Rolf L. Romer

TL;DR: In this paper, the authors explain the Variscan orogen in a two-plate scenario, reasoning that the complexity of the orogen (multitude of high-grade metamorphic belts, compositional diversity of coeval magmatism, and arrangement of foreland basins) is the result of the distribution of crustal domains of contrasting rheological properties.

TL;DR: In this paper, SHRIMP U/Pb geochronology on detrital and inherited zircon grains from pre-Variscan basement rocks of the northern part of the Bohemian Massif (Saxo-Thuringia, Germany) demonstrates a distinct West African provenance for sediments and magmatic rocks in this part of peri-Gondwana.

TL;DR: Aillikite is a type of ultramafic lamprophyre that consists of olivine and phlogopite phenocrysts in a carbonateor clinopyroxene-dominated groundmass.

TL;DR: In the Mediterranean area, lamproites are derived from melts with three components involved in their origin, characterized by contrasting geochemical features which appear in 206Pb/204Pb, 87Sr/86Sr, and 143Nd/144Nd space as discussed by the authors.

TL;DR: In this article, the once-contiguous North Atlantic craton (NAC) is crosscut by the Labrador Sea that opened during the Early Cenozoic after extensive Mesozoic continental rifting and removal of cratonic mantle.