ISUASPHAERA ISUA (PFLUG) REVISITED

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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