Goldilocks at the dawn of complex life: mountains might have damaged Ediacaran–Cambrian ecosystems and prompted an early Cambrian greenhouse world

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dc.creatorFabrício de Andrade Caxito
dc.creatorLucas Veríssimo Warren
dc.creatorJuliana Okubo
dc.creatorCarlos Ganade de Araujo
dc.creatorCristiano Lana
dc.creatorRobert Frei
dc.creatorGabriel Jubé Uhlein
dc.creatorAlcides Nóbrega Sial
dc.creatorElton Luiz Dantas
dc.creatorAndré Pinto
dc.creatorFilippe Campos
dc.creatorPaulo Henrique Ferreira Galvão
dc.date.accessioned2023-04-18T21:31:37Z
dc.date.accessioned2025-09-09T00:04:47Z
dc.date.available2023-04-18T21:31:37Z
dc.date.issued2021
dc.identifier.doihttps://doi.org/10.1038/s41598-021-99526-z
dc.identifier.issn20452322
dc.identifier.urihttps://hdl.handle.net/1843/52205
dc.languagepor
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofScientific Reports
dc.rightsAcesso Aberto
dc.subjectRochas carbonaticas
dc.subjectOxigenio
dc.subjectNutrientes
dc.subject.otherCarbonate rocks
dc.subject.otherEdiacaran–Cambrian
dc.subject.otherComplex life
dc.titleGoldilocks at the dawn of complex life: mountains might have damaged Ediacaran–Cambrian ecosystems and prompted an early Cambrian greenhouse world
dc.typeArtigo de periódico
local.citation.epage15
local.citation.issue20010
local.citation.spage1
local.citation.volume11
local.description.resumoWe combine U–Pb in-situ carbonate dating, elemental and isotope constraints to calibrate the synergy of integrated mountain-basin evolution in western Gondwana. We show that deposition of the Bambuí Group coincides with closure of the Goiás-Pharusian (630–600 Ma) and Adamastor (585–530 Ma) oceans. Metazoans thrived for a brief moment of balanced redox and nutrient conditions. This was followed, however, by closure of the Clymene ocean (540–500 Ma), eventually landlocking the basin. This hindered seawater renewal and led to uncontrolled nutrient input, shallowing of the redoxcline and anoxic incursions, fueling positive productivity feedbacks and preventing the development of typical Ediacaran–Cambrian ecosystems. Thus, mountains provide the conditions, such as oxygen and nutrients, but may also preclude life development if basins become too restricted, characterizing a Goldilocks or optimal level effect. During the late Neoproterozoic-Cambrian fan-like transition from Rodinia to Gondwana, the newborn marginal basins of Laurentia, Baltica and Siberia remained open to the global sea, while intracontinental basins of Gondwana became progressively landlocked. The extent to which basin restriction might have affected the global carbon cycle and climate, e.g. through the input of gases such as methane that could eventually have collaborated to an early Cambrian greenhouse world, needs to be further considered.
local.identifier.orcidhttps://orcid.org/0000-0002-0335-3667
local.identifier.orcidhttps://orcid.org/0000-0002-2050-6514
local.identifier.orcidhttps://orcid.org/0000-0001-9160-9994
local.identifier.orcidhttps://orcid.org/0000-0002-2896-0551
local.identifier.orcidhttps://orcid.org/0000-0001-6302-9706
local.identifier.orcidhttps://orcid.org/0000-0001-7708-9881
local.identifier.orcidhttps://orcid.org/0000-0001-8988-3783
local.identifier.orcidhttps://orcid.org/0000-0001-7584-0600
local.identifier.orcidhttps://orcid.org/0000-0002-7954-5059
local.identifier.orcidhttps://orcid.org/0000-0001-7183-0368
local.publisher.countryBrasil
local.publisher.departmentIGC - DEPARTAMENTO DE GEOLOGIA
local.publisher.initialsUFMG
local.url.externahttps://www.nature.com/articles/s41598-021-99526-z

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