Not logged in
PANGAEA.
Data Publisher for Earth & Environmental Science

Chaproniere, George C H; Nishi, Hiroshi (1994): Miocene to Pleistocene planktonic foraminifer biostratigraphy of ODP Leg 135 sites [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.802221, Supplement to: Chaproniere, GCH; Nishi, H (1994): Miocene to Pleistocene planktonic foraminifer biostratigraphy of the Lau Basin and Tongan Platform, Leg 135. In: Hawkins, J; Parson, L; Allan, J; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 135, 207-229, https://doi.org/10.2973/odp.proc.sr.135.117.1994

Always quote citation above when using data! You can download the citation in several formats below.

RIS CitationBibTeX CitationShow MapGoogle Earth

Abstract:
Diverse and well-preserved planktonic foraminifers were recovered from six sites (834-839) drilled in the Lau Basin. Planktonic faunas from the Tongan Platform sites varied from those of the Lau Basin sites by being less well preserved (Site 840) to being very poorly preserved and very sparse (Site 841); at Site 841 most samples were barren.
All sites penetrated a volcaniclastic sequence in which thick ash beds were encountered; foraminifer populations within the ash beds were often very small, making it difficult to obtain biostratigraphic data. No hiatuses were encountered in the upper Miocene to Pleistocene sections of the Lau Basin, but a possible break occurs at Site 840 on the Tongan Platform. Site 834 penetrated through a Quaternary-Pliocene sequence overlying basaltic basement, and topmost Miocene (Zone N17B) sediments interbedded within the volcanic sequence. Site 835 penetrated into the lower Pliocene (Zones N19 to N19-20). Site 836 penetrated the shortest section, with Zone N22 {Globorotalia (Truncorotalia) crassaformis hessi Subzone) directly overlying basalts. Site 837 penetrated into the basal part of Zone N22 (Globigerinoides quadrilobatus fistulosus Subzone) overlying basalt. Site 838 failed to encounter basalts, with the oldest sediment being from Zone N22 (Globigerinoides quadrilobatus fistulosus Subzone). Site 839, within the same basin as Site 838, located Zone N22 (Globigerinoides quadrilobatus fistulosus Subzone) sediments directly overlying igneous basement. Site 840 penetrated into the upper Miocene Zone N17A without encountering any major unconformity. Site 841, studied mainly from core-catcher samples, penetrated a Quaternary to questionable upper Miocene sequence that was in fault contact with middle Miocene (Zones N8 to N9) sediments.
For the Lau Basin sites, reworking was encountered only in Sites 834 and 835. Site 834 was drilled adjacent to the Lau Ridge, on which are developed numerous reef al and shallow-water environments, where erosional conditions could have been expected during sea-level lowstands. Site 835 was drilled in a narrow basin that has been remote from these erosional influences; slumping and erosion of material from the adjacent basin slopes appears to have been the source of the reworking.
For the Tongan Platform sites, reworking was observed only in the lower part of the upper Miocene section at Site 841, where late Eocene larger foraminifers are present in conglomerates and grits. The presence of Globorotalia (Globorotalia) multicamerata and small specimens of Sphaeroidinellopsis spp. in the Pleistocene of Site 840 may indicate reworking, but this is not clear. Unit I, which marks a reduction in volcanic activity in the Lau Basin, ranges in age from the lower part of Zone N22 (Globigerinoides quadrilobatus fistulosus Subzone) at Sites 834 and 835, to within Zone N22 (Globorotalia crassaformis hessi Subzone) at Sites 836 to 838, and within the upper part of Zone N22 (Bolliella praeadamsi Subzone) at Site 839. Units II and III are generally represented by thick to very thick ash beds, which generally contain low-diversity and often poorly preserved assemblages. Igneous sources seem to have remained important contributors of sediment up to the present day.
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Median Latitude: -20.750704 * Median Longitude: -176.549774 * South-bound Latitude: -23.346000 * West-bound Longitude: -177.862000 * North-bound Latitude: -18.501000 * East-bound Longitude: -175.297000
Date/Time Start: 1990-12-21T00:00:00 * Date/Time End: 1991-02-10T20:30:00
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
9 datasets

Download Data

Download ZIP file containing all datasets as tab-delimited text — use the following character encoding:

Datasets listed in this publication series

  1. Chaproniere, GCH; Nishi, H (1994): (Table 1) Planktonic foraminifer biostratigraphy of ODP Site 135-834. https://doi.org/10.1594/PANGAEA.802214
  2. Chaproniere, GCH; Nishi, H (1994): (Table 2) Planktonic foraminifer biostratigraphy of ODP Site 135-835. https://doi.org/10.1594/PANGAEA.802215
  3. Chaproniere, GCH; Nishi, H (1994): (Table 3) Planktonic foraminifer biostratigraphy of ODP Site 135-836. https://doi.org/10.1594/PANGAEA.802216
  4. Chaproniere, GCH; Nishi, H (1994): (Table 4) Planktonic foraminifer biostratigraphy of ODP Site 135-837. https://doi.org/10.1594/PANGAEA.802217
  5. Chaproniere, GCH; Nishi, H (1994): (Table 5) Planktonic foraminifer biostratigraphy of ODP Site 135-838. https://doi.org/10.1594/PANGAEA.802218
  6. Chaproniere, GCH; Nishi, H (1994): (Table 6) Planktonic foraminifer biostratigraphy of ODP Site 135-839. https://doi.org/10.1594/PANGAEA.802219
  7. Chaproniere, GCH; Nishi, H (1994): (Table 7) Planktonic foraminifer biostratigraphy of ODP Site 135-840. https://doi.org/10.1594/PANGAEA.802220
  8. Chaproniere, GCH; Nishi, H (1994): (Table 8) Dominant coiling direction for populations of Globorotalia (G.) cultrata group over different intervals at ODP Site 135-840. https://doi.org/10.1594/PANGAEA.802237
  9. Chaproniere, GCH; Nishi, H (1994): (Table 9) Planktonic foraminifer biostratigraphy of ODP Hole 135-841B. https://doi.org/10.1594/PANGAEA.802233