New Insight into Factors Controlling Organic Matter Distribution in Lower Cambrian Source Rocks: A Study from the Qiongzhusi Formation in South China - INSU - Institut national des sciences de l'Univers Access content directly
Journal Articles Journal of Earth Science Year : 2020

New Insight into Factors Controlling Organic Matter Distribution in Lower Cambrian Source Rocks: A Study from the Qiongzhusi Formation in South China

Abstract

Sedimentary organic matter (OM) is a major reservoir of organic carbon in the global carbon cycle. Despite many studies, there still exist many debates on the mechanism of OM accumulation and preservation in marine sediments. We present a new field study of a Lower Cambrian shallow marine shelf sequence in the northern edge of the Yangtze Plate, China. Our results show that palynological OM and biogenic silica (Bio-Si) could be used alongside more conventional redox and paleo-productivity proxies to study the distribution of OM in marine sediments. The qualitative and quantitative study of palynological OM provides more detailed information on the nature of sedimentary organic carbon, which can be helpful in the assessment of primary productivity and OM preservation. In addition, the presence of Bio-Si stimulates the physical preservation of OM. Further analysis indicates that an increase in Bio-Si can promote OM preservation. This case-study provides insight into the intertwined factors controlling OM accumulation in the Early Cambrian.
Fichier principal
Vignette du fichier
s12583-019-1240-y.pdf (2.33 Mo) Télécharger le fichier
Origin Files produced by the author(s)

Dates and versions

hal-04219733 , version 1 (09-07-2024)

Identifiers

Cite

Shucan Zheng, Qinglai Feng, Nicolas Tribovillard, Thomas Servais, Yan Zhang, et al.. New Insight into Factors Controlling Organic Matter Distribution in Lower Cambrian Source Rocks: A Study from the Qiongzhusi Formation in South China. Journal of Earth Science, 2020, 31 (1), pp.181-194. ⟨10.1007/s12583-019-1240-y⟩. ⟨hal-04219733⟩
14 View
0 Download

Altmetric

Share

Gmail Mastodon Facebook X LinkedIn More