radiolaria - Marum

Radiolaria 14 Bibliography - 1989
vectors. The results of the main components analysis coincided well
enough to these on the mentioned graph for a half of the taxa; but
the other species appeared practically undistinguished. The cladistic
analysis proved to be helpless for the obtaining phylogeny of the
scores of these close species with the transgressive and
incongruent characters.
Mizutani, S. 1989. Radiolarian fossils and the geologic
history of the Japanese Islands. Observing, watching and
diagnosing the basement rocks. Memorial Volume of Prof.
Kojiro Nakaseko, 61-78.
Mizutani, S., Shao, J.A. & Zhang, Q.L. 1989. The
Nadanhada terrane in relation to Mesozoic tectonics on
continental margins of East Asia. Acta geol. sinica, 3, 15-
29.
Morely, J.J. 1989. Radiolarian-based transfer functions
for estimating paleoceanographic conditions in the South
Indian Ocean. Mar. Micropaleontol., 13/4, 293-307.
A quantitative analysis of 37 radiolarian species in 58 deepsea
surface-sediment samples from the subtropical to the polar
regions of the Indian Ocean produced four geographically distinct
faunal assemblages (transitional, antarctic, subtropical,
subantarctic) . Geographic distributions of these assemblages
coincide with present-day patterns of sea-surface temperature and
water masses. The antarctic factor is almost exclusively found south
of today's Antarctic Polar Front. Highest concentrations of the
transitional factor are recorded at sites positioned between today's
Subtropical Convergence and the Polar Front. The subtropical factor
is dominant in sites north of today's Subtropical Convergence.
Values of these four faunal assemblages in the surface-sediment
samples were regressed onto present-day summer and winter
temperatures of the surface waters overlying each of the core-top
sites. Resulting transfer functions yield temperature estimates
which compare favourably with observed (present-day) summer and
winter sea-surface temperatures, with low standard errors of
estimate (< ±1.9°C) and no clear geographic pattern in maps of the
residuals (difference between observed and estimated sea-surface
temperature).
Morley, J. 1989b. Variations in high-latitude
oceanographic fronts in the southern Indian Ocean; an
estimation based on faunal changes. Paleoceanography, 4/5,
547-554.
Morley, J.J. & Heusser, L.E. 1989. Late Quaternary
atmospheric and oceanographic variations in the western
Pacific inferred from pollen and radiolarian analyses.
Quaternary Sci. Rev., 8, 263-276.
Pollen and radiolarian analyses of sediment from four piston
cores located along a south-north transect (28-44°N) off the east
coast of Japan yield detailed records of variations in terrestrial and
marine climate of this region for the last 140 ka. We propose
specific changes in the seasonal positions of atmospheric pressure
cells to explain these climate variations that have occurred across
the northeast Asian/northwest Pacific region through the most
recent interglacial/glacial cycle. Results of this exercise show that
there are no major discrepancies between climate reconstructions
for mainland Japan inferred from pollen and those for the western
Pacific derived from radiolarians.
Mortlock, R.A. & Froelich, P.N. 1989. A simple
method for the rapid determination of biogenic opal in
pelagic marine sediments. Deep-Sea Res. Part A, oceanogr.
Res. Pap., 36/9, 1415-1426.
Nachev, I.K. & Nachev, C.I. 1989. Distribution and
Evolution of Siliceous Rocks in Bulgaria. In: Siliceous
Deposits of the Tethyan and Pacific Regions. (Hein, J.R. &
Obradovic, J., Eds.). Springer-Verlag, New York, USA. pp.
81-92.
Siliceous rocks are widespread in Bulgaria and span a wide age
range, from Cambrian to Quaternary. Lithologies are of different
types including diatomite, spongolite, radiolarite, siliceous shale,
jasper, silicified limestone, nodular chert, chert pebbles, and
chalcedony sand. The mineral composition is also variable including
quartz, chalcedony, cristobalite, opal-CT, and opal-A. The siliceous
rocks are polygenetic. Their evolution is governed by changes in: (1)
- 37 -
dominance of siliceous organism types, radiolarians, sponges, and
diatoms; (2) types of volcanic activity and tectonic environment;
spreading-center basaltic volcanism, island-arc submarine basaltic
volcanism, and subaerial acid volcanism; (3) sedimentary
environments, openocean metachert; marginal sea siliceous shale
and chert; back-arc trough siliceous shale and bedded chert;
continental margin siliceous shale; intra-arc trough jasper, siliceous
shale, bedded chert, nodular chert, silicified limestone, and vein
agate; back-arc trough radiolarite, spongolite, and nodular chert;
active continental margin silicified limestone, jasper, nodular chert,
and agate; epicontinental sea nodular chert, spongolite, diatomite,
and silicified limestone; Neogene lake diatomite; Quaternary
fluviatile chert pebbles; Quaternary weathering chalcedony sand.
