sprouts, sliced
cucumber, lettuce, tomato, and mayo
All are an 8” homemade French bread sub topped with shredded lettuce, fresh tomatoes, and mayo. Also
includes chips, cookie, pickle.
(Turkey is default if no choice made from list of above).
RESERVATIONS:
To reserve, please email Kris McCandless no later than Noon, Wednesday, October 24, 2012 at
aegbwhsecretary@comcast.net and please select one of the sandwich choices above.
(Turkey is default if no choice made from list of above).
Town of Union Bridge is in Carroll County, Maryland, 21791
Meet at the Main Office of the Lehigh Cement Company, paved parking is provided.
Plant Entrance: Lat
39⁰
33.518”
N
;
Long
77⁰
10.019
W
Main Office: Lat
39⁰
33.690”
N
;
Long
77⁰
10.245
W
2012-14 AEG-BWH OFFICERS
Chair: Ashley Hogan, GeoConcepts Engineering, Inc.,
(703) 726-8030, ahogan@geoconcepts-eng.com
Vice Chair: Steve Stokowski, RJ Lee Group, Inc.,
(508) 259-3536, sstokowski@rjlg.com
Treasurer: Drew Thomas, ECS Ltd, (703) 471-8400,
dthomas@ECSLimited.com
Secretary: Kris McCandless, Total Environmental Concepts,
(703) 727-4374, aegbwhsecretary@comcast.net

AEG: Virginia earthquakes

The Baltimore-Washington-Harrisburg Section of AEG is holding our September meeting on Thursday, the 27th at the Pastimes Cafe (within the Hampton Inn) up in Frederick, MD, with happy hour and networking starting at 6 pm, dinner at 7, and presentation at 8 pm.

Our speaker is BWH’s own David Fenster, who will present the findings from Bechtel’s field investigations of the Louisa County, Virginia-centered earthquakes. The title of his presentation is “Post-Earthquake Investigation in the Eastern US”.

For your planning purposes, on page 2 of the attached announcement is the agenda for the remainder of 2012…hint, hint…keep Saturday, October 27 open on your calendar for the planned field trip to Union Bridge Quarry in Maryland and keep December 20 open for the BWH Christmas Party, a first in a very long time at BWH!

Look forward to seeing everyone this month on SEPTEMBER 27, 2012 for our first meeting of the fall. You may respond directly to this email if you are planning to attend.

New Virginia Earthquake Session at Seismological Society of America meeting

Central Virginia Seismic Zone
New Earthquake Session at the Seismological Society of America
Eastern Section Meeting, October 16‐18, 2011
AEG members who practice in the Virginia region and Eastern Seaboard will be interested in a special seismology session that has been added to the annual meeting of the Eastern Section of the Seismological Society of America.
The abstract submission deadline for the SSA Eastern Section Meeting has been extended to September 16 to allow participants to plan presentations for the newly formed special session on last month’s Virginia earthquake (see session description below).
The Eastern Section Annual Meeting of the Seismological Society of America will be held 1618 October 2011 in Little Rock, Arkansas. Discounted Early Bird Registration is available through September 19. Online registration at the regular rate continues through October 7. Onsite registration is also available. The new session description is below:
The Mw5.8 Central Virginia Seismic Zone Earthquake of August 23, 2011
On 2011 August 23 at 17:51:04 UTC a large earthquake (Mw5.8) struck in the Central Virginia seismic zone and was felt from Maine to Georgia along the Eastern Seaboard and west to Chicago and western Tennessee. Significant damage was reported in Washington D.C. ( 135 km away) and minor damage in Baltimore (200 km).
The USGS tallied about 142,000 felt reports submitted to the DYFI internet community intensity system, making it the most widely felt earthquake since the web‐site began, and strongly indicating that more people felt this quake than any other in U.S. history.
In the weeks following the main shock, numerous aftershocks occurred with one as large as M4.5 and several in the M3 to M2 range. Since 1774, the Virginia seismic zone has produced many small earthquakes and suffered damage from several infrequent larger earthquakes. The largest damaging earthquake (magnitude 4.8) in the seismic zone occurred in 1875.
In the days following the main shock forty‐five portable seismic stations were deployed by several organizations making this one of the best‐recorded aftershock sequences in the eastern U.S. The Seismological Society of America solicits scientific contributions from all aspects of earthquake studies on the recent large earthquake in the Virginia seismic zone including: strong ground motion, aftershock production, earthquake re‐location, attenuation, site amplification, building damage, ground failure, and paleo‐seismology. AEG members are welcome to present papers on seismically induced landslides, liquefaction, permanent ground deformation, and seismic safety planning.
The SSA Conveners are: Daniel McNamara, Steve Horton and Rob Williams. For further information go to the main website of the Seismological Society of America: http://www.seismosoc.org

The abstracts of these papers will be published in future issues of Seismological Research Letters and the Bulletin of the Seismological Society of America. AEG members should check these journals of our sister societies for further updates in the months ahead. There will also be special sessions on the Central Virginia Seismic Zone at the annual Fall Meeting of the American Geophysical Union in San Francisco, December 5‐9, 2011.

http://sites.agu.org/fallmeeting/

EERI Clearinghouse The Earthquake Engineering Research Institute has established a clearinghouse at this address: http://www.eqclearinghouse.org/2011‐08‐23‐virginia/ EERI will also publish papers on this earthquake in its journal, Earthquake Spectra, and there will be a timely summary report in its “Learning from Earthquakes” Series that is financed by the National Science Foundation.
Reported 2 Sept 2011 by Robert H. Sydnor, LMAEG, LMSSA, LMAGU, MEERI