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DTSTART;TZID=America/New_York:20250601T100000
DTEND;TZID=America/New_York:20250601T140000
DTSTAMP:20260418T154822
CREATED:20250515T030121Z
LAST-MODIFIED:20250515T030121Z
UID:2836-1748772000-1748786400@atlantageologicalsociety.org
SUMMARY:Field trip to explore Brevard Zone in Metro Atlanta
DESCRIPTION:The Brevard Zone is a classic mylonite zone extending from Alabama nearly to Virginia. Within it are deformed rocks of many different mineral compositions. Register at this link for the June 1 AGS trip examining contrasting rock types at 4 outcrops\, to my knowledge never before visited by any geological society field trip. \nTime: 10-AM to about 2 PM\, Sunday\, June 1 \nWhere to meet: Blue Heron Nature Preserve\, 4055 Roswell Rd NE\, Atlanta\, GA 30342 \nWhat to bring: sack lunch\, outdoor wear\, sunscreen\, hammers and eye protection. \nPlease register at this link by completing a waiver. \nAs soon as everyone has checked in at Blue Heron\, we will drive in fewer cars 1 mile to a smaller lot in Chastain Park off Lake Forrest Drive. There we look at two exposures of a quartz-feldspar-rich rock. The exposure across the road from the park shows prominent feldspar porphyroclasts. Returning to Blue Heron\, we will examine a decent outcrop of the ordinarily poorly exposed “button schist” lithology traced for more than a hundred miles along the zone. \nAfter a lunch break\, we’ll drive 6 miles to the Perimeter Center Parkway bridge over I-285\, which overlooks a gigantic new cut in Long Island Gneiss\, a unit that persists from here well into Alabama. Although we view the big cut through a fence\, there are a couple of hundred feet of road cut along the street to see this uniform rock type interrupted by a few granitic dikes. \nThe final stop\, 14 miles east\, is the pair of nearly 1000-foot-long road cuts accessible along the sidewalks that line Pleasant Hill Road in Duluth. This site features on p. 298 of Roadside Geology of Georgia. It lies within a unit that Higgins et al. (2003) mapped as “button schist and sheared amphibolite” (POms). Our thin sections confirm the presence of hornblende in this outcrop. \nAs mentioned in previous newsletters\, you can find photomicrographs from three of the stops in the AGS Fieldtrips Folder on Google Drive. They are in the 2025PhotomicrographsForTrips.pdf file. Feel free to add comments and questions there. By field trip time\, we should also have thin sections from the Perimeter Center Parkway stop.
URL:https://atlantageologicalsociety.org/event/field-trip-to-explore-brevard-zone-in-metro-atlanta/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20250527T180000
DTEND;TZID=America/New_York:20250527T200000
DTSTAMP:20260418T154822
CREATED:20250215T142553Z
LAST-MODIFIED:20250428T203019Z
UID:2781-1748368800-1748376000@atlantageologicalsociety.org
SUMMARY:AGS Monthly Meeting - May 2025
DESCRIPTION:
URL:https://atlantageologicalsociety.org/event/ags-monthly-meeting-may-2025/
LOCATION:Fernbank Museum\, 767 Clifton Rd\, Atlanta\, GA\, 30307\, United States
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20250429T180000
DTEND;TZID=America/New_York:20250429T200000
DTSTAMP:20260418T154822
CREATED:20250215T142447Z
LAST-MODIFIED:20250424T184218Z
UID:2779-1745949600-1745956800@atlantageologicalsociety.org
SUMMARY:AGS Monthly Meeting - April 2025
