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Zepeda, Maybellyn A (1989): Distribution of foraminiferal fauna from ODP Hole 122-762C (Table 1). PANGAEA, https://doi.org/10.1594/PANGAEA.755668, Supplement to: Zepeda, MA (1989): Planktonic foraminiferal diversity, equitability and biostratigraphy of the uppermost Campanian-Maastrichtian, ODP Leg 122, Hole 762C, Exmouth Plateau, NW Australia, eastern Indian Ocean. Cretaceous Research, 19(2), 117-152, https://doi.org/10.1006/cres.1997.0097

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Abstract:
Planktonic foraminiferal diversity, equitability and biostratigraphic analysis of samples from Ocean Drilling Program (ODP) Leg 122, Hole 762C show that in general, cool water conditions prevailed during the latest Campanian-Maastrichtian in the eastern Indian Ocean. This is indicated by planktonic foraminiferal assemblages characterized by low species diversity and equitability with abundant rugoglobigerinids and heterohelicids. Archaeoglobigerinids, globigerinelloids, hedbergellids, and long-ranging double-keeled globotruncanids are also present in varying abundance but single-keeled forms occur rarely and sporadically.
Identification of the stage and zonal boundaries for the studied geologic interval have been achieved through biostratigraphic analyses of closely spaced samples. Three planktonic foraminiferal biozones were identified, namely; in stratigraphic order, the Heterohelix rajagopalani, Contusotruncana contusa and Abathomphalus mayaroensis Zones.
In Hole 762C, a Transitional Realm with Austral influences is defined for the latest Campanian to Maastrichtian, as shown by the high relative abundance of fauna characteristic of Transitional and Austral Realms. Austral endemic species such as Archaeoglobigerina australis Huber and Hedbergella sliteri Huber were found in the samples studied but Globigerinelloides impensus Sliter andA rchaeoglobigerina mateola Huber are conspicuously absent. From the latest Campanian to middle Maastrichtian, cooler parts of the Transitional Realm prevailed. A slight warming trend is assumed towards the end of the middle Maastrichtian because the faunas contain more species indicative of warm water conditions. The late Maastrichtian also appears to have been warmer than the latest Campanian-middle Maastrichtian. This conclusion is based on the high diversity and equitability values and recognition of some thermophilic taxa. A Tethyan influence is inferred for the latest Maastrichtian on the basis of an increase of planktonic foraminiferal species diversity and occurrences of several keeled taxa.
Project(s):
Coverage:
Latitude: -19.887000 * Longitude: 112.254000
Date/Time Start: 1988-07-27T03:25:00 * Date/Time End: 1988-08-05T08:30:00
Minimum DEPTH, sediment/rock: 556.60 m * Maximum DEPTH, sediment/rock: 687.10 m
Event(s):
122-762C * Latitude: -19.887000 * Longitude: 112.254000 * Date/Time Start: 1988-07-27T03:25:00 * Date/Time End: 1988-08-05T08:30:00 * Elevation: -1371.0 m * Penetration: 940 m * Recovery: 534.54 m * Location: South Indian Ridge, South Indian Ocean * Campaign: Leg122 * Basis: Joides Resolution * Device: Drilling/drill rig (DRILL) * Comment: 91 core; 940 m cored; 0 m drilled; 56.9 % recovery
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethodComment
1Sample code/labelSample labelZepeda, Maybellyn AODP sample designation
2DEPTH, sediment/rockDepthmGeocode
3Foraminifera, planktic preservationForam plankt preservZepeda, Maybellyn AG = good, M = moderate
4Abathomphalus intermediusA. intermedius#Zepeda, Maybellyn ACounting >63 µm fraction
5Abathomphalus mayaroensisA. mayaroensis#Zepeda, Maybellyn ACounting >63 µm fraction
6Archaeoglobigerina australisA. australis#Zepeda, Maybellyn ACounting >63 µm fraction
7Archaeoglobigerina blowiA. blowi#Zepeda, Maybellyn ACounting >63 µm fraction
8Contusotruncana contusaC. contusa#Zepeda, Maybellyn ACounting >63 µm fraction
9Contusotruncana fornicataC. fornicata#Zepeda, Maybellyn ACounting >63 µm fraction
10Contusotruncana cf. fornicataC. cf. fornicata#Zepeda, Maybellyn ACounting >63 µm fraction
11Contusotruncana plummeraeC. plummerae#Zepeda, Maybellyn ACounting >63 µm fraction
12Contusotruncana walfischensisC. walfischensis#Zepeda, Maybellyn ACounting >63 µm fraction
13Contusotruncana cf. walfischensisC. cf. walfischensis#Zepeda, Maybellyn ACounting >63 µm fraction
14Globigerinelloides caseyiG. caseyi#Zepeda, Maybellyn ACounting >63 µm fraction
15Globigerinelloides multispinatusG. multispinatus#Zepeda, Maybellyn ACounting >63 µm fraction
16Globigerinelloides prairiehillensisG. prairiehillensis#Zepeda, Maybellyn ACounting >63 µm fraction
17Globigerinelloides subcarinatusG. subcarinatus#Zepeda, Maybellyn ACounting >63 µm fraction
18Globigerinelloides ultramicrusG. ultramicrus#Zepeda, Maybellyn ACounting >63 µm fraction
19Globotruncana aegyptiacaG. aegyptiaca#Zepeda, Maybellyn ACounting >63 µm fraction
20Globotruncana arcaG. arca#Zepeda, Maybellyn ACounting >63 µm fraction
21Globotruncana cf. arcaG. cf. arca#Zepeda, Maybellyn ACounting >63 µm fraction
22Globotruncana bulloidesG. bulloides#Zepeda, Maybellyn ACounting >63 µm fraction
23Globotruncana cf. bulloidesG. cf. bulloides#Zepeda, Maybellyn ACounting >63 µm fraction
24Globotruncana dupeubleiG. dupeublei#Zepeda, Maybellyn ACounting >63 µm fraction
25Globotruncana duwiG. duwi#Zepeda, Maybellyn ACounting >63 µm fraction
26Globotruncana falsostuartiG. falsostuarti#Zepeda, Maybellyn ACounting >63 µm fraction
27Globotruncana insignisG. insignis#Zepeda, Maybellyn ACounting >63 µm fraction
28Globotruncana linneianaG. linneiana#Zepeda, Maybellyn ACounting >63 µm fraction
29Globotruncana marieiG. mariei#Zepeda, Maybellyn ACounting >63 µm fraction
30Globotruncana orientalisG. orientalis#Zepeda, Maybellyn ACounting >63 µm fraction
31Globotruncana rosettaG. rosetta#Zepeda, Maybellyn ACounting >63 µm fraction
32Globotruncana rugosaG. rugosa#Zepeda, Maybellyn ACounting >63 µm fraction
33Globotruncana tricarinataG. tricarinata#Zepeda, Maybellyn ACounting >63 µm fraction
34Globotruncana trinidadensisG. trinidadensis#Zepeda, Maybellyn ACounting >63 µm fraction
35Globotruncana ventricosaG. ventricosa#Zepeda, Maybellyn ACounting >63 µm fraction
36Globotruncana cf. ventricosaG. cf. ventricosa#Zepeda, Maybellyn ACounting >63 µm fraction
37Globotruncanella citaeG. citae#Zepeda, Maybellyn ACounting >63 µm fraction
38Globotruncanella havanensisG. havanensis#Zepeda, Maybellyn ACounting >63 µm fraction
39Globotruncanella petaloideaG. petaloidea#Zepeda, Maybellyn ACounting >63 µm fraction
40Globotruncanita angulataG. angulata#Zepeda, Maybellyn ACounting >63 µm fraction
41Globotruncanita conicaG. conica#Zepeda, Maybellyn ACounting >63 µm fraction
42Globotruncanita pettersiG. pettersi#Zepeda, Maybellyn ACounting >63 µm fraction
43Globotruncanita stuartiG. stuarti#Zepeda, Maybellyn ACounting >63 µm fraction
44Globotruncanita stuartiformisG. stuartiformis#Zepeda, Maybellyn ACounting >63 µm fraction
