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Latest Stromatolite Stories

Signs Of Ancient Bacterial Ecosystems Found In Australia
2013-11-13 05:44:54

April Flowers for redOrbit.com - Your Universe Online Scientists trying to reconstruct the rise of life during the period of Earth's history when it first evolved find the task daunting because the planet's oldest sedimentary rocks are not only rare, but nearly always altered by hydrothermal and tectonic activity. A new study, published in the journal Astrobiology, reveals the well-preserved remnants of a complex ecosystem in a nearly 3.5 billion-year-old sedimentary rock sequence in...

Ancient Stromatolites May Have Been Edged Out By Foraminifera
2013-05-29 05:47:20

April Flowers for redOrbit.com - Your Universe Online Stromatolites, “layered rocks” made of calcium carbonate, were the earliest visible manifestation of life on Earth. A team of researchers, including scientists from the Woods Hole Oceanographic Institution (WHOI); Massachusetts Institute of Technology (MIT); the University of Connecticut; Harvard Medical School; and Beth Israel Deaconess Medical Center, suggest that the disappearance of stromatolites may have been driven by...

2009-10-19 14:14:45

Supervolcanoes and cosmic impacts get all the terrible glory for causing mass extinctions, but a new theory suggests lowly algae may be the killer behind the world's great species annihilations. Today, just about anywhere there is water, there can be toxic algae. The microscopic plants usually exist in small concentrations, but a sudden warming in the water or an injection of dust or sediment from land can trigger a bloom that kills thousands of fish, poisons shellfish, or even humans. James...

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2009-07-16 14:25:00

Findings may provide insight into the origins of life on Earth, and even the search for life on Mars Stromatolites are dome- or column-like sedimentary rock structures that are formed in shallow water, layer by layer, over long periods of geologic time. Now, researchers from the California Institute of Technology (Caltech) and the Jet Propulsion Laboratory (JPL) have provided evidence that some of the most ancient stromatolites on our planet were built with the help of communities of equally...

2008-09-19 03:00:23

By Radley, Jonathan Twitchett, Richard J; Mander, Luke; Cope, John Journal, Vol. 165, 2008, pp. 319-332 Jonathan Radley writes: The Penarth Group (of Late Triassic and possibly ranging to Early Jurassic age) of the southern UK marks a marine transgression and the establishment of a shallow epicontinental seaway (Hallam & El Shaarawy 1982; Warrington & Ivimey-Cook 1992), influenced by regressive-transgressive pulses and characterized by rapid facies changes (Hallam & Wignall...

2008-03-17 14:52:35

Viruses and bacterial viruses (known as phages) are among the most abundant life forms on the planet. Two papers published recently in Nature, March 2 and 12, 2008, analyze the geographical distribution of viral communities in modern organosedimentary structures (sedimentary features, built by the interaction of organisms and their environment) known as microbialites, the living analogues of the oldest fossils on Earth, and come up with some surprising nuggets of information.Microbialites...

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2008-03-04 11:59:29

Intriguing find reveals more mysteries from Mexico's Cuatro Cienegas Biologists examining ecosystems similar to those that existed on Earth more than 3 billion years ago have made a surprising discovery: Viruses that infect bacteria are sometimes parochial and unrelated to their counterparts in other regions of the globe. The finding, published online this week by the journal Nature, is surprising because bacteria are ubiquitous on Earth. They've been found from the upper reaches of the...

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2007-02-16 14:20:00

SAN FRANCISCO, Calif. -- Hunting for traces of life on Mars calls for two radically different strategies, says Arizona State University professor Jack Farmer. Of the two, he says, with today's exploration technology we can most easily look for evidence for past life, preserved as fossil "biosignatures" in old rocks. Farmer is a professor of geological sciences in ASU's School of Earth and Space Exploration, where he heads the astrobiology program. He is reporting on his work today (Feb. 16)...

2006-11-21 10:07:21

The origin of life lies in unique ocean reefs, and scientists from the University of Miami's Rosenstiel School of Marine & Atmospheric Science have developed an approach to help investigate them better. A new article published in the November issue of Geology reveals how Dr. Miriam Andres' stromatolite investigation the first of its kind has begun to fingerprint ancient microbial pathways, increasing the understanding of how these reef-like structures form and offering a new way to...

2006-06-07 16:55:46

LONDON (Reuters) - Rock formations in Western Australia may not only be some of the earliest evidence of life on Earth but also the first signs of biodiversity, scientists said on Wednesday. Doubts about whether the formations known as stromatolites were signs of ancient life have persisted since they were described almost three decades ago. Some scientists believe they were formed by micro-organisms that lived on Earth more than 3 billion years ago. Others argued that they were...


Word of the Day
glogg
  • Scandinavian punch made of claret and aquavit with spices and raisins and orange peel and sugar.
This word comes from the Swedish 'glogg,' which is an alteration of 'glodgat,' mulled (wine).
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