000	00000nam 2200000za 4500
001	9.859096
003	CaOODSP
005	20251031142448
007	cr |||||||||||
008	180713s2018    oncabd  ob   f000 0 eng d
040	|aCaOODSP|beng
043	|an-cn-qu
086	1 |aM183-2/8385E-PDF
100	1 |aPinet, N.
245	14|aThe ups and downs of the Canadian Shield. |n2, |pPreliminary results of apatite fission-track analysis from a 3.6 km vertical profile, LaRonde mine, Quebec |h[electronic resource] / |cN. Pinet.
260	|a[Ottawa] : |bNatural Resources Canada, |c2018.
300	|a43 p. : |bcol. charts, col. ill., maps (some col.).
490	1 |aOpen file ; |v8385
504	|aIncludes bibliographical references (p. 20-22).
520	3 |a"The low-temperature (120-60°C) thermal history of eight samples from a 3.6 km vertical depth profile in the LaRonde Mine (Archean Abitibi greenstone belt, Quebec) has been investigated using apatite fission-track (AFT) analysis. All samples correspond to greywackes of the Cadillac Formation. The AFT ages show a clear younging relationship with depth (increasing temperature), as expected for samples that maintained constant relative depths over time. Ages vary from 413 ± 51 Ma near the surface, to 148.5 ± 6.3 Ma for the deepest sample. Forward and inverse modeling indicate that a scenario with a constant temperature or minor heating during the Paleozoic better accounts for the fission track length distributions than a scenario with a constant cooling rate. These results support the possibility that the Abitibi region was covered by a sedimentary succession of moderate thickness during the Paleozoic"--Abstract, p. 2.
693	4|aShields (Geology)
693	4|aFission track dating
693	4|aQuébec (Province)
710	1 |aCanada. |bNatural Resources Canada.
710	2 |aGeological Survey of Canada.
830	#0|aOpen file (Geological Survey of Canada)|v8385.|w(CaOODSP)9.506878
856	40|qPDF|s6.70 MB|uhttps://publications.gc.ca/collections/collection_2018/rncan-nrcan/m183-2/M183-2-8385-eng.pdf
986	|a308067