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........October 21th.... Did drainage from glacial Lake Agassiz cause abrupt climate change at the end of the last ice age?  
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October 21st PGS Meeting - Did drainage from glacial Lake Agassiz cause abrupt climate change at the end of the last ice age?

Glacial Lake Agassiz was an immense proglacial lake that evolved over a span of 6000 years, extending from west-central Minnesota to Hudson Bay in Canada. Meltwater and rivers attempting to drain to Hudson Bay were dammed by the Laurentide Ice Sheet receding to the north. The dammed water formed Lake Agassiz, which drained through outlets cut across sub-continental drainage divides. Meltwater was routed to the Gulf of Mexico, the North Atlantic and to the Arctic Ocean throughout the lakes history. It has long been proposed that sudden diversion of meltwater routing, accompanied by rapid drops in lake level, altered thermohaline circulation in the North Atlantic to cause the global, Younger Dryas cold period between 12.9 - 11.6 thousand years ago. Selected data collected over the past 25 years will be summarized to evaluate how the meltwater drainage history reconciles with periods of abrupt climate change to answer the question: did drainage from glacial Lake Agassiz cause abrupt climate change at the end of the last ice age?

See our speaker's abstract for more information.

PGS 2015 "So You Want to be a Geologist Workshop"

If you attended the March 28, PGS workshop, "So You Want to be a Geologist", and would like to have a copy of the slide presentation, just click here. There is also available an attachment on career advice from G.W. Hobbs, P.G.

April 15th AEG/ASCE-GI/PGS Student Night

Thanks to all the students who presented their projects at 13th Annual Student Night. The Pittsburgh Geological Society, the Association of Engineering Geologists, and the American Society of Civil Engineers-Geotechnical Division are privileged to have presented the following students:

AEG Award Winners
First Place: Oral Presentation ($100)
Sebastian Dirringer (Kent)
"Landslide Inventory and Susceptibility Mapping of Driftcreek Watershed, Lincoln County, Oregon, Using LiDAR Data"

Second Place: Poster Presentation ($50)
S. Lindsay Poluga (Kent)
"Rock Mass Characterization and Stability Evaluation of Mount Rushmore National Memorial, Keystone, South Dakota"

Third Place: Poster Presentation ($50)
Matthew Marinelli (Kent)
"Landslide Inventory and Susceptibility of West Prong Little Pigeon River Watershed, Great Smoky Mountains National Park"

ASCE-GI Award Winners
First Place: Oral Presentation ($100)
Dominic Decesaris (CalU), "Impacts to Water Quality, Tenmile Creek, Washington County, PA"

Second Place: Poster Presentation ($50)
Carl J. Jacklitch (Kent)
"A Geotechnical Investigation of the 2013 Fatal Rockfall in Rockville, Utah"

Third Place: Poster Presentation ($50)
Dylan J. McKevitt (Cedarville University)
"Glacial Till Prospecting in Southwest Ohio: Implications for Improved Sampling"

PGS Award Winners
First Place: Oral Presentation ($100)
Adam Rak (Pitt)
"Using sequential kinematic and thermochronometric modeling to temporally and spatially link thrust belt exhumation with basin development in the Bolivian fold-thrust-belt-foreland basin system"

Second Place: Poster Presentation ($50)
Matthew V. Magill (IUP)
"Kinematic Indicators of Shear and the role of Volcanic Pressurization at the Heart Mountain Detachment"

Third Place: Poster Presentation ($50)
Julia Yeakley (Kent)
"Influence of Salt Tectonics on Seafloor Morphology from Algeria to Sardinia"

Additional Poster presentations
Steven Hensel (CalU)
"Bank Erosion and Stability monitoring of Pike Run and its Tributaries, Washington County, PA"

Jorie Krob (Cedarville Univ.)
"Determining Provenance of Glacial Material in Southwestern Ohio"

Samuel Rice (Cedarville University)
"2014-15 Assessment of Lake Depth in Cedar Lake: A Comparison to the 2012 Study"

Trevor Dujmic (CalU)
"Seasonal Conductivity Changes in the Washington Formation Aquifer in Washington, Pennsylvania"

Tyler Dix (Cedarville University)
"Buildup and Infill Rates of Sediment Behind Cedarcliff Falls Dam"

Kaitlyn E. Sturm (Cedarville University)
"Relationship of Surrounding Geology to Well Recovery Properties for Selected Cedarville University Water Supply Wells"

Matthew Cheney (Cedarville University)
"Comparison and Resolution of Differences in Stream Discharge Values at NWIS Sites in the Upper Little Miami River Basin, Ohio"

Thanks to our March Speaker, David K. Brezinski, Maryland Geological Survey

In March our speaker, David K. Brezinski, who is the Appalachian stratigrapher and paleontologist for the Maryland Geological Survey, spoke on "Factors controlling karst development in the Great Valley of Maryland". See his paper on this subject at http://water.usgs.gov/ogw/karst/kig2002/dkb_stratigraphy.html. Our speaker's biography and abstract provides more information regarding this presentation.

  Come join us at our PGS Meetings

Our meetings start at 6:00 pm with a social hour, dinner is served at 7:00 pm and the presentation begins at 8:00 pm. Dinner will cost $30.00/person, dinner for students is $10.00; checks preferred. For this month's meeting, reservations should be emailed to pgsreservations@gmail.com, please title as "PGS Dinner Reservation", by noon, Monday, September 14th. Meeting will be held at the Foster’s Restaurant, Foster Plaza Building 10, 680 Andersen Dr, Greentree. See map for our meeting place. Suggested attire is business casual. Students and guests are welcome, you need not be a member to attend our meetings and its okay to just drop by for the speaker presentation at 8 pm.

From Pittsburgh: Parkway West to Green Tree-Crafton Exit. Bear left at exit and left again onto Mansfield Avenue West. Follow Mansfield West to the 2nd traffic light. Turn right onto Holiday Drive and proceed up the hill to Foster Plaza Building 10.

From Airport and I 79: Parkway West towards Pittsburgh, exit at Green Tree-Mt. Lebanon Exit. Turn left onto Greentree Road, make left at 1st traffic light onto Mansfield Avenue West. Follow Mansfield West to the 2nd traffic light. Turn right onto Holiday Drive and proceed up the hill to Foster Plaza Building 10.

Or go to http://maps.google.com/maps?f=l&hl=en&sll=40.440676,-80.007248&sspn=0.127773,0.22007&q=foster%27s+restaurant+and+catering&near=pittsburgh+pa&latlng=40440556,-79996111,5411451826638810477 for a map.

If you want to prepay your dinner by PayPal, click on the button below.
PGS Dinner Meeting Fee
Attention PG's! Attend our dinner and meeting to receive a continuing education credit.
The PGS is proud to be an affiliated society with the AAPG .
  Were there dinosaurs in Western Pennsylvania?  

Yes, dinosaurs walked on the land and left behind their footprints and bones, but unfortunately this evidence has been eroded away long ago. It is difficult to imagine the enormous amount of soil and rock that has been carried away by weathering processes in the 60 million years since the end of Cretaceous time. Scientists have estimated that a layer of rock over a mile thick has been eroded since the beginning of the Mesozoic Age and with it all traces of the dinosaurs.

See Dr. John Harpers more thorough explanation for more information.

Webmaster - Mary K. McGuire, PG