There are 174 confirmed impact structures known on Earth (eg, http://www. unb. ca/passc/
ImpactDatabase/; late 2008) but a far smaller number of impact structures has yielded a well …

In this review we focus on the volcanism, that occurred in Transbaikalia, Siberia after the
closure of the Mongolia-Okhotsk Ocean. The closure happened in the Early Jurassic. After …

The 1980s began with the publication of a signal pioneering work in this general field: TJM
Schopf's Paleoceanography (Harvard University Press). What followed might be called the …

40Ar/39Ar dating of drill core samples of a glassy melt rock recovered from beneath a
massive impact breccia contained within the 180-kilometer subsurface Chicxulub crater in …

An impact-mass extinction hypothesis for the Cretaceous–Tertiary (K/T) boundary transition
has been confirmed with multiple lines of evidence, beginning with the discovery of impact …

This book provides a general introduction to impact stratigraphy, with emphasis on the
recognition of distal impact ejecta in the field, by focusing on the impactoclastic layers of the …

At present the two major hypotheses to explain the mass-extinctions at the Cretaceous-
Tertiary boundary (KTB) are a large meteorite impact and widespread volcanism. High …

There are currently~ 140 known hypervelocity impact craters on Earth. They range up to
over 200 km in diameter (D) and have ages from recent to PreCambrian. The highly active …

Shock waves induce peculiar defects in quartz: shock mosaics, high-pressure polymorphs
(coesite and stishovite), diaplectic glass and 'planar deformation features'(PDFs). Together …

Our studies of the 105 kg Chico L chondrite show that it contains∼ 60% impact melt and the
largest volume of impact melt recognized in stony meteorites. We suggest that it is part of a …