DESCRIPTION:March Presentation: Microtektites\, Foraminifera and Boring Gastropods from the Upper Eocene strata of Georgia\nAndre Teague\, Pablo Fernandez\, Tony Lazcano\, Dr. Dion Stewart\, and Dr. John Anderson\, Georgia State University – Perimeter College \nWhen: April 29\, 2025\n    6:00: Social: refreshments and snacks served\n    6:45: Business meeting (zoom starts)\n    7:00: Presentation\nThe meeting will be in person at the Fernbank Museum and via zoom. Click on this link to join meeting via zoom. \nSpeaker bios: Pablo Fernandez is approaching his senior year of college in the Geosciences – Geology program at Georgia State University. He expects to graduate in the Spring of 2027 with a major in Geology and minor in Mathematics. After graduating\, he plans to either work in consulting or pursue an Environmental engineering degree. Tony Lazcano is a sophomore student at Georgia State University Perimeter College majoring in geology.  He is currently working in land management at Stone Mountain Park. He is interested in all science and enjoys doing research. Andre Teague\, is a Computer Science major at Georgia State Perimeter College\, working towards his Associate degree. He plans to earn his Bachelor’s degree in Computer Science at Georgia State University and eventually a Doctorate in Data Science. His primary focus right now is on applying data science techniques to geological and environmental research\, particularly in analyzing patterns and interactions within ancient ecosystems. Dion Stewart\, Ph.D. is a Professor of Geology at Georgia State University Perimeter College.  He has been teaching at Perimeter College for over 20 years.  Prior to Perimeter College Dion taught at Adam State University in Colorado\, Bowling Green State University in Ohio\, and Penn State University.  Dion is a geochemistry and mineralogist. \nJohn Anderson\, Ph.D. is a retired Professor of Geology and is now an adjunct instructor at Georgia State University Perimeter College.  He taught at Perimeter College for 21 years before becoming the Dean of Science\, Technology\, Engineering\, and Mathematics at Virginia Western Community College in Roanoke\, Virginia.  John is a paleobiologist and physical geographer. \nAbstract:.Georgia State University\, Perimeter College purchased a table top scanning electron microscope (SEM) to assist students in completing research during their first two years of college.  The SEM is housed on the Clarkston Campus and Dr. Dion Stewart and Dr. John Anderson have been working with students on various research projects associated with the Upper Eocene strata of Georgia.  The main focus has been the Ocmulgee Limestone from the Oaky Woods Wildlife Management area.  Dr. Anderson was granted permission to collect the stratigraphic section\, about 40 meters\, from the Twiggs Clay up through the Oligocene Suwannee Limestone.  Students have been working on various aspects of this stratigraphic section as well as the Sandersville Limestone from the Tennille Lime Sinks and the Tivola Limestone from the quarry near Clinchfield\, Georgia.  Pablo has been working on the microtektites found in the Sandersville and Ocmulgee limestones.  Tony has been looking at the foraminifera faunal changes from the Tivola Limestone\, Twiggs Clay\, and the Sandersville/Ocmulgee Limestone interval to see if there are changes due to environmental changes due to the Chesapeake Bay impact that produced the microtektites that Pablo is looking at and the Georgiaite Tektites found in Georgia. While looking at the Foraminifera from the Tivola Limestone\, Twiggs Clay\, Sandersville Limestone and the Ocmulgee Limestone we found that several of the Foraminifera have drill holes in them. Andre is measuring the outer drill hole diameters and using the linear relationship that Klompmaker\, et al.\, (2017) determined for outer drill hole diameters versus shell length for modern drilling organisms to determine the shell length of the drilling naticid gastropods on the Eocene foraminifera we have found.  Our talk to the Atlanta Geological Society will present the findings for these three research projects. \nReference: Klompmaker\, A.A.\, Kowalewski\, M.\, Huntley\, J.W.\, and Finnegan\, S.\, 2017\, Increase in predator-prey size ratios throughout the Phanerozoic history of marine ecosystems\, Science\, vol. 356\, p. 1178 – 1180.
URL:https://atlantageologicalsociety.org/event/ags-monthly-meeting-april-2025/
LOCATION:Fernbank Museum\, 767 Clifton Rd\, Atlanta\, GA\, 30307\, United States
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20250422T180000
DTEND;TZID=America/New_York:20250422T193000
DTSTAMP:20260418T154822
CREATED:20250215T144828Z
LAST-MODIFIED:20250215T144828Z
UID:2797-1745344800-1745350200@atlantageologicalsociety.org
SUMMARY:AGS Executive Board Meeting - April 2025
DESCRIPTION:The AGS executive committee\, consisting of officers and committee chairs\, will meet via zoom. Contact Scott Harris to get zoom link if you are interested in participating: gageologist@gmail.com
URL:https://atlantageologicalsociety.org/event/ags-executive-board-meeting-april-2025/
LOCATION:Online via Zoom
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20250325T180000
DTEND;TZID=America/New_York:20250325T200000
DTSTAMP:20260418T154822
CREATED:20250215T142345Z
LAST-MODIFIED:20250215T154750Z
UID:2777-1742925600-1742932800@atlantageologicalsociety.org
SUMMARY:AGS Monthly Meeting - March 2025
DESCRIPTION:
URL:https://atlantageologicalsociety.org/event/ags-monthly-meeting-march-2025/
LOCATION:Fernbank Museum\, 767 Clifton Rd\, Atlanta\, GA\, 30307\, United States
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20250323T093000
DTEND;TZID=America/New_York:20250323T120000
DTSTAMP:20260418T154822
CREATED:20250215T143227Z
LAST-MODIFIED:20250223T155027Z
UID:2787-1742722200-1742731200@atlantageologicalsociety.org
SUMMARY:AGS Fieldtrip - Mason Mill Park
DESCRIPTION:Field Trip: Mason Mill Park\nOur next AGS field outing will be on Sunday\, March 23 to Mason Mill Park\, a 12-minute drive from our monthly meeting site at Fernbank Museum. As with the 2023 and 2024 AGS trips to the Davidson-Arabia Mountain Nature Preserve\, the outing is in cooperation with DeKalb County Parks and Recreation. Like those trips\, this will be a crowdsource discovery trip. \nThe goal is to use the Rockd app (developed with NSF funding at U. Wisconsin) to log all the park’s outcrops. For fun\, we will split into two teams. “Blizzards” (participants with November through April birthdays)\, will have a friendly competition with “Hurricanes” (May through October birthdays) to see who can log the most outcrops. \nWe’ll begin at 9:30 in the center of the park\, by visiting three outcrops from which we have thin sections. One exposes a non-foliated granitic intrusion\, and the other two expose gneiss\, one with contorted foliation. To crowdsource interpreting the thin sections\, see the “AGS Fieldtrips” Google Drive folder at this link\, where you can add comments in the PDF file containing 24 new images from those three outcrops. \nEach team will be assigned to explore roughly half of the park’s trail network looking for outcrops. In the park\, there are many rock and saprolite exposures – in rail cuts\, along streambanks\, eroded trails\, and elsewhere. We’ll reconvene a few hours later to assimilate what we learned. The outcrop logging is simple. For example\, collecting a strike and dip is easier than ever with the app. \nTo signup for the event click here
URL:https://atlantageologicalsociety.org/event/ags-fieldtrip-mason-mill-park/
LOCATION:Mason Mill Park
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20250225T180000
DTEND;TZID=America/New_York:20250225T200000
DTSTAMP:20260418T154822
CREATED:20250215T142245Z
LAST-MODIFIED:20250215T142245Z
UID:2774-1740506400-1740513600@atlantageologicalsociety.org
SUMMARY:AGS Monthly Meeting - February 2025
DESCRIPTION:
URL:https://atlantageologicalsociety.org/event/ags-monthly-meeting-february-2025/
LOCATION:Fernbank Museum\, 767 Clifton Rd\, Atlanta\, GA\, 30307\, United States
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20250128T180000
DTEND;TZID=America/New_York:20250128T200000
DTSTAMP:20260418T154822
CREATED:20241209T222849Z
LAST-MODIFIED:20241209T222849Z
UID:2757-1738087200-1738094400@atlantageologicalsociety.org
SUMMARY:AGS Monthly Meeting
DESCRIPTION:Speaker: Scott Harris\, President\, Atlanta Geological Society \nWhen: January 28\, 2025\n6:00: Social: refreshments and snacks served\n6:45: Business meeting (zoom starts)\n7:00: Presentation \nThe meeting will be in person at the Fernbank Museum and via zoom.
URL:https://atlantageologicalsociety.org/event/ags-monthly-meeting-26/
LOCATION:Fernbank Museum\, 767 Clifton Rd\, Atlanta\, GA\, 30307\, United States
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20250125T100000
DTEND;TZID=America/New_York:20250125T120000
DTSTAMP:20260418T154822
CREATED:20240903T132402Z
LAST-MODIFIED:20250122T181016Z
UID:2662-1737799200-1737806400@atlantageologicalsociety.org
SUMMARY:PG Workshop - Economic Geology CANCELLED
DESCRIPTION:Instructor: Steve Stokowski \nThis event has been cancelled and will be rescheduled at a later date.
