Age determinations and geological studies, K-Ar isotopic ages, report 12
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Age determinations and geological studies, K-Ar isotopic ages, report 12

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Published by Information Canada in Ottawa .
Written in English

Subjects:

Places:

  • Canada.

Subjects:

  • Potassium-argon dating.,
  • Geology -- Canada.

Book details:

Edition Notes

StatementR. K. Wanless ... [et al.].
SeriesPaper - Geological Survey of Canada ; 74-2, Paper (Geological Survey of Canada) ;, 74-2.
ContributionsWanless, R. K.
Classifications
LC ClassificationsQE185 .A42 no. 74-2, QE508 .A42 no. 74-2
The Physical Object
Pagination72 p. ;
Number of Pages72
ID Numbers
Open LibraryOL4672005M
LC Control Number77562850

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  A K-Ar age of x years has been determined for a sample of type A crystalline rock (57,34). The presence of an anomalously large quantity of 4°Ar, in a sample of type C breccia (65,35) precluded the calculation of its K-Ar age. Both of the rock types are characterized by low Rb/Sr ratios and consequently low 87Sr/86Sr values. The U-Th-Pb results for a sample of type D fines Cited by: 6. Stevens, R.D., DeLabio, R.N., and Lachance, G.R., a. Age determinations and geological studies, K-Ar isotopic ages, Rep Geological Survey of Canada Paper 81–2, 56p. Stevens, R.D., DeLabio, R.N., and Lachance, G.R., b. Age determinations and geological studies. K-Ar isotopic ages, Rep Geological Survey of Canada Paper Hunt, P.A. and Roddick, J.C. (): A compilation of K-Ar ages. Report in Radiogenic Age and Isotopic Studies Report 3; Geol. Surv, Can„ Pap, pi Hunt, P.A. and Schledewitz, D C.P. (): IJ-Pb zircon age for a quartz porphyry in the Thunderhill . Geothermics, Vol. 16, No. 3, pp. , Printed in Great Britain /87 $ + Pergamon Journals Ltd. CNR. K-Ar AGE AND STRONTIUM ISOTOPIC COMPOSITION OF THE TENGCHONG VOLCANIC ROCKS, WEST YUNNAN PROVINCE, CHINA MU ZHIGUO,* G. H. CURTIS,t LIAO ZHIJIE* and TONG WEI* * Department of Geology, Peking University, Beifing, China and t Department of Geology Cited by:

Stevens, R.D., Delabio, R.N. and Lachance, G.R., ‘Age determinations and Geological Studies, K-Ar isotopic ages, Report 15’ Geological Survey of Canada Paper 81–2, 56 p. Google Scholar Studemeister, P.A., ‘The greenschist facies of an Archean assemblage near Wawa, Ontario’ Canadian Journal of Earth Scien –Cited by: Received Febru 1 This article is one of a series of papers published in this CJES Special Issue on the theme of Mesozoic–Cenozoic geology of the Scotian Basin. Canadian Journal of Earth Sciences Age determinations and geological studies, K-Ar isotopic ages, report Geological Survey of Canada, Paper 67 pp Cited by:   The 3,±72 m.y. Uivak gneisses of northern Labrador consist of two major rock suites: regionally developed layered granodioritic gneisses (Uivak I suite) interpreted as derived from earlier tonalitic igneous parents by the massive introduction of potassium and rubidium, and a less extensive group of iron-rich porphyritic granodiorites and ferro-diorites (Uivak II suite) emplaced after at Cited by: BC age A A database of isotopic age determinations for rock units from British Columbia. British Columbia Ministry of Energy, Mines and Petroleum Resources, British Columbia Geological Survey Open File

[AGE_MA] - The interpreted age of the rock or mineral given in millions of years (Ma). Pre ages have been corrected to the recommended decay constants of .   This flat tabular format is from Breitsprecher, K. and Mortensen, J.K., BCAge A - a database of isotopic age determinations for rock units from British Columbia. British Columbia Ministry of Energy and Mines, Geological Survey, Open File (Release ). Additional Information. Author: N. Wodicka. Introduction. This compilation represents published geochronological information on rocks from Trans-Hudson Orogen and adjacent Archean Rae craton in Baffin Island, Nunavut. Age determinations and geological studies; potassium-argon isotopic ages. Report 6, Geological Survey of Canada, Paper , a Age Determinations and Geological Studies, K-Ar Isotopic Ages.