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Second Circular and Call for Abstracts AGS Colloquium Delta Beauséjour Hotel, Moncton NB February 3-5, 2012 The 38th annual AGS Colloquium and Annual General Meeting will be held at the Delta Beauséjour Hotel in Moncton, New Brunswick on February 3-5, 2012. Theme: “Current Research in the Atlantic Provinces (and Beyond)” Special Sessions: “Fundy Oceanography and Sedimentation” (Elizabeth Kosters) “Paleontology in Atlantic Canada” (Deborah Skilliter and Melissa Grey) Workshop: Dan Kontak and Jacob Hanley will be presenting a Friday afternoon short course on “Practical Applications of Fluid Inclusions to Ore Forming Environments”. Abstracts Abstracts should not exceed 500 words, including title and author information. Abstracts must be submitted by e-mail to [email protected] by Monday, January 9, 2012; however, if possible, please submit by the end of December, 2011. Please pay close attention to the appended sample abstract and follow the format(s) shown there, and make sure your abstract is adequately proofed and edited. All submitted abstracts must indicate: 1) whether they are for oral or poster presentation; and 2) whether or not the presenter is a student, and if so, whether at the B.Sc., M.Sc. or Ph.D. level. Student presenters are eligible for the Rupert MacNeill Award for best undergraduate oral presentation, the Sandra Barr Award for best graduate student oral presentation, and the Graham Williams Award for best poster. All student award winners will have their names engraved on the award plaque, and will also receive a cheque for $100, a certificate, and a free banquet ticket. Only one abstract will be accepted from a given principal author, and the organizers also reserve the right to reject abstracts that are received after the abstract deadline; in a worstcase scenario, abstracts will be accepted on a first come-first served basis, and it may not be possible for all to be accommodated. Your abstract will not be officially accepted until you have registered for the Colloquium; the registration form will be circulated by e-mail to AGS members, and posted on the AGS website (http://ags.earthsciences.dal.ca/ags.php) by midDecember. Instructions to Presenters All oral presentations should be prepared in PowerPoint for an LCD projector (preferably a pps file as opposed to a ppt file); only one screen will be available. Laptops and projectors will be provided at the conference, including a laptop in the speaker ready-room. Posters are encouraged whenever possible; standard poster space is 3’ x 6’ (velcro-friendly panels, velcro not supplied). Sussex Mine Tour Up to 16 people can be accommodated for an underground tour of the PCS New Brunswick Division potash mine near Sussex. Participants will be accepted on a first-come, firstserved basis, so if you are interested, get your registration in early. Registration forms will be circulated by e-mail to AGS members and will also be available on the AGS website (http://ags.earthsciences.dal.ca/ags.php) by mid-December. Participants must provide their own transportation to and from Sussex. The mine is located about 8 km east of Sussex, on the north side of the Trans-Canada Highway (TCH) (new headframes have recently been erected on the south side as part of a major expansion). Take exit 211 off the TCH and follow Route 114 north and west. Park in the visitor’s area and report to the onsite security office by 11:30 AM Friday, February 3. Participants should wear old clothes (field gear) and work boots. No beards will be permitted underground. Accommodations A block of rooms has been reserved at the Hotel Delta Beauséjour, 750 Main St., Moncton, and attendees should book their reservations by Wednesday, January 11, 2012 to take advantage of the conference rate. Room rates are $135 for single or double occupancy, $155 for triple, and $175 for quadruple. For reservations call 506-854-4344 or 1-888-351-7666 and indicate that you are booking for the Atlantic Geoscience Society meeting. Clients with a guestroom in the hotel will receive a discounted 24-hour parking pass. This pass will be issued to you upon check in at a rate of $10.75 plus tax. High Speed Ethernet Internet access is complimentary in all guestrooms. Wireless High Speed Internet is complimentary and accessible in the hotel lobby. Awards Banquet and Entertainment Banquet tickets will not be available at the registration desk; except for those set aside for student award winners, tickets must be reserved and paid for by the pre-registration deadline of January 27, 2011. A highlight of each AGS Colloquium is the annual awards banquet, and presentation of the student awards, the Laing Ferguson Award (Distinguished Service to AGS), and the Gesner Medal (Distinguished Scientist Award). This year’s after-dinner speaker will be Bob Grantham, Chairman of the Board of Directors of the newly formed Gesner Institute Society and a familiar name to many AGS members; Bob’s presentation is entitled “Adventures in Geoscience Interpretation”. A post-banquet tradition is the annual AGS Ceilidh and Jam-Session. The musicallyinclined are invited to bring their instruments and entertain those of us who aren’t so musically inclined. All instruments and styles welcome. An “entertainment room” has been arranged with the hotel for Saturday night following the banquet. (Sample Abstract) Proterozoic to early Paleozoic lithotectonic terranes in New Brunswick, Canada LESLIE R. FYFFE1, SUSAN C. JOHNSON2, AND CEES R. VAN STAAL3 1. Geological Surveys Branch, New Brunswick Department of Natural Resources, P.O. Box 6000, Fredericton, New Brunswick E3B 5H1, Canada <[email protected]> 2. Geological Surveys Branch, New Brunswick Department of Natural Resources, P.O. Box 5040, Sussex, New Brunswick E4E 5L2, Canada 3. Geological Survey of Canada (Pacific), Vancouver, British Columbia V6B 5J3, Canada A significant advance was made to the understanding of the geodynamics of the Appalachian orogen with the introduction of four lithotectonic zones defined on the island of Newfoundland by Hank Williams in the early 1960s. The plate tectonic evolution of these zones was interpreted in terms of a simple, orthogonal Wilson Cycle. In such a model, the Humber Zone in the west and Gander Zone in the east represented opposing Laurentian and Gondwanan continental margins of the Paleozoic Iapetus Ocean. Vestiges of Iapetan island arcs and oceanic crust were preserved in the intervening highly deformed Dunnage Zone. The clastic sedimentary rocks characterizing the Gander Zone were thought to represent the continental rise prism deposited along the margin of Gondwana represented by the Neoproterozoic basement rocks of the Avalon Zone. The application of suspect terrane concepts in the early 1980s led to the recognition that the tectonic evolution of the Appalachians was far more complex than previously envisioned. The Gander and Avalon zones came to be viewed as separate ribbon microcontinents that were rifted at different times from different parts of the Gondwanan margin - Ganderia from the Amazonian craton and Avalonia from a position between the West African and Amazonian cratons. These microcontinents and fringing volcanic arc systems were subsequently accreted to the Laurentian continental margin during various episodes of Paleozoic orogenesis associated with oblique subduction of Iapetan ocean crust and closure of backarc basins. Eight pre-Silurian lithotectonic terranes are presently recognized along the periGondwanan margin of Iapetus in New Brunswick. The Caledonia terrane, which forms part of Avalonia, comprises Neoproterozoic continental volcanic arc rocks and comagmatic plutons. The remaining terranes are associated with Ganderia and include: Brookville terrane Mesoproterozoic to Neoproterozoic platformal carbonates and Neoproterozoic to Early Cambrian plutonic rocks; New River terrane - Neoproterozoic volcanic and comagmatic plutons unconformably overlain by Early to Middle Cambrian rifted arc volcanic rocks; Annidale terrane - Late Cambrian to Early Ordovician arc-backarc volcanic rocks unconformably overlain by late Early Ordovician volcanic rocks; St. Croix terrane - Cambrian to Late Ordovician sedimentary rocks deposited along the continental margin of Ganderia; Miramichi terrane - Cambrian to Early Ordovician sedimentary rocks unconformably overlain by Early to Late Ordovician, ensialic, arc- backarc volcanic rocks; Elmtree terrane - Middle to Late Ordovician, backarc ophiolitic and sedimentary rocks; and Popelogan terrane - Middle to Late Ordovician volcanic arc and sedimentary rocks. The accretion of these terranes to the Laurentian margin is attributed to four major tectonic events: Early Ordovician Penobscot Orogeny; Late Ordovician Taconic Orogeny; Late Ordovician to Late Silurian Salinic Orogeny; and Late Silurian to Early Devonian Acadian Orogeny.