THE DISCOVERY OF CALCAREOUS NANNOFOSSILS IN MESOZOIC MARINE STRATA AT GYANGZE, SOUTHERN TIBET AND ITS SIGNIFICANCE

GAO Lianfeng; SUN Juan; WAN Xiaoqiao; WANG Yu; ZUO Wenzhe

2011 Vol. 27, No. 1

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GAO Lianfeng, SUN Juan, WAN Xiaoqiao, WANG Yu, ZUO Wenzhe. THE DISCOVERY OF CALCAREOUS NANNOFOSSILS IN MESOZOIC MARINE STRATA AT GYANGZE, SOUTHERN TIBET AND ITS SIGNIFICANCE[J]. Marine Geology Frontiers, 2011, 27(1): 33-37.

Citation:

THE DISCOVERY OF CALCAREOUS NANNOFOSSILS IN MESOZOIC MARINE STRATA AT GYANGZE, SOUTHERN TIBET AND ITS SIGNIFICANCE

1 College of Resources and Environments, Hebei Polytechnic University, Tangshan, 063009, China;
2 Key Laboratory of Biogeology and Environmental Geology, Ministry of Education, China University of Geosciences, Wuhan 430074, China;
3 China University of Geosciences, Beijing 100083, China

Received Date: 30 August 2010

Abstract

Abstract

The marine strata around the Jurassic-Cretaceous boundary crop out well in southern Tibet. The samples collected from the Jiabula Formation in the Jiabula-Gokou section of Gyangze area were analyzed by the authors under high-resolution microscope. The calcareous zonal nannofossils of Berriasian-Valanginian stages of early Cretaceous were found for the first time in the section. Some global or intercontinental species with regional significance for correlation were also discovered. In general, the nannofossils discovered have the same features of the Early Cretaceous assemblage. The discovery provides new paleontological evidence for delineation of the Jurassic-Cretaceous boundary in southern Tibet.
- calcareous nannofossils /
- Jurassic-Cretaceous /
- Jabula Formation /
- Gyangze area /
- southern Tibet