Adjacent segments of the Pacific-Antarctic ridge display significantly different morphologies and depth-age relationships over seafloor younger than 36 Ma. The spreading corridor southwest of Fracture Zone XII is characterized by a rift valley and an usually small subsidence onstant of 226 13 m/m.y. •/2, while the two spreading corridors immediately northeast of Fracture Zone XII have an axial ...

Geological observations that constrain the history of mantle convection are sparse despite its importance in determining vertical and horizontal plate motions, plate rheology, and magmatism. We use a suite of geological and geophysical observations from the northern North Sea to constrain evolution of the incipient Paleocene-Eocene Icelandic plume. Well data and a three-dimensional seismic surv...

Among the functionalities of magnetic Heusler alloys, magnetostriction is attracting considerable attention. The alloy Ni2MnGa has a premartensite phase, which is a precursor state to the martensitic transition. Some researchers have observed magnetostriction in this alloy in the premartensite phase. We performed magnetostriction studies on the premartensite phase of related Cr-substituted Ni2M...

The chiral anomaly (CA) is one the most remarkable topological properties in Weyl semimetals (WSMs). Here, authors investigate second-order nonlinear planar Nernst and thermal Hall effects WSMs, manifested by CA with coplanar gradient magnetic field. With intrinsic chemical potential, these can exist WSMs pairs of oppositely tilted or nontilted cones. Interestingly, their transport coefficients...

Nearly all chemical processes fractionate 17O and 18O in a mass-dependent way relative to 16O, a major exception being the formation of ozone from diatomic oxygen in the presence of UV radiation or electrical discharge. Investigation of oxygen three-isotope behavior during thermal decomposition of naturally occurring carbonates of calcium and magnesium in vacuo has revealed that, surprisingly, ...

The Nullarbor is one of the largest contiguous karst plains in world. Despite absence surface relict features and arid climate, subterranean flooded cave systems are among waters usually brackish their temperatures vary over a large range (18.6–23.7 °C) suggesting potential input warm groundwater to some caves. studied Weebubbie Cave total length ∼500 m penetrates ∼140 below ground ∼40 sea leve...