|本期目录/Table of Contents|

[1]谭丽娟,师萌,葛毓柱,等.三叠系—侏罗系环境变化及界线研究方法综述[J].地球科学与环境学报,2018,40(03):285-300.
　TAN Li-juan,SHI Meng,GE Yu-zhu,et al.Review on Triassic-Jurassic Environmental Changes and Boundary Research Methods[J].Journal of Earth Sciences and Environment,2018,40(03):285-300.
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三叠系—侏罗系环境变化及界线研究方法综述(PDF)
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《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

卷:
第40卷
期数:
2018年第03期
页码:
285-300
栏目:
基础地质与矿产地质
出版日期:
2018-05-15

文章信息/Info

Title:
Review on Triassic-Jurassic Environmental Changes and Boundary Research Methods
文章编号:
1672-6561(2018)03-0285-16
作者:
谭丽娟; 师萌; 葛毓柱; 郭优优
中国石油大学(华东) 地球科学与技术学院，山东 青岛 266580
Author(s):
TAN Li-juan;  SHI Meng;  GE Yu-zhu;  GUO You-you
School of Geosciences, China University of Petroleum, Qingdao 266580, Shandong, China
关键词:
三叠系—侏罗系界线; 环境变化; 种群灭绝; 中部大西洋岩浆省; 古生物化石; 碳同位素; 元素分析
Keywords:
Triassic-Jurassic boundary;  environmental change;  population extinction;  central Atlantic magmatic province;  paleontological fossil;  carbon isotope;  elemental analysis
分类号:
P534；Q911.6
DOI:
-
文献标志码:
A
摘要:
三叠纪—侏罗纪之交全球发生了一系列不同程度的生物及环境变化，包括温度上升，气候从干旱过渡到潮湿，海平面快速的海退-海进以及大规模的生物灭绝事件等。相关地质及地球化学方法对全球各地质剖面进行的大量研究认为，中部大西洋岩浆省（CAMP）的密集火山活动所产生的大量CO2及其他火山气体的排放最有可能造成生物灭绝及环境变化。同时，大量轻质碳的输入也扰乱了全球碳循环，造成碳同位素值在该时期出现不同程度和不同次数的负偏移。目前，三叠系—侏罗系界线的研究主要依据生物地层学（如菊石和孢粉化石带的划分），结合地球化学（如碳同位素标定、元素分布分析），综合数据建立地质模型等方法进行。中国三叠系—侏罗系界线研究还很薄弱，主要以生物地层学为主，缺乏地球化学数据。通过总结国际三叠系—侏罗系界线研究尤其是研究方法，对中国三叠系—侏罗系界线研究提供参考。
Abstract:
There have been a series of different levels of biological and environmental changes around the world in Triassic-Jurassic boundary, such as the increasing temperature, the climate changing from arid to humidity, the rapid regression to transgression, and the large scale of biological extinctions, etc. The study on global geological profiles through relevant geological and geochemical methods were carried out. It is considered that large amounts of CO2 and other volcanic gases, generated by intense volcanic activity of the central Atlantic magmatic province (CAMP), are the most likely causes of biological extinctions and environmental changes. Meantime, the eruption of huge amounts of light carbon disturbs the global carbon cycle, and causes the negative deviation with different amplitude and times in carbon isotope values during Triassic-Jurassic. Currently, the study on Triassic-Jurassic boundary was mainly based on biostratigraphy (e.g. the division of the ammonite and palynology fossil zone), combined with geochemistry (e.g. carbon isotopes and other elemental distribution), then the data were synthesized to establish geological numerical simulation. Hitherto, the domestic study primarily concentrated on the palynology whereas short of the geochemical data.The abroad Triassic-Jurassic boundary, especially relevant methods, was summarized to provide a reference for the domestic research.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2017-12-15;修回日期:2018-03-16
基金项目:国家科技重大专项项目(2016ZX05006-007-001)
作者简介:谭丽娟(1968-),女,辽宁大连人,副教授,工学博士,E-mail:tljdqz@163.com。
更新日期/Last Update: 2018-06-05