...Anthi LIATI; Nikolaus FROITZHEIM Abstract Recent tectonic studies suggest that the Balma unit, a nappe sliver of eclogite and serpentinite directly overlying the Monte Rosa nappe in the Western Alps, represents a remnant of the Cretaceous Valais ocean. In order to test this hypothesis, U-Pb SHRIMP...

..., and Finero that are interpreted as fragments of upper mantle, the cyclic units consisting of a layered series of peridotites, pyroxenites, and gabbros, the main gabbro, the ultramafic sill of La Balma-Monte Capio, and a series of ultramafic pipes.Small-sized deposits of Ni-Cu sulfides with associated...

... Italy. These results significantly extend the known footprint of one of the largest examples of a large igneous province (LIP) on the planet. The La Balma–Monte Capio (LBMC) intrusion ranges from dunitic at the base to plagioclase-bearing pyroxenitic at the top. Zircons were extracted from two samples...

... contact with Raeberry unit (west side of Howwell Bay). 832 A . E . S . K E M P N \ 0 100 200m BALMAE A R E A Trace of bedding - Younging direction Trace of minor fault zone Ross Unit Gipsy Po nt Unit - - - c - c c c - - Fig. 5. Map and cross-section showing distribution of sheared zones in the Ross...

...; the "steppe-type" is less intense, affecting scarcely more than the surface, and is contemporaneous with Pleistocene loess; a third and still weaker degree is the subaerial patina found on stone artifacts from Balma. GeoRef, Copyright 2004, American Geological Institute. Reference includes data from...

... Ordovician) age form the Leadhills Supergroup ( Floyd 1996 ), for which the Orlock Bridge Fault forms the southern margin. This zone is known colloquially as the Northern Belt, following Peach & Horne (1899) . Southwards from the Orlock Bridge Fault, and as far as the Balmae Burn Fault, a series...

...–Armagh region, showing location of Figures 3 , 4 and 5 . The 3 kHz apparent conductivity data (in units of mS m) are shown as a colour image with shaded relief illuminated from the NW. Internally, the terrane comprises at least 20 fault-defined tracts elongated NE–SW parallel to strike...

... between the outcrop of biostratigraphically defined rock units and distinctive patterns of element distribution in stream sediments derived from those units, with the stream sediment patterns indicating cryptic compositional variations that are not otherwise apparent. Analysis of the stream sediment...

... inclined and become younger towards the NW; yet the minimum age of the graptolites in each individual tract generally becomes incrementally younger towards the SE ( Floyd 2001 and references therein). The Southern Upland Fault forms the NW margin of the terrane, which is the southernmost tectonic unit...

... and Planetary Science Letters , 393 , 266 – 274 . Liati A. Froitzheim N. 2006 . Assessing the Valais Ocean, Western Alps: U–Pb SHRIMP zircon geochronology of eclogite in the Balma unit, on top of the Monte Rosa nappe . European Journal of Mineralogy , 18 , 299 – 308 . Liati...

... geochronology of eclogites from the Balma Unit (Pennine Alps): implications for Alpine paleotectonic reconstructions . Swiss Journal of Geosciences 101 (S1) , 173 – 89 . Hiess , J. , Condon , D. J. , McLean , N. & Noble , S. R. 2012 . 238 U/ 235 U systematics in terrestrial...

... it north of the Coldingham Moor inlier of Silurian rocks. These strata have previously been described as Gala Group, but are more appropriately included within the newly-defined Ettrick Group. Fig. 1. Outline geological map showing the distribution of the principal rock units in the NE part...

... in Switzerland caused by the Wurm Alpine deglaciation . – Eclogae Geol. Helv. , 87 , 545 – 557 . Herwartz D. Münker C. Scherer E. Nagel T. Pleuger J. Froitzheim N. ( 2008 ). – Lu-Hf garnet geochronology of eclogites from the Balma unit (Pennine Alps): implications for Alpine...