Navigation Links
Algae and pollen grains provide evidence of remarkably warm period in Antarctica's history
Date:9/30/2009

BATON ROUGE For Sophie Warny, LSU assistant professor of geology and geophysics and curator at the LSU Museum of Natural Science, years of patience in analyzing Antarctic samples with low fossil recovery finally led to a scientific breakthrough. She and colleagues from around the world now have proof of a sudden, remarkably warm period in Antarctica that occurred about 15.7 million years ago and lasted for a few thousand years.

Last year, as Warny was studying samples sent to her from the latest Antarctic Geologic Drilling Program, or ANDRILL AND-2A, a multinational collaboration between the Antarctic Programs of the United States (funded by the National Science Foundation), New Zealand, Italy and Germany, one sample stood out as a complete anomaly.

"First I thought it was a mistake, that it was a sample from another location, not Antarctica, because of the unusual abundance in microscopic fossil cysts of marine algae called dinoflagellates. But it turned out not to be a mistake, it was just an amazingly rich layer," said Warny. "I immediately contacted my U.S. colleague, Rosemary Askin, our New Zealand colleagues, Michael Hannah and Ian Raine, and our German colleague, Barbara Mohr, to let them know about this unique sample as each of our countries had received a third of the ANDRILL samples."

Some colleagues had noted an increase in pollen grains of woody plants in the sample immediately above, but none of the other samples had such a unique abundance in algae, which at first gave Warny some doubts about potential contamination.

"But the two scientists in charge of the drilling, David Harwood of University of Nebraska Lincoln, and Fabio Florindo of Italy, were equally excited about the discovery," said Warny. "They had noticed that this thin layer had a unique consistency that had been characterized by their team as a diatomite, which is a layer extremely rich in fossils of another algae called diatoms."

All re
'/>"/>

Contact: Ashley Berthelot
aberth4@lsu.edu
225-578-3870
Louisiana State University
Source:Eurekalert

Page: 1 2 3 4

Related biology news :

