TY - JOUR
T1 - Stratigraphic comparison of the Lardeau and Covada Groups
T2 - implications for revision of stratigraphic relations in the Kootenay Arc
AU - Smith, M. T.
AU - Gehrels, G. E.
PY - 1992
Y1 - 1992
N2 - The Lardeau Group is a heterogeneous assemblage of lower Paleozoic, outer continental margin strata present in the Kootenay Arc in southeastern British Columbia. A correlation between the Lardeau Group and the Covada Group and Bradeen Hill assemblage, both in north-eastern Washington is proposed. The latter contain the same stratigraphic elements, in the same structural order, as those of the Lardeau Group. However, the sense of facing, and hence the stratigraphic sequence in the Covada Group and Bradeen Hill assemblage, is reversed in relation to the Lardeau Group, with the quartzo-feldspathic wacke unit the oldest and slate and argillate the youngest. Because the degree of preservation of the units in northeastern Washington is superior to that of the Lardeau Group, it is suggested that: 1) the Lardeau Group may be inverted relative to the sequence as originally defined; 2) the Lardeau Group may range from Late Cambrian to Devonian; and 3) further work is warranted to test this hypothesis. -from Authors
AB - The Lardeau Group is a heterogeneous assemblage of lower Paleozoic, outer continental margin strata present in the Kootenay Arc in southeastern British Columbia. A correlation between the Lardeau Group and the Covada Group and Bradeen Hill assemblage, both in north-eastern Washington is proposed. The latter contain the same stratigraphic elements, in the same structural order, as those of the Lardeau Group. However, the sense of facing, and hence the stratigraphic sequence in the Covada Group and Bradeen Hill assemblage, is reversed in relation to the Lardeau Group, with the quartzo-feldspathic wacke unit the oldest and slate and argillate the youngest. Because the degree of preservation of the units in northeastern Washington is superior to that of the Lardeau Group, it is suggested that: 1) the Lardeau Group may be inverted relative to the sequence as originally defined; 2) the Lardeau Group may range from Late Cambrian to Devonian; and 3) further work is warranted to test this hypothesis. -from Authors
UR - http://www.scopus.com/inward/record.url?scp=0027042337&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0027042337&partnerID=8YFLogxK
U2 - 10.1139/e92-105
DO - 10.1139/e92-105
M3 - Article
AN - SCOPUS:0027042337
VL - 29
SP - 1320
EP - 1329
JO - Canadian Journal of Earth Sciences
JF - Canadian Journal of Earth Sciences
SN - 0008-4077
IS - 6
ER -