Zobrazeno 1 - 10
of 17
pro vyhledávání: '"C. C. Rundle"'
Autor:
Stephen R. Noble, T. S. Brewer, C. C. Rundle, C. J. Evans, D. W. Holliday, Tim Pharaoh, Richard J. Merriman, G. S. Kimbell, J. M. Allsop
Publikováno v:
Proceedings of the Yorkshire Geological Society. 51:329-342
SUMMARY A granophyric microgranite has been proved in the sub-Carboniferous basement at Moorby, near Horncastle in south Lincolnshire. The microgranite is interpreted as a high level intrusion which has suffered strong alteration and deformation subs
Publikováno v:
Journal of the Geological Society. 153:33-38
U-Pb analyses of zircons from the Ennerdale granitic intrusion and Eskdale Granite (English Lake District) give ages of 452 ± 4 Ma and 450 ± 3 Ma respectively. These data confirm the sub-volcanic association of these intrusions, and show that previ
Publikováno v:
Journal of Geophysical Research: Solid Earth. 99:21705-21715
Mechanical analysis of lithospheric deformation associated with an intracontinental transform fault suggests that it should be associated with a pattern of vertical axis rotations governed by the length of the fault, its displacement, and the mechani
Publikováno v:
Journal of the Geological Society. 148:861-868
The Central Belt of the Southern Uplands Terrane, in both Scotland and Ireland, is a faulted and imbricated sequence of Caradoc to Llandovery shales and Llandovery turbidites with numerous interbedded K-bentonites. The bentonites are composed dominan
Publikováno v:
Proceedings of the Yorkshire Geological Society. 42:297-305
SUMMARY A Rb-Sr age of 394 ± 3 Ma has been determined from a 21–point isochron for the Shap Granite, which was probably emplaced in lower Devonian times. The determination provides a minimum age for the base of the Gedinnian Stage. K-Ar measuremen
Publikováno v:
The Journal of Geology. 94:505-522
Siluro-Devonian magmatism in the Southern Uplands (Scotland) and Northern Ireland includes a hitherto neglected regional SW-NE zone, c. 10 km wide and >300 km long, of calc-alkaline lamprophyre dykes. Lamprophyres were locally emplaced contemporaneou
Publikováno v:
Journal of the Geological Society. 138:31-46
Sills of olivine-microgabbro and olivine-dolerite 0.5–180 m thick intrude Lower Liassic (Hettangian–Sinemurian) sediments in the Fastnet Basin, a SW extension of the N Celtic Sea Basin, about Lat. 50°N, Long. 10°W. The evidence of 3 wells and 2
Autor:
P. M. Allen, N. J. Fortey, Anthony H. Cooper, B. C. Webb, C. C. Rundle, M. K. Lee, D. C. Cooper
Publikováno v:
Journal of the Geological Society. 145:523-540
The Crummock Water aureole, an ENE-trending elongate zone of bleached and recrystallized Skiddaw Group rocks, 24 km in length and up to 3 km wide, is a zone in which pervasive metasomatism has modified the composition of the dominantly siltstone and
Autor:
C. C. Rundle, N. J. Snelling
Publikováno v:
Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences. 286:567-583
Uranium and lead analyses of rock samples from the Witwatersrand, Ventersdorp, and Transvaal supergroups give mainly discordant ages. Samples from the Upper Witwatersrand of the Orange Free State give 207 Pb/ 206 Pb ages of ca. 3000 Ma. These data wh
Autor:
C. C. Rundle, M. T. Styles
Publikováno v:
Journal of the Geological Society. 141:15-19
An acid vein from a borehole in the Kennack Gneiss has given a whole-rock Rb-Sr isochron age of 369 ± 12 Ma. This is interpreted as a metamorphic age recording the time of emplacement of the Lizard Complex. This emplacement in late Devonian times wa