A robust geochronology based on U–Pb zircon ages in Australia (n= 158) and Europe (n=
376) provides a rigorous test of (1) the model of a climatic–tectonic cycle of a single …

Abstract The Kiaman Reversed Superchron (∼ 260–318 Ma) is the longest known period of
single geomagnetic polarity in Earth history (∼ 55 million years). It is associated with …

The Devonian Orcadian Basin in Scotland hosts extensional fault systems assumed to be
related to the initial formation of the basin, with only limited post-Devonian inversion and …

Precambrian granites of the Sharm El-Sheikh area in south Sinai, Egypt belong to collisional
and post-collisional Magmatism (610–580 Ma). The granites are widely distributed in the …

The distribution of oil residues in fractured Upper Devonian reservoir sandstones of
Caithness help us to understand relationships between oil charge and episodes of …

All of the components of an exhumed Devonian petroleum system occur in Orkney. These
include a good quality mature source rock to bitumen-bearing sandstone reservoirs, with …

Orbicular structures are classically defined as concentrically zoned, spheroidal to sub-
spheroidal bodies that grow in igneous systems and commonly display distinct mineral …

Intrusive and extrusive mafic igneous rocks in the Embla oil field, central North Sea, testify to
repeated post-Caledonian magmatism on the northern flank of the Mid North Sea High. The …

The landscapes and landforms of Orkneyand Caithness have been profoundly influenced by
the varied lithology and structures of the Devonian sedimentary cover. During the Neogene …

Earlier paleomagnetic studies of the Orkney Islands, Scotland, have encountered difficulties
with identifying the oldest components seen in the Devonian rocks. Poor quality of …