Results 91 to 100 of about 855 (200)

Reconstructing paleosalinity from δ¹⁸O: Coupled model simulations of the Last Glacial Maximum, Last Interglacial and Late Holocene [PDF]

, 2016
Reconstructions of salinity are used to diagnose changes in the hydrological cycle and ocean circulation. A widely used method of determining past salinity uses oxygen isotope (δOw) residuals after the extraction of the global ice volume and temperature ...
Holloway, Max D., Singarayer, Joy S., Valdes, Paul J., Holloway, MD, Sime, Louise C., Valdes, PJ, Singarayer, JS, Tindall, JC, Tindall, Julia C., Sime, LC   +9 more
core   +1 more source

Oxygen isotopic composition of early Eocene fishapatite from hole 913 B, ODP Leg 151: An indicator of the early Norwegian-Greenland Sea paleosalinity [PDF]

, 1996
Fish-apatite (teeth and bone fragments) of early Eocene age from Ocean Drilling Program Hole 913B (Greenland Basin) was analyzed, in the absence of biogenic calcite, for stable isotopic (δ1 8θco,2~, δ13C) composition to determine paleosalinity ...
Andreasson, F., Spiegler, Dorothee, Schmitz, B.   +2 more
core  

Comparing thallium isotopes to paleosalinity and Mo-U isotope paleoredox proxies: A case study of the Upper Devonian Kettle Point Formation, Ontario [PDF]

, 2023
Black shale formations are utilised to reconstruct ancient global ocean redox conditions by analyzing and inferring their geochemical and isotopic compositions.
Bell, Natasha Celine
core  

Characteristics and the formation mechanism of the dolomite reservoirs for Lower Ordovician Majiagou Formation, central Ordos Basin, China

Frontiers in Earth Science
The distribution of anhydrite contributes to the formation of high-quality dolomite reservoirs. However, the lower part of the Lower Ordovician Majiagou Formation in the central Ordos Basin shows significant natural gas potential despite in anhydrite ...
Kun Tian, Jinsong Zhou, Xiao Yin, Chunqi Xue, Jun Cao, Ling Ma, Weibo Zhao   +6 more
doaj   +1 more source

Paleosalinity and dolomitization of a Lower Paleozoic carbonate sequence, Somerset and Prince of Wales Islands, Arctic Canada

, 1978
Trace element study of Lower Paleozoic carbonate formations on Somerset and Prince of Wales Islands (Arctic Canada) suggests the following interpretation: (1) Na contents of the formations studied reflect the paleosalinities of their depositional and ...
Brian Jones, Jean Lemieux, Martin R. Gibling, Jim Savelle, Ján Veizer   +4 more
core   +1 more source

Paleoenvironmental reconstruction and carbon and sulfur isotopes perturbation in black shales of the Paleocene Bolander member in the N’kapa Formation, Douala Sub-basin Cameroon

Geosystems and Geoenvironment
Black shales deposited across the Paleocene Bolander member of the N’kapa Formation are considered important source rock and shale gas reservoirs in the Douala sub-basin.
Ngong Roger Ngia, Elie Fosso Menkem, Alexandrine N’Nanga, Christopher Fuanya, Median Yongye   +4 more
doaj   +1 more source

Development characteristics of Carboniferous source rocks and enrichment mechanism of organic matter in southwestern Tarim Basin

Youqi dizhi yu caishoulu
The Kalashayi Formation is the main hydrocarbon-generating interval of the Carboniferous strata in the southwestern Tarim Basin. This set of source rocks has been proven to be the main contributor to oil and gas fields such as Kekeya and Bashituopu， but ...
DING Yong, PAN Quanyong, WANG Ting, LIU Sen, GUO Xiaowen, DONG Tian   +5 more
doaj   +1 more source

Paleosalinity and Paleoproductivity reconstruction based on Foraminifera Microfossil analysis: A case study of the Oyo Formation, Gunungkidul, Special Region of Yogyakarta, Indonesia

The Oyo Formation in the Southern Mountains of Java represents a neritic carbonate succession rich in foraminifera. This study aims to reconstruct the paleosalinity and paleoproductivity of the Oyo Formation and to evaluate their implications for ...
Esti Solehatun, Sapto Kis Daryono, Ihstar Andin Nur Fatiq, Daryono, Sapto Kis, Nur Fatiq, Ihstar Andin, Solehatun, Esti   +5 more
core   +2 more sources

Geochemical Characteristics of Carbonates and Indicative Significance of the Sedimentary Environment Based on Carbon–Oxygen Isotopes and Trace Elements: Case Study of the Lower Ordovician Qiulitage Formation in Keping Area, Tarim Basin (NW China)

Applied Sciences
The carbonate rock of the Qiulitage Formation is a significant stratum for oil and gas exploration in the Tarim Basin. To elucidate its environmental characteristics, we conducted tests and analyses of trace elements, carbon, and oxygen isotopes of the ...
Li-Xin Wang, Tian-Jia Liu, Hong-Ji Xiao, Hong-Xian Chu, Kun Yan, Qing-Tong Wang, Wen-Qin Jiang   +6 more
doaj   +1 more source

Geochemical Insights into the Paleodepositional Environment of the Garagu Formation, Gara Anticline, Kurdistan, Northern Iraq

ARO-The Scientific Journal of Koya University
The Garagu Formation is mostly composed of carbonate layers with iron-rich horizons in the middle part. The geochemical evidence for the paleodepositional environment of the Garagu Formation in the Kurdistan Region of Iraq’s Gara anticline has been ...
Tola A. Mirza, Ibrahim M.J. Mohialdeen, Shahra O. Abdalla   +2 more
doaj   +1 more source