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TitleResource assessment, Eastern Shore Islands Area of Interest (AOI), offshore Nova Scotia
DownloadDownloads
AuthorKing, E L
SourceGeological Survey of Canada, Open File 8455, 2019, 16 pages, https://doi.org/10.4095/313293 (Open Access)
Year2019
PublisherNatural Resources Canada
Documentopen file
Lang.English
Mediaon-line; digital
File formatreadme
File formatpdf (Adobe® Reader®); rtf; xls (Microsoft® Excel®); xlsx (Microsoft® Excel®); dbf; shp
ProvinceNova Scotia; Eastern offshore region
NTS11D/06; 11D/07; 11D/08; 11D/09; 11D/10; 11D/11; 11D/14; 11D/15; 11D/16
AreaEastern Shore Islands; Clam Bay; Moosehead
Lat/Long WENS -65.2500 -62.1667 45.0000 44.3333
Subjectseconomic geology; surficial geology/geomorphology; marine geology; fossil fuels; regional geology; structural geology; geochemistry; mineral deposits; sand, commodity; gravel, commodity; aggregates; gold; placer deposits; strata-bound deposits; vein deposits; resource estimation; drift prospecting; marine sediments; lag deposits; bedrock geology; lithology; metasedimentary rocks; slates; igneous rocks; intrusive rocks; granitic rocks; structural features; folds; anticlines; synclines; faults; joints; marine environments; littoral environment; glacial deposits; tills; moraines; moraine, ribbed; drumlins; sands; gravels; muds; sediment dispersal; structural trends; mining activities; hydrocarbon potential; energy resources; assays; Meguma Supergroup; Goldenville Group; Halifax Group; South Mountain Batholith; Tangier-Harrigan Cove Anticline; Tangier Gold District; Musquodoboit Batholith; Moose River Gold District; Killag Gold District; Gold Lake Gold District; Scotian Shelf; Channel Sand; Eastern Shore Moraine; areas of interest (AOI); marine protected areas (MPA); glaciomarine sediments; dispersal trains; metasandstones; metasiltstones; wind energy; wave-generated energy; geological mapping; Phanerozoic; Cenozoic; Quaternary; Paleozoic
Illustrationslocation maps; geoscientific sketch maps; tables; bar graphs; cross-sections
ProgramGeoscience for New Energy Supply (GNES) - Program Corrdination, Geoscience for New Energy Supply (GNES) - Program Coordination
Released2019 01 09
Abstract(Summary)
An assessment of the minerals potential within the Eastern Shore Islands Area of Interest is presented. There is no hydrocarbon potential. Sand and gravel aggregate occurs with some thickness and continuity locally at the seabed and may include 40 million cubic metres (64 million tonnes). Gold has been, and continues to be mined on land, adjacent the AOI, but only directly from bedrock and not from overburden. It occurs on land in quartz on anticlines in Lower Paleozoic metasediments; these same rocks also underlie the entire AOI. Past mining on adjacent land has been from fluvial placer deposits andapart from past littoral mining at one site on Nova Scotia's South Shore, there has been no commercial extraction from glacial overburden or placer gold at the coast. Gold is present in loose overburden offshore, generally as low value assays (13 ppb average). Overburden assays are largely restricted to the surficial lag. A rough estimate suggests ~830 X103 grams (29 000 oz.) may be present in a littoral placer-like setting, but spread over large areas, generally in thin but contiguous sand and gravel deposits related to marine transgression. Till and voluminous glacimarine mud derived from the latest glacial retreat may also have disseminated gold as does the latest till on land. Gold is reasoned, but not demonstrated, to be richer near the offshore anticlines in relatively short dispersal trains (kms) in till. Whether or not the relatively voluminous but mainly buried proglacial muds are gold-bearing is not known; no further inferences are made. Though the AOI spans a few offshore anticlines, most are not readily differentiated from synclines with existing data coverage.
Summary(Plain Language Summary, not published)
An assessment of the minerals potential within the proposed Eastern Shore Islands AOI is presented. There is no hydrocarbon potential. Aggregate, as sand and gravel occurs with some thickness and continuity locally at the seabed and probably exceeds 60 million tonnes. Gold has been, and continues to be mined on land, adjacent the AOI.A guesstimate suggests ~830 X103 grams (29 000 oz.) in a littoral placer-like setting, but spread over large areas, generally in thin but contiguous sand and gravel deposits related to marine transgression.
GEOSCAN ID313293