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RADI LARIA VOLUME 20 SEPTEMBER 2002 NEWSLETTER OF THE INTERNATIONAL ASSOCIATION OF RADIOLARIAN PALEONTOLOGISTS ISSN: 0297.5270 INTERRAD International Association of Radiolarian Paleontologists A Research Group of the International Paleontological Association Officers of the Association President Past President PETER BAUMBARTNER JOYCE R. BLUEFORD Lausanne, Switzerland California, USA [email protected] [email protected] Secretary Treasurer JONATHAN AITCHISON ELSPETH URQUHART Department of Earth Sciences JOIDES Office University of Hong Kong Department of Geology and Geophysics Pokfulam Road, University of Miami - RSMAS Hong Kong SAR, 4600 Rickenbacker Causeway CHINA Miami FL 33149 Florida Tel: (852) 2859 8047 Fax: (852) 2517 6912 U.S.A. e-mail: [email protected] Tel: 1-305-361-4668 Fax: 1-305-361-4632 Email: [email protected] Working Group Chairmen Paleozoic Cenozoic PATRICIA, WHALEN, U.S.A. ANNIKA SANFILIPPO California, U.S.A. [email protected] [email protected] Mesozoic Recent RIE S. HORI Matsuyama, JAPAN DEMETRIO BOLTOVSKOY Buenos Aires, ARGENTINA [email protected] [email protected] INTERRAD is an international non-profit organization for researchers interested in all aspects of radiolarian taxonomy, palaeobiology, morphology, biostratigraphy, biology, ecology and paleoecology. INTERRAD is a Research Group of the International Paleontological Association (IPA). Since 1978 members of INTERRAD meet every three years to present papers and exchange ideas and materials INTERRAD MEMBERSHIP: The international Association of Radiolarian Paleontologists is open to any one interested on receipt of subscription. The actual fee US $ 15 per year. Membership queries and subscription send to Treasurer. Changes of address can be sent to the Secretary. BIBLIOGRAPHIES: The bibliographies are produced by the Secretary. Any suggestion, reprints of articles and details of omission should be sent to him directly. Please send reprints of any radiolarian article to the Secretary this facilitate the edition of forthcoming bibliographies. RADIOLARIA Newsletter of the International Association of Radiolarian Paleontologists ISSN: 0297-5270 V OLUME 20 S EPTEMBER 2002 Editor: Jonathan Aitchison CONTENTS EDITORS NOTE .....................................................................................................................................2 THE PLIENSBACHIAN TO AALENIAN WORKING GROUP S. Gorican and E.S. Carter.....3 T/J BOUNDARY WORKING GROUP E. S. Carter and Rie S. Hori.....4 PALEOZOIC WORKING GROUP Patricia Whalen.....5 LATE CRETACEOUS – EARLY PALEOGENE WORKING GROUP – UPDATE Chris Hollis.....6 RADIOLARIAN BIBLIOGRAPHY 2001-2002 Jonathan Aitchison.....7 Forum Radiolaria 20 EDITORS NOTE Another year has passed since the last issue Without your contributions many would lose of RADIOLARIA. Doubtless many of you are touch of what is happening in the rad world. looking forward to our next meeting being orga- Unless I get around to producing another issue nized by Peter and colleagues in Laussanne. I before the meeting next year this will be my last hope to see you all there. time as secretary of Interrad and editor of this newsletter. I wish my successor my joy in con- Thanks to all of you who contributed copies tinuing this tradition. or details of publications, working group reports and other material to this rather slim issue. Regards Jonathan Aitchison 2 Radiolaria 20 Forum THE PLIENSBACHIAN TO AALENIAN WORKING GROUP Spela Gorican and Elizabeth Carter The Pliensbachian – Aalenian Working Group was formed in 2000 and the first meeting was held in July 2001 in Ljubljana with six members in attendance: Beth Carter, Paulian Dumitrica, Spela Gorican, Rie Hori, Luis O’Dogherty and Patricia Whalen. The purpose of the group is to produce a catalogue and a zonation (similar to that of Baumgartner et al. 1995) for the Pliensbachian, Toarcian