NI 43-101 Technical Report for the Seventymile Project in Alaska, United States dated September 2019 (Q29682)
From geokb
an NI 43-101 Technical Report pulled from the GeoArchive collection
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | NI 43-101 Technical Report for the Seventymile Project in Alaska, United States dated September 2019 |
an NI 43-101 Technical Report pulled from the GeoArchive collection |
Statements
continental arc magmatism occurred during the Late Devonian to Early Mississippian, Permian, and Late
been identified, occurring respectively during Late Devonian to Early Mississippian, Permian, and lastly
during the Late Devonian to Early Mississippian, Permian, and Late Triassic to Early Jurassic. Further
the “Seventymile terrane”, a narrow assemblage of Permian-aged submarine ophiolitic ultramafic rocks,
covers a narrow assemblage of Seventymile terrane Permian ophiolitic ultramafic to mafic rocks, other
respectively during Late Devonian to Early Mississippian, Permian, and lastly Late Triassic to Early Jurassic
fabric marking much of the YTT was formed from the mid-Permian to the onset of magmatism in Late Triassic
the “Seventymile terrane”, a narrow assemblage of Permian-aged submarine mafic to felsic volcanic
originally divided the YTT, but closed in the mid-Permian due to short-lived westward subduction under
unit of micaceous dolomitic siltstone containing Permian brachiopods occurs above the volcaniclastic
WNW-ESE-trending portion of a narrow assemblage of Permian Seventymile terrane rocks, bounded to the
mesothermal auriferous quartz vein and gouge zones within Permian basalt and serpentinite. Auriferous targets
dextral displacement of roughly 400 km since the late Cretaceous. Conjugate to the Tintina and Denali
subduction-related magmatism occurred into the mid-Cretaceous, resulting in emplacement of batholithic-scale
silicic volcanic and subvolcanic rocks near a late Cretaceous monzonite. Sample results revealed weakly
displacement of roughly 400 km, occurring since the late Cretaceous. Nelson and Colpron (2007) estimated
of the Black Mountain fault has been intruded by Cretaceous to Tertiary plutonic rocks (Flanders,
dyke that is possibly contemporaneous with the late Cretaceous monzonite intrusion at the Deep Creek
contacts and surrounding country rock of the late Cretaceous monzonite intrusion. Two lines, SVMGPT19-015
Mississippian, Permian, and Late Triassic to Early Jurassic. Further subduction-related magmatism occurred
continental affinity (Foster, 1994), and including Jurassic to Early Tertiary metaigneous rocks. The
Mississippian, Permian, and lastly Late Triassic to Early Jurassic time (Mortensen, 1992). The major, subhorizontal
the rocks of the Yukon-Tanana Terrane during the Jurassic. The Seventymile fault, a splay of the
accreted terrane comprised mainly of Proterozoic to Triassic metaigneous and metasedimentary assemblages,
Devonian to Early Mississippian, Permian, and Late Triassic to Early Jurassic. Further subduction-related
accreted terrane comprised mainly of Proterozoic to Triassic metaigneous and metasedimentary assemblages
to Early Mississippian, Permian, and lastly Late Triassic to Early Jurassic time (Mortensen, 1992).
the mid-Permian to the onset of magmatism in Late Triassic time, and likely represents a major continent-continent
Trench which has been partially filled by Tertiary and Quaternary sediments (Nelson and Colpron, 2007).
Broadly speaking, these deposits are young (Tertiary or Quaternary in age) and form within the top 1.5 km
from the Browns Hill Quarry basalt, an unmineralized Quaternary basalt flow from the Fairbanks Mining
2 references
Linkage to this mine was established with a simple name match from imperfect metadata identifying the geographic area of the mining project
P97 (Deleted Property)
4530692:ND7CW47J Property P97 not found, cannot determine the data type to use.
0 references
