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Studies on floristic changes in southern South America since the Cretaceous

白垩纪以来南美洲南部植物区系变化研究

基本信息

批准号：
14255007
负责人：
NISHIDA Harufumi
金额：
$ 16.14万
依托单位：
Chuo University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (A)
财政年份：
2002
资助国家：
日本
起止时间：
2002 至 2005
项目状态：
已结题

项目摘要

Localities extending chronologically from the Late Cretaceous to the Oligocene were selected for fossil sampling to obtain informative materials for the project. Sampling was authorized by documents #4062, and #3708 issued by the Concejo de Monumentos Nacionales de Chile. In addition to previously targeted fossil-bearing sites, we found several new sites. Samples and micropreparations will be archived at the Museo Nacional de Historia Natural in Santiago, Chile. Supplementary duplicates are also deposited in the National Science Museum, Tokyo. The investigation members have continued to study materials collected in the three field researches that had been carried out in Chile during three fiscal years 2002-2004. In addition to the ordinary investigators, two scientists of Fukui Prefectural Dinosaur Museum, Kazuo Terada and Atsushi Yabe, joined the investigation as associate research members. Also a Chilean counterpart Luis Felipe Hinojosa was invited to Japan in June 2005 for material … More investigation and discussion. The results obtained until December 2005 were published as an joint issue including 9 papers, which is entitled "Post-Cretaceous Floristic Changes in Southern Patagonia, Chile" (Nishida H. ed., Chuo University, Tokyo, 107 pp.) at the end of 2005 fiscal year. Pollen analysis on bog-boring cores collected in Chile and Argentina is still in progress under management by Okuda. The core samples collected in Argentina are being investigated by Argentine counterpart scientists represented by Jorge Rabassa of CADIF-CONICET, Ushuaia. The results will be published elsewhere separately.This investigation made progress in understanding the floristic and climatic changes in Patagonia, promoting detailed comparisons with studies on other fossil assemblages known from Patagonia and the Antarctic regions. The new fossil localities, such as the Dorotea and San Sebastian sections, and the extraordinary preservation, such as permineralized plant debris from Riesco Island, will provide further useful data when studied extensively in the future. Less

选择了按时间顺序从白垩纪晚期到渐新世的地点进行化石采样，以获得该项目的信息材料。采样由智利国家纪念碑委员会颁发的文件#4062 和#3708 授权。除了之前确定的化石产地外，我们还发现了几个新地点。样品和微制剂将保存在智利圣地亚哥的国家自然历史博物馆。补充副本也存放在东京国家科学博物馆。调查成员继续研究2002-2004年三个财政年度在智利进行的三项实地研究中收集的材料。除普通调查人员外，福井县立恐龙博物馆的两名科学家寺田一夫和矢部厚也作为副研究员参与了调查。 2005 年 6 月，智利同行路易斯·费利佩·伊诺霍萨 (Luis Felipe Hinojosa) 受邀前往日本进行材料调查和讨论。截至2005年12月获得的结果于2005财年末作为联合期刊发表，包括9篇论文，题为“智利南巴塔哥尼亚的后白垩纪植物区系变化”（西田H.编辑，东京中央大学，107页）。对在智利和阿根廷收集的沼泽钻芯进行的花粉分析仍在奥田的管理下进行。在阿根廷收集的岩心样本正在由乌斯怀亚 CADIF-CONICET 的豪尔赫·拉巴萨 (Jorge Rabassa) 代表的阿根廷同行科学家进行研究。结果将在其他地方单独发表。这项调查在了解巴塔哥尼亚的植物区系和气候变化方面取得了进展，促进了与巴塔哥尼亚和南极地区已知的其他化石组合研究的详细比较。新的化石产地，如多罗泰亚和圣塞巴斯蒂安部分，以及非凡的保存，如来自列斯科岛的全矿化植物碎片，将在未来广泛研究时提供进一步有用的数据。较少的