Late Tertiary Planktonic Foraminifera from Southern Taiwan

• Main Author: Huang Tunyow
• Format: Report
• Language: English
• Published: Tohoku University 1967
• Subjects: Pacific; Planktonic foraminifera
• Online Access: http://hdl.handle.net/10097/28792; https://tohoku.repo.nii.ac.jp/?action=repository_uri&item_id=11989; https://tohoku.repo.nii.ac.jp/?action=repository_action_common_download&item_id=11989&item_no=1&attribute_id=18&file_no=1

The stratigraphic distribution and coiling patterns of 42 species and subspecies of planktonic Foraminifera were studied. Six zones are newly proposed based upon the foraminiferal assemblages from the Hunghuatzu, Kueitangchi, Napalm and Chishan sections. These zones are correlated with those of the Caribbean region and the Philippines. Their order in upward sequence is : Globorotalia fohsi robusta Zone, Globorotalia mayeri-Globoquadrina dehiscens advena Zone, Globigerina nepenthes-Pulleniatina obliquiloculata Zone, Sphaeroidinellopsis seminulina Zone, Globigerinoides quadrilobatus fistulosus Zone and Globorotalia inflata-Globorotalia truncatulinoides Zone. Discussions are given on the zones based on the vertical ranges, characteristic coiling pattern, and joint occurrence of the diagnostic planktonic foraminiferal species. The rock units in the area studied correspond to the Sankyo Group and Miaoli Group in northern Taiwan, and range in age from the Middle Miocene to Pleistocene. The Middle Miocene to Pliocene planktonic Foraminifera of Taiwan form an important tie for correlation between the tropical and temperate regions of the western Pacific region.