HOME >> BIOLOGY >> NEWS
Seabed secrets in English clay

Fossilized organic molecules of green sulfur bacteria are helping to unlock secrets of what may have been a period of helter-skelter climate change and mass kills of sea life during the Jurassic Period some 150-160 million years ago.

The fossils were found in sedimentary rock commonly used to make house bricks in England, quarried from what is called the Oxford Clay Formation.

The findings are reported in the May issue of the journal Geology (now online to subscribers.) Fabien Kenig, associate professor of earth and environmental sciences at the University of Illinois at Chicago, is the article's lead author. Contributors include John Hudson of the University of Leicester, Jaap Sinninghe Damst of the Royal Netherlands Institute for Sea Research and Brian Popp of the University of Hawaii.

Kenig and his colleagues have spent almost 15 years trying to learn why the bacteria -- which thrive only in oxygen-free but hydrogen sulfide-rich aquatic environments -- apparently co-existed with ancient, oxygen-breathing sea reptiles and other bottom-dwellers in a shallow part of a sea that's now the region of east-central England around Peterborough.

"It should have been one or the other," said Kenig. "You can't have both at the same time. They cannot co-exist."

Using solvents to extract oily lipids from sediments, the geologists identified the signature organic compounds of green sulfur bacteria using gas chromatographs and mass spectrometers.

"Molecules of green sulfur bacteria have a very specific, recognizable pattern or trace that allowed us to identify them in every sample of the Oxford Clay shale that we studied," said Kenig. "We found that their presence was not just an accidental find in a few samples, but corresponds to a recurring, ubiquitous process during deposition of those sediments."

A casual look at a piece of sedimentary rock embedded with fossils sugges
'"/>

Contact: Paul Francuch
francuch@uic.edu
312-996-3457
University of Illinois at Chicago
23-Apr-2004


Page: 1 2

Related biology news :

1. Seabed Silt In Indian Ocean Consists Of Remains Of Summer Plankton
2. Anthrax enzyme images reveal secrets of antibiotic resistance, suggest new drug design
3. Genes expose secrets of sex on the side
4. Entrepreneurs to be told how natures secrets can improve business
5. Stuck on you: Scientists lay bare secrets of bacterial attachment proteins
6. Researchers uncover secrets of immune systems munitions factory
7. Using statistics to decipher secrets of natural mutation
8. Revealing bizarre deep-sea secrets
9. Access to DNA secrets yields better understanding of genes, possible tool for disease diagnosis
10. U-M scientists use 21st-century technology to probe secrets of M. tuberculosis
11. Sticklebacks reveal secrets to evolutionary change in Stanford study

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


(Date:1/10/2019)... ... January 09, 2019 , ... Dr. Beanlands is the Vered Chair and Division ... He is also Director of its National Cardiac PET Centre, and Professor in ... Radiology, and in the Department of Cellular and Molecular medicine. , He is a ...
(Date:1/10/2019)... ... January 10, 2019 , ... A major goal for ... vitro studies and significantly more expensive in vivo studies in order to reduce ... address this need, researchers have begun to adopt 3D cell culture models which ...
(Date:1/8/2019)... , ... January 07, 2019 , ... ... compliance solutions, is proud to welcome Thomas Kennedy as head of sales and ... CEO for PureWay. , Mr. Kennedy has previously worked for Johnson & Johnson ...
Breaking Biology News(10 mins):
(Date:2/2/2019)... , ... February 01, 2019 , ... Stay on top ... medical device and food industries. Access to all webinars is free, so be sure ... in your field! Visit http://www.xtalks.com to check out our upcoming webinars, or ...
(Date:1/30/2019)... ... January 29, 2019 , ... K&R Negotiations announced today that ... a special online event titled: Six Ways to Shorten the Sales Cycle : ... 13, 2019 on the BrightTALK network. , Negotiation expert Kresic will discuss the ...
(Date:1/30/2019)... ... 30, 2019 , ... In 2016, Veronafiere and Vinitaly established ... give recognition to producers whose work focuses entirely on natural, organic and biodynamic, ... Italy, contemporaneously to the 5StarWines blind tasting organized from April 3rd to 5th ...
(Date:1/24/2019)... ... 22, 2019 , ... Outsourcing trials to contract research organizations ... and RFP creation and management generally requires manual effort. Additionally, each vendor organizes ... These challenges can ultimately lead to study start delays and change orders because ...
Breaking Biology Technology:
Cached News: