Related Experiment Video
Updated: Jul 11, 2026

Preparation of Authigenic Pyrite from Methane-bearing Sediments for In Situ Sulfur Isotope Analysis Using SIMS
Published on: August 31, 2017
Silicate spherules from deep-sea sediments: confirmation of extraterrestrial origin
Abstract:
Silicate spherules produced by atmospheric melting of meteoric bodies are probably the most common form of extraterrestrial material on the earth. It has never been possible to positively identify such particles although it has been known for more than a century that silicate spherules of suspected extraterrestrial origin are present in deep-sea sediments. One such spherule has been identified as definitely extraterrestrial since its abundances of nonvolatile trace elements closely match those of primitive solar system material.
Related Concept Videos
Deep Sea Microbial Ecology
Diversity of Protists III
Conditions on Early Earth
Conditions on Early Earth
Cell Inclusions
Sulfur Assimilation