URL:https://atlantageologicalsociety.org/event/pg-workshop-economic-geology/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20250116T180000
DTEND;TZID=America/New_York:20250116T200000
DTSTAMP:20260418T154822
CREATED:20240202T170638Z
LAST-MODIFIED:20240202T170638Z
UID:2543-1737050400-1737057600@atlantageologicalsociety.org
SUMMARY:AGS Executive Committee Meeting
DESCRIPTION:AGS Executive Committee Meeting via zoom
URL:https://atlantageologicalsociety.org/event/ags-executive-committee-meeting-5/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20241126T180000
DTEND;TZID=America/New_York:20241126T200000
DTSTAMP:20260418T154822
CREATED:20240910T202222Z
LAST-MODIFIED:20241110T213404Z
UID:2676-1732644000-1732651200@atlantageologicalsociety.org
SUMMARY:AGS Monthly Meeting - November
DESCRIPTION:Speaker: Isaiah Bolden \nTopic: Biogeochemical “Clues” for Fingerprinting and Tracking the Health of Modern Reefs in the US Virgin Islands \nWhen: November 26\, 2024\n6:00: Social: refreshments and snacks served\n6:45: Business meeting and election (zoom starts)\n7:15: Presentation \nThe meeting will be in person at the Fernbank Museum and via zoom. Click on this link to join meeting via zoom.
URL:https://atlantageologicalsociety.org/event/ags-monthly-meeting-november/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20241029T180000
DTEND;TZID=America/New_York:20241029T200000
DTSTAMP:20260418T154822
CREATED:20240903T132937Z
LAST-MODIFIED:20240910T202039Z
UID:2665-1730224800-1730232000@atlantageologicalsociety.org
SUMMARY:AGS Monthly Meeting - October
DESCRIPTION:Speaker: Tom Schmidt \nTopic: Predicting Earthquakes with Neural Networks (AI). \nWhen: October 29\, 2024\n6:00: Social: refreshments and snacks served\n6:45: Business meeting (zoom starts)\n7:00: Presentation \nThe meeting will be in person at the Fernbank Museum and via zoom. Click on this link to join meeting via zoom.
URL:https://atlantageologicalsociety.org/event/ags-monthly-meeting-october/
LOCATION:Fernbank Museum\, 767 Clifton Rd\, Atlanta\, GA\, 30307\, United States
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20241026T100000
DTEND;TZID=America/New_York:20241026T120000
DTSTAMP:20260418T154822
CREATED:20240903T132242Z
LAST-MODIFIED:20241009T185352Z
UID:2660-1729936800-1729944000@atlantageologicalsociety.org
SUMMARY:PG Workshop - Geophysics
DESCRIPTION:Instructor: Jorgen Bergstrom \nPlease join us and forward this message to anyone interested in becoming a Georgia Registered Professional Geologist\, or anyone who might be interested in the topic.  Two Professional Development Hours are available for attendees of the class.  The classes are open to all\, membership in the AGS is encouraged\, but not required. \nTo register for this class\, please click here
URL:https://atlantageologicalsociety.org/event/pg-workshop-geophysics/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20241003T180000
DTEND;TZID=America/New_York:20241003T200000
DTSTAMP:20260418T154822
CREATED:20240202T170535Z
LAST-MODIFIED:20240202T170535Z
UID:2541-1727978400-1727985600@atlantageologicalsociety.org
SUMMARY:AGS Executive Committee Meeting
DESCRIPTION:AGS Executive Committee Meeting via zoom
URL:https://atlantageologicalsociety.org/event/ags-executive-committee-meeting-4/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20240924T180000
DTEND;TZID=America/New_York:20240924T200000
DTSTAMP:20260418T154822
CREATED:20240903T131131Z
LAST-MODIFIED:20240910T201848Z
UID:2653-1727200800-1727208000@atlantageologicalsociety.org
SUMMARY:AGS Monthly Meeting - September
DESCRIPTION:Speaker: Rob McDowell\, Assistant Professor\, Georgia State University – Perimeter College\nTopic: –Scotland: Appalachian Geology Across the Sea \nWhen: September 24\, 2024\n6:00: Social: refreshments and snacks served\n6:45: Business meeting (zoom starts)\n7:00: Presentation \nThe meeting will be in person at the Fernbank Museum and via zoom. Click on this link to join meeting via zoom.
