HOME >> BIOLOGY >> NEWS
Scientists share multidisciplinary discoveries at 'Earth System Processes'

n_182.htm. Poster Session 30 Abstracts: http://gsa.confex.com/gsa/2001ESP/finalprogram/session_996.htm.

Can you imagine our world being devoid of oxygen for almost half of its history? And suddenly there's an abrupt rise at ~2 ga? This amazing picture of our Earth is finding increasing support from rock record geologic data.

"But what intrigues physical and biological scientists alike is why the rise and why at ~2 ga?" remarked Janet Siefert, co-chair for this session. Siefert is a molecular evolutionist at Rice University in Houston, Texas.

"We know with increasing certainty from geologic biomarkers, fossils, and molecular phylogenies that the organisms most likely responsible for this rise, the ubiquitous cyanobacteria or their ancestors, were surely present at least half a million years prior to the rise. So why the lag?"

The rise of oxygen is a great science question. It is unique because there are as many theories that postulate the event as dominated by physical processes as there are ones that predict it was a biologically mediated phenomenon. This session will bring oceanographers, genome analysts, and geoscientists with their competing theories, together in one venue with the hopes that a more substantive and accurate picture of what may have actually occurred can be brought to the fore.

The newest discoveries are coming from papers that are multidisciplinary in nature:

  • David Catling, from the Space Science Division of the NASA Ames Research Center and the SETI Institute, will build on the idea that the Archean atmosphere was dominated by methane as the primary greenhouse gas, but expands it to include an explanation for the oxidation of Earth. He postulates that the kinetic effects of oxygen and methane are reversed from today; in effect hydrogen escape to space was inescapable and oxygenation of the atmosphere was irreversible.
  • Christian
    '"/>


Contact: Ann Cairns
acairns@geosociety.org
303-447-2020 ext1156
Geological Society of America
13-Jun-2001


Page: 1 2 3 4 5 6 7 8 9

Related biology news :

1. Scientists to prototype cyberinfrastructure for research and education access to ocean observatories
2. Scientists sequence genome of kind of organism central to biospheres carbon cycle
3. Scientists find nanowires capable of detecting individual viruses
4. Scientists discover potential new way to control drug-resistant bacteria
5. Scientists explore genome of methane-breathing microbe
6. Scientists decipher genetic code of biothreat pathogen
7. Stuck on you: Scientists lay bare secrets of bacterial attachment proteins
8. Scientists discover proteins involved in spread of HIV-1 infection
9. Scientists fear new Ebola outbreak may explain sudden gorilla disappearance
10. Scientists reinvent DNA as template to produce organic molecules
11. Scientists visualise cellular handmaiden that restores shape to proteins

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:12/5/2018)... ... December 04, 2018 , ... The new ... in the development of innovative solutions for which high-speed imaging is a necessary ... microfluidics to industrial machinery and instrumentation, allowing partner companies to dedicate their resources ...
(Date:11/27/2018)... ... November 27, 2018 , ... Earthres Group, ... as Chief Operating Officer (COO). Dave joins the executive leadership team at ... internal functions. Dave will also serve in a key strategic role by ...
(Date:11/27/2018)... ... November 27, 2018 , ... Victrex has designed a ... a broader range of usage temperature compared to existing polymers such as PCTFE. ... VICTREX CT™ 200 for dynamic sealing applications where gases such as LNG* are ...
Breaking Biology News(10 mins):
(Date:11/7/2018)... ... November 07, 2018 , ... Since September of this year, ... of the adult tissue stem cell counting problem in stem cell medicine and ... intensifying this effort with new educational publications and presentations at clinical trial supply ...
(Date:11/6/2018)... Nev. (PRWEB) , ... November 06, 2018 , ... ... native mobile app for clinical trial data collection and management. TrialKit ™, ... users with compatible generation devices can quickly and easily sign in to the ...
(Date:11/5/2018)... ... November 05, 2018 , ... USARAD Holdings Inc., the leading ... several healthcare VC firms announces at Distributed Health 2018 conference November 5-6 (Nashville, ... tokens and obtaining its first radiology interpretations, one of the first known true ...
(Date:11/5/2018)... (PRWEB) , ... November 05, 2018 , ... ... for access to 2Blades’ Transcription Activator Like (TAL) effector code technology for applications ... commercial uses of the technology in plants. Since its discovery in 2009, the efficacy ...
Breaking Biology Technology:
Cached News: