Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Kathleen G. Thorne"'
Autor:
Fazilat Yousefi, David R. Lentz, Christopher R. M. McFarlane, James A. Walker, Kathleen G. Thorne
Publikováno v:
Frontiers in Earth Science, Vol 12 (2024)
Zircon is a common, widely distributed accessory mineral in most igneous rocks and its refractory nature records magmatic evolution in terms of oxygen and U-Th-Pb isotopes, and trace-element contents all of which reflect the intrinsic physio-chemical
Externí odkaz:
https://doaj.org/article/8ec69630b9e14d07acc0fce9cb15a97d
Publikováno v:
Geosciences, Vol 14, Iss 9, p 241 (2024)
High-silica adakites exhibit specific compositions, as follows: SiO2 ≥ 56 wt.%, Al2O3 ≥ 15 wt.%, Y ≤ 18 ppm, Yb ≤ 1.9 ppm, K2O/Na2O ≥ 1, MgO < 3 wt.%, high Sr/Y (≥10), and La/Yb (>10). Devonian I-type adakitic granitoids in the northern A
Externí odkaz:
https://doaj.org/article/df1b3d5848444d209a1a1424678bba58
Autor:
Fazilat Yousefi, David R. Lentz, Kathleen G. Thorne, Christopher R. M. McFarlane, Brian Cousens
Publikováno v:
Minerals; Volume 13; Issue 5; Pages: 594
The NE-trending multiphase Late Devonian Eagle Lake granite (ELG) in southwestern New Brunswick is mineralized, consisting of hypabyssal porphyritic stocks and dikes that intruded Silurian metabasic volcanic rocks; however, its various phases, ages,
Publikováno v:
Canadian Journal of Earth Sciences. 57:814-839
U–Pb geochronology was applied to a combination of magmatic and hydrothermal minerals to help constrain the timing of emplacement of three units in the Mount Douglas Granite (MDG) and reveal their association with a complex mineralized hydrothermal
Publikováno v:
Minerals, Vol 10, Iss 614, p 614 (2020)
Minerals
Volume 10
Issue 7
Minerals
Volume 10
Issue 7
The petrogenesis of the Pridoli to Early Lochkovian granites in the Miramichi Highlands of New Brunswick, Canada, is controversial. This study focuses on the Pridoli Nashwaak Granite (biotite granite and two-mica granite). In situ trace elements and
Publikováno v:
Minerals
Volume 10
Issue 6
Minerals, Vol 10, Iss 566, p 566 (2020)
Volume 10
Issue 6
Minerals, Vol 10, Iss 566, p 566 (2020)
The Lake George antimony mine was at one time North America&rsquo
s largest producer of antimony. Despite being widely known for the antimony mineralization, the deposit also hosts a range of styles of mineralization such as multiple generations
s largest producer of antimony. Despite being widely known for the antimony mineralization, the deposit also hosts a range of styles of mineralization such as multiple generations
Publikováno v:
Lithos. :105393
Late Silurian-Early Devonian granites are widespread in the Miramichi Highlands of New Brunswick, but their petrogenesis is controversial and hinders an understanding of the geological evolution of the Canadian Appalachians. Here we present a detaile
Publikováno v:
Lithos. 104:355-377
Two groups of granitoids associated with gold mineralization in the Appalachian orogen of southwestern New Brunswick are recognized: a Late Silurian to Early Devonian (423–396 Ma) granodioritic to monzogranitic series (GMS), and a Late Devonian (37
Publikováno v:
Exploration and Mining Geology. 17:51-66
The Main zone of the Clarence Stream gold deposit is hosted by a shear zone adjacent to the Saint George batholith in southwestern New Brunswick. The mineralization history relates to progressive deformation in the shear zone and the intrusion of the
Publikováno v:
Exploration and Mining Geology. 17:v-vii
The presence of numerous gold occurrences peripheral to the Early Devonian Saint George batholith in southwestern New Brunswick (Fig. 1⇓) has been known for several decades, and in many cases has been documented in historical reports. Although it w