Palaeogeographic and Palaeoclimatic Changes Recorded by Microfossils

Topic Information

Dear Colleagues,

The essence of this Topic of Minerals is to report on microfossils that respond to the changing conditions in both marine and terrestrial environments as a result of the interaction between global paleogeographic and climatic changes throughout the Earth’s geological past. Microfossils do not constitute a separate taxonomic group that can be distinguished in the classification of organisms, but contain fossil biota that belong to various systematic groups such as bacteria, protists, fungi, animals and plants. All of these groups of organisms are linked by by the fact that they are studied via microscope. The presence of microfossils in rocks is closely related to the trophic conditions in which they lived. For this reason, microfossils are an important indicator for the interpretation of changes in the environment.

In particular, this Topic is devoted to the interactions between microfossils and the conditions of the abiotic environment that take place from the moment the first signs of life appeared on Earth. The changes in fossil biotic communities related to the climate record over time and accompanied by changes in global palaeogeography will be especially considered. Articles documenting microfossil assemblies that respond to these changes are welcome. We invite you to prepare both review articles and original articles on specialized topics as well as highly specialized articles that open new perspectives.

Dr. Marta Bąk
Dr. Dangpeng Xi
Dr. Erik Wolfgring
Topic Editor

Keywords

Participating Journals

Journal Name	Impact Factor	CiteScore	Launched Year	First Decision (median)	APC
Geosciences geosciences	2.7	5.2	2011	23.6 Days	CHF 1800	Submit
Life life	3.2	2.7	2011	17.5 Days	CHF 2600	Submit
Minerals minerals	2.5	3.9	2011	18.7 Days	CHF 2400	Submit
Quaternary quaternary	2.3	3.6	2018	29.2 Days	CHF 1600	Submit

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19 pages, 16180 KiB  

Open AccessArticle

Late Cretaceous (Santonian to Campanian) Palynological Records and Paleoclimatic Significance from Borehole ZKY2-1, Songliao Basin

by Zihan Zhou, Dangpeng Xi, Lixin Sun, Jing Zhao, Wanshu Yang, Yunqi Ye, Xinyu Meng and Xiaoqiao Wan

Minerals 2023, 13(3), 338; https://doi.org/10.3390/min13030338 - 27 Feb 2023

Viewed by 2202

Abstract

The global temperature gradually decreased from the Cretaceous Santonian to Campanian, while angiosperms evolved rapidly and gradually became dominant. The Songliao Basin, NE China, contains abundant fossil palynomorphs from the Santonian to Campanian age. A thorough investigation of fossil palynomorphs in borehole ZKY2-1 [...] Read more.

The global temperature gradually decreased from the Cretaceous Santonian to Campanian, while angiosperms evolved rapidly and gradually became dominant. The Songliao Basin, NE China, contains abundant fossil palynomorphs from the Santonian to Campanian age. A thorough investigation of fossil palynomorphs in borehole ZKY2-1 of the SW Songliao Basin was performed, reconstructing the vegetation and paleoclimate transition from the Santonian–earliest Campanian (lower Nenjiang Formation) to the late Campanian (Sifangtai Formation). Eighty form-genera from borehole ZKY2-1 have been identified. Three palynomorph assemblages were identified: the Schizaeoisporites–Cyathidites–Inaperturopollenites assemblage, Schizaeoisporites–Classopollis–Retitricolporites assemblage, and Schizaeoisporites–Aquilapollenites–Tricolporopollenits assemblage, from bottom to top. Based on palynological analysis from ZKY2-1 and other boreholes in the Songliao Basin, angiosperm pollen proportion in the Sifangtai Formation is significantly higher than in the lower Nenjiang Formation, indicating rapid angiosperm spread from late Santonian to Campanian. Palynological records indicate relatively humid climate during this period; the content of cool palynological types increased from the lower Nenjiang Formation to the Sifangtai Formation, suggesting a transition from warm to cool climate during the late Santonian–earliest Campanian to the late Campanian. The new palynological evidence from the Songliao Basin reveals a global cooling on land and sea during the late Santonian–Campanian period. This climate change may further promote angiosperm spread during the Late Cretaceous period. Full article

(This article belongs to the Topic Palaeogeographic and Palaeoclimatic Changes Recorded by Microfossils)
(This article belongs to the Section Biomineralization and Biominerals)

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The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.