Zobrazeno 1 - 7
of 7
pro vyhledávání: '"R. M. Flowers"'
Publikováno v:
Geochronology, Vol 6, Pp 199-226 (2024)
The conventional zircon (U–Th) / He (ZHe) method typically uses microscopy measurements of the dated grain together with the assumption that the zircon can be appropriately modeled as a geometrically perfect tetragonal or ellipsoidal prism in the c
Externí odkaz:
https://doaj.org/article/0027cb87d09e4937b90c199984c012a3
Publikováno v:
Geochronology, Vol 5, Pp 197-228 (2023)
Apatite (U–Th) / He (AHe) dating generally assumes that grains can be accurately and precisely modeled as geometrically perfect hexagonal prisms or ellipsoids in order to compute the apatite volume (V), alpha-ejection corrections (FT), equivalent s
Externí odkaz:
https://doaj.org/article/218fa82ae20241d09e5e411edc9c4d9e
Publikováno v:
Geochronology, Vol 5, Pp 91-107 (2023)
Although rigorous uncertainty reporting on (U–Th) / He dates is key for interpreting the expected distributions of dates within individual samples and for comparing dates generated by different labs, the methods and formulae for calculating single-
Externí odkaz:
https://doaj.org/article/a9e6b7f9e3ac48e79abd8e9ef0448270
Publikováno v:
Earth Surface Dynamics, Vol 8, Pp 177-194 (2020)
Here we examine the landscape of New Zealand's Marlborough Fault System (MFS), where the Australian and Pacific plates obliquely collide, in order to study landscape evolution and the controls on fluvial patterns at a long-lived plate boundary. We pr
Externí odkaz:
https://doaj.org/article/fbfc52bfbaf04af99af881e5c5a00826
Publikováno v:
Geochemistry, Geophysics, Geosystems, Vol 22, Iss 6, Pp n/a-n/a (2021)
Abstract The Great Unconformity is a widely distributed surface separating Precambrian rocks from overlying Phanerozoic sedimentary sequences. The causes and implications of this feature, and whether it represents a singular global event, are much de
Externí odkaz:
https://doaj.org/article/2bef5de5e2724841be750596824f7ac7
Publikováno v:
Proceedings of the National Academy of Sciences of the United States of America. 119(38)
Autor:
Desmond E. Moser, I. Barker, R. M. Flowers, J.R. Hart, C. L. Cupelli, John R. Bowman, J. L. Wooden
Publikováno v:
Canadian Journal of Earth Sciences. 48:117-139
Integrated electron nanobeam (EBSD, CL, EDS) and isotopic measurements (U–Pb, (U–Th)/He) of zircon from the collar and centre of the 80 km wide central uplift of the 2020 ± 3 Ma Vredefort impact structure reveal new shock features in a microstru