Granular neoblastic zircon (ZrSiO 4) with systematically oriented granules has been
proposed as evidence for extreme shock pressures (> 30 GPa) and subsequent high …

Impact cratering is an important geological process on Earth. This review summarizes the
state of knowledge of the Precambrian (Hadean, Archean, and Proterozoic) impact record …

Abstract The Vredefort impact structure, South Africa, is a 2.02 Ga deeply eroded meteorite
scar that provides an opportunity to study large impact craters at their lower stratigraphic …

Granophyre dykes in the central part of the Vredefort impact structure are believed to be the
remnants of the impact melt sheet, which intruded downwards along the fractures in the …

Purpose. Exploration and predicting the prospective areas in the Zhezkazgan ore region to
set up detailed prospecting and evaluation works using new integrated technologies of …

Archaean granitoid gneisses and younger metadolerite and dolerite intrusions in a drill core
from the late-Jurassic Morokweng impact structure, host mm-to m-wide aphanitic dykes that …

The Vredefort granophyre dikes have long been recognized as being derived from the now-
eroded Vredefort melt sheet. One dike, in particular, the Daskop granophyre dike, is notable …

Vredefort Granophyre dykes are generally considered to be a part of impact melt, which
intruded downward from the melt sheet of the Vredefort impact structure (South Africa). This …

Mechanical microtwins in zircon is a characteristic shock feature and a potential tool for
estimating shock pressure and/or shear stress. However, so far, zircon with microtwins has …

The Vredefort impact structure in South Africa is deeply eroded to its lowermost levels.
However, granophyre (impact melt) dykes in such structures preserve clasts of supracrustal …