Navigation Links
September Geology and GSA Today media highlights
Date:8/22/2008

/p>

The middle Cretaceous was a period of extreme climate changes and repeated perturbations of the global carbon cycle, which resulted in widespread deposition of organic carbon-rich sediments. High atmospheric pCO2 has been invoked as the main cause of middle Cretaceous super greenhouse Oceanic Anoxic Events (OAEs) and biocalcification crises. Most of what we know about climate and global change in the middle Cretaceous was derived from the study of geochemical proxies and biotic change in deep-water sequences. Comparatively much less is known from shallow-water carbonate systems, although they are an important part of the global carbon cycle and are very sensitive to oceanographic and climatic forcing. Larger foraminifers were among the most conspicuous carbonate producers in the late Cenomanian carbonate platforms. They were almost completely wiped out by extinction during the late Cenomanian OAE (about 94-93.5 million years ago). Parente et al. show how the pattern of extinction parallels the ecological succession along a gradient of increasing nutrient input predicted by model studies and observed in field studies of nutrient-polluted habitats of larger foraminifers. Correlation by high-resolution carbon-isotope stratigraphy shows that extinction on shallow-water platforms is contemporaneous with an episode of thermal instability in the open ocean. They suggest that enhanced water mass mixing delivered high-nutrient loads to the oligotrophic surface waters of the subtropical Tethys, triggering the stepwise extinction of larger foraminifers and the drowning of many carbonate platforms.


Anhydrite-bearing andesite and dacite as a source for sulfur in magmatic-hydrothermal mineral deposits

Isabelle Chambefort et al., CODES, ARC Centre of Excellence in Ore Deposits, University of Tasmania, Private Bag 79, Hobart, TAS 7001, Australia. Pages 719-722. NSF funding received.

Magmatic anhydrite from andesites and dacites o
'/>"/>

Contact: Christa Stratton
cstratton@geosociety.org
303-357-1093
Geological Society of America
Source:Eurekalert

Page: 1 2 3 4 5 6 7 8 9 10 11 12

Related biology news :

