Navigation Links
Pulverized rocks, coral reefs, seawater chemistry, and continental collisions
Date:7/12/2012

12; doi: 10.1130/G33300.1.

Sulfide-rich environments in shallow water were considered to be sites where animals acquired pre-adaptations enabling them to colonize deep-sea hydrothermal vents and seeps or where they survived extinction events in their deep-sea habitats. In this paper, Steffen Kiel and colleagues document late Cenomanian shallow-water seep communities from the Tropic Shale in the Western Interior Seaway, United States, as a possible refutation of these hypotheses.


Explaining the Phanerozoic Ca isotope history of seawater
Clara L. Blttler et al., Dept. of Earth Sciences, University of Oxford, South Parks Road, Oxford OX1 3AN, UK. Posted online 12 July 2012; doi: 10.1130/G33191.1

This work addresses the puzzling record of the changing isotope ratio of calcium in seawater over the last 500 million years, as reconstructed from fossil material. Seawater chemistry has at times favored the precipitation of different minerals of calcium carbonate, either aragonite or calcite, which exhibit distinct isotope ratios, but shifting between these intervals cannot entirely explain the calcium isotope data. The most significant trends in the data can be explained using a modern budget of calcium isotopes in marine carbonate minerals. Characteristic isotopic signatures are found for three main depositional groups: deep-sea calcite, shallow-water calcite, and shallow-water aragonite. The evolving proportions of these three groups, in ways that are consistent with the fossil record, can successfully explain the major features of the calcium isotope record of ancient seawater.


'/>"/>

Contact: Kea Giles
kgiles@geosociety.org
Geological Society of America
Source:Eurekalert

Page: 1 2 3 4

Related biology news :

1. How old are these rocks, how were they made, and how long ago did these geologic changes happen?
2. Our coral reefs: In trouble - but tougher than we thought
3. Viruses linked to algae that control coral health
4. Scientists join forces in call for action to save coral reefs
5. New research finds increased growth responsible for color changes in coral reefs
6. 12th International Coral Reef Symposium
7. Topics to be discussed during July International Coral Reef Symposium
8. Coral reef experts to present latest coral reef science during July symposium
9. Florida Tech biological sciences professor earns $257,000 NSF grant to study coral diseases
10. Pacific islands may become refuge for corals in a warming climate, study finds
11. Under climate change, winners and losers on the coral reef
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:9/2/2014)... limestone is well known as a result of ... (for example, Archaeopteryx). Now, for the first time, ... equivalent of these outcrops - discoveries which include ... treader. , Despite the abundance of fossils in ... obtained from the Late Kimmeridgian equivalents of these ...
(Date:9/1/2014)... has improved steadily in recent yearsspurred in large part ... poor and disparities continue to widen among socioeconomic and ... School of Public Health (HSPH). , "The study provides ... efforts by many groups and individuals to improve U.S. ... indicates that these efforts need to be expanded," said ...
(Date:9/1/2014)... EDT) It may be possible to train the ... foods, according to new research by scientists at the ... (USDA HNRCA) at Tufts University and at Massachusetts General ... & Diabetes , a brain scan study in adult ... reverse the addictive power of unhealthy food while also ...
Breaking Biology News(10 mins):Exceptionally well preserved insect fossils from the Rhône Valley 2Quality of US diet shows modest improvement, but overall remains poor 2Quality of US diet shows modest improvement, but overall remains poor 3Training your brain to prefer healthy foods 2
... inbreeding is a threat against the viabi lity of ... in the new journal PLoS ONE now demonstrates that ... expected. The results show that it is the most ... breeding population. An important consequence of this action of ...
... has discovered that some stealthy mammals have been doing something ... water. , The results of the research by Vanderbilt's Kenneth ... the science journal Nature. He became curious when he observed ... bubbles while swimming. , "This came as a ...
... which can become less effective over time, might retain ... second drug, according to new research in mice conducted ... of the National Institutes of Health, and their partners. ... of Cancer Cell*. , Tamoxifen has been used successfully ...
Cached Biology News:Wolves are suffering less from inbreeding than expected 2Contrary to common wisdom, scientist discovers some mammals can smell objects under water 2Contrary to common wisdom, scientist discovers some mammals can smell objects under water 3Restoring tamoxifen sensitivity in resistant breast cancer cells 2
(Date:9/2/2014)... Iowa (PRWEB) September 02, 2014 Press ... of ways to take advantage of the people and ... the schedule below are available throughout the day. Additionally, ... requests with POET and DSM representatives as well as ... interview requests is appreciated. , Please remember to ...
(Date:9/2/2014)...  TransCelerate BioPharma Inc. ("TransCelerate") today announced that ... personal data in Clinical Study Reports (CSRs) that ... document describes an approach to apply when redacting ... related clinical trial documents, and is available ... TransCelerate CSR Redaction approach is to provide organizations ...
(Date:9/2/2014)... Quincy, MA (PRWEB) September 02, 2014 ... announced today the signage of a distribution agreement ... Azelis is now distributing Myriant’s bio-succinic acid in ... Kingdom and Ireland, targeting customers in the industrial ... chemical distribution powerhouse, Azelis offers a far-reaching chemical ...
(Date:9/2/2014)... SAN DIEGO , Sept. 2, 2014 ... announced that the U.S. Patent and Trademark Office (PTO) ... investigational medication being evaluated for weight loss. NB32 is ... bupropion SR. U.S. Patent No. 8,815,889 claims ... naltrexone and bupropion. The patent expires in 2024. If ...
Breaking Biology Technology:Press agenda for Project LIBERTY Grand Opening 2Press agenda for Project LIBERTY Grand Opening 3Press agenda for Project LIBERTY Grand Opening 4Press agenda for Project LIBERTY Grand Opening 5TransCelerate BioPharma Inc. Releases Recommended Approach for Protecting Personal Data in Clinical Study Reports 2TransCelerate BioPharma Inc. Releases Recommended Approach for Protecting Personal Data in Clinical Study Reports 3Myriant and Azelis Sign European Distribution Agreement for Bio-Succinic Acid 2Orexigen Expands NB32 Intellectual Property Portfolio With New U.S. Patent 2Orexigen Expands NB32 Intellectual Property Portfolio With New U.S. Patent 3Orexigen Expands NB32 Intellectual Property Portfolio With New U.S. Patent 4
... today announced positive results from its Phase IIa ... severely injured trauma patients with hemorrhagic shock causing ... given in addition to standard of care, was ... During hemorrhagic shock, inadequate perfusion of critical organs ...
... 31 Naurex Inc., a clinical stage company developing ... reported that its clinical stage candidate for the treatment ... been selected for inclusion on Windhover,s list of the ... were chosen by a committee that included Windhover Information, ...
... SEATTLE, Aug. 31 /PRNewswire-FirstCall/ - Oncothyreon Inc. (Nasdaq: ... of Julie M. Eastland as Chief Financial Officer ... 2010. Ms. Eastland,s responsibilities will include financial management, ... Eastland brings more than 25 years of financial ...
Cached Biology Technology:Sangart, Inc. Reports Positive Phase IIa Data for Novel Oxygen Therapeutic Agent MP4OX in Severe Trauma Patients 2Sangart, Inc. Reports Positive Phase IIa Data for Novel Oxygen Therapeutic Agent MP4OX in Severe Trauma Patients 3Naurex's Novel Antidepressant GLYX-13 Recognized as One of Windhover's Top 10 Neuroscience Projects to Watch 2Naurex's Novel Antidepressant GLYX-13 Recognized as One of Windhover's Top 10 Neuroscience Projects to Watch 3Naurex's Novel Antidepressant GLYX-13 Recognized as One of Windhover's Top 10 Neuroscience Projects to Watch 4Naurex's Novel Antidepressant GLYX-13 Recognized as One of Windhover's Top 10 Neuroscience Projects to Watch 5ONCOTHYREON APPOINTS JULIE M. EASTLAND AS CHIEF FINANCIAL OFFICER 2
Taq DNA polymerase, 10,000U...
... AmpliTaq DNA Polymerase is the ... PCR process, a testimony to its overall ... profile makes it ideal for PCR applications. ... guarantee reproducible results. ,, AmpliTaq DNA ...
Taq DNA Polymerase (T. aquaticus), 4 x 250 units. For PCR and other procedures requiring DNA polymerase activity at elevated temperatures. Category: Nucleotides & Enzymes & Biochemicals, Modifying En...
... GCpro Taq DNA Polymerase is a versatile ... for all PCR applications. GCpro Taq DNA ... expressed in E. coli, containing the DNA ... enzyme includes a highly processive 5'-3' DNA ...
Biology Products: