ATLANTIC GEOSCIENCE SOCIETY

NEWSLETTER
VOLUME 26 NO.1 JANUARY 23, 1997
Please forward newsletter items on disk to Susan Gower/Sharon McKinnon @ P.O. Box 50, Bathurst, NB E2A 3Z1
or email to Susan Gower. 
Deadline for next newsletter is February 28, 1997.

25th ANNIVERSARY COLLOQUIUM

February 7-8, 1997, Amherst, Nova Scotia

PROGRAM
Workshop, meetings, technical sessions, luncheon, & banquet are all at the Wandlyn Inn, Amherst (902) 667-3331.
For Colloquium Registration Information contact Susan Johnson @ (506) 432-2010 or Mike Parkhill @ (506) 547-2070; email <mparkhill@gnb.ca>

Friday, February 7, 1997
10:00AM-7:00PM Registration and Poster set-up - Cumberland II and Hall
11:00AM Vehicles leave for mine tour, be at front desk of the Wandlyn by 10:45
12:30-4:30PM Mine tour of Potash Company of Saskatchewan, N.B. Division underground potash mine in Sussex, NB. Pre- registration is required. A maximum of 18 participants. No beards allowed underground and please dress in field clothes. Safety boots will be provided. Arrival back @ Wandlyn at 4:30.
1:00-5:00PM Short Course An Introduction to Practical Lithogeochemistry - Cumberland I
Chairman - Jim Walker
Scott Swinden - Nova Scotia Department of Natural Resources
David Lentz - New Brunswick Department of Natural Resources & Energy
3:00-3:20PM COFFEE - Sponsored by the Potash Corporation of Saskatchewan
4:30-5:30PM Atlantic Geology Editors Meeting - Salon C
5:30-6:45PM AGS Executive and Council Meeting - Salon C
7:00-8:50PM Special Session: Mineral Exploration and Recent Discoveries in Atlantic Canada - Cumberland I
9:00-10:00PM General Session: Current Research in the Atlantic Provinces I - Cumberland I
10:00-Midnight Poster Session and Cash Bar - Cumberland II and Hall

Saturday, February 8, 1997
8:00AM-12:20AM Special Session: Current Environmental Research in the Earth Sciences I - Cumberland I
8:00-11:20AM General Session: Current Research in the Atlantic Provinces II - Salon A-B
12:20-2:00PM Annual General Meeting and Luncheon - Salon A-B
2:00-3:20PM Special Session: Current Environmental Research in the Earth Sciences II - Cumberland I
3:40-5:00PM General Session: Current Research in the Atlantic Provinces III - Cumberland I
5:00-5:30PM Poster Session - Cumberland II and Hall
5:00-7:00PM Cash Bar - Outside Cumberland I
5:30-6:30PM APICS Earth Sciences Committee Meeting - Salon C
7:00PM Awards Banquet and Social: Cumberland I and II
Speaker Dr. Graham Williams 
"Where have 25 years gone?"

Sunday, February 9, 1997
9:00AM The Last Billion Years Meeting - Salon C

HOWARD STREET ROBINSON FUND LECTURE

GEOLOGICAL ASSOCIATION OF CANADA

Friday night 7:00 - 8:50 PM

The Mesoproterozoic Nain Plutonic Suite in eastern Canada, and the setting of the Voisey's Bay Ni-Cu-Co sulphide deposit (Mineral Exploration and Recent Mineral Discoveries in Atlantic Canada)
Bruce Ryan

Newfoundland Department of Mines and Energy, Geological Surveys Branch,
P.O. Box 8700, St. John's, Newfoundland A1B 4J6, Canada
In 1993, a world-class magmatic nickel-copper-cobalt massive sulphide deposit, containing probably in excess of 150 million tonnes, was discovered near Voisey's Bay, Labrador. The mineralization is hosted by rocks of the Nain Plutonic Suite (NPS), a 1350 Ma to 1290 Ma assemblage of coalesced basic and silicic plutons emplaced across an 1860 Ma collisional suture between the Archean Nain Province and the Paleoproterozoic Churchill Province. The NPS covers 20,000 square kilometres and encompasses a diverse group of rocks of which the main "families" are anorthosite, troctolite, diorite and granite. These rocks represent a significant magmatic contribution to a tectonically quiescent crust, probably generated in an intracontinental extensional zone above a mantle plume.

