Earth and Environmental Sciences: Recent submissions
Now showing items 241-260 of 831
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Ancient Submarine Canyons. and Fans of the Carson Basin, Grand Banks, Offshore Newfoundland, Canada
(1999-04-15)The Carson Basin lies beneath the Grand Banks, offshore Newfoundland, and is composed of several depocenters, the deepest of which holds over 7 km of Mesozoic and Cenozoic strata. To date only four exploration wells have ... -
EXPERIMENTAL EVALUATION OF SUBAQUEOUS DISPOSAL OF ACID GENERATING SULPHIDE MINERALS IN THE MEGUMA SUPERGROUP, SOUTHERN NOV A SCOTIA
(1999-04-15)Development and construction projects that require the disturbance and excavation of sulphide rich bedrock in Halifax and southern Nova Scotia produce large quantities of waste rock material. This material poses a high ... -
RECONSTRUCTION OF POLLUTION HISTORY AT MILL COVE, BEDFORD BASIN USING BENTHIC FORAMINIFERA
(1999-04-15)The comparison of data from two cores collected in Bedford Basin, adjacent to the Mill Cove Sewage Treatment Plant, in August 1998, to data from 1968, 1993 and 1996, allows the impact of pollution to be determined. Benthic ... -
Cambrian Multichambered Foraminifera from the Halifax and Goldenville Groups of the Meguma Supergroup, Nova Scotia
(1998-04-15)Foraminifera in the Cambrian are rare; only ten genera have been recorded and these were all simple tubular and branching unilocular forms found in West Africa. The discovery of an organic lens within the Goldenville ... -
VELOCITY STRUCTURE OF A METHANE HYDRATE STABILITY ZONE, OFFSHORE VANCOUVER ISLAND
(1998-04-15)The occurrence of methane hydrates within marine sediments of the accretionary prism of the Cascadia Margin, offshore Vancouver Island has been inferred by the occurrence of a bottom simulating reflector (BSR), which is ... -
MIGMATITES OF THE MUSKOKA DOMAIN, GRENVILLE PROVINCE, ONTARIO
(1998-04-15)The Muskoka Domain, Central Gneiss Belt, Grenville Province, Ontario, is characterized by widespread highly migmatitic orthogneisses. The purpose of this study is to describe a variety of migmatites and associated rocks ... -
Seismic Velocities of Crustal Samples from the Tomgat Peninsula and Nain: ECSOOT'96
(1998-04-15)The subsurface geology of central and northern Labrador, as well as the Labrador Shelf, is presently being interpreted through the use of various seismic techniques. In the fall of 1996, LITHOPROBE funded a wide-angle ... -
CHARACTERIZATION OF SEISMIC AMPLITUDE ANOMALIES AT HIBERNIA USING 3D SEISMIC DATA
(1998-04-15)The Chevron et al. Hibernia P-15 well penetrated one of many bright spots and encountered gas. Bright spots are one of four 'direct hydrocarbon indicators' and result from the high acoustic impedance contrast from gas ... -
Morphological Changes in Chezzetcook Inlet: An Historical Study Using Air Photography Composites
(1999-04-15)This thesis provides an analysis of the sedimentological and morphological changes observed in Chezzetcook Inlet from 1766 to 1998 using air photograph composites and maps from 1766 and 1854.This study explores the ... -
ALLUVIAL FAN DEPOSITS OF THE CARBONIFEROUS GRANTMIRE FORMATION IN DRILL HOLE PE 83-1, SYDNEY BASIN, NOVA SCOTIA
(1999-04-15)The Early Carboniferous (Tournaisian) Grantmire Formation belongs to the Horton Group and is ~800 m thick, based on exposures and drill core in the northern part of the Sydney Basin onshore. The 503 m measured section ... -
EXPERIMENTAL INVESTIGATION OF CATION EXCHANGE BETWEEN FORMATION WATERS AND SANDSTONES AND SHALES, PHALEN COLLIERY, CAPE BRETON
