29 research outputs found
Processes in magma chambers beneath spreading axes: evidence from magmatic associations in the Oman Ophiolite
O18 Enriched Ophiolitic Metabasic Rocks from E. Ligura (Italy), Pindos (Greece), and Troodos (Cyprus)
Volcanic rocks beneath the Semail Ophiolite nappe in the northern Oman mountains and their significance in the Mesozoic evolution of Tethys
The structure of the oceanic upper mantle and lower crust as deduced from the northern section of the Oman ophiolite
Evidence-based EI coaching: a case study in the mining industry
This case study summarises how an ongoing coaching programme was implemented in a UK mining organisation to help develop leadership performance and enhance leadership behaviours developing a more supportive and people focused approach. We outline how the use of Emotional Intelligence (EI) assessments complements a Cognitive Behavioural Coaching (CBC) approach to contribute to evidence-based coaching. We acknowledge the unusual organisational context and culture which resulted in some resistance to the discussed approach, but note how the use of ‘data’ in the form of individual psychological profiles and a rigorous goal-based coaching approach went some way to alleviating initial reluctance
Architecture of the Oman-UAE ophiolite : evidence for a multi-phase magmatic history
The Oman–United Arab Emirates ophiolite is the
world’s largest ophiolite. It is divided into 12 separate faultbounded
blocks, of which the northern three lie wholly or
partly in the United Arab Emirates. Extensive mapping has
shown that the United Arab Emirates blocks contain mantle
and crustal sections which correspond to the classic
‘Penrose conference’ ophiolite definition but which are
cut by a voluminous later magmatic sequence including
ultramafic, mafic and felsic components. Samples from the
later magmatic sequence are dated at 96.4±0.3, 95.74±0.3
and 95.2±0.3 Ma; the early crustal section, which has not
been dated directly, is thus constrained to be older than c.
96.4 Ma. Petrological evidence shows that the early crustal
section formed at a spreading ridge, but the later magmatic
sequence was formed from hydrous magmas that produced
different mineral crystallisation sequences to normal midocean
ridge basalt (MORB). Mineral and whole-rock
geochemical analyses show that the early crustal rocks are
chemically similar to MORB, but the later magmatic
sequence has chemical features typically found in suprasubduction
zone (SSZ) settings. The ophiolite in the United
Arab Emirates thus preserves clear evidence for two stages
of magmatism, an early episode formed at a spreading
centre and a later episode associated with the onset of
subduction. Similar two-stage magmatism has been recognised
in the Oman sector, but the United Arab Emirates
contains the most voluminous SSZ magmatism yet described
from this ophiolite