The Voisey's Bay deposit sits within a massive troctolite, the Reid Brook intrusion, interpreted to be the oldest pluton of this type within the NPS. The Voisey's Bay mineralization is disposed as intercumulus concentrations and as massive sulphide (pyrrhotite, pentlandite, and chalcopyrite) zones in several settings, including a steeply-dipping dyke, a bowl-shaped "ovoid", and a bifurcating lens ("Eastern Deeps") at the base of the intrusion. The Ni-Cu-Co mineralization represents gravitational accumulation and concentration of a sulphide liquid in the plutonic environment, coeval with formation of the Reid Brook intrusion. The sulphide liquid is interpreted to have been an integral part of the silicate magma at the time the Reid Brook intrusion was emplaced. The formation of the sulphide liquid is interpreted to be a result of contamination of the metal-laden Reid Brook magma by crustal-derived sulphur from underlying metasedimentary rocks.

SHORTCOURSE:

AN INTRODUCTION TO PRACTICAL LITHOGEOCHEMISTRY

Friday afternoon 1:00 - 5:00 PM

Dave Lentz1 and Scott Swinden2

1New Brunswick Geological Surveys Branch, P.O. Box 50, Bathurst, New Brunswick E2A 3Z1, Canada

2Nova Scotia Department of Natural Resources, P.O. Box 698, Halifax, Nova Scotia B3J 2T9, Canada
This 1/2 day course will cover some of the basics of using rock geochemistry for the non-expert. Sample selection, powder preparation, analytical considerations, use of standards, as well as precision and accuracy will be discussed. This is followed by a review of the various types of information that can be obtained from lithogeochemical studies including, petrogenesis, palaeotectonic, and depositional setting of volcanic and sedimentary rocks with due consideration of the effects of syngenetic hydrothermal alteration and syn-kinematic metamorphism/ metasomatism. The remaining half of the course will present examples of the use of mafic and felsic volcanic geochemistry in the determination of palaeotectonic and depositional settings of VMS deposits in the Phanerozoic, the purpose of which is to highlight the key geodynamic features that influence the lithogeochemical signature of volcanic and associated plutonic rocks.
TECHNICAL SESSIONS - FRIDAY EVENING  * Student Presentations
SPECIAL SESSION: Mineral Exploration and Recent Discoveries in Atlantic Canada - Cumberland I
Chairs: Susan Johnson & Michael Parkhill
7:00 -ALAN MORGAN -  Geological Association of Canada 50th anniversary celebrations
7:10 -STEVEN R. McCUTCHEON -  Mineral exploration and development highlights in northern New Brunswick
7:30 -RALPH STEA and PHIL FINCK -  Discovery of Cretaceous basins in Nova Scotia and the potential for kaolin mining
7:50 -BRUCE RYAN -  -Howard Street Robinson Fund Lecture Tour
The Mesoproterozoic Nain Plutonic Suite in eastern Canada, and the setting of the Voisey's Bay Ni-Cu-Co sulphide deposit
8:50 -10 minute break
GENERAL SESSION: Current Research in the Atlantic Provinces I - Cumberland I
Chairs: Susan Johnson & Michael Parkhill
9:00 -JOHN C. LENNON*, P.H. REYNOLDS, and D.C. ROY - 40Ar/39Ar ages and the paragenetic sequences in a multi-staged hydrothermal breccia in central Maine
9:20 -GREG PEMBERTON* -  Dating of alteration at the Radomiro Tomic porphyry copper deposit, northern Chile by the high-precision 40Ar/ 39Ar method
9:40 -LINDSAY A. DUNN* and RON K. PICKERILL -  Facies correlations within the Ordovician Pointe, de La Martinière Formation, Orléans Group, Québec.

NOTES
  1. Poster space is 4'x 4' unless other arrangements are made and presenters must bring there own pins. Set up posters as soon as possible after arrival. The student poster award will be presented at the Banquet. Student presenters will be notified of a time to present their posters to the judges. Please be at your poster to answer questions during the scheduled times. Please take your posters down by 5:30PM on Saturday.
  2. Speakers will have 20 minutes including time for questions, and the sessions will be kept on schedule by the Chairs, as it is required to allow judging of the high number of student presentations. The Rupert MacNeil student award will be presented at the Banquet.
  3. Speakers will have two slide projectors, one overhead projector and a laser pointer available. There will be a slide preview room available (Salon A-B on Friday and Salon D on Saturday). Have your slides to the projectionist ASAP.
  4. The Wandlyn has asked for some notice for the meals. Buy your Luncheon and Banquet tickets by 11:00PM on Friday, February 7th.
SATURDAY MORNING - Cumberland I
SPECIAL SESSION: Current Environmental Research in the Earth Sciences I 
Chair: Don Fox
8:00 - DARRYL A. PUPEK* and BRUCE E. BROSTER -  An occurrence of perchloroethylene and implications to groundwater resources at Sussex, New Brunswick
8:20 - KEVIN J. DOYLE*, KATE MORAN, TOM MARTEL, and GARY ELLERBROK -Determination of bulk permeability within the Morien Group using the forcing of ocean tides in the Sydney Basin in Cape Breton, Nova Scotia
8:40 - JENNIFER M. VAN DER GAAG*, A.T. MARTEL and K. MORAN -  Characterization of outburst channel sandstones in the Phalen Colliery, Cape Breton, Nova Scotia
9:00 - ANGELA M. KENNEDY*, A.T. MARTEL and J. SHIMALD - Compartmentalization of formation waters in the Prince Colliery, Cape Breton, NS
9:20 - TOM MARTEL, A. KENNEDY and M.R. GIBLING -  Saline brines of the Sydney Basin: origin as evaporative Windsor residues?
9:40 - PRASANTA K. MUKHOPADHYAY, G. LAJEUNESSE, and A.L. CRANDLEMIRE -  Speciation of elements in the feed coal and combustion residues from the Lingan Power Plant, Sydney, Nova Scotia
10:00 - COFFEE -  Sponsored by Noranda Mining and Exploration
Chair: Cathy Ryan
10:20 - RACHEL A. JONES* and DON FOX -  Relative chemical and biological oxidation of sulphides in the Meguma Supergroup, Nova Scotia: the role of mineralogy, texture and composition
10:40 - DON FOX* -  First reported occurrence of schwertmannite related to acid rock drainage (ARD) from the Halifax slates, Nova Scotia
11:00 - JOANNA C. SPENCER BROWN* and DON FOX - Sustainable development and the precautionary principle: implications for acid rock drainage regulations in Nova Scotia
11:20 - TOM AL -  The hydrogeology of a tailings impoundment formed by central discharge of thickened tailings: implications for tailings management
11:40 - PRASANTA K. MUKHOPADHYAY, M.A. KRUGE, and C.P.M. LEWIS -  Fingerprinting natural and anthropogenic organic matter in recent sediments from Lake Ontario
12:00 - HUGO BELTRAMI -  Ground temperature histories from geothermal data: evidence of recent climatic change
12:20 - 2:00 -LUNCHEON AND AGS ANNUAL GENERAL MEETING - Salon A-B
SATURDAY MORNING - Salon A-B
GENERAL SESSION: Current Research in the Atlantic Provinces IIChair: David Piper
8:00 - PAUL W. DURLING and FRANÇOIS J.Y. MARILLIER - Overview of seismic reflection results from the western Maritimes Basin
8:20 - JOHN H. CALDER, M.R. GIBLING, A.C. SCOTT and D.M. SKILLITER -  The Carboniferous Joggins section reconsidered: recent paleoecological and sedimentological research
8:40 - DAVE G. KEIGHLEY and RON K. PICKERILL  -A reassessment of ichnofacies, with emphasis on those present in nonmarine strata
9:00 - RICHARD J. HORNE, ROBERT C. BOEHNER, M. STEPHEN KING and PAUL HARVEY - Geological and geophysical interpretation of the Rawdon Fault, central Meguma Zone, Nova Scotia
9:20 - JOHN W.F. WALDRON and W. BLEEKER -  Late Archean turbidites in the southern Slave province: very like the Meguma
9:40 - DOROTHY I. GODFREY-SMITH, ALEXANDER GRIST, and PATRICIA SCALLION -  ESR and OSL geochronology of the East Milford, Nova Scotia, Canada, mastodon locality, and the timing of the Illinoian-Sangamon transition
10:00 -COFFEE
Chair: Ron Pickerill
10:20 - DAVID R. LENTZ -  High-phosphorus, S-type Middle River rhyolite, Tetagouche Group, northeastern New Brunswick: chemostratigraphic and petrogenetic implications
10:40 - GEORGIA PE-PIPER -  Origin of zeolites in zoned amygdales from the North Mountain Basalt, Nova cotia
11:00 - DANIEL J. KONTAK, RICHARD J. HORNE, HAMISH A. SANDEMAN and DOUGLAS A. ARCHIBALD -  A 40Ar/39Ar study of whole rock slate samples from Meguma gold deposits, Nova Scotia: implications for the timing and duration of auriferous quartz vein formation
SATURDAY AFTERNOON
SPECIAL SESSION: Current Environmental Research in the Earth Sciences II - Cumberland I 
Chair: Tom Al
2:00 -SCOTT LISTER* and IAN S. SPOONER -  A proposal to judge environmental change on Bon Portage Island, Nova Scotia using landsat thematic mapper imagery
2:20 -KELLY A. JANSSENS* and TOM A. AL -  Geochemical changes in the soil profile due to deforestation
2:40 -LISA KELLMAN* and CLAUDE HILLAIRE-MARCEL - Nitrate dynamics in a heavily fertilized agricultural watershed: identification of sources and reduction processes using natural abundances of N-15
3:00 -CATHY RYAN -  Groundwater contamination by agricultural nitrate: A ?multi-point source' conceptual model
3:20 -COFFEE -  Sponsored by Brunswick Mining and Smelting
GENERAL SESSION: Current Research in the Atlantic Provinces III - Cumberland I Chair: Bruce Broster
3:40 -EMILY K. GESNER*, P. REYNOLDS and R.A. JAMIESON -  40Ar/39Ar thermochronology of the southeast Central Gneiss Belt, Grenville Province, Ontario
4:00 -JO PRICE* -  Geology of the Belle Côte Road orthogneiss, Cape Breton Highlands, Nova Scotia
4:20 -IAN S. SPOONER -  An investigation of late-glacial lacustrine sediments from western Nova Scotia: evidence of ice-free conditions during Younger Dryas time
4:40 -PETER S. GILES -  Windsor Group stratigraphy, Magdalen Islands, Quebec
POSTERS: Current Research in the Atlantic Provinces - Friday 6:00PM-12:00PM; Saturday 8:00AM-5:30PM, Cumberland II and Hall
ALAN J. ANDERSON and ROBERT A. MAYANOVIC -  High temperature X-ray absorption analysis of transition metal complexes in magmatic fluids
JENNIFER L. BATES, HOWARD V. DONOHOE JR., IRIS HARDY, HENRIETTA MANN, KATHY SILVERSTEIN, GRAHAM L. WILLIAMS -  EdGeo workshops: continuing earth science assistance for Nova Scotia teachers
CRAIG BURNS* -  Stratigraphy and mineralogy of the Goldenville Group-Halifax Group transition (GHT) of the Meguma Supergroup at Caribou gold district (drillcore LL81-5A), Nova Scotia
KEVIN COFLIN, JOHN SHIMELD, MARK WILLIAMSON and ZEHUI HUANG -  Innovations in imaging sub-surface geological features from 3-D seismic
LORI A.COOK* -  Large slump structures in the Macumber Formation, basal Windsor Group, Ingonish area, northeastern Cape Breton
TAMMY L. CRAWFORD* -  Stratigraphy of the Upper Carboniferous Colindale Member of the Port Hood Formation, Western Cape Breton Island, Nova Scotia
CRAIG DOUCETTE* and GEORGIA PE-PIPER -  Digital mapping of the Wentworth plutonic complex, Cobequid Highlands, Nova Scotia and petrology of its felsic phases
LESLIE R. FYFFE -  Revised stratigraphy of the Rollingdam area, (NTS 21 G/6), southwestern N.B.
LESLIE R. FYFFE, STEVEN R. MCCUTCHEON and REGINALD A. WILSON -  Miramichi-Tetagouche stratigraphic relationships
CODY S. GARLIE and TREVOR BELL -  Possible raised marine sediments on the east coast of the Avalon Peninsula, Newfoundland
SUSAN J. GOWER -  Geology and geochemistry of the Upsalquitch Lake Anticlinorium, northwestern Bathurst Camp, New Brunswick
BILL GRAY* -  Seafloor pockmarks in Passamaquoddy Bay: Evidence for a biogenic methane origin
ALEXANDER M. GRIST, MARCOS ZENTILLI, MILTON GRAVES, and MICHAEL COLLINS -  Fission track research in Halifax, Nova Scotia: technical procedures and research directions in a changing fiscal environment
SUSAN C. JOHNSON -  Revisions to Carboniferous Stratigraphy on Maringouin Peninsula, Cumberland Subbasin, New Brunswick
JULIET C. LUIZ* and DOROTHY I. GODFREY-SMITH -  Comparative thermoluminescence dating of Quaternary North American obsidians and mafic lavas
GREG LYNCH, PETER S. GILES and C. DEBLONDE -  Magdalen Basin NATMAP Program preliminary 1:250 000 compilation of central Nova Scotia and Prince Edward Island
SANDRA MARSHALL* and IAN S. SPOONER -  An investigation of drumlins in southwestern Nova Scotia: Distribution, orientation and mode of formation
LISA J. MILLER* and GEORGIA PE-PIPER -  Zeolite assemblages in the North Mountain Basalt along the north shore of the Minas Basin, Nova Scotia
PHIL MOIR, MARK WILLIAMSON, KEVIN COFLIN and JENNIFER BATES -  Responding to increased demand for east coast geoscientific data information and knowledge
DAVID J. MOSSMAN, ROBERT G. GRANTHAM, and FALKO LANGENHORST -  The nature of the Triassic-Jurassic transition, Bay of Fundy region, eastern Canada
MICHAEL A. PARKHILL and ROD A. KLASSEN -  Ice-flow history, eastern Bathurst Mining Camp
GEORGIA PE-PIPER and DAVID J.W. PIPER -  New draft 1:50 000 digital maps of the Cobequid Highlands
DAVID J.W. PIPER and GAYLE CHAPMAN -  Bedrock and Quaternary geology of the Scotian Shelf southwest of Yarmouth, N.S.
GRAHAM WILLIAMS, JENNIFER BATES, JOHN CALDER, ROB FENSOME, LAING FERGUSON, HENRIETTA MANN, DAVID PIPER, and JOHN WADE -  The Last Billion Years: A Geological History of Maritime Canada
MARK A. WILLIAMSON and PHIL MOIR -  Petroleum geoscience research in support of Canada's east coast hydrocarbon energy option

 
 
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