UTRECHT MICROPALEONTOLOGICAL BUllETINS

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Page Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Abstract . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Chapter I. Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Purpose of investigation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 The formations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 11 Methods of investigation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 12 Wash residues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 13 Acknowledgements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 14 Chapter II. Arenazzolo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 17 Chapter III. Transitional interval. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 21 Lithology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 21 The foraminifera. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 23 . Conclusions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 25 Chapter IV. Trubi . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 27 Lithology '. . . . . . . . . . . .. 27 Section 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 29 Section 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 34 Section Punta Piccola. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 36 Discussion of the lithology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 36 The foraminifera. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 40 Preservation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 40 Benthonic foraminifera. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 40 BIP ratio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 40 Details of the eight meter "Accuracy" section . . . . . . . . . . . . .. 43 Species diversity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 44 Distribution of species. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 48 Planktonic foraminifera. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 56 Species diversity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 56 Distribution of species , 57 Paleobathymetric estimates. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 63 Biostratigraphic position Capo Rossello section . . . . . . . . . . . . . . . .. 72 Chapter V. Monte Narbone formation. . . . . . . . . . . . . . . . . . . . . . . . . .. 77 Lithology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 77 Discussion of the lithology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 83
The foraminifera. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 86 Preservation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 86 Benthonic foraminifera " 86 B/P ratio. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 86 Species diversity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 87 Distribution of species. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 91 Planktonic foraminifera. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 97 Species diversity , 97 Distribution of species , 98 Paleobathymetric estimates. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 105 Biostratigraphic position Punta Piccola section. . . . . . . . . . . . . . . . .. 107 Chapter VI. Synthesis. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 111 Benthonic foraminiferal associations throughout the South Sicilian Pliocene. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 111 Arenazzolo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 115 Trubi. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 117 Monte Narbone formation. . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . .. 122 Chapter VII. The salinity crisis. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 125 Chapter VIII. Taxonomic notes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 129 Numbered literature referring to bathymetric range charts. . . . . . . . . .. 135 References cited in the text. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 139 50 figures, 8 plates
Page 1 and 2: UTRECHT MICROPALEONTOLOGICAL BUllET
Page 3: QUANTITATIVE FORAMINIFERAL ANALYSIS
Page 7 and 8: Benthonic and planktonic foraminife
Page 9 and 10: and considerable lowering of the er
Page 11 and 12: topmost Messinian evaporites, chara
Page 13 and 14: literature together with Pachysphae
Page 16 and 17: Data and conclusions from the earli
Page 18 and 19: 2 3 Ammonia beccarii Bolivina dente
Page 20 and 21: LITHOLOGY The new exposure to be de
Page 22 and 23: may interfinger. Evidently biogenic
Page 24: CONCLUSIONS The mediocre preservati
Page 27 and 28: 107 107G B.C 107A 106 1394 64 1393
Page 29 and 30: Fig. 9 Laterally displaced loadcast
Page 31 and 32: Orbulina, which in turn seem to dep
Page 33 and 34: 0 10 20cm. L--L--J ~II\\ :::0 if.-
Page 35 and 36: whether its assumed intermediate st
Page 37 and 38: cate that larger burrowing organism
Page 39 and 40: The foraminiferal faunas from the T
Page 41 and 42: 42 43 44 45 sa~ 3 4 4 Astrononion i
Page 43 and 44: the accumulation of silica-rich sed
Page 45 and 46: 1 1 i z 1 1 11 3 1 i ~ . 2 •• 7
Page 47 and 48: ently favoured clayey substrates bu
Page 49 and 50: The next higher part of the section
Page 51 and 52: Cibicides pseudoungerianus appears
Page 53 and 54: In the next higher interval the alt
Page 55 and 56:
high. It remains equally possible t
Page 57 and 58:
I 106 55 52 j 8 Ij I " ~ ~ ! I ll11
Page 59 and 60:
107A 107B 107C 107D 107E 107F 107G
Page 61 and 62:
of the faunas remains practically t
Page 63 and 64:
5 -- 4 3 2 7 - - - - - - - - - - -
Page 65 and 66:
;.Monica Say(32) Todos Santos 8ay (
Page 67 and 68:
1000 m, the latter corresponding to
Page 69 and 70:
In this respect it is interesting t
Page 71 and 72:
for this interval at the three loca
Page 73 and 74:
near-absence and bloom. The level o
Page 75 and 76:
Fig. 30 Punta Piccola section, show
Page 77 and 78:
Chlorite/montmorillonite and albite
Page 79:
most of them are of the order of 15
Page 83 and 84:
The change in colour from cream to
Page 85 and 86:
The foraminiferal faunas from the M
Page 87 and 88:
, " ~ " , , . ~ . ~
Page 89 and 90:
posite- reactions with higher a-val
Page 91 and 92:
------ Cibicides lobatu(us -- Hanza
Page 93 and 94:
Bulimina inflata, Hopkinsina bononi
Page 95 and 96:
Parker, 1954). In the Andaman Sea t
Page 97 and 98:
athymetric distribution is shown in
Page 99 and 100:
in the manganese-rich interbeds (B
Page 101 and 102:
50 1~N 47 46 45 43 4 M 42 L 41 4 39
Page 103 and 104:
Emiliani (1974) analyzed core mater
Page 105 and 106:
20323, was deposited at the transit
Page 107 and 108:
it is realized that the latter two
Page 109 and 110:
FREQUENCY D ISTR I BUTION OF SOME S
Page 111 and 112:
BENTHONIC FORAMINIFERAL ASSOCIATION
Page 113 and 114:
IK < .o~
Page 115 and 116:
ed by the increase of epiphytes and
Page 117 and 118:
G. puncticulata, recorded from Aren
Page 119 and 120:
our sample 93 suddenly shows a B/P
Page 121 and 122:
loss may be due to the folding. The
Page 123 and 124:
shallowing tendency. This quiet sed
Page 125 and 126:
One of the major aims of this inves
Page 127 and 128:
anean evidently had a nutrient supp
Page 129 and 130:
A taxonomical treatment of all figu
Page 131 and 132:
Remarks: Globigerina pseudobesa (Sa
Page 133 and 134:
Remarks: Colalongo and Sartoni (196
Page 135 and 136:
30. Earland, A. (1934). Foraminifer
Page 137 and 138:
Anderson, G. ]. (1963). Distributio
Page 139 and 140:
Hsii, K. J., Cita, M. B. and Ryan,
Page 141 and 142:
Wright, R. (1977). Neogene paleobat
Page 144:
Figs. 1a-b Figs. 2a-b Figs.3a-b Fig
Page 148:
Figs. 1a-c Figs. 2a-c Figs. 3a-c Fi
Page 152:
Fig. 1 Fig. 2 Figs.3a-b Fig. 4 Fig.
Page 156:
Morphological gradation from Globor
show all

UTRECHT MICROPALEONTOLOGICAL BUllETINS

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