海洋地质与第四纪地质2012，Vol.32Issue(4)：115-121,7.DOI:10.3724/SP.J.1140.2012.04115
西太平洋暖池核心区晚第四纪颗石藻属种变化及对环境演化的响应
COCCOLITH VARIATIONS IN CENTRAL WEST PACIFIC WARM POOL AND THEIR RESPONSE TO ENVIRONMENTAL CHANGE DURING LATE QUATERNARY
摘要
Abstract
The analysis of coccolith species and percentage for the past 380 ka from Site KX97321-2 of the central West Pacific Warm Pool has been carried out. The results show that the relative abundance of Flo-risphaera profunda increased in the last 380 ka, indicating the decline of nutricline depth and the decrease in primary productivity. The relative abundance of Gephyrocapsa spp. however, dropped in the last 380 ka. Gephyrocapsa caribbeanica was the most abundant species in the Mid-Brunhes interval as the result of the adaptive evolution to the Mid-Brunhes peculiar environment. Based on the spectrum analysis of primary productivity converted from F. profunda, 100 ka and 30 ka cycles were discovered during the last 380 ka. 20 ka cycle was found obvious in the 0 ~ 80 ka and 320~380 ka, and 40 ka cycle in the 80 ~ 320 ka.关键词
颗石藻/晚第四纪/中布容期/西太平洋暖池Key words
Coccolithphores/ Late Quaternary/ Mid-Brunhes/ West Pacific Warm Pool分类
海洋科学引用本文复制引用
梁丹,刘传联,苏翔..西太平洋暖池核心区晚第四纪颗石藻属种变化及对环境演化的响应[J].海洋地质与第四纪地质,2012,32(4):115-121,7.基金项目
国家自然科学基金项目(40876023) （40876023）