URL:https://atlantageologicalsociety.org/event/ags-monthly-meeting-september/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20240921T100000
DTEND;TZID=America/New_York:20240921T120000
DTSTAMP:20260418T154822
CREATED:20240903T131918Z
LAST-MODIFIED:20240903T132108Z
UID:2656-1726912800-1726920000@atlantageologicalsociety.org
SUMMARY:PG Workshop - Engineering Geology
DESCRIPTION:Speaker: Benjamin Black \nPlease join us and forward this message to anyone interested in becoming a Georgia Registered Professional Geologist\, or anyone who might be interested in the topic.  Two Professional Development Hours are available for attendees of the class.  The classes are open to all\, membership in the AGS is encouraged\, but not required. \nTo register for this class\, please click here
URL:https://atlantageologicalsociety.org/event/pg-workshop-engineering-geology/
LOCATION:Online via Zoom
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20240914T100000
DTEND;TZID=America/New_York:20240914T120000
DTSTAMP:20260418T154822
CREATED:20240903T130536Z
LAST-MODIFIED:20240903T130536Z
UID:2651-1726308000-1726315200@atlantageologicalsociety.org
SUMMARY:PG Workshop - GEOLOGY OF CAVES AND KARST
DESCRIPTION:GEOLOGY OF CAVES AND KARST \nInstructor: Steve Stokowski is a past VP of the Atlanta Geological Society and is active in many professional organizations.  He holds a B.S. in Geology from George Washington University and a M.S. in Geology from the South Dakota School of Mines and Technology.  He is a Fellow of the National Speleological Society\, taught Speleology for the Smithsonian Associates\, and started the long-running NSS Short Course “Speleology for Cavers.”  Come learn how limestone bedding types and rock textures\, folding\, and faulting affect the location and size of caves and karst features. Learn how caves form in the deep subsurface and along river terraces. Bring home with you the geologic reason of parallel passages\, the hydraulic reason for elliptical passage cross-sections\, and the meaning to speleologists of Bogli’s mixing corrosion. \nPlease join us and forward this message to anyone interested in becoming a Georgia Registered Professional Geologist\, or anyone who might be interested in the topic.  Two Professional Development Hours are available for attendees of the class.  The classes are open to all\, membership in the AGS is encouraged\, but not required. \nTo register for this class\, please click here
URL:https://atlantageologicalsociety.org/event/pg-workshop-geology-of-caves-and-karst/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20240827T180000
DTEND;TZID=America/New_York:20240827T200000
DTSTAMP:20260418T154822
CREATED:20240410T202537Z
LAST-MODIFIED:20240816T212800Z
UID:2574-1724781600-1724788800@atlantageologicalsociety.org
SUMMARY:AGS Monthly Meeting
DESCRIPTION:Atlanta Geological Society Monthly Meeting. \nSpeaker: Bill Witherspoon \nTopic: Along the Divide – What Shapes Our Mountains? \nAbstract: Trivia question — What connects Okefenokee Swamp\, the Georgia State Capitol\, the trailhead at North Carolina’s Whiteside Mountain\, and Terra Incognita Vineyard near Clarkesville?  Answer — the Eastern Continental Divide (ECD). \nI created “Along the Divide” for a “talk & walk” this month at Terra Incognita Vineyard. The program traces the ECD from the sandhills of Florida through Atlanta to the peaks of North Carolina. In northeast Georgia\, the focus is on the stream capture event that led to Tallulah Gorge and a signature bend in the GA-SC boundary. At Whiteside\, the program considers a travel writer’s claim that this is “the world’s oldest mountain” and argues that the opposite is closer to the truth. This leads into the recent excitement over possible Neogene uplift in the Southern Appalachians as well as pushback in a 2022 review article by Virginia Tech researchers.
URL:https://atlantageologicalsociety.org/event/ags-monthly-meeting-25/
LOCATION:Fernbank Museum\, 767 Clifton Rd\, Atlanta\, GA\, 30307\, United States
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20240815T180000
DTEND;TZID=America/New_York:20240815T200000
DTSTAMP:20260418T154822
CREATED:20240202T170439Z
LAST-MODIFIED:20240202T170439Z
UID:2539-1723744800-1723752000@atlantageologicalsociety.org
SUMMARY:AGS Executive Committee Meeting
DESCRIPTION:AGS Executive Committee Meeting via zoom
URL:https://atlantageologicalsociety.org/event/ags-executive-committee-meeting-3/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20240804T083000
DTEND;TZID=America/New_York:20240804T113000
DTSTAMP:20260418T154822
CREATED:20240710T221058Z
LAST-MODIFIED:20240710T221058Z
UID:2603-1722760200-1722771000@atlantageologicalsociety.org
SUMMARY:Field trip to Arabia Mountain
DESCRIPTION:Following is taken from abstract by Dr. Aislin N. Reynolds\, Georgia Tech \nThe formation of surface parallel exfoliation fractures in rock domes produces some of the most celebrated and curious landforms on Earth. More than a century of observations\, including direct measurement of active exfoliation events\, highlight the key roles of solar heating and subcritical fracture propagation in rock exfoliation. Here we present new insights from Arabia Mountain\, a biotite orthogneiss dome near Atlanta\, Georgia (USA) that experienced a spontaneous exfoliation event of a formerly quarried surface in July 2023. The event uplifted a ~250 m2 area over 30 cm\, as revealed by digital elevation model differencing and field measurements. Following the event\, instrumentation was installed to monitor continued fracturing during summer 2024\, including surface parallel stresses\, local seismic waves\, and surface air and rock temperatures. Multiple additional exfoliation events were witnessed in-person during equipment installation\, including direct observation of progressive fracture propagation and explosion. \nParticipants will meet at the Davidson-Arabia Mountain Nature Center at 8:30 AM on Sunday\, August 4th\, 2024. The hike will start at 9:00 and last until approximately 11:30 AM. Please bring water and sun protection. \nParticipants must complete a waiver: https://atlantageologicalsociety.org/participation-waiver/
URL:https://atlantageologicalsociety.org/event/field-trip-to-arabia-mountain/
LOCATION:Arabia Mtn Nature Ctr\, 3787 Klondike Rd\, Stonecrest\, GA\, 30038\, United States
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20240730T180000
DTEND;TZID=America/New_York:20240730T190000
DTSTAMP:20260418T154822
CREATED:20240710T215520Z
LAST-MODIFIED:20240710T232928Z
UID:2601-1722362400-1722366000@atlantageologicalsociety.org
SUMMARY:Special Online Presentation--Thermally Induced Fracturing: New Insights from Active Exfoliation at Arabia Mountain\, Georgia
DESCRIPTION:This presentation provides geologic background prior to a field trip to the Arabia Mountain on August 4\, 2024 \nThe speaker will be Dr. Aislin N. Reynolds\, President’s Postdoctoral Fellow at Georgia Tech \nAbstract: The formation of surface parallel exfoliation fractures in rock domes produces some of the most celebrated and curious landforms on Earth. In 1904\, G.K. Gilbert outlined three mechanisms to produce exfoliation fractures: (1) original cooling of the rock\, (2) decompression during rock exhumation\, or (3) post-exhumation surface processes. More than a century of observations\, including direct measurement of active exfoliation events\, highlight the key roles of solar heating and subcritical fracture propagation in rock exfoliation. Here we present new insights from Arabia Mountain\, a biotite orthogneiss dome near Atlanta\, Georgia (USA) that experienced a spontaneous exfoliation event of a formerly quarried surface in July 2023. The event uplifted a ~250 m2 area over 30 cm\, as revealed by digital elevation model differencing and field measurements. Following the event\, instrumentation was installed to monitor continued fracturing during summer 2024\, including surface parallel stresses\, local seismic waves\, and surface air and rock temperatures. Multiple additional exfoliation events were witnessed in-person during equipment installation\, including direct observation of progressive fracture propagation and explosion. Observations and stress and seismic measurements all suggest a strong correlation with diurnal thermal cycles as captured by thermal sensors. These observations are compared with predicted stress distribution models informed by bulk-property measurements and regional geologic conditions to investigate the broader question: is the formation of exfoliation joints more sensitive to surface processes (e.g. solar heating and weathering)\, confining stresses related to topography and erosion\, or interactions of regional (i.e. tectonic) stresses with topography? Understanding the mechanisms driving exfoliation fracturing in rock domes will better constrain the sensitivities of these domes to future climate evolution\, with implications for forecasting rockfall hazards.