1. September 2008 Biology of Reproduction highlights
2. Story tips from the US Department of Energys Oak Ridge National Laboratory, September 2007
3. Highlights from the September 2007 Journal of the American Dietetic Association
4. September Geology and GSA Today media highlights
5. August 2008 Geology and GSA Today media highlights
6. July 2008 GEOLOGY and GSA Today media highlights
7. Beaded viruses and geology-inspired paintings show the art in science
8. Geology and biology meet in the history of US southwestern desert surface waters
9. March GEOLOGY and GSA TODAY media highlights
10. February Geology and GSA Today media highlights
11. December GEOLOGY and GSA TODAY media highlights
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/2/2015)... , April 2, 2015 ... Q1 2015 attributed to somewhat higher than 125 MSEK. ... the year-end report 2014 that revenues for Q1 2015 ... the company reported for Q4 2014. The operating result ... be negative. The complete interim report will as previously ...
(Date:3/31/2015)...  Elephant Talk Communications Corp. (NYSE MKT: ETAK) ("Elephant ... Defined Network Architecture (ET Software DNA® 2.0) platforms and ... $20.4 million for the year ended December 31, 2014 ... year ended December 31, 2013. At ... its multi-year transition away from its legacy landline business ...
(Date:3/24/2015)... , Mar. 24, 2015 Research and Markets ... the "Global Iris Recognition Market 2015-2019" report ... Global Iris Recognition market to grow at a CAGR ... This report covers the present scenario and the growth ... period 2015-2019. To calculate the market size, the report ...
Breaking Biology News(10 mins):Fingerprint Cards Revises Revenues for Q1 2015 2Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 2Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 3Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 4Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 5Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 6Global Iris Recognition Market 2015-2019 with 3M Cogent, Bioenable Technologies, Cross Match Technology, Iris ID Systems & Safran Dominating 2
... disabilities who are struggling to regain the use of ... engineers and students from Rochester Institute of Technology. ... the human body, to improve the performance of external ... disabilities, such as strokes or major spinal cord injuries, ...
... know all there is to know about Escherichia coli, ... has more than four thousand genes, and the functions ... Siegele, a biology professor at Texas A&M University whose ... , Harmless E. coli strains are normally found in ...
... Understanding, through its Institute for Arctic Studies, has ... Science Foundation through its Integrative Graduate Education and ... grant supports the development of an interdisciplinary doctoral ... a focus on rapid environmental change. "This grant ...
Cached Biology News:Robotics research: Enhancing the lives of people with disabilities 2GIANT-Coli: A novel method to quicken discovery of gene function 2Dartmouth awarded NSF grant for new polar sciences, engineering grad program 2Dartmouth awarded NSF grant for new polar sciences, engineering grad program 3
(Date:5/4/2015)... 4, 2015  RegeneRx Biopharmaceuticals, Inc. (OTCQB: RGRX) ... independent team of researchers from South ... (TB4) plays an important role in accelerating the ... an experimental mouse model, by promoting blood vessel ... dermal tissue.  The research found that the underlying ...
(Date:5/4/2015)... Achieved primarily through a proprietary paraffin and stain additive, ... better detail than the industry standard. But because ... methods, it needed another medium to measure its detail. ... reference because it represents the highest standard of detail ... discovery days of Ultralight Histology was to reverse engineer ...
(Date:5/4/2015)... HONG KONG , May 4, 2015 ... or the "Company"), China,s leading ... cell processing and stem cell storage services, today announced ... Holdings Limited ("Golden Meditech"), a Hong Kong ... the Company, has entered into an agreement (the "Agreement") ...
(Date:5/4/2015)... , May 4, 2015   Tocagen Inc. ... interim data from Tocagen,s ongoing investigational studies were ... of the American Association of Neurological Surgeons (AANS)/Congress ... May 1-2, 2015, in Washington, D.C. ... held a meeting with FDA and continues to ...
Breaking Biology Technology:Researchers Report that Thymosin B4 has a Major Role in Dermal Burn Wound Healing 2Researchers Report that Thymosin B4 has a Major Role in Dermal Burn Wound Healing 3China Cord Blood Corporation Receives Notice of a Transaction Regarding its 7% Senior Convertible Notes Due 2017 Held by KKR 2China Cord Blood Corporation Receives Notice of a Transaction Regarding its 7% Senior Convertible Notes Due 2017 Held by KKR 3Tocagen Presents Updated Interim Survival Data from Ongoing Clinical Studies at American Association of Neurological Surgeons (AANS)/Congress of Neurological Surgeons (CNS) Section on Tumors 2Tocagen Presents Updated Interim Survival Data from Ongoing Clinical Studies at American Association of Neurological Surgeons (AANS)/Congress of Neurological Surgeons (CNS) Section on Tumors 3Tocagen Presents Updated Interim Survival Data from Ongoing Clinical Studies at American Association of Neurological Surgeons (AANS)/Congress of Neurological Surgeons (CNS) Section on Tumors 4Tocagen Presents Updated Interim Survival Data from Ongoing Clinical Studies at American Association of Neurological Surgeons (AANS)/Congress of Neurological Surgeons (CNS) Section on Tumors 5
... Texas, June 22, 2011 Five exceptional oncology ... McKesson Specialty Care Solutions | US Oncology ... their patients. The Excellence in Oncology Nursing Award honors those ... who exemplify competency, courage and determination in providing the highest ...
... June 22, 2011 The Roche manuscript: "Immunoglobulin Domain ... Bispecific IgG Antibodies" has been published in the prestigious ... USA (PNAS). Corresponding authors are Wolfgang Schaefer, ... and Christian Klein, Head of Oncology Programs, Discovery Oncology ...
... June 22, 2011 VENENUM Biodesign, a drug discovery ... compound collection to identify potential therapeutic agents against its ... that it opened its new medicinal chemistry space at ... The facility comprises over 11,000 square feet of ...
Cached Biology Technology:McKesson Specialty Care Solutions | US Oncology Honors Five Exceptional Oncology Nurses for Outstanding Work 2McKesson Specialty Care Solutions | US Oncology Honors Five Exceptional Oncology Nurses for Outstanding Work 3McKesson Specialty Care Solutions | US Oncology Honors Five Exceptional Oncology Nurses for Outstanding Work 4Proceedings of the National Academy of Sciences (PNAS) Publishes Roche Manuscript on Production of Bispecific IgG Antibodies 2VENENUM Biodesign Announces Opening of Medicinal Chemistry Labs 2
SHEEP ANTI FLECAINIDE...
RAT ANTI MOUSE F4/80 ANTIGEN:BIOTIN Immunogen: Thioglycollate stimulated peritoneal macrophages from C57/BL mice...
Sterile glass 5 mm beads that make spreading bacterial and yeast cultures easy. Can be washed, autoclaved and reused....
REGULATED IN DEVELOPMENT AND DNA DAMAGE RESPONSES 1,HIF-1 responsive RTP801...
Biology Products: