(Q28988)
Statements
of the Moyie-Dibble Creek Fault between the Early Cambrian and Late Devonian. Subsequent uplift of
site, mineralization is hosted in marble of the Lower Cambrian Badshot Formation. There are three ore
parautochthonous terrane comprised of Helikian to Middle Devonian age strata. The stratigraphy of the area
Moyie-Dibble Creek Fault between the Early Cambrian and Late Devonian. Subsequent uplift of the area to the south
igneous rocks in the area. Andesitic volcanic rocks are Devonian in age, and hosted in the Mount Forster
(Laramide Orogeny), and Eocene trans-tension. Helikian to Devonian extension and passive margin development
Cordilleran Orogeny, from the Middle Jurassic to Late Cretaceous, these strata were thrust eastwards and
with the Laramide Orogeny, spanning the Jurassic to Cretaceous, 160-60 Ma (Lydon, 2007). The East Kootenay
this period is related to a Late Jurassic to Early Cretaceous event of sinistral transpression and
Cretaceous event of sinistral transpression and Late Cretaceous to Palaeocene dextral transpression;
events, granitic plutonism occurred during the Mid-Cretaceous, 115-90 Ma (Cook and Van der Velden,
cratonic North America during the Late Jurassic to Early Cretaceous (Cook and Van der Velden, 1995; Paiement
propagated eastward during a period of Jurassic to Cretaceous contraction. This contraction resulted
the Proterozoic sedimentary pile. During the Late Cretaceous and Early Tertiary, deformation further
ultramafic dykes. The Horsethief Creek Batholith is Middle Cretaceous in age; with intrusive ages that range
This structure was subsequently plugged by the Late Cretaceous Horsethief Creek Batholith. The root
compressional structures are transtensional late Cretaceous to Tertiary structures. Pope (1990) notes
associated with felsic intrusions, correlated to the Cretaceous Bayonne Magmatic Suite, that intrude
lead and zinc veins that are interpreted to be Late Cretaceous to Early Tertiary in age. Proterozoic
Supergroup. In contrast, mineralization associated with Cretaceous to Tertiary veins are interpreted to
the host rocks along the Kootenay Arc during the Cretaceous and are correlated to the Bayonne Magmatic
from the Delphine Panel, subsequently plugged by the Cretaceous Horsethief Creek Batholith to the north
share a similar tectonic history during the late Cretaceous to Tertiary when mineralization in these
These faults are likely Tertiary in age as they cut Cretaceous age folds and thrust faults and appear
sequences. During the Cordilleran Orogeny, from the Middle Jurassic to Late Cretaceous, these strata were thrust
associated with the Laramide Orogeny, spanning the Jurassic to Cretaceous, 160-60 Ma (Lydon, 2007). The
2007). Deformation during the Laramide Orogeny (Late Jurassic to Tertiary) was dominated by compressional
features found within the Purcell Anticlinorium are Jurassic to Tertiary in age, and formed in association
Deformation during this period is related to a Late Jurassic to Early Cretaceous event of sinistral
terrane with cratonic North America during the Late Jurassic to Early Cretaceous (Cook and Van der Velden,
faults were propagated eastward during a period of Jurassic to Cretaceous contraction. This contraction
convection. The second event occurred during the Late Jurassic to Tertiary Laramide Orogeny. Porphyry-style
HelikianDevonian extension and development of a passive margin, Jurassic-Paleocene contraction (Laramide Orogeny),
stratigraphic thickness of units across fault systems. Jurassic-Paleocene contraction is characterized
kimberlitic to lamprophyric affinities, and are Permo-Triassic (245 Ma) in age. These small intrusive
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