Study gives new answer for muddy mystery | Science News

ADVERTISEMENT

MISSION CRITICAL

Support credible science journalism.

Subscribe to Science News today.


News

Study gives new answer for muddy mystery

By
12:32pm, June 16, 2003

The origin of quartz silt shouldn't be taken for granite.

Geologists interested in the life and times of ancient oceans have long assumed that tiny particles of quartz found in mudstone under former seas got there from sources on land, including granite, limestone, and sandstone.

That's a reasonable assumption, says geologist Jürgen Schieber of the University of Texas at Arlington. Only it's wrong, he contends. In the Aug. 31 Nature, a team led by Schieber shows that quartz silt may have instead emerged from dissolved skeletons of tiny organisms, radiolaria and diatoms, that lived 370 million years ago.

This article is available only to subscribing members. Join the Society today or Log in.

Get Science News headlines by e-mail.

More from Science News

From the Nature Index Paid Content