Zobrazeno 1 - 10
of 36
pro vyhledávání: '"R L Gibson"'
Autor:
P. Ogilvie, R. L. Gibson
Publikováno v:
Solid Earth, Vol 8, Iss 1, Pp 93-135 (2017)
Coronas, including symplectites, provide vital clues to the presence of arrested reaction and preservation of partial equilibrium in metamorphic and igneous rocks. Compositional zonation across such coronas is common, indicating the persistence of ch
Externí odkaz:
https://doaj.org/article/ed0caa7e1a574318b8983d19aad8b6a4
Publikováno v:
X-Ray Spectrometry. 33:189-203
Several concretionary pyrite grains displaying multiple, massive sulphide or silicate inclusion-rich, annuli from two gold-bearing reef horizons (Ventersdorp Contact Reef, Kimberley Reefs) in different parts of the Witwatersrand Basin were analysed b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bfdcaba9cf4216793cc5593f0724252f
https://doi.org/10.1002/xrs.683
https://doi.org/10.1002/xrs.683
Autor:
R. L. Gibson, M. Q. W. Jones
Publikováno v:
Basin Research. 14:169-181
The c. 2.97–2.71 Ga Witwatersrand Basin located in the Kaapvaal craton of South Africa represents a remnant of a large Late Archaean sedimentary basin that hosts the world's premier gold deposit within a series of conglomerate horizons. Evidence of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ccab7835c827f3c95836fab53257e630
https://doi.org/10.1046/j.1365-2117.2002.00168.x
https://doi.org/10.1046/j.1365-2117.2002.00168.x
Publikováno v:
Calcified Tissue International. 69:164-170
Parathyroid hormone (PTH) is thought to increase trabecular bone mass in postmenopausal women by stimulating osteoblast function. A similar action may contribute to estrogen's protective effect on the skeleton, which we have explored in female mice,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::73a7a497faf07d2de5fdc1071240ae3e
https://doi.org/10.1007/s002230020026
https://doi.org/10.1007/s002230020026
Publikováno v:
University of Bristol-PURE
It is well recognized that high-dose estrogen induces a marked osteogenic response in long bones of female mice. In light of evidence which suggests that nitric oxide synthase (NOS) plays a role in regulation of osteoblast activity, we analyzed wheth
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::da3ce02b6e114ef5630be6ea595aed04
https://doi.org/10.1016/s8756-3282(01)00471-9
https://doi.org/10.1016/s8756-3282(01)00471-9
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 158:588-592
The nuclear microprobe has been used to examine gold-pyrite associations in the gold-bearing Kimberley Reefs of the Witwatersrand basin through the use of particle induced X-ray emission (PIXE) dynamic mapping and spot analysis. Two morphological typ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::147a96e78ca9746331ecb370124f70d3
https://doi.org/10.1016/s0168-583x(99)00364-x
https://doi.org/10.1016/s0168-583x(99)00364-x
Autor:
W. U. Reimold, R. L. Gibson
Publikováno v:
Mineralogy and Petrology. 66:5-23
The Vredefort Dome represents an area of significant (∼ 10 km) structural uplift within the central parts of the economically important Witwatersrand Basin. Its rocks experienced higher grades of metamorphism than the equivalent stratigraphic horiz
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b4f82dafbf7ad3cf016f06ad73021080
https://doi.org/10.1007/bf01161720
https://doi.org/10.1007/bf01161720
Autor:
R. L. Gibson, T. Wallmach
Publikováno v:
Geological Journal. 30:319-331
Pelitic metasediments of the Witwatersrand Supergroup in the Vredefort Dome contain textural evidence for a two-stage metamorphic history. The pressure-temperature (P-T) path derived for the rocks indicates that they were subjected to a high geotherm
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::449b60f7132e818df15548d3c9605b1a
https://doi.org/10.1002/gj.3350300311
https://doi.org/10.1002/gj.3350300311
Autor:
Mike J. Bickle, R. L. Gibson
Publikováno v:
Journal of the Geological Society. 151:987-997
Quantitative thermobarometry of garnet + biotite + sillimanite f cordierite pelitic assemblages from the Canigou massif, and constraints based on consideration of high-grade metapelitic reaction equilibria, indicate that peak temperatures during Herc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fb840b311faf030f93033df9163417b8
https://doi.org/10.1144/gsjgs.151.6.0987
https://doi.org/10.1144/gsjgs.151.6.0987
Autor:
W. U. Reimold, R. L. Gibson
Publikováno v:
Impacts and the Early Earth ISBN: 3540670920
The main evidence in the Vredefort Dome and surrounding parts of the Witwatersrand Basin is presented, which indicates that this terrain represents the deeply exhumed root zone of a large, 2023 ± 4 Ma, complex impact structure. Shock metamorphic fea
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::08668a6fa271f110c831c647d510259b
https://doi.org/10.1007/bfb0027763
https://doi.org/10.1007/bfb0027763
