Results 71 to 80 of about 1,993 (170)
Apatite fission‐track and (U‐Th)/He data indicate rapid exhumation of northern Victoria Land at 40–30 Ma, correlating with opening of Adare Trough at 43–28 Ma. Exhumation was greatest close to the Ross Sea, consistent with other regions of the Transantarctic Mountains.
Rupert Sutherland +2 more
wiley +1 more source
The diversity of organisms inhabiting deep-sea ecosystems, such as seamounts, has hitherto remained under-studied. In this study, we report on the faunal diversity in the water column adjacent to the summit and periphery of two seamounts (SMS2 and SMS3 ...
Devika Raj Kaliyath +4 more
doaj +1 more source
Seamounts represent crust-mantle activities and are areas of petrological deviations, biodiversity, seismicity and hydrothermal events. An estimated ~50 million tons/year of basalts are required to produce seamounts suggesting intense oceanic volcanism.
Iyer, S. D. +3 more
openaire +1 more source
This article analyses future projections of ocean properties for a region of the south‐west Pacific Ocean encompassing the New Zealand Exclusive Economic Zone under different climate change emission scenarios. Projections are updated and expanded from previous assessments using a “best” ensemble comprising both CMIP5 and CMIP6 earth system models.
Graham J. Rickard +2 more
wiley +1 more source
Intraplate Seamounts as a Window into Deep Earth Processes [PDF]
Seamounts are windows into the deep Earth that are helping to elucidate various deep Earth processes. For example, thermal and mechanical properties of oceanic lithosphere can be deter-mined from the flexing of oceanic crust caused by the growth of ...
Anthony A.P. Koppers, Anthony B. Watts
doaj
Les montagnes du Schakalsberg du Sperrgebiet en Namibie sont considerees comme partie integrante de la Ceinture Neo proterozoique de Gariep (745-550 Ma), qui est connue pour le gisement de metaux de base de Rosh Pinah (30 millions de tonnes, Zn-Pb-Cu-Ag).
openaire +1 more source
Abstract Two sediment cores were collected from a submarine sediment wave field on the flank of Macauley volcano. Combined with seismic reflection surveys and numerical modeling, we present an integrated model of the formation of large‐scale, eruption‐fed, submarine sediment waves. The sediment waves are large (>100 m high, 1.5 km wide, tens of km long)
Shannon E. Frey +3 more
wiley +1 more source
Surveys of seamounts in the Southern Indian Ocean were carried out during the 37th and 38th Japanese Antarctic Research Expedition (JARE-37 and JARE-38). Previous uncharted seamounts were identified on board the icebreaker SHIRASE.
Yoshifumi Nogi +2 more
doaj +1 more source
Abstract Grande Comore, the westernmost island within the Madagascar Comoros Volcanic (MCV) chain, hosts two juxtaposed basaltic volcanoes, Karthala and La Grille, with contrasting lava geochemical signatures and eruption frequencies. Their formation and dynamics have been explained either by a mantle plume or, more recently, as part of a ...
François J. P. Lötter +6 more
wiley +1 more source
Cenozoic Subduction Polarity Reversal Within the Celebes Sea Inferred From Teleseismic Tomography
Abstract Sulawesi and Borneo are tectonically complex islands with multistage subduction histories stretching back through the Cenozoic. Seismic studies have played an important role in helping to unravel this history, with spatial distributions of earthquakes tracking actively subducting slabs. In contrast, old or relict aseismic slabs are illuminated
Y. Li +6 more
wiley +1 more source