and Aalenian. Zonation of these stages is essential to span the missing interval between the well established Hettan- gian to Sinemurian (Carter et al. 1998) and Middle Jurassic to Lower Cretaceous (Baumgartner et al. 1995) radiolarian biozones. The systematics of 280 taxa has been agreed upon thus far and will be included in the catalogue. Each taxon will be presented with an up-to-date synonymy, original and subsequent definitions, remarks, and data on geographic distribution. Plates will illustrate the holotype and sufficient other specimens from different paleogeographic realms to clearly illustrate intraspecific variability. The biochronological scale will integrate radiolarian-occurrence data from measured sections in the Cir- cum-Pacific belt (Baja California, Oregon, British Columbia, Japan) and the Tethyan realm (Oman, Tur- key, Slovenia, Austria). Jean Guex will be involved in calculating the range chart (protoreferential) using the BioGraph computer program which is based on the Unitary Association Method (UA). Calibration for this new zonation will be based on ammonites co-occurring with radiolarians in Queen Charlotte Is- lands (British Columbia). The first draft of the zonation will be presented at the 6th ISJS meeting in Palermo; the final version is planned for end 2003. 3 Forum Radiolaria 20 T/J BOUNDARY WORKING GROUP Elizabeth S. Carter and Rie S. Hori Studies of the Triassic/Jurassic boundary at Kennecott Point and Kunga Island in Queen Charlotte Is- lands continue. Fieldwork in the summer of 2000 focused on finely detailed sampling of the isotope and radiolarian successions across the boundary interval at both localities. Closely spaced ash beds right around the boundary were collected for age dating and a system of permanent markers was put in place at Kunga Island. A paper discussing the relationship between the observed negative isotope anomaly and the end-Triassic radiolarian extinction was published in a recent issue of Science (Ward et al. 2001) (see bibliography this publication for reference and abstract). In other news, IGCP 458 - Triassic-Jurassic Boundary Events, was established in 2001 with funding scheduled for 2001-2005. The leaders of this project are Jozsef Pálfy (Hungary), Steven Hesselbo (UK) and Chris McRoberts (USA). Several Interrad members (Beth Carter, Jean Guex, Rie Hori, Keisuke Ishida, Atsushi Matsuoka, and Kagan Tekin) are currently involved in this project. If any others are interested, please contact Jozsef Pálfy ([email protected]). At the first Workshop of Project 458 in Taunton, England, October 2001, our Queen Charlotte Islands group (Haggart et al. - see bibliography this issue) presented a poster reporting multidisciplinary results. An abstract on the radiolarian fauna was submitted also. Updated results on T-J boundary sections in Queen Charlotte Islands will be presented at the 6th.Jurassic Symposium in Palermo, Sicily this coming September 2002. News of T/J boundary study from Japan: Rie Hori is reexamining radiolarian biostratigraphy at the T/J boundary in the Inuyama area for detail comparison with recent radiolarian data from Queen Charlotte provided by Beth Carter and, together with a student, is studying geochemical analysis in the boundary layers. Preliminary results suggest an influence of impact ejecta existing in the T/J boundary strata. A. Matsuoka, and N. Suzuki are also summarizing radiolarian data at the T/J boundary from Philippine and Japan as co-working project. These results will be discussed at the workshop, Okinawa Is., No- vember 2002. We would be pleased if other workers concerned with radiolarians around the T-J boundary would please send news of their activities to either E.S. Carter of R.S. Hori for inclusion in the next Working Group Report in RADIOLARIA. 