(1998-04-15)The Phalen Colliery mines coal from the Phalen seam in the Upper Carboniferous Sydney Mines Formation. Flooding events in the colliery since 1992 warrant an investigation of the origin and chemical history of the inflow ... -
Structural Geology and Deformation Of The Meguma Group At The Northeastern Contact Of The South Mountain Batholith, Halifax Area, Nova Scotia
(1997-04-15)Structural mapping and petrographic analyses were conducted to document the structural geology and deformation of the Meguma Group country rocks adjacent to the Halifax Pluton of the South Mountain Batholith (SMB) near ... -
SILICATE AND SULPHIDE MINERAL ASSEMBLAGES AND METAMORPHIC FABRICS FROM PELITES IN THE CONTACT AUREOLE OF THE SOUTH MOUNTAIN BATHOLITH, HALIFAX AREA, NOVA SCOTIA
(1998-04-15)Contact metamorphism resulting from intrusion of the South Mountain Batholith (SMB) at 372 Ma produced textural and mineralogical changes in rocks of the Meguma Supergroup. A detailed petrographic study of the contact ... -
CHARACTERIZATION OF OUTBURST CHANNEL SANDSTONES IN THE PHALEN COLLIERY, CAPE BRETON, NOV A SCOTIA
(1997-04-15)The Phalen Colliery of New Waterford, Cape Breton, Nova Scotia is currently mining coal from the Phalen Seam of the Sydney Mines Formation, part of the offshore Carboniferous Sydney Basin. Since opening in 1984, the ... -
DATING OF ALTERATION AT THE RADOMIRO TOMIC PORPHYRY COPPER DEPOSIT, NORTHERN CHILE BY THE HIGH PRECISION 40Ar/39 Ar METHOD.
(1997-04-15)The Radomiro Tomic (RT) porphyry copper deposit is located approximately 8-lO km north of the Chuquicamata mine and 245 km northeast of the port city of Antofagasta. Estimates place the deposit at over 800 million tonnes ... -
Compartmentalization of Formation Waters, Prince Colliery, Cape Breton, Nova Scotia
(1997-04-15)The Prince Colliery is located offshore of Point Aconi, Cape Breton , Nova Scotia. The colliery is presently extracting coal from the Hub seam of the Marien Group, part of the Carboniferous Sydney Basin. Directly overlying ... -
RELATIVE RATES OF SULPHIDE OXIDATION BY CHEMICAL AND MICROBIAL MEANS: THE ROLE OF MINERALOGY AND TEXTURE IN ACID ROCK DRAINAGE (ARD) FROM THE MEGUMA SUPERGROUP, NOV A SCOTIA
(1997-04-15)The Meguma Supergroup in Nova Scotia contains abundant sulphide minerals that potentially can cause acid rock drainage (ARD), which is environmentally damaging and expensive to ameliorate. The problem is most intense in ... -
40 Ar/39 Ar thermochronology of the SE Central Gneiss Belt, Grenville Province, Ontario
(1997-04-15)As different minerals begin to retain Ar at distinct "closure temperatures", 40 Ar/39 Ar dating of suites of minerals can be used to reconstruct the cooling history of rocks in ancient orogenic belts. This information ... -
DETERMINATION OF BULK PERMEABILITY WITHIN THE MORIEN GROUP USING THE FORCING OF OCEAN TIDES IN THE SYDNEY BASIN IN CAPE BRETON, NOVA SCOTIA
(1997-04-15)Since November 1992 the Lingan Colliery in the Sydney coalfield has been steadily filling with water. At the same time the water level in the previously flooded 1B region and the No 26 Colliery has been gradually decreasing. ... -
STRATIGRAPHY OF THE GOLDENVILLE GROUP-HALIFAX GROUP TRANSITION (GHT) OF THE MEGUMA SUPERGROUP AT CARIBOU GOLD DISTRICT (DRILLCORE LL81-5A), NOV A SCOTIA
(1997-04-15)Drillcore LL81-5A, recovered from Caribou gold district, Halifax County, Nova Scotia, by Sherritt Gordon Mines Ltd. in 1980, is a 625.40 m-long continuous section of the CambroOrdovician Meguma Supergroup, representing ...