Hydrogen and oxygen isotope composition of selected Cretaceous and Paleogene/Neogene kaolins from Nigeria: Paleoclimatic inferences

被引：7

作者：

Oyebanjo, Olaonipekun ^{[1
]}

Ekosse, Georges-Ivo ^{[2
]}

Odiyo, John ^{[1
]}

机构：

[1] Univ Venda, Sch Environm Sci, P Bag X5050, ZA-0950 Thohoyandou, South Africa

[2] Univ Venda, Directorate Res & Innovat, P Bag X5050, ZA-0950 Thohoyandou, South Africa

来源：

APPLIED CLAY SCIENCE | 2018年 / 162卷

关键词：

Kaolin; Stable isotopes; Sedimentary; Paleoclimate; CLAY-MINERALS; LOW-TEMPERATURE; DEPOSITS; GEOCHEMISTRY; SURFACE; CRYSTALLINITY; DELTA-O-18; EXCHANGE; AFRICA; ORIGIN;

D O I：

10.1016/j.clay.2018.06.034

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The < 2 mu m fractions of Cretaceous and Paleogene/Neogene kaolins from Eastern Dahomey and Niger Delta Basins, Nigeria were selected. Oxygen and hydrogen stable isotopic kaolinite geochemistry were used to estimate the paleoclimatic conditions under which they were formed. Nine (9) samples comprising of five (5) Cretaceous and four (4) Paleogene/Neogene kaolins, respectively, were collected. The delta O-18(19.1 to 21.6 parts per thousand) and delta D (-66 to -49 parts per thousand) values for the Cretaceous - Paleogene/Neogene kaolinites suggest equilibration with meteoric waters which support a weathering origin before its sedimentation. The calculated paleotemperature range from 17.0 and 32.2 degrees C are characteristic of tropical climate. In addition, kaolinisation temperatures during the formation of the Cretaceous kaolins (30.7 degrees C) were warmer than those for the Paleogene/Neogene kaolins (20.5 degrees C) based on their respective average paleotemperatures. The isotopic composition of the paleometeoric water in equilibrium with the kaolinites from Cretaceous kaolins were enriched relative to the kaolinites from the Paleogene/Neogene kaolins.

引用

页码：375 / 381

页数：7

共 26 条

[21] Oxygen, Hydrogen, Boron and Lithium Isotope Data of a Natural Spring Water with an Extreme Composition: A Fluid from the Dehydrating Slab?
Tiziano Boschetti
Lorenzo Toscani
Paola Iacumin
Enricomaria Selmo
Aquatic Geochemistry, 2017, 23 : 299 - 313
[22] Thermal evolution of Cretaceous Tethyan marine waters inferred from oxygen isotope composition of fish tooth enamels -: art. no. 1029
Pucéat, E
Lécuyer, C
Sheppard, SMF
Dromart, G
Reboulet, S
Grandjean, P
PALEOCEANOGRAPHY, 2003, 18 (02):
[23] Oxygen isotope composition of teeth suggests endothermy and possible migration in some Late Cretaceous shark taxa from the Gulf Coastal Plain, USA
Comans, Chelsea M.
Tobin, Thomas S.
Totten, Rebecca L.
PALEOBIOLOGY, 2024, 50 (04) : 648 - 660
[24] MICROSTRUCTURAL PRESERVATION AND THE EFFECTS OF DIAGENESIS ON THE CARBON AND OXYGEN ISOTOPE COMPOSITION OF LATE CRETACEOUS ARAGONITIC MOLLUSKS FROM THE GULF COASTAL PLAIN AND THE WESTERN INTERIOR SEAWAY
Knoll, Katja
Landman, Neil H.
Cochran, J. Kirk
Macleod, Kenneth G.
Sessa, Jocelyn A.
AMERICAN JOURNAL OF SCIENCE, 2016, 316 (07) : 591 - 613
[25] OXYGEN-ISOTOPE AND HYDROGEN-ISOTOPE COMPOSITION OF SOME BASALTS FROM DEEP-SEA DRILLING PROJECT HOLE-504B, COSTA-RICA RIFT, LEG-69 AND LEG-70
BARRETT, TJ
FRIEDRICHSEN, H
INITIAL REPORTS OF THE DEEP SEA DRILLING PROJECT, 1983, 69 (MAY): : 637 - 642
[26] GEOCHEMISTRY, CARBON AND OXYGEN STABLE ISOTOPE COMPOSITION, AND DIAGENETIC TEXTURAL FEATURES OF LOWER CRETACEOUS PELAGIC CYCLIC SEDIMENTS FROM THE WESTERN NORTH-ATLANTIC, DEEP-SEA DRILLING PROJECT HOLE-603B
BALTUCK, M
INITIAL REPORTS OF THE DEEP SEA DRILLING PROJECT, 1987, 93 : 989 - 995

← 1 2 3 →