Late Pliocene dinoflagellate cyst and diatom analysis from a high resolution sequence in DSDP Site 594, Chatham Rise, south west Pacific

Author(s): McMinn, Andrew; Howard, William R.; Roberts, Donna
Author Affiliation(s): Primary:
University of Tasmania, Institute of Antarctic and Southern Ocean Studies, Hobart, Tasmania, Australia
Volume Title: Marine Micropaleontology
Source: Marine Micropaleontology, 43(3-4), p.207-221. Publisher: Elsevier, Amsterdam, Netherlands. ISSN: 0377-8398 CODEN: MAMIDH
Note: In English. Includes appendix. 48 refs.; illus., incl. 6 tables, sketch map
Summary: A high resolution mixed carbonate and siliciclastic sequence from DSDP Site 594 contains a detailed record of climate change in the late Pliocene. The sequence can be accurately dated by the LAD of Nitzschia weaveri, the LAD of Thalassiosira insigna, the LAD of T. vulnifica and the LAD of T. kolbei diatom datums. Carbonate content and δ18O signatures provide added resolution and place the sequence between isotope stages 100 and 92. The sequence contains well-preserved and diverse dinoflagellate cyst floras. Use of principal component (PCA) and canonical correspondence analyses (CCA) identifies changes in the assemblages that principally reflect warming and cooling trends. Species associated with warmer climates included Impagidinium patulum, I. paradoxum and I. sp. cf. paradoxum while those from cooler climates include Invertecysta tabulata and I. velorum. CCA is shown to be a valuable method of determining the past environmental preferences of extinct species such as I. tabulata. Abstract Copyright (2001) Elsevier, B.V.
Year of Publication: 2001
Research Program: DSDP Deep Sea Drilling Project
IPOD International Phase of Ocean Drilling
Key Words: 12 Stratigraphy, Historical Geology and Paleoecology; Algae; Assemblages; Biostratigraphy; Canonical analysis; Carbonate sediments; Cenozoic; Chatham Rise; Chemostratigraphy; Clastic sediments; Climate change; Correspondence analysis; DSDP Site 594; Deep Sea Drilling Project; Diatoms; Dinoflagellata; Floral list; High-resolution methods; IPOD; Impagidinium; Invertecysta; Isotope ratios; Isotopes; Leg 90; Marine environment; Marine sediments; Microfossils; Neogene; Nitzschia; O-18/O-16; Oxygen; Pacific Ocean; Paleoclimatology; Paleoecology; Paleotemperature; Palynomorphs; Plantae; Pliocene; Principal components analysis; Sediments; Siliciclastics; South Pacific; Southwest Pacific; Stable isotopes; Statistical analysis; Tertiary; Thalassiosira; Upper Pliocene; West Pacific
Coordinates: S453129 S453128 E1745653 E1745652
Record ID: 2002000875
Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands