The isotopic origin of Lord Howe Island reveals secondary mantle plume twinning in the Tasman Sea
First radiogenic isotope data from Lord Howe Island lavas reveal a secondary mantle plume twin in the Tasman Sea with a distinct deep mantle source.
Oliver Nebel
Professor of Geochemistry
Oliver Nebel is a high-temperature geochemist who uses rock and mineral chemistry, and stable and radiogenic isotope compositions, to study mantle composition, ocean floor volcanic activity, and crust-mantle evolution. He directs the Monash Isotopia Laboratory.
Iron isotope systematics during igneous differentiation in lavas from Kīlauea and Mauna Loa, Hawai'i
Iron isotope and hafnium data from Kīlauea and Mauna Loa lavas reveal how igneous differentiation and mantle source heterogeneity shape Hawaiian volcanism.
Unravelling the origins of volcanism along Eastern Australia and the Tasman Sea
Mantle plumes are buoyant upwellings rising from the Earth’s core-mantle boundary to its surface, generating hotspot chains that track the direction of plate motion. Eastern …
Parallel volcanic chains generated by plume-slab interaction (invited)
Deep mantle plumes are buoyant upwellings rising from the Earth’s core-mantle boundary to its surface, and describing most hotspot chains. Mechanisms to explain dual chains of …
Slab-induced plume branching connects parallel hotspot chains
We propose that slab-induced plume branching can explain the formation of parallel hotspot chains observed in the oceanic and continental record. Using plate tectonic …
Intraplate volcanism triggered by bursts in slab flux
Long-lived, widespread intraplate volcanism without age progression is one of the most controversial features of plate tectonics. The eastern margin of Australia and Zealandia has …
Intraplate volcanism triggered by bursts in slab flux
Modelling 100 million years of subducted slab volume reveals that bursts in slab flux trigger intraplate volcanism in eastern Australia.
An Early Cretaceous subduction-modified mantle underneath the ultraslow spreading Gakkel Ridge, Arctic Ocean
Seafloor lavas from the ultraslow Gakkel Ridge preserve geochemical signatures of an Early Cretaceous subduction zone, revealing ancient mantle heterogeneity beneath the Arctic …
Intraplate volcanism triggered by bursts in slab flux (invited speaker)
Investigating the link between changes in subducting slab flux and the triggering of intraplate volcanism, with a focus on the volcanic record of eastern Australia.