ISUASPHAERA ISUA (PFLUG) REVISITED
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dc.contributor.author | Appel P.W.U. | |
dc.contributor.author | Moorbath S. | |
dc.contributor.author | Myers J.S. | |
dc.date.accessioned | 2022-02-12T02:34:02Z | |
dc.date.available | 2022-02-12T02:34:02Z | |
dc.date.issued | 2003 | |
dc.identifier | https://elibrary.ru/item.asp?id=5055538 | |
dc.identifier.citation | Precambrian Research, 2003, 126, 3-4, 309-312 | |
dc.identifier.issn | 0301-9268 | |
dc.identifier.uri | https://repository.geologyscience.ru/handle/123456789/35224 | |
dc.description.abstract | Spherical objects, identified as microfossils and named Isuasphaera isua (Pflug), were reported in 1978 from a chert in the 3.7-3.8Ga Isua Greenstone Belt (IGB). Soon afterwards the biological nature of these objects was questioned on a number of grounds by several authors.Following renewed, recent claims for biogenicity, the locality has been revisited and the host-rock (metamorphosed chert) to the putative microfossils re-examined. Extreme stretching deformation of the metachert cannot possibly have preserved syn-depositional spherical objects. We conclude that the objects (whether biological or not) are entirely post-tectonic and probably result from pre-Quaternary weathering. | |
dc.subject | MICROFOSSILS | |
dc.subject | ISUASPHAERA ISUA | |
dc.subject | ISUA GREENSTONE BELT | |
dc.subject | Quaternary | |
dc.title | ISUASPHAERA ISUA (PFLUG) REVISITED | |
dc.type | Статья | |
dc.subject.age | Cenozoic::Quaternary | |
dc.subject.age | Кайнозой::Четвертичная | ru |
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