Navigation Links
December 2008 Geology and GSA Today media highlights
Date:11/26/2008

University of California-Berkeley, Berkeley, California 94720, USA. Pages 967-970.

The Middle Stone Age (MSA) of Africa is thought to be a period wherein human ancestors experienced significant advancement of cognitive abilities and physical dexterity, but the nature and timing of these advances is not yet well understood. MSA archaeology at Gademotta, in the Main Ethiopian Rift Valley, is dated to older than 277 thousand years ago, over 40 thousand years older than previously believed. The workmanship and sophistication of tool making at Gademotta and nearby Kulkuletti are markedly advanced for the antiquity of the sites' ages, suggesting that more primitive MSA archaeology should be even older, and that the MSA evolved at different rates in different places. If the emergence of the MSA is linked to the evolutionary appearance of Homo sapiens, as has often been suggested, then by implication early forms of our species may be 100 thousand years older than previously believed. The ready availability of high-quality geological materials such as obsidian may have played a role in rapidly advancing technology in certain areas such as Gademotta/Kulkuletti. The results are based primarily on new 40Ar/39Ar dating of volcanic ashes by Morgan and Renne at the Berkeley Geochronology Center.


Sulfur isotopes in sediment-hosted orogenic gold deposits: Evidence for an early timing and a seawater sulfur source

Zhaoshan Chang et al., CODES ARC Centre of Excellence in Ore Deposits, University of Tasmania, Private Bag 126, Hobart, Tasmania 7001, Australia. Pages 971-974.

Chang et al. report sulfur isotopic compositions of sulfides of various paragenetic stages in the giant Sukhoi Log sediment-hosted orogenic gold deposit. The overall mean value and the significant variability in early pyrite indicates that the sulfur was from the reduction of seawater sulfate. The later generations of sulfide have 34S values in successively smal
'/>"/>

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

Related biology news :