1. Troublesome green algae serve as coating substrate in record-setting battery
2. Green energy from algae
3. Plankton Power and RTDC announce proposed algae-to-biofuels pilot facility on Cape Cod
4. Scientists report first remote, underwater detection of harmful algae, toxins
5. Coralline algae in the Mediterranean lost their tropical element between 5 and 7 million years ago
6. Genes from tiny marine algae suggest unsuspected avenues for new research
7. Genes from tiny algae shed light on big role managing carbon in worlds oceans
8. ISU researcher identifies protein that concentrates carbon dioxide in algae
9. Nanofarming technology harvest biofuel oils without harming algae
10. Mighty diatoms: Global climate feedback from microscopic algae
11. Dust deposited in oceans may carry elements toxic to marine algae
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/11/2014)... at the Department of Energy,s Oak Ridge National ... by R&D Magazine in recognition of the year,s ... the tremendous value of our National Labs," said ... at the National Labs continues to help our ... scientific and technological innovations necessary to remain globally ...
(Date:7/11/2014)... German . ... refraction of X-rays through a specimen instead of attenuation ... are often of much higher quality than those based ... Franz Pfeiffer are particularly interested in developing new approaches ... phase-contrast imaging. One main goal is to make this ...
(Date:7/11/2014)... other group members to reduce aggression and gain access ... for grooming activities shows a certain pattern across the ... journal Biology Letters . , Grooming between individuals ... ulterior motives. To be groomed has hygienic benefits and ... individual can provide access to infants, mating opportunities and ...
Breaking Biology News(10 mins):ORNL wins eight R&D 100s 2ORNL wins eight R&D 100s 3ORNL wins eight R&D 100s 4New simple setup for X-ray phase contrast 2Baboons groom early in the day to get benefits later 2
... against nature when scientists succeeded in creating a new ... naturally occurring enzyme has evolved. This achievement opens the ... applications in medicine and industry. Enzymes are, ... intricate works of nature. These molecular machines which ...
... Over two hundred million humans depend for their subsistence on ... - and orders its partners, the symbiotic algae, to make ... delicate and complex partnerships a collaboration now facing grave ... a primitive animal and zooxanthellae, tiny one-celled plants, is ...
... RELEASE Toward a new generation of vaccines ... Chemical Research Researchers in Colombia, South America, ... of synthetic vaccines that could lead to more effective ... diseases. These conditions kill more than 17 million people ...
Cached Biology News:Birth of an enzyme 2Birth of an enzyme 3Coral's addiction to 'junk food' 2Coral's addiction to 'junk food' 3American Chemical Society's Weekly PressPac -- March 19, 2008 2American Chemical Society's Weekly PressPac -- March 19, 2008 3American Chemical Society's Weekly PressPac -- March 19, 2008 4American Chemical Society's Weekly PressPac -- March 19, 2008 5American Chemical Society's Weekly PressPac -- March 19, 2008 6American Chemical Society's Weekly PressPac -- March 19, 2008 7American Chemical Society's Weekly PressPac -- March 19, 2008 8American Chemical Society's Weekly PressPac -- March 19, 2008 9
(Date:7/11/2014)... BEACH, Fla. , July 11, 2014 /PRNewswire-iReach/ -- ... of high-quality peptides that are used solely in scientific ... honor two successful years in business, Maxim Peptide, which ... has just launched a new and updated website that ... research blog section has been updated with fascinating articles ...
(Date:7/11/2014)... July 11, 2014 EPFL and ... the appointment of John P. Donoghue . The ... Geneva . The new Wyss ... in Geneva , has named as ... John P. Donoghue , founder of Brown University,s ...
(Date:7/10/2014)... 10, 2014 Women in the ... to an additional family planning option. Sayana® Press ... at all levels of the health system and ... a widely used contraceptive—Pfizer’s Depo-Provera® (depot medroxyprogesterone acetate)—with ... is the first of four African countries expected ...
(Date:7/10/2014)... Boston, Mass. (PRWEB) July 10, 2014 ... , today announced that Alan Swahn, a former vice ... Terascala’s executive team as vice president of marketing. Terascala’s ... from Dell and NetApp create the highest performance and ... has been appointed to guide Terascala’s channel expansion and ...
Breaking Biology Technology:Maxim Peptide Celebrates Second Anniversary Online with an Updated Website and Special Deals Section 2John P. Donoghue is Taking the Lead at the Wyss Center and is Appointed Professor at EPFL and University of Geneva 2John P. Donoghue is Taking the Lead at the Wyss Center and is Appointed Professor at EPFL and University of Geneva 3Injectable Contraceptive Launched in Burkina Faso to Expand Choice and Address Unmet Need 2Injectable Contraceptive Launched in Burkina Faso to Expand Choice and Address Unmet Need 3Injectable Contraceptive Launched in Burkina Faso to Expand Choice and Address Unmet Need 4Injectable Contraceptive Launched in Burkina Faso to Expand Choice and Address Unmet Need 5Injectable Contraceptive Launched in Burkina Faso to Expand Choice and Address Unmet Need 6Terascala Expands Executive Team 2Terascala Expands Executive Team 3
... 2012 The National Foundation for Cancer Research announced ... have been awarded the 7th annual Szent-Gyorgyi Prize for ... led to the successful development of a new therapeutic ... By combining traditional Chinese medicine with Western medicine, Drs. ...
... University of Pennsylvania research team have shown that they can ... Pigmentosa, or XLRP, in dogs. The disease in humans ... and results in early, severe and progressive vision loss. It ... degeneration in man. "Every single abnormal feature that ...
... is largely transparent to the eye and, as it turns ... by scientists at Rice University and Rensselaer Polytechnic Institute (RPI) ... wet when clad by a single continuous layer of graphene ... in the online edition of Nature Materials , is ...
Cached Biology Technology:Chinese Scientists Zhen-Yi Wang and Zhu Chen Awarded 7th Annual Szent-Gyorgyi Prize for Progress in Cancer Research 2Chinese Scientists Zhen-Yi Wang and Zhu Chen Awarded 7th Annual Szent-Gyorgyi Prize for Progress in Cancer Research 3Chinese Scientists Zhen-Yi Wang and Zhu Chen Awarded 7th Annual Szent-Gyorgyi Prize for Progress in Cancer Research 4Chinese Scientists Zhen-Yi Wang and Zhu Chen Awarded 7th Annual Szent-Gyorgyi Prize for Progress in Cancer Research 5Gene therapy research from Penn Vet & Scheie Eye Inst. cures retinitis pigmentosa in dogs 2Gene therapy research from Penn Vet & Scheie Eye Inst. cures retinitis pigmentosa in dogs 3Water sees right through graphene 2