NDLI: Occurrence of Tourmaline in Metasedimentary Rocks of the Isua Supracrustal Belt, Greenland: Implications for Ribose Stabilization in Hadean Marine Sediments

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

Occurrence of Tourmaline in Metasedimentary Rocks of the Isua Supracrustal Belt, Greenland: Implications for Ribose Stabilization in Hadean Marine Sediments

VISTA: A μ-Thermogravimeter for Investigation of Volatile Compounds in Planetary Environments

Modelling the Interior Structure of Enceladus Based on the 2014’s Cassini Gravity Data

Preservation of Biomarkers from Cyanobacteria Mixed with MarsLike Regolith Under Simulated Martian Atmosphere and UV Flux

Characterisation of Growth and Ultrastructural Effects of the Xanthoria elegans Photobiont After 1.5 Years of Space Exposure on the International Space Station

Defining Multiple Characteristic Raman Bands of α-Amino Acids as Biomarkers for Planetary Missions Using a Statistical Method

Origins of Life and Evolution of Biospheres : Volume 46, Issue 1, March 2016

Origins of Life and Evolution of Biospheres : Volume 45

Origins of Life and Evolution of Biospheres : Volume 44

Origins of Life and Evolution of Biospheres : Volume 43

Origins of Life and Evolution of Biospheres : Volume 42

Origins of Life and Evolution of Biospheres : Volume 41

Origins of Life and Evolution of Biospheres : Volume 40

Origins of Life and Evolution of Biospheres : Volume 39

Origins of Life and Evolution of Biospheres : Volume 38

Origins of Life and Evolution of Biospheres : Volume 37

Origins of Life and Evolution of Biospheres : Volume 36

Origins of Life and Evolution of Biospheres : Volume 35

Origins of Life and Evolution of Biospheres : Volume 34

Origins of Life and Evolution of Biospheres : Volume 33

Origins of Life and Evolution of Biospheres : Volume 32

Origins of Life and Evolution of Biospheres : Volume 31

Origins of Life and Evolution of Biospheres : Volume 30

Origins of Life and Evolution of Biospheres : Volume 29

Origins of Life and Evolution of Biospheres : Volume 28

Origins of Life and Evolution of Biospheres : Volume 27

Occurrence of Tourmaline in Metasedimentary Rocks of the Isua Supracrustal Belt, Greenland: Implications for Ribose Stabilization in Hadean Marine Sediments

Content Provider	Springer Nature Link
Author	Mishima, Shinpei Ohtomo, Yoko Kakegawa, Takeshi
Copyright Year	2015
Abstract	Abiotic formation of RNA was important for the emergence of terrestrial life, but the acknowledged difficulties of generating and stabilizing ribose have often raised questions regarding how the first RNA might have formed. Previous researchers have proposed that borate could have stabilized ribose; however, the availability of borate on the early Earth has been the subject of intense debate. In order to examine whether borate was available on the early Earth, this study examined metasedimentary rocks from the Isua Supracrustal Belt. Garnet, biotite, and quartz comprise the major constituents of the examined rocks. Field relationships and the chemical compositions of the examined rocks suggest sedimentary origin. The present study found that garnet crystals contain a number of inclusions of tourmaline (a type of borosilicate mineral). All tourmaline crystals are Fe-rich and categorized as schorl. Both garnet and tourmaline often contain graphite inclusions and this close association of tourmaline with garnet and graphite has not been recognized previously. Garnet–biotite and graphite geothermometers suggest that the tourmaline in garnet experienced peak metamorphic conditions (~500 °C and 5 kbar). The mineralogical characteristics of the tourmaline and the whole rock composition indicate that the tourmaline formed authigenically in the sediment during diagenesis and/or early metamorphism. Clay minerals in modern sediments have the capability to adsorb and concentrate borate, which could lead to boron enrichment during diagenesis, followed by tourmaline formation under metamorphic conditions. Clay minerals, deposited on the early Archean seafloor, were the precursors of the garnet and biotite in the examined samples. The studied tourmaline crystals were most likely formed in the same way as modern tourmaline in marine sediments. Therefore, boron enrichment by clays must have been possible even during the early Archean. Thus, similar enrichment could have been possible during the Hadean, providing a stabilization agent for ribose.
Starting Page	247
Ending Page	271
Page Count	25
File Format	PDF
ISSN	01696149
Journal	Origins of Life and Evolution of Biospheres
Volume Number	46
Issue Number	2-3
e-ISSN	15730875
Language	English
Publisher	Springer Netherlands
Publisher Date	2015-12-02
Publisher Place	Dordrecht
Access Restriction	Subscribed
Subject Keyword	Ribose Borate RNA Marine sediments Early Earth Isua supracrustal belt Life Sciences Astrophysics and Astroparticles Earth Sciences Astronomy, Observations and Techniques Biochemistry
Content Type	Text
Resource Type	Article
Subject	Medicine Ecology, Evolution, Behavior and Systematics Space and Planetary Science

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

Occurrence of Tourmaline in Metasedimentary Rocks of the Isua Supracrustal Belt, Greenland: Implications for Ribose Stabilization in Hadean Marine Sediments.

Selective Stabilization of Ribose by Borate

Borate Minerals and Origin of the RNA World

Depositional environment of graphite-bearing metasedimentary rocks and banded iron formations in >3.7 Ga Isua Supracrustal Belt, West Greenland

Geological comparison between three Eoarchean supracrustal complexes: the Isua Supracrustal Belt, southern West Greenland, Nulliak supracrustal rocks, Labrador, and Nuvvuagittuq supracrustal belt, northern Quebec

Average sedimentary rock rare earth element patterns and crustal evolution: some observations and implications from the 3800 ma isua supracrustal belt, west greenland

Early Archaean Isua supracrustal belt,West Greenland: pilot study of the Isua Multidisciplinary Research Project

Deserpentinization and high-pressure (eclogite-facies) metamorphic features in the Eoarchean ultramafic body from Isua, Greenland

Influence of contamination on banded iron formations in the Isua supracrustal belt, West Greenland: Reevaluation of the Eoarchean seawater compositions

Occurrence of Tourmaline in Metasedimentary Rocks of the Isua Supracrustal Belt, Greenland: Implications for Ribose Stabilization in Hadean Marine Sediments

Similar Documents

Occurrence of Tourmaline in Metasedimentary Rocks of the Isua Supracrustal Belt, Greenland: Implications for Ribose Stabilization in Hadean Marine Sediments.

Selective Stabilization of Ribose by Borate

Borate Minerals and Origin of the RNA World

Depositional environment of graphite-bearing metasedimentary rocks and banded iron formations in >3.7 Ga Isua Supracrustal Belt, West Greenland

Geological comparison between three Eoarchean supracrustal complexes: the Isua Supracrustal Belt, southern West Greenland, Nulliak supracrustal rocks, Labrador, and Nuvvuagittuq supracrustal belt, northern Quebec

Average sedimentary rock rare earth element patterns and crustal evolution: some observations and implications from the 3800 ma isua supracrustal belt, west greenland

Early Archaean Isua supracrustal belt,West Greenland: pilot study of the Isua Multidisciplinary Research Project

Deserpentinization and high-pressure (eclogite-facies) metamorphic features in the Eoarchean ultramafic body from Isua, Greenland

Influence of contamination on banded iron formations in the Isua supracrustal belt, West Greenland: Reevaluation of the Eoarchean seawater compositions

Occurrence of Tourmaline in Metasedimentary Rocks of the Isua Supracrustal Belt, Greenland: Implications for Ribose Stabilization in Hadean Marine Sediments