NDLI: Earth's Oldest (∼ 3.5 Ga) Fossils and the `Early Eden Hypothesis': Questioning the Evidence

Please wait, while we are loading the content...

Earth's Oldest (∼ 3.5 Ga) Fossils and the `Early Eden Hypothesis': Questioning the Evidence

Content Provider	Semantic Scholar
Author	Brasier, Martin D. Green, Owen Lindsay, John Steele, Andrew
Copyright Year	2004
Abstract	We question the biogenicity of putative bacterial andcyanobacterial `microfossils' from3465 Ma Apex cherts of the Warrawoona Group in WesternAustralia. They arechallenged on the basis of integrated multidisciplinary evidenceobtained from field andfabric mapping plus new high-resolution research into theircontext, sedimentology,filament morphology, `septation' and arrangement. They cannotbe distinguished from(and are reinterpreted as) secondary artefacts of amorphouscarbon that formed duringdevitrification of successive generations of carbonaceoushydrothermal dyke vein quartz.Similar structures occur within associated carbonaceous volcanicglass. The nullhypothesis of an abiotic or prebiotic origin for such ancientcarbonaceous matter issustained until mutually supporting contextural, morphologicaland geochemicalevidence for a bacterial rather than abiotic origin is forthcoming.
Starting Page	257
Ending Page	269
Page Count	13
File Format	PDF HTM / HTML
DOI	10.1023/B:ORIG.0000009845.62244.d3
Volume Number	34
Alternate Webpage(s)	http://www.lpi.usra.edu/lpi/lindsay/papers/eden.pdf
Alternate Webpage(s)	https://doi.org/10.1023/B%3AORIG.0000009845.62244.d3
Journal	Origins of life and evolution of the biosphere
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in