1. December GEOLOGY and GSA TODAY media highlights
2. Highlights from the December 2007 Journal of the American Dietetic Association
3. Story tips from the Department of Energys Oak Ridge National Laboratory, December 2007
4. Emerging field of neuroecology is showcased in December issue of the Biological Bulletin
5. December 2008 highlights from Biology of Reproduction
6. September Geology and GSA Today media highlights
7. October Geology and GSA Today media highlights
8. November GEOLOGY and GSA TODAY Media Highlights
9. February Geology and GSA Today media highlights
10. March GEOLOGY and GSA TODAY media highlights
11. Geology and biology meet in the history of US southwestern desert surface waters
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/11/2015)... , Mar. 11, 2015 Research and Markets ... the "Access Control Market by Product, Application & ... report to their offering. , This ... to reach $10.4 billion by 2020, with an estimated ... report covers the products types such as contact cards ...
(Date:3/10/2015)...  NXT-ID, Inc. (NASDAQ: NXTD ... authentication company focused on the growing mobile commerce ... been named the "Number One Best Tech Gift ... Modern ( http://www.rethinkmodern.com/ ) is a web magazine focused ... that have a unique function or design.  ...
(Date:3/2/2015)... Ala. , March 2, 2015  Businesses ... processing. Data protection company Tharon Rankins Enterprises has ... that provides an ultra-safe way for businesses to ... their financial transactions. Beconux is ... Tharon Rankins Enterprises. Functioning similarly to an ATM ...
Breaking Biology News(10 mins):Global Access Control (Cards & Readers, Biometrics, Controllers, Management Software) Market 2015-2020 - Analysis of the $10 Billion Market 2NXT-ID's Wocket Smart Wallet Named Number One Best Tech Gift for 2015 by Rethink Modern 2NXT-ID's Wocket Smart Wallet Named Number One Best Tech Gift for 2015 by Rethink Modern 3NXT-ID's Wocket Smart Wallet Named Number One Best Tech Gift for 2015 by Rethink Modern 4Personal Data Protection Company Launches New Product 2
... University of the Negev researchers have developed techniques to ... adapt to hostile growing environments. In a recent ... Cell , BGU researchers were able show that by ... growth. Lateral root (LR) development is a highly regulated ...
... a paper published today in PNAS, scientists from the ... new insights into the workings of enzymes from a ... bacterium that causes tuberculosis. The new findings present possible ... pathogen but leave other microorganisms, which are beneficial to ...
... OAK RIDGE, Tenn., Feb. 14, 2011 -- Bioethanol ... become less costly because of plant engineering by The ... Ridge National Laboratory. In a paper published in ... , researchers describe their transgenic version of switchgrass as ...
Cached Biology News:2 in 1: Multi-tasking protein provides new approaches for anti-tuberculosis drugs 2New lignin 'lite' switchgrass boosts biofuel yield by more than one-third 2
(Date:3/26/2015)... ReliantHeart, Inc., an innovative supplier of advanced ... precision transit-time flow measurement solutions, are collaborating on a ... of the HeartAssist5® Left Ventricular Assist Device ... mobility and peace of mind. , The Transonic ... draw 1/6th of the power required by earlier flow ...
(Date:3/25/2015)... pharmaceutical market is one of the most ... its absolute size, plus a growing economy and increasing ... Business Monitor International. The Russian market is set to ... market, with growth estimates around 10-15% annually reaching an ... About Green Cross Green Cross provides ...
(Date:3/25/2015)... 25, 2015 The surging prevalence ... have fuelled social media growth, with over 50% ... in social networking. Insurance companies are making use ... clients and promote a diversity of their services ... increasingly exploiting social networking services as part of ...
(Date:3/25/2015)... and REYKJAVIK, Iceland , March 25, 2015 ... the genome to create better medicine, today congratulated the scientists ... of whole-genome data yet undertaken. The studies ... – are built around the most comprehensive population-wide tally ... deCODE scientists led by Kari Stefansson , deCODE,s founder ...
Breaking Biology Technology:LVAD patients to have greater mobility and peace of mind through Transonic and ReliantHeart’s True Flow collaboration for the HeartAssist5® 2LVAD patients to have greater mobility and peace of mind through Transonic and ReliantHeart’s True Flow collaboration for the HeartAssist5® 3Social Media Role in Global Insurance Industry Examined by Timetric in New Market Research Report Published at MarketPublishers.com 2Social Media Role in Global Insurance Industry Examined by Timetric in New Market Research Report Published at MarketPublishers.com 3Landmark deCODE Studies Demonstrate the Power of Truly Big Genomics for Improving Medicine Worldwide 2
... , , , , , , For 124 high-purity plasmid minipreps , ... Spin columns, , , ... , , Purification module: , ... Throughput: , 124 samples, , ...
... , , , , For purification of PCR products in low elution , volumes , ... Application: , PCR product cleanup, , ... Spin columns, , , Throughput: , ... DNA size range: , 70 bp 4 kb*, ...
... , , , , , ... System for cost-effective, fully automated, high-throughput DNA purification , ... chemistry eliminates the need , for a lysate ... a single plate and a simple bindwashelute procedure. The protocol , ...
Cached Biology Technology:DirectPrep 96 Miniprep System for cost-effective, high-throughput plasmid , DNA purification 2DirectPrep 96 Miniprep System for cost-effective, high-throughput plasmid , DNA purification 3DirectPrep 96 Miniprep System for cost-effective, high-throughput plasmid , DNA purification 4
Immunogen: Synthetic Peptide: C N(185) D G T E F G G S I Y Q K(197) Storage: -20 C, Avoid Freeze/Thaw Cycles...
Request Info...
Use the DUALmembrane kit 3 to carry out DUALmembrane interaction analysis and cDNA library screening to characterize interactions between integral membrane proteins and to identify novel interaction ...
... Quickly, effectively seals labware. Waterproof, ... protects anhydrous materials. Can be folded ... without rupturing. Stretched lengthwise at 21C ... Yet when tension is removed, film ...
Biology Products: