...C. A. COOK; R. E. HOLDSWORTH; M. T. STYLES Abstract Upper mantle peridotites and associated oceanic rocks from the Lizard Complex, southwest England, preserve evidence for a multistage geological history. Steeply dipping pre-emplacement fabrics record high-temperature (900–1100 °C) shearing...

...C. A. COOK; R. E. HOLDSWORTH; M. T. STYLES; J. A. PEARCE Abstract The Lizard Complex of SW England includes thrusted units of peridotites that were initially exhumed from upper mantle ( c. 52 km) to lower crustal ( c. 24 km) depths during a period of Early Devonian rifting and break-up. This basin...

...H. A. SANDEMAN; A. H. CLARK; M. T. STYLES; D. J. SCOTT; J. G. MALPAS; E. FARRAR Abstract The Man of War Gneiss is a variably deformed meta-igneous body that ranges in composition from gabbro to tonalite and comprises part of the basal structural slice of the Lizard ophiolite complex, SW England. U...

...Wes Gibbons; Lucy Thompson Abstract Ophiolitic rocks in the Lizard complex, southwestern England, preserve fine examples of mylonitic schists within low-angle amphibolite-facies shear zones. Two prominent shear zones, with type localities at Carrick Luz and Porthoustock, both have a footwall...

...J. Malpas; G. S. Langdon Abstract The Kennack Gneisses are a series of migmatites and microgranites found at the base of the peridotite of the Lizard Ophiolite Complex. The gneisses were derived by metamorphism and anatexis of interbedded sediments and basalts of a lower ophiolite slice during...

..., gabbro and a dyke complex in the east to lherzolite peridotite and cumulate complex in the west. This might indicate structural separation into eastern and western units, or primary igneous variation. At Lizard point, the minimum thickness of the lower Landewednack hornblende schists, on the basis...

... Abstract Dr J. R. V earncombe writes: Hailwood et al. 1984 present a number of palaeomagnetic pole determinations for the Lizard Complex (SW England). Although the data presented are coincident with the Permian geomagnetic field direction for SW England, they reject the concept of the 370Ma Lizard...

... Abstract D r A. T. V. R othstein writes: In the paper concerning the isotopic evolution of the Lizard complex G. R. Davies (1984) writes, concerning the upper mantle peridotites occurring in this complex ‘…[the] spinel lherzolites are porphyroclastic…PT estimates for the cores of adjacent...

...M. T. Styles; C. C. Rundle Abstract 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 was part...

...E. A. Hailwood; P. J. R. Gash; P. C. Andresen; J. P. N. Badham Abstract The Lizard Complex of SW England has recently been interpreted as representing a fragment of oceanic lithosphere that was thrust on to the continental crust of S Cornwall in the Devonian as a result of tectonic processes...

...R. P. Barnes; J. R. Andrews Abstract Regional prograde pumpellyite actinolite facies metamorphism (Ml) has affected the Gramscatho Group sediments and volcanics structurally underlying the Lizard Complex. Metamorphism took place synchronously with the main penetrative deformation (Dl...

... volcanic rocks from S. Cornwall. Thesis, MSc, Univ. Keele. (unpubl.) Badham J. P. N. Cornubian geotectonics—lateral thinking Proc Ussher Soc 1976 3 448 54 Badham J. P. N. A new tale for the Lizard—the last wag Abstract, Tectonic Studies Group meeting on ‘The Lizard Complex...

...K. Smith; R. C. Leake Abstract The results of a geochemical soil survey have been used to refine the geological mapping and interpretation of the inland, poorly exposed part of the Lizard Complex. Using cluster analysis, six major groups were recognized within a data set comprising 619 samples...

...P. R. Rattey; D. J. Sanderson Abstract Six phases of deformation can be recognized in the Devonian metasediments to the N of the Lizard Complex. The first two phases (D 1 & D 2 ) show a variety of orientations and styles, but with a general N or NW vergence. These phases, while respresenting...

...G. R. Davies Abstract An Sm-Nd mineral isochron from an olivine gabbro yields an age of 375 ± 34 Ma (MSWD = 0.006) which represents the formation age of the Lizard Igneous Complex. Associated dolerite dyke suites have ɛ Nd375 values between +8.9 and +11.7 and record derivation from a recently trace...

...J. P. N. Badham; G. A. Kirby Cornwall England crust England Europe evolution genesis Great Britain igneous rocks Lizard Complex oceanic crust ophiolite plate tectonics plutonic rocks processes sea-floor spreading spreading centers tectonophysics ultramafics United Kingdom...

...K. A. JONES Abstract The Basal Unit of the Lizard Ophiolite Complex preserves evidence of a protracted deformation and accretion history. The earliest recognizable events record the construction of ocean crust and the generation of the Lizard Ophiolite Complex in a slow-spreading ridge-axis...