We have reappraised the age and composition of mid-Proterozoic Häme dyke swarm in southern Finland. The dominant trend dykes this is NW to WNW. Petrographic observations geochemical data indicate uniform, tholeiitic low- Mg parental magmas for all dykes. Nevertheless, variability incompatible trace element ratios, such as Zr/Y La/Nb, provides evidence changing mantle melting conditions variable...

Dykes are magma-filled fractures propagating through the brittle crust. Understanding physics of dyking process is essential to mitigate volcanic hazard associated with opening new eruptive fissures at surface. Often, physics-based models view either fracturing host rock or viscous flow magma as dominating energy sink during dyke propagation. Here, we provide a numerical model that captures cou...

Abstract Abundant silica-undersaturated potassic lavas are found in the centre of Turkish–Iranian plateau (NW Iran) as flows, pillows and dykes. They display abundant zoned clinopyroxene macrocrysts xenoliths igneous cumulates. We determined four types crystals (Type-I, -II, -III -IV) on basis their composition zoning patterns. Use situ compositional data, together with whole-rock major trace e...

After establishing user requirements (Lloyd, Dykes, Radburn, 2007) human centred techniques can be used to progressively prototype geovisualization applications. User evaluation has been limited in visualization (Ellis and Dix, 2006) and a handful of studies focus on geovisualization users at the design stages (e.g. Ahonen-Rainio and Kraak, 2005). This paper outlines work to mediate geovisualiz...

Submarine eruptions that lead to the formation of new volcanic islands are rare and far from being fully understood; only a few such eruptions have been witnessed since Surtsey Island emerged to the south of Iceland in the 1960s. Here we report on two new volcanic islands that were formed in the Zubair archipelago of the southern Red Sea in 2011-2013. Using high-resolution optical satellite ima...

During the past two decades, several groups of workers have investigated the serum protein levels in patients suffering from ulcerative colitis (Tumen, Monaghan, and Jobb, 1947; Spellberg, Mosiman, and Smith, 1950; Bendandi, 1956; Bicks, Kirsner, and Palmer, 1959; Brooke, Dykes, and Walker, 1961; Soergel and Ingelfinger, 1961), and as a result of these investigations it is now widely accepted t...