4 Radiolaria 20 Forum PALEOZOIC WORKING GROUP Dear Paleozoic Colleagues, We look forward to hearing about your research activities and recent publications. If you would take the time to complete the following questionnaire, the editor can include it in the next version of this newsletter. Please send contributions via email. Thank you. Patricia Whalen EMAIL OR FAX: Email: [email protected] FAX: 501-253-2031 MAIL: Dr. Patricia Whalen, Department of Geosciences, University of Arkansas, Fayetteville, 118 Ozark Hall, Fayetteville, AR 72701, U.S.A 1. NAME: 2. ADDRESS: 3. PHONE: 4. FAX: 5. EMAIL: 6. OCCUPATION: For the next three questions, 7-9, it would be very helpful if you wrote a short paragraph describing the highlights of your research and field work - what you are really excited about. Also important are the projects that you are supervising with your graduate students and post-docs. Don't let this form cramp your style - just let us know what you have been doing! 7. CURRENT RESEARCH INTERESTS/PROJECTS, INCLUDING THE WORK OF YOUR GRADUATE STUDENTS AND POST-DOCS: 8. NEWS AND ANNOUNCEMENTS: 9. FIELD WORK, TRAVEL AND CONFERENCES: 10: RECENT PUBLICATIONS: 5 Forum Radiolaria 20 LATE CRETACEOUS – EARLY PALEOGENE WORKING GROUP - UPDATE Members Yoshiaki Aita, Marta Bak, Peter Baumgartner, Kjell Bjørklund, Chuck Blome, Taniel Danel- ian, Paulian Dumitrica, Valesca Portilla Eilert, John Gregory, Chris Hollis, Donna Hull, Liu Jianbing, Kiyoshi Kawabata, Irina Khokhlova, Hsin Yi Ling, Marta Marcucci, Atsushi Matsuoka, Cathy Nigrini, Akiko Nishimura, Irina Popova, Mensi Rela, Toyasaburo Sakai, Annika Sanfilippo, Tatiana Shikova, Torstein Steiger, Osamu Takahashi, Elspeth Urquhart, Valentina Vishnevskaya. Co-chairs Hollis and Sanfilippo Aim of working group: The aim of this working group is to co-ordinate research effort in Late Creta- ceous-Eocene radiolarians
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  • The Recent Foraminifera and Facies of the Bass Canyon: a Temperate Submarine Canyon in Gippsland, Australia

    The Recent Foraminifera and Facies of the Bass Canyon: a Temperate Submarine Canyon in Gippsland, Australia

    Journal of Micropalaeontology, 22: 63–83. 0262-821X/03 $15.00 2003 The Micropalaeontological Society The Recent foraminifera and facies of the Bass Canyon: a temperate submarine canyon in Gippsland, Australia ANDREW J. SMITH & STEPHEN J. GALLAGHER School of Earth Sciences, The University of Melbourne, Victoria 3010, Australia (e-mail: [email protected]) ABSTRACT – This study describes the foraminifera and facies of a large submarine canyon: the Bass Canyon, in the Gippsland Basin off the coast of southeastern Australia. The study incorporates facies analyses and interpretations of three types of foraminiferal distributional data: forms alive at time of collection, recently dead forms and relict forms. Four principle biofacies types occur: (1) middle shelf to shelf-break carbonate sand; (2) oxic upper to middle bathyal carbonate sand and gravel, with abundant bryozoans; (3) reduced oxic middle bathyal carbonate sand and gravel and (4) lower bathyal oxic muddy sand to Globigerina Ooze. Correspondence Analysis of the 61 parameters (percentage abundance of foraminifera and % carbonate) in 36 samples yielded a clear depth-related pattern, although other related parameters such as dissolved oxygen and substrate also exert control on the foraminiferal assemblages. Relict foraminifera are restricted to shelfal depths, shallower than 145 m. This pattern is similar to other shelf regions in Australia, where shelf areas were exposed during the Last Glacial Maximum, reworking shelf facies shallower than 150 m. The distribution of living foraminifera is similar to the distribution of the total assemblage, suggesting that the region has not been significantly mixed by wave, slump or bioturbation processes. The majority of the modern Bass Canyon foraminiferal assemblages are cosmopolitan species, with few (semi-)endemic taxa that are mostly restricted to the shelf.