Consequently, the composition and type of siliceous rocks in
Bulgaria correlate well with the development of siliceous organisms,
volcanic activity, and changes in the depositional and tectonic
environments.
Nagai, H. 1989. Supersonic vibration effect on the surface
texture of Jurassic Eucyrtidiellum (Radiolaria). Bull. Nagoya
Univ. Furukawa Mus., 5, 1-19. (in Japanese)
The effect of supersonic vibration on the surface morphology of
Jurassic Eucyrtidiellum was examined, The rock sample used in this
study is a manganese carbonate nodule carrying many
Eucyrtidiellum. It was taken from the southern bank of the Kiso
River, Aichi Prefecture, central Japan (Nagai, 1986). Individuals of
Eucyrtidiellum treated with about 10% hydrochloric acid and without
supersonic vibration have always flaky materials on its surface. But
we can recognize each species clearly. One minute cleaning by
supersonic vibration removes almost of all of these flaky materials.
A part of outer membrane of some individuals was taken away. But
We can identify each species. The surface of Eucyrtidiellum, after
cleaning by supersonic vibration from 5 to 15 minutes, becomes so
smooth like polished metal and shows sometimes small random
perforations. These perforations are quite different from pores of E.
disparile.
Nakaseko, K., Nishimura, A. & Yamauchi, M.
1989. Paleozoic and Mesozoic radiolarian fossils from Japan
3 (Cretaceous 1-6). Atlas of Japanese fossils, 68, 1-24. (in
Japanese)
Nazarov, B.B. 1989. Paleozoic radiolarians; stratigraphic
significance, evolution and relation with the development of
other fauna groups. In: Problemy stratigrafii verkhnego
proterozoya i fanerozoya. (Krasheninnikov, V.A., Eds.),
vol. 431. Trudy - Geologicheskiy Institut (Moskva),
Moscow, USSR. pp. 112-131. (in Russian)
Nazarov, B.B. & Ormiston, A.R. 1989. New species
of Latentifistulidae, Ruzhencevispongidae and
Polyentactinidae (Polycystina, Radiolaria) from the Permian
of the South Urals and Nevada. Paleont. Z., Akad. Nauk SSSR,
2, 13-23.
Nöthig, E.M. & Von Bodungen, B. 1989. Occurrence
and vertical flux of faecal pellets of probably protozoan
origin in the southeastern Weddell Sea (Antarctica). Marine
Ecol. Progr. Ser., 56/3, 281-289.
Amount of faecal material m the water column and in sediment
traps deployed at 7 different stations was investigated during a
cruise of RV "Polarstern" off Vestkapp (73°S, 19°W), Weddell Sea,
Antarctica. Numerous small round, ellipsoidal or triangular pellets
(30 to 150 µm) were identified in the water column and the traps.
Most of the pellets contained intact, but empty, frustules of the
abundant diatoms. We suggest that these small pellets were
produced by protozoan grazers (ciliates, heterotrophic
dinoflagellales, radiolarians and probably foraminifers). These
pellets occurred in numbers up to 214 l -1 in the water column an(d
contributed significantly (36%, of total sedimented faeces volume in
traps) to vertical particle transport of empty but intact diatom
frustules from the euphotic zone to deeper water layers. The
greatest part of the remaining faecal material in the sediment traps
consisted of larger, nearly round faecal pellets (150 to 300 µm).
These faecal pellets are of unknown origin, but could have been
produced by small metazoans.
Obradovic, J. & Gorican, S. 1989. Siliceous deposits
in Yugoslavia: occurrences, types and ages. In: Siliceous
Deposits of the Tethys and Pacific Regions. (Hein, J.R. &
Obradovic, J., Eds.). Springer-Verlag, New York. pp. 51-64.
Siliceous deposits are widespread in Yugoslavia especially in
Mesozoic sections. They first occur in Middle Triassic deposits and