Navigation Links
Dinosaur die-out might have been second of 2 closely timed extinctions
Date:9/5/2012

at particular area has very thick sediment deposits and, for a given interval of time, might contain 10 times more sediment as the well-known Hell Creek Formation in Montana. That means scientists have much greater detail as they try to determine what was happening at the time, Tobin said.

The researchers took small surface core samples from rocks and fossils in the Antarctic sediment and used a method called magnetostratigraphy, employing known changes over time in Earth's magnetic field to determine when the fossils were deposited. The thicker sediment allowed dating to be done more precisely.

"I think the evidence we have from this location is indicative of two separate events, and also indicates that warming took place," Tobin said.

There is no direct evidence yet that the first extinction event had any effect on the second, but Tobin believes it is possible that surviving species from the first event were compromised enough that they were unable to survive the long-term environmental effects of the asteroid impact.

"It seems improbable to me that they are completely independent events," he said.


'/>"/>

Contact: Vince Stricherz
vinces@uw.edu
206-543-2580
University of Washington
Source:Eurekalert  

Page: 1 2

Related biology news :

1. Dinosaur bends caused by prolonged diving
2. Engineering technology reveals eating habits of giant dinosaurs
3. Fossil egg discovered in Lleida (Spain) links dinosaurs to modern birds
4. Feathered saurians -- downy dinosaur discovered
5. Newly discovered dinosaur implies greater prevalence of feathers
6. Dinosaurs were warm-blooded reptiles
7. Gaseous emissions from dinosaurs may have warmed prehistoric earth
8. Jurassic pain: Giant flea-like insects plagued dinosaurs 165 million years ago
9. Duck-billed dinosaurs endured long, dark polar winters
10. Exploding dinosaur hypothesis implodes
11. Dinosaur fossil: Even specialized predators didnt turn down free meals
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Dinosaur die-out might have been second of 2 closely timed extinctions
(Date:10/16/2014)... Melbourne researchers have challenged conventional thinking on how the ... new mechanism for how bowel cancer starts. , The ... maintaining and regenerating the ,crypts, that are a feature ... are involved in bowel cancer development, a controversial finding ... existence. , Using 3D imaging technologies, Dr Chin Wee ...
(Date:10/16/2014)... 2014 NXT-ID, Inc. (NASDAQ: NXTD ... authentication company focused on the growing mobile commerce market ... Wocket™, the Smart Wallet, at the 13 th ... leading global conference on the intersection of technology and ... Anderson , founder and publisher of the Strategic News ...
(Date:10/15/2014)... Gauß-Allianz has admitted Johannes Gutenberg University Mainz (JGU) ... science hub continues to maintain a significant nationwide ... , "The acceptance of Johannes Gutenberg University Mainz ... a milestone in the national and international competition ... state of Rhineland-Palatinate can be proud that Mainz ...
Breaking Biology News(10 mins):Cryptic clues drive new theory of bowel cancer development 2NXT-ID Inc. to Present at 13th Annual FiRe Conference 2NXT-ID Inc. to Present at 13th Annual FiRe Conference 3Johannes Gutenberg University Mainz joins Germany's Gauss-Allianz as a full member 2Johannes Gutenberg University Mainz joins Germany's Gauss-Allianz as a full member 3
... differences seen among patients with schizophrenia may be explained by ... risk genes. These findings appear in a new imaging-genetics study ... The study revealed that people with schizophrenia who had ... to develop the illness at a younger age and had ...
... like a bomb shelter, Perry Gerakines makes something ordinary yet truly ... No, this ice needs such intense cold and low pressure to ... Earth. And when Gerakines makes the ice, he must keep the ... pollen. These ultrathin layers turn out to be perfect for ...
