Detrital zircon records variable expressions of Paleoproterozoic (2.2 - 2.4 Ga) glaciation between Sclavia and Superia supercratons

Seraine, Marina; Spencer, Christopher J.

doi:10.1080/00206814.2022.2148132

Cited by 1 publication

(2 citation statements)

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“…Overall, these data show that paleogeographic con guration played a major role in controlling detrital zircon provenance patterns during the Neoproterozoic. This pattern contrasts with the detrital zircon signature presented during the Paleoproterozoic glaciation, where the sediment dispersal is thought to be tightly related to glacial processes 33 . The distinct signatures might be associated with greater emergence of continents and the evolution of plate tectonics 36 .…”

Section: Detrital Zircon Compilation: Insights Into Provenance and Pa...contrasting

confidence: 70%

“…Multidimensional scaling (MDS) of detrital zircon age spectra is used to understand the tectonic evolution in Proterozoic basins providing key insights into tectonic settings and paleogeographic reconstructions 32,33 . The detrital zircon compilation (U-Pb analysis; see Table 1; Supplementary Material) forms the basis of a subdivision into three landmasses based on paleomagnetically constrained paleogeography 8 and the temporal proximity of the tenure of these continents in the Tonian-Cryogenian periods (1,000-635 Ma).…”

Section: Detrital Zircon Compilation: Insights Into Provenance and Pa...mentioning

confidence: 99%

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Can zircon constrain glacial processes?

Seraine,

Spencer,

Hincks

et al. 2023

Preprint

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Zircon grains provide insights into crustal production and loss via erosion throughout Earth’s history. We apply multi-dimensional scaling of U-Pb detrital zircon compilations and demonstrate that these depositional patterns were primarily influenced by the rifting of Rodinia and the assembly of Gondwana supercontinents. We identify two-step changes in a zircon dataset spanning the tenure of these continental aggregations, defined by an increase in δ18O values related to the Sturtian and Marinoan ‘Snowball Earth’ glaciations. Correlation between magmatic and detrital zircon Hf and O isotopes implies a flux of old (radiogenically enriched) sediment multiple times during the Tonian and Cryogenian. εHf/δ18O signature at 690 Ma indicates a major flux of old sediment into magmatic systems, which we interpret as due to deep glacial erosion of continental crust during Cryogenian glaciations, corroborating prior studies. This work provides a new quantitative perspective on orogenic and climatic processes that supply sediments to magmatic systems.

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Section: Detrital Zircon Compilation: Insights Into Provenance and Pa...contrasting

confidence: 70%

Section: Detrital Zircon Compilation: Insights Into Provenance and Pa...mentioning

confidence: 99%