This chapter is dedicated to H. Jay Melosh who tragically passed away during this endeavor.
From his earliest publications on the concept of acoustic fluidization, to the publication of his …

Shatter cones are a fracture phenomenon that is exclusively associated with shock
metamorphism and has also been produced in the laboratory in several shock experiments …

Reidite, the high‐pressure zircon (ZrSiO4) polymorph, is a diagnostic indicator of impact
events. Natural records of reidite are, however, scarce, occurring mainly as micrometer …

Abstract The Late Triassic (Carnian to Rhaetian Stages: ca. 237–201 Ma) has a long history
of geological research, although controversy remains over the precise definition of key sub …

The Rochechourt impact structure in south‐central France, with maximum diameter of 40–50
km, has previously been dated to within 1% uncertainty of the Triassic–Jurassic boundary, at …

Age determination of impact structures via the zircon U-Pb system remains challenging and
often ambiguous due to highly variable effects of shock metamorphism on U-Pb …

The highly eroded 23 km diameter Rochechouart impact structure, France, has extensive
evidence for post-impact hydrothermal alteration and sulphide mineralisation. The sulphides …

The Rochechouart impact structure in the northwestern part of the French Massif Central
(FMC) has a great diversity of impactites, including monomict impact breccias, suevite, and …

The evolution of Earth's atmosphere over billions of years provides important constraints on
the geological history of our planet. However, major challenges in studying this have been …

The Lairg Gravity Low may represent a buried impact crater c. 40 km across that was the
source of the 1.2 Ga Stac Fada Member ejecta deposit but the gravity anomaly is too large to …