Zobrazeno 1 - 10
of 132
pro vyhledávání: '"J. Gregory Shellnutt"'
Publikováno v:
Geophysical Research Letters, Vol 51, Iss 2, Pp n/a-n/a (2024)
Abstract The formation of large igneous provinces (LIPs) has been widely believed to be linked to mantle plume activity. However, how the plume modifies the overlying lithosphere, particularly its compositional structure, remains uncertain. Here, we
Externí odkaz:
https://doaj.org/article/d140aa986f7940e48e5117453a441605
Publikováno v:
Frontiers in Earth Science, Vol 11 (2023)
Externí odkaz:
https://doaj.org/article/4b092f69fa1342819e658cfeff5c54ef
Autor:
Yuan-Hsi Lee, Kristen L. Cook, Xi-Bin Tan, Mei-Fei Chu, Han-Yi Chiu, Qui-Li Li, J. Gregory Shellnutt, Xi-Wei Xu
Publikováno v:
Frontiers in Earth Science, Vol 11 (2023)
The eastern margin of the Tibetan Plateau has given rise to much debate about mechanisms of plateau uplift and evolution and, in particular, the role of the lower crust in crustal thickening. Knowledge of the middle to lower crust conditions is criti
Externí odkaz:
https://doaj.org/article/f786a662ae414785a5505a1c81d2680b
Publikováno v:
Scientific Reports, Vol 12, Iss 1, Pp 1-7 (2022)
Abstract The crust of Venus is composed of the low lying volcanic planitiae and the elevated, deformed tesserae. It is thought that the tesserae may be composed of silicic igneous rocks and that it may resemble proto-continental crust. The initial de
Externí odkaz:
https://doaj.org/article/cc9590798d014180a62dc88671cb6071
Publikováno v:
Frontiers in Earth Science, Vol 11 (2023)
Mesozoic granitic plutons are found throughout the Indochina terrane of eastern Cambodia and southern Vietnam. The granitic rocks range in age from Early Triassic (240 Ma) to Late Cretaceous (80 Ma) and record distinct tectonomagmatic periods associa
Externí odkaz:
https://doaj.org/article/eab77badd2cb45118a7b9f4f597b4190
Publikováno v:
Terrestrial, Atmospheric and Oceanic Sciences, Vol 32, Iss 3, Pp 319-338 (2021)
The Baima igneous complex (BIC) consists of a cumulate layered gabbroic unit, an Fe-Ti oxide ore zone, and an isotropic quartz syenite. The formation of the BIC is attributed to a variety of petrological processes including: silicate immiscibility, f
Externí odkaz:
https://doaj.org/article/7927c1344f5f4f2694678e315de9c1f8
Autor:
Jaroslav Dostal, J. Gregory Shellnutt
Publikováno v:
Lithosphere, Vol 2022, Iss 1 (2022)
AbstractThe Challis-Kamloops belt of south-central British Columbia is a regionally extensive (>65,000 km2) magmatic province that erupted within the North American Cordillera during the Eocene (55-45 Ma). The inland volcanic belt runs parallel to th
Externí odkaz:
https://doaj.org/article/b462394010354916b0e55ccfd0494802
Publikováno v:
Scientific Reports, Vol 11, Iss 1, Pp 1-14 (2021)
Abstract The Triassic volcanic rocks of Wrangellia erupted at an equatorial to tropical latitude that was within 3000 km of western North America. The mafic and ultramafic volcanic rocks are compositionally and isotopically similar to those of oceani
Externí odkaz:
https://doaj.org/article/db4d5fe6114c4694a7bf71f4af3fc711
Publikováno v:
Frontiers in Earth Science, Vol 8 (2021)
Externí odkaz:
https://doaj.org/article/59beec6c09a64c928642a45ee962b262
Autor:
J. Gregory Shellnutt, Jaroslav Dostal
Publikováno v:
Minerals, Vol 12, Iss 5, p 575 (2022)
The Meguma terrane is a unique unit of the Northern Appalachians as it is only identified in Nova Scotia. It was thrust over the Avalon terrane during the Early Devonian Acadian Orogeny. The Avalon and Meguma terranes are exotic to North America and
Externí odkaz:
https://doaj.org/article/b8111129dd2a4a72994ea0758ea7adfb