URL:https://atlantageologicalsociety.org/event/special-online-presentation-exfoliation-fractures-at-arabia-mountain/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20240727T100000
DTEND;TZID=America/New_York:20240727T120000
DTSTAMP:20260418T154822
CREATED:20240725T150650Z
LAST-MODIFIED:20240725T150650Z
UID:2623-1722074400-1722081600@atlantageologicalsociety.org
SUMMARY:PG Workshop: Petrology and Petrography
DESCRIPTION:Topic: Professional Geologist Candidate Workshop: Petrology and Petrography\n\nInstructor: Steven Stokowski\n\nWhen: 10am-12noon\, July 27\, 2024\n\nWhere: Zoom presentation. To sign up\, please click here\n\nCourse Syllabus: This review will cover petrography and petrology relevant to minerals and rocks. Emphasis will be on facts and calculations that are likely to be presented in the ASBOG Exam. The petrography review will focus upon the microscope tools and microscope methods used by geologists to perform their duties. The primary focus will be on reflected light (RL) and polarized light microscopes (PLM)\, ubiquitous in classic geology departments\, but often optional in departments that emphasize groundwater and environmental geology. The petrology review will cover the classification and origin of igneous\, metamorphic\, and sedimentary rocks\, including coal. I will discuss field and laboratory classifications based upon color\, grain size\, and mineral content.\n 
URL:https://atlantageologicalsociety.org/event/pg-workshop-petrology-and-petrography/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20240625T180000
DTEND;TZID=America/New_York:20240625T200000
DTSTAMP:20260418T154822
CREATED:20240316T003647Z
LAST-MODIFIED:20240316T003647Z
UID:2561-1719338400-1719345600@atlantageologicalsociety.org
SUMMARY:AGS Annual BBQ Social
DESCRIPTION:It’s time to start planning for the annual BBQ social. Remember last year’s event with lots of door prizes and Tony and his jokes? Who can top that?  Well\, we can try but we need volunteers\, and sponsors to make it happen. We only have three more monthly meetings before the Social. So\, in the next few weeks\, can you or your company provide a $100-$200 donation to help sponsor this annual event?  Or maybe you can volunteer and join me to set up/clean up the dining area\, check in guests\, take dues\, help with door prizes or you could be the Master of Ceremonies. Think about it and let me know as soon as you can. \nIf you have never been to the June BBQ Social it will be in the rotunda with the dinosaurs. Reservations are not needed but I will try to get a head count so I can buy enough food to have leftovers. The dinner menu includes barbecue chicken and pork\, bread\, mac and cheese\, BBQ beans\, sweet and unsweet tea\, and cobbler and cookies for dessert. While we eat\, Pamela will give her presidential address followed by door prize giveaways. The Big Screen Movie starts after dinner. Sponsors are welcome to set up a meet and greet table or give a short presentation. \nPlease let me know if you can help out\, bring company SWAG\, geology books\, maps\, rocks\, fossils donations for door prizes. Thanks again John Salvino Hospitality Chair and Treasurer johnsalvino@bellsouth.net \nAnnual BBQ Social: Tuesday\, 6pm\, June 25\, 2024 - *Members Free\, Guests $5\n*Membership must be current for 2024. To renew your membership\, please click here
URL:https://atlantageologicalsociety.org/event/ags-annual-bbq-social-2/
LOCATION:Fernbank Museum\, 767 Clifton Rd\, Atlanta\, GA\, 30307\, United States
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20240528T180000
DTEND;TZID=America/New_York:20240528T200000
DTSTAMP:20260418T154822
CREATED:20231012T174834Z
LAST-MODIFIED:20240410T202331Z
UID:2476-1716919200-1716926400@atlantageologicalsociety.org
SUMMARY:AGS Monthly Meeting
DESCRIPTION:May 28\, 2024\, 6pm: Atlanta Geological Society monthly meeting. \nSpeaker: Jessica Turner\, GEI Consultants. \nTopic: Brownfields.
URL:https://atlantageologicalsociety.org/event/ags-monthly-meeting-24/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20240502T180000
DTEND;TZID=America/New_York:20240502T200000
DTSTAMP:20260418T154822
CREATED:20240202T170339Z
LAST-MODIFIED:20240202T170339Z
UID:2537-1714672800-1714680000@atlantageologicalsociety.org
SUMMARY:AGS Executive Committee Meeting
DESCRIPTION:AGS Executive Committee Meeting via zoom
URL:https://atlantageologicalsociety.org/event/ags-executive-committee-meeting-2/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20240430T180000
DTEND;TZID=America/New_York:20240430T200000
DTSTAMP:20260418T154822
CREATED:20231012T174706Z
LAST-MODIFIED:20240410T202738Z
UID:2474-1714500000-1714507200@atlantageologicalsociety.org
SUMMARY:AGS Monthly Meeting
DESCRIPTION:April 30\, 2024\, 6pm: Atlanta Geological Society monthly meeting. \nSpeaker: Anthony Boxleiter\, Ga State University. \nTopic: A new look at the Late Cretaceous-Eocene stratigraphy of the Upper Coastal Plain of central Georgia
URL:https://atlantageologicalsociety.org/event/ags-monthly-meeting-23/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20240326T180000
DTEND;TZID=America/New_York:20240326T200000
DTSTAMP:20260418T154822
CREATED:20231012T174607Z
LAST-MODIFIED:20231012T174607Z
UID:2472-1711476000-1711483200@atlantageologicalsociety.org
SUMMARY:AGS Monthly Meeting
DESCRIPTION:March 26\, 2024\, 6pm: Atlanta Geological Society monthly meeting. \nSpeaker: Christy Visaggi\, Ga State University. \nTopic: Paleontological resources in the National Park Service: stories from the field and in the collections.
