STUDY OF MICROSPHERULES IN THE PERMIAN-TRIASSIC BEDDED CHERT OF THE SASAYAMA SECTION, SOUTHWEST JAPAN BY PIXE ANALYSIS

Authors
MIONO S ZHENG CZ NAKAYAMA Y
Citation
S. Miono et al., STUDY OF MICROSPHERULES IN THE PERMIAN-TRIASSIC BEDDED CHERT OF THE SASAYAMA SECTION, SOUTHWEST JAPAN BY PIXE ANALYSIS, Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms, 109, 1996, pp. 612-616
Citations number
8
Categorie Soggetti
Physics, Nuclear","Nuclear Sciences & Tecnology","Instument & Instrumentation
Journal title
Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms → ACNP
ISSN journal
0168583X
Volume
109
Year of publication
1996
Pages
612 - 616
Database
ISI
SICI code
0168-583X(1996)109:<612:SOMITP>2.0.ZU;2-X
Abstract
Microspherules extracted from bedded cherts in the Permian-Triassic bo undary of the Sasayama section in the southwest Japan show morphologic al and chemical patterns characteristic of extraterrestrial origin. We postulate that the Solar System encountered an interstellar molecular cloud and that the microspherules represent the interstellar particle s. We provide a new hypothesis as an alternative for the impact and vo lcanic eruption hypotheses to explain the mass extinction.