BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Atlanta Geological Society - ECPv6.15.20//NONSGML v1.0//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
X-WR-CALNAME:Atlanta Geological Society
X-ORIGINAL-URL:https://atlantageologicalsociety.org
X-WR-CALDESC:Events for Atlanta Geological Society
REFRESH-INTERVAL;VALUE=DURATION:PT1H
X-Robots-Tag:noindex
X-PUBLISHED-TTL:PT1H
BEGIN:VTIMEZONE
TZID:America/New_York
BEGIN:DAYLIGHT
TZOFFSETFROM:-0500
TZOFFSETTO:-0400
TZNAME:EDT
DTSTART:20240310T070000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:-0400
TZOFFSETTO:-0500
TZNAME:EST
DTSTART:20241103T060000
END:STANDARD
BEGIN:DAYLIGHT
TZOFFSETFROM:-0500
TZOFFSETTO:-0400
TZNAME:EDT
DTSTART:20250309T070000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:-0400
TZOFFSETTO:-0500
TZNAME:EST
DTSTART:20251102T060000
END:STANDARD
BEGIN:DAYLIGHT
TZOFFSETFROM:-0500
TZOFFSETTO:-0400
TZNAME:EDT
DTSTART:20260308T070000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:-0400
TZOFFSETTO:-0500
TZNAME:EST
DTSTART:20261101T060000
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20250601T100000
DTEND;TZID=America/New_York:20250601T140000
DTSTAMP:20260423T081947
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/
LOCATION:GA
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20250624T180000
DTEND;TZID=America/New_York:20250624T200000
DTSTAMP:20260423T081947
CREATED:20250215T142653Z
LAST-MODIFIED:20250215T142653Z
UID:2783-1750788000-1750795200@atlantageologicalsociety.org
SUMMARY:AGS BBQ Social
DESCRIPTION:
URL:https://atlantageologicalsociety.org/event/ags-bbq-social/
LOCATION:Fernbank Museum\, 767 Clifton Rd\, Atlanta\, GA\, 30307\, United States
END:VEVENT
END:VCALENDAR