URL:https://atlantageologicalsociety.org/event/ags-monthly-meeting-22/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20240321T180000
DTEND;TZID=America/New_York:20240321T200000
DTSTAMP:20260418T154822
CREATED:20240202T170246Z
LAST-MODIFIED:20240202T170246Z
UID:2535-1711044000-1711051200@atlantageologicalsociety.org
SUMMARY:AGS Executive Committee Meeting
DESCRIPTION:AGS Executive Committee Meeting via zoom
URL:https://atlantageologicalsociety.org/event/ags-executive-committee-meeting/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20240227T180000
DTEND;TZID=America/New_York:20240227T200000
DTSTAMP:20260418T154822
CREATED:20231012T174508Z
LAST-MODIFIED:20231012T174508Z
UID:2470-1709056800-1709064000@atlantageologicalsociety.org
SUMMARY:AGS Monthly Meeting
DESCRIPTION:February 27\, 2024\, 6pm: Atlanta Geological Society monthly meeting. \nSpeaker: Andy Newman\, Georgia Tech. \nTopic:  Understanding earthquake and tsunami behavior in subduction zones.
URL:https://atlantageologicalsociety.org/event/ags-monthly-meeting-21/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20240224T100000
DTEND;TZID=America/New_York:20240224T120000
DTSTAMP:20260418T154822
CREATED:20240215T190909Z
LAST-MODIFIED:20240215T191726Z
UID:2548-1708768800-1708776000@atlantageologicalsociety.org
SUMMARY:PG Workshop: Hydrogeology
DESCRIPTION:This workshop will be offered via zoom \nCourse Syllabus: The workshop will explore current practices in the field of hydrogeology with an emphasis on water resources. Mr. Foldesi will cover techniques utilized for groundwater exploration and development in both bedrock and coastal plain environments. The process of implementing and maintaining Aquifer storage and recovery (ASR) projects will be reviewed. Mr. Foldesi will also discuss saltwater intrusion studies\, the hydrogeologic component of implementing land application systems (LAS) projects\, and his recent involvement with utilizing limestone quarries as a water resource. Mr. Foldesi will share his experience in constructing\, calibrating\, and performing predictions with groundwater models to support diverse projects involving alternative aquifer development\, groundwater permitting support\, mine dewatering\, LAS mounding studies\, and ASR development. \n​Course Instructor: Chris Foldesi has over 20 years of experience as a water resource hydrogeologist. He is experienced in aquifer test planning and analysis\, wellfield design\, and groundwater source development. Chris is a registered Professional Geologist in Georgia\, North Carolina\, and South Carolina. He has been involved in Aquifer Storage Recovery (ASR) projects since graduate school\, when he produced a MODFLOW groundwater model utilized to predict the performance of multiple ASR wells at Greenville\, North Carolina\, as part of his Master’s thesis at East Carolina University. Chris has been the lead hydrogeologist on several ASR projects in both North Carolina and South Carolina\, where he has been involved with site selection\, target aquifer selection\, coring\, regulatory compliance\, detailed aquifer testing\, and final ASR well construction activities. He is an experienced groundwater modeler and has designed and calibrated predictive models dealing with diverse problems such as mine dewatering\, alternative aquifer development\, ASR\, and Land Application Systems. Chris has been involved in saltwater intrusion studies in a variety of coastal settings in both North and South Carolina. Chris has been the lead hydrogeologist on several alternative aquifer testing and exploration projects and many other water resource related groundwater projects throughout his career. \nAGS Members may participate: to obtain zoom link contact Ben Black at: benjamin.black@geologicllc.net \nTo Join AGS: https://atlantageologicalsociety.org/member-benefits-4/ \n 
URL:https://atlantageologicalsociety.org/event/pg-workshop-hydrogeology/
END:VEVENT
END:VCALENDAR