Group Photograph by Dick Bailey of
participants on trip C3 during the 1998 NEIGC. They're on an
outcrop of volcanic breccia (Stop 5) in the Mattapan Volcanics southwest of
Boston.Leaders: J. Christopher Hepburn, Richard Bailey
The Boston area contains some of the best examples of Avalonian geology outside of the type area in eastern Newfoundland. We will spend the first part of the excursion viewing rocks representative of the major events in the history of the Avalon Terrane in eastern Massachusetts, following a general loop from south to west of Boston. Then, after viewing the terrane bounding Bloody Bluff Fault, we will examine the high grade Nashoba Terrane that lies to the west of Avalon. This terrane is thought to have originated as part of an early Paleozoic arc/back-arc complex, experienced multiple intrusions of both mafic and granitic magmas and was amalgamated with terranes to the west during the mid-Paleozoic. The trip will never be far from major highways and will end near the junction of Interstates 90 & 495.
Contact: J. Christopher Hepburn, Dept. of Geology and Geophysics, Boston College, Chestnut Hill, MA 02467; PHONE 617-552-3640; FAX 617-552-2462; hepburn@bc.edu
Departure Time and Location: Trip will depart from a parking lot on Chickatawbut Road in the Blue Hills, south of Boston near Stop 1 at 9:00 AM, Sunday, October 11, 1998. This location is about 1 hr. 30 min. north of Kingston, RI. Take I-95 north; bear right at Exit 1 (east) onto I-93N (Route 128S); after 3.7 miles take Exit 5B, Route 28N (Milton); follow Rt. 28N for 1.4 miles and turn right on Chickatawbut Road. Travel about 0.5 miles to paved parking area overlook. Park in lot to left. Bring a lunch.
Limit: NONE
Group Photograph by Dick Bailey of
participants on trip C3 during the 1998 NEIGC. They're on an
outcrop of volcanic breccia (Stop 5) in the Mattapan Volcanics southwest of
Boston.
NEIGC 1998 | Field Trips | Friday | Saturday | Sunday