... cells during puberty to help navigate the complex social world ... current issue of the Proceedings of the National Academy ... cells you,re born with are all you get. After studies ... wisdom held that such growth was limited to two brain ...
Cached Biology News:Single gene might explain dramatic differences among people with schizophrenia 2NASA Goddard lab works at extreme edge of cosmic ice 2NASA Goddard lab works at extreme edge of cosmic ice 3NASA Goddard lab works at extreme edge of cosmic ice 4Brain adds cells in puberty to navigate adult world 2
(Date:10/22/2014)... Shimadzu Scientific Instruments introduces its Open Solution QuantAnalytics(TM) ... management and clinical markets. The software increases the speed ... users to highlight and review results that are of ... to filter results by group or based on a ... need to sift through analytes of no interest. In ...
(Date:10/22/2014)... WriteResult, LLC – a premier provider of ... a team of researchers from Yale University’s School of ... to provide electronic questionnaire data collection through use of ... in May, aims to evaluate the impact of a ... and participation in urban agriculture to impact their consumption ...
(Date:10/22/2014)... Grace Century, a private equity consultancy ... the addition of Dr. Yousef “Josh” Siddiqui , ... Dr. Siddiqui will provide further healthcare expertise to its ... University College Medical School in the late ... 2001. With further certification as a General Practitioner (GP), ...
(Date:10/22/2014)... According to new market research report "Cloud Professional ... & Support), by Service Model (SaaS, PaaS, IaaS), ... & Community)) - Global Forecast to 2019", published ... Services Market into various sub-segments with an in-depth ... the drivers and restraints for this market with ...
Breaking Biology Technology:Shimadzu Releases QuantAnalytics Open Access LCMS Software Package for Clinical Applications 2myPROpad™ Topic of Panel Discussion at the Yale Food Systems Symposium 2myPROpad™ Topic of Panel Discussion at the Yale Food Systems Symposium 3Dr. Yousef Siddiqui joins the Grace Century Advisory Team 2Cloud Professional Services Market by Public, Private, Hybrid & Community Expected to Reach $34.41 Billion by 2019 - New Report by MarketsandMarkets 2Cloud Professional Services Market by Public, Private, Hybrid & Community Expected to Reach $34.41 Billion by 2019 - New Report by MarketsandMarkets 3Cloud Professional Services Market by Public, Private, Hybrid & Community Expected to Reach $34.41 Billion by 2019 - New Report by MarketsandMarkets 4Cloud Professional Services Market by Public, Private, Hybrid & Community Expected to Reach $34.41 Billion by 2019 - New Report by MarketsandMarkets 5
... 2011 During a ,Day of Science, more than 30 ... what it was like to be scientists for a day ... Inc. (S2S). The "A Day in the Life of a ... programs offered by S2S that seeks to address the fact ...
... (Nasdaq: DNDN ) today announced that management will present ... in New York City, NY on May 25, 2011 at 1:00 ... Palos Verdes, CA on June 7, 2011 at 2:00 p.m. PT ... available for replay from Dendreon,s website, www.dendreon.com .  If you ...
... BRISBANE, Calif., May 19, 2011 InterMune, Inc. (NASDAQ: ... of its 2011 Analyst Day presentations on Thursday, May ... in New York.  Presentations by InterMune,s executive management team ... and a comprehensive update of InterMune,s commercial and scientific ...
Cached Biology Technology:Local Partnership Addresses Lagging Scores and Interest in Science and Math Among Students 2Local Partnership Addresses Lagging Scores and Interest in Science and Math Among Students 3InterMune to Webcast 2011 Analyst Day Presentations 2
... SPA Screening Assay, 5 x ... eliminate lengthy sample extraction procedures and ... 1.32-84.28 ng/ml (4-256 pmol/ml).Sensitivity: 0.65 ng/ml ... C. Category: Drug Screening & Cellular ...
...
Request Info...
... Streptavidin-Horseradish Peroxidase Conjugate, 2 ... reporter enzyme molecules for ... in situ hybridization applications.High ... & Labeling & Detection, ...
Biology Products: