(Phys.org)—A group of US researchers studying some of the oldest rocks in the world in the Pilbara region of Western Australia, say they have found the oldest traces of life on Earth, dated at 3.49 billion years old.
An 18-member international team of researchers that includes James Kennett, professor of earth science at UC Santa Barbara, has discovered melt-glass material in a thin layer of sedimentary rock in Pennsylvania, South Carolina, ...
Earth Sciences
Jun 11, 2012
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(PhysOrg.com) -- Microfossils found in Australia show that more than 3.4 billion years ago, bacteria thrived on an Earth that had no oxygen, a finding that boosts hopes life has existed on Mars, a study published Sunday says.
Earth Sciences
Aug 21, 2011
11
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(PhysOrg.com) -- A rock formation in Western Australia was the site of great excitement a couple of decades ago when it revealed evidence of the oldest fossils of bacteria ever found, but a new study casts doubt on those ...
University of Alberta researchers determined that a fossilized dinosaur bone found in New Mexico confounds the long established paradigm that the age of dinosaurs ended between 65.5 and 66 million years ago.
Archaeology
Jan 27, 2011
16
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A previously unknown giant volcanic eruption that led to global mass extinction 260million years ago has been uncovered by scientists at the University of Leeds.
Earth Sciences
May 28, 2009
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(PhysOrg.com) -- Sedimentary rocks created more than 2.4 billion years ago sometimes have an unusual sulfur isotope composition thought to be caused by the action of ultra violet light on volcanically produced sulfur dioxide ...
Earth Sciences
Apr 16, 2009
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(PhysOrg.com) -- New scientific findings by geologist Robert Gastaldo of Colby College in Waterville, Maine, and colleagues call into question popular theories about the largest mass extinction in Earth's history.
Earth Sciences
Mar 2, 2009
3
1
Whether sedimentary rocks store fossil hydrocarbons or act as impermeable layers to prevent the rise of oil, natural gas or stored carbon dioxide—all depends on their porosity. The size, shape, organization, and connectivity ...
Earth Sciences
Apr 22, 2024
0
1
If you've driven the mostly flat stretch of I-25 in Colorado from Pueblo to Trinidad, you've seen them: the Spanish Peaks, twin mountains that soar into the sky out of nowhere, reaching altitudes of 13,628 and 12,701 feet ...
Earth Sciences
Mar 4, 2024
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