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TitleConodonts and their colour alteration index values from carbonate xenoliths in four kimberlites on Hall Peninsula, Baffin Island, Nunavut
 
AuthorZhang, S; Pell, J
SourceCanada-Nunavut Geoscience Office Summary of Activities 2016; Canada-Nunavut Geoscience Office, Summary of Activities (2016), 2016 p. 1-12 Open Access logo Open Access
LinksOnline - En ligne
Image
Year2016
Alt SeriesEarth Sciences Sector, Contribution Series 20160225
PublisherCanada-Nunavut Geoscience Office
Documentserial
Lang.English
Mediapaper; on-line; digital
File formatpdf
ProvinceNunavut
NTS26B
AreaHall Peninsula; Baffin Island
Lat/Long WENS -68.0000 -66.0000 65.0000 64.0000
Subjectsgeneral geology; stratigraphy; drillholes; kimberlites; conodonts; colour alteration index; Chidliak kimberlite province; Precambrian; Paleozoic
Illustrationslocation maps; satellite imagery; geological sketch maps; photographs
ProgramCanada-Nunavut Geoscience Office, Funding Program
AbstractHall Peninsula, located on southeastern Baffin Island, Nunavut, is host to the newly discovered Chidliak kimberlite province. The region is underlain by Precambrian basement and the original Paleozoic cover has been removed by erosion. The earlier presence of Paleozoic carbonate strata is indicated by the presence of carbonate xenoliths - many of which contain numerous conodont microfossils - Lin the Chidliak kimberlites. The present study is a continuation of work done on conodonts recovered fromHall Peninsula kimberlites and their colour alteration index (CAI) values. This paper summarizes the results recovered from12 drillholes in 4 kimberlites, including 10 new drillholes in 3 of the 11 kimberlites previously studied and 2 drillholes in a kimberlite that have not been previously reported on. Of the 59 collected samples, 43 contain conodonts, from which nearly 600 identifiable conodont specimens have been recovered with conodont CAI values ranging from 4 to 8. These provide additional data to understating the kimberlite emplacement processes and cooling history.
Summary(Plain Language Summary, not published)
The Chidliak kimberlite province has been discovered on the Hall Peninsula, southern Baffin Island, Nunavut. All bed rocks on the Hall Peninsula are Precambrian metamorphic rocks, as the original Paleozoic cover has been removed by erosion. The earlier presence of Paleozoic carbonate strata is indicated by the presence of carbonate xenoliths, many of which contain numerous conodont microfossils, in the Chidliak kimberlites. The present study is a continuation of work done on conodonts recovered from the Hall Peninsula kimberlites and their Color Alteration Indies (CAI). This report summaries the results recovered from 12 drill holes in four kimberlites, including 10 new drill holes in three of the 11 kimberlites previously studied and two in a kimberlite that have not been reported on. Of the 59 collected samples, 43 yield conodonts, from which nearly 600 identifiable conodont specimens have been recovered, with CAI values 4-8. These provide additional data to understating the kimberlite emplacement processes and cooling history.
GEOSCAN ID299337

 
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