News tagged with sedimentary rocks
The adherence mechanism of red algae to the rocks is discovered
Aug 03, 2009 |
4 / 5 (1) |
0
Geologists of the University of Granada, Spain, have described for the first time ever the biological mechanism that explains how calcareous red algae grow on rocky substrates.
Andes Mountains Are Older Than Previously Believed
Space & Earth / Earth Sciences
May 15, 2009 |
4.9 / 5 (7) |
1
(PhysOrg.com) -- The geologic faults responsible for the rise of the eastern Andes mountains in Colombia became active 25 million years ago—18 million years before the previously accepted start date for the ...
Origins of sulfur in rocks tells early oxygen story
Space & Earth / Earth Sciences
Apr 16, 2009 |
4.5 / 5 (8) |
2
(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 ...
Search results for sedimentary rocks
Scientists obtain rocks moving into seismogenic zone
Space & Earth / Earth Sciences
Oct 09, 2009 |
3 / 5 (1) |
0
An international group of scientists aboard the Deep-Sea Drilling Vessel CHIKYU, operated by the Japan Agency for Marine-Earth Science and Technology (JAMSTEC) for the Integrated Ocean Drilling Program (IODP), ...
Bias in the rock record?
Space & Earth / Earth Sciences
Jan 14, 2009 |
3.8 / 5 (6) |
0
(PhysOrg.com) -- The fossil record is known to be biased by the unevenness of geographical and stratigraphical sampling, and the lack of exposed rocks containing fossils. In a recent Perspective in Science [2 Jan ...
Hot springs microbes hold key to dating sedimentary rocks, researchers say
Space & Earth / Earth Sciences
Jan 22, 2008 |
4.2 / 5 (13) |
0
Scientists studying microbial communities and the growth of sedimentary rock at Mammoth Hot Springs in Yellowstone National Park have made a surprising discovery about the geological record of life and the environment.
New evidence puts 'Snowball Earth' theory out in the cold
Space & Earth / Earth Sciences
Mar 23, 2007 |
4.4 / 5 (41) |
0
The theory that Earth once underwent a prolonged time of extreme global freezing has been dealt a blow by new evidence that periods of warmth occurred during this so-called 'Snowball Earth' era.
The Mars Journal Publishes Its First Papers
Dec 15, 2005 |
3 / 5 (2) |
0
The Mars Journal, a new peer-reviewed online open-access scholarly journal, has published its first two papers. The first paper is a 4-page editorial entitled "The Mars Journal" by David A. Paige of the Dept. of Earth and ...
Scientists say that microbial mats built 3.4-billion-year-old stromatolites
Space & Earth / Earth Sciences
Jul 16, 2009 |
4.3 / 5 (8) |
2
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 ...
Did a nickel famine trigger the 'Great Oxidation Event'?
Space & Earth / Earth Sciences
Apr 08, 2009 |
4.5 / 5 (21) |
3
(PhysOrg.com) -- The Earth's original atmosphere held very little oxygen. This began to change around 2.4 billion years ago when oxygen levels increased dramatically during what scientists call the "Great ...
Groundbreaking research changing geological map of Canada
Space & Earth / Earth Sciences
Jul 25, 2007 |
3.7 / 5 (10) |
0
Researchers exploring a remote terrain in Arctic Canada have made discoveries that may rock the world of Canadian geology.
Iron isotopes as a tool in oceanography
Space & Earth / Earth Sciences
Jul 31, 2009 |
3.7 / 5 (3) |
1
New research involving scientists from the National Oceanography Centre, Southampton (NOCS) highlights the potential utility of iron isotopes for addressing important questions in ocean science. The findings are published ...
Researcher investigates ancient geology to understand human development, climate change
Space & Earth / Earth Sciences
Oct 03, 2008 |
4.2 / 5 (10) |
0
(PhysOrg.com) -- To figure out how ancient humans adapted to their environment and constructed civilizations, you need to know the environment in which they lived -- including climate change over thousands of years.
List of search results for sedimentary rocks