45Gublerina acutaG. acuta#Zepeda, Maybellyn ACounting >63 µm fraction
46Gublerina cuvillieriG. cuvillieri#Zepeda, Maybellyn ACounting >63 µm fraction
47Gublerina robustaG. robusta#Zepeda, Maybellyn ACounting >63 µm fraction
48Guembelitria cretaceaG. cretacea#Zepeda, Maybellyn ACounting >63 µm fraction
49Hedbergella holmdelensisH. holmdelensis#Zepeda, Maybellyn ACounting >63 µm fraction
50Hedbergella monmouthensisH. monmouthensis#Zepeda, Maybellyn ACounting >63 µm fraction
51Hedbergella sliteriH. sliteri#Zepeda, Maybellyn ACounting >63 µm fraction
52Heterohelix globocarinataH. globocarinata#Zepeda, Maybellyn ACounting >63 µm fraction
53Heterohelix globosaH. globosa#Zepeda, Maybellyn ACounting >63 µm fraction
54Heterohelix navarroensisH. navarroensis#Zepeda, Maybellyn ACounting >63 µm fraction
55Heterohelix planataH. planata#Zepeda, Maybellyn ACounting >63 µm fraction
56Heterohelix rajagopalaniH. rajagopalani#Zepeda, Maybellyn ACounting >63 µm fraction
57Heterohelix punctulataH. punctulata#Zepeda, Maybellyn ACounting >63 µm fraction
58Heterohelix cf. rajagopalaniH. cf. rajagopalani#Zepeda, Maybellyn ACounting >63 µm fraction
59Heterohelix semicostataH. semicostata#Zepeda, Maybellyn ACounting >63 µm fraction
60Heterohelix striataH. striata#Zepeda, Maybellyn ACounting >63 µm fraction
61Laeviheterohelix dentataL. dentata#Zepeda, Maybellyn ACounting >63 µm fraction
62Laeviheterohelix glabransL. glabrans#Zepeda, Maybellyn ACounting >63 µm fraction
63Laeviheterohelix pulchraL. pulchra#Zepeda, Maybellyn ACounting >63 µm fraction
64Planoglobulina acervulinoidesP. acervulinoides#Zepeda, Maybellyn ACounting >63 µm fraction
65Planoglobulina carseyaeP. carseyae#Zepeda, Maybellyn ACounting >63 µm fraction
66Planoglobulina riograndensisP. riograndensis#Zepeda, Maybellyn ACounting >63 µm fraction
67Pseudoguembelina excolataP. excolata#Zepeda, Maybellyn ACounting >63 µm fraction
68Pseudoguembelina costulataP. costulata#Zepeda, Maybellyn ACounting >63 µm fraction
69Pseudoguembelina palpebraP. palpebra#Zepeda, Maybellyn ACounting >63 µm fraction
70Pseudotextularia deformisP. deformis#Zepeda, Maybellyn ACounting >63 µm fraction
71Pseudotextularia elegansP. elegans#Zepeda, Maybellyn ACounting >63 µm fraction
72Pseudotextularia intermediaP. intermedia#Zepeda, Maybellyn ACounting >63 µm fraction
73Pseudotextularia nuttalliP. nuttalli#Zepeda, Maybellyn ACounting >63 µm fraction
74Racemiguembelina fructicosaR. fructicosa#Zepeda, Maybellyn ACounting >63 µm fraction
75Rugoglobigerina hexacamerataR. hexacamerata#Zepeda, Maybellyn ACounting >63 µm fraction
76Rugoglobigerina macrocephalaR. macrocephala#Zepeda, Maybellyn ACounting >63 µm fraction
77Rugoglobigerina milamensisR. milamensis#Zepeda, Maybellyn ACounting >63 µm fraction
78Rugoglobigerina pennyiR. pennyi#Zepeda, Maybellyn ACounting >63 µm fraction
79Rugoglobigerina rugosaR. rugosa#Zepeda, Maybellyn ACounting >63 µm fraction
80Rugoglobigerina scottiR. scotti#Zepeda, Maybellyn ACounting >63 µm fraction
81Rugotruncana subcircumnodiferR. subcircumnodifer#Zepeda, Maybellyn ACounting >63 µm fraction
82Rugotruncana subpennyiR. subpennyi#Zepeda, Maybellyn ACounting >63 µm fraction
83Foraminifera, plankticForam plankt#Zepeda, Maybellyn ACounting >63 µm fraction
84Foraminifera, benthicForam bent#Zepeda, Maybellyn ACounting >63 µm fraction
85ForaminiferaForam#Zepeda, Maybellyn ACounting >63 µm fractiontotal
Size:
2940 data points

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