U-Pb Ages from the Neoproterozoic Doushantuo Formation, China

  title={U-Pb Ages from the Neoproterozoic Doushantuo Formation, China},
  author={Daniel Condon and Maoyan Zhu and Samuel A. Bowring and Wei Wang and Aihua Yang and Yu-gan Jin},
  pages={95 - 98}
U-Pb zircon dates from volcanic ash beds within the Doushantuo Formation (China) indicate that its deposition occurred between 635 and 551 million years ago. The base records termination of the global-scale Marinoan glaciation and is coeval with similar dated rocks from Namibia, indicating synchronous deglaciation. Carbon isotopic and sequence-stratigraphic data imply that the spectacular animal fossils of the Doushantuo Formation are for the most part younger than 580 million years old. The… 

Neoproterozoic glaciation in the Proto-Andes: Tectonic implications and global correlation

The Chiquerio Formation in southern Peru records the only documented Neoproterozoic glacial episode in the entire Andean Belt. We present U-Th-Pb secondary ion mass spectrometry (SIMS) detrital

Provenance and tectonic setting of Neoproterozoic sedimentary sequences in the South China Block: evidence from detrital zircon ages and Hf–Nd isotopes

Neoproterozoic sedimentary sequences in the South China Block provide great opportunity to examine the tectonic evolution and crustal accretion during this period. This study presents U–Pb ages and

Grenvillian orogeny in the Southern Cathaysia Block: Constraints from U-Pb ages and Lu-Hf isotopes in zircon from metamorphic basement

Metamorphic basement rocks in the Cathaysia Block are composed mainly of meta-sediments with different ages. New zircon U-Pb geochronological results from the meta-sedimentary rocks exposed in the

WANCE: A possibly Volcanism-Induced Ediacaran Carbon Isotope Excursion

  • Zhongwu Lan
  • Environmental Science, Geography
    Journal of Earth Science
  • 2022
Four carbonate carbon isotope (δ 13 C carb ) excursions are recognized in the Ediacaran Doushantuo Formation in South China, the genesis of which remains disputed. Whereas three of these δ 13 C carb

U–Pb zircon age of the base of the Ediacaran System at the southern margin of the Qinling Orogen

Global abrupt climate change from Marinoan snowball Earth to greenhouse Earth, recorded as cap carbonate overlain on diamictite, had shed the first light on Cambrian bio-radiation. The most

Reconstructing the strontium isotopic composition of Neoproterozoic seawater

  • Y. Zhou
  • Geography, Environmental Science
  • 2017
The Tonian Period (1000 - c.720 Ma) followed a long interval of relative stasis, in terms of climate, carbon isotopes and biological evolution, and led into the Cryogenian Period of environmental



Age of Neoproterozoic bilatarian body and trace fossils, White Sea, Russia: implications for metazoan evolution.

A uranium-lead zircon age for a volcanic ash interstratified with fossil-bearing, shallow marine siliciclastic rocks in the Zimnie Gory section of the White Sea region indicates that a diverse assemblage of body and trace fossils occurred before 555.3 +/- 0.3 million years ago, making co-occurring trace fossils the oldest that are reliably dated.

U-Pb zircon date from the Neoproterozoic Ghaub Formation, Namibia: Constraints on Marinoan glaciation

Dropstone-bearing glaciomarine sedimentary rocks of the Ghaub Formation within metamorphosed Neoproterozoic basinal strata (Swakop Group) in central Namibia contain interbedded mafic lava flows and

Extinction of Cloudina and Namacalathus at the Precambrian-Cambrian boundary in Oman

Biostratigraphic, carbon isotope, and U-Pb zircon geochronological data from the Ara Group of Oman indicate an abrupt last appearance of Cloudina and Namacalathus coincident with a large-magnitude,

Stable isotopic evidence for methane seeps in Neoproterozoic postglacial cap carbonates

Carbon isotopic and petrographic data from a Neoproterozoic postglacial cap carbonate in south China are reported that provide direct evidence for methane-influenced processes during deglaciation, lending strong support to the hypothesis that methane hydrate destabilization contributed to the enigmatic cap carbonates deposition and strongly negative carbon isotopic anomalies following Neopropriaterozoic ice ages.

Carbon isotopic record of the Latest Proterozoic from Oman

The carbon isotopic ratios of marine carbonate rocks from the latest Precambrian to possibly earliest Cambrian were studied to evaluate possible changes in organic carbon burial and hence in the

Stratigraphic investigations of carbon isotope anomalies and Neoproterozoic ice ages in Death Valley, California

An unusual richness of biogeochemical events is recorded in Neoproterozoic‐ Cambrian strata of the Death Valley region, California, United States. Eight negative carbon isotope (d13C) excursions are

A Newly Discovered Cap Carbonate Above Varanger-Age Glacial Deposits in Newfoundland, Canada

ABSTRACT Discontinuous outcrops of diamictite-bearing units exposed along the southern coast of Conception Bay, Newfoundland, are shown to be Neoproterozoic glacial deposits. These are equivalents of

New constraints on the ages of Neoproterozoic glaciations in south China

The most complete Neoproterozoic successions in south China contain three diamictite intervals in the Changan, Tiesiao, and Nantuo Formations. The youngest and most widespread Nantuo glacial deposit