Results 91 to 100 of about 1,954 (223)

High-resolution carbon and oxygen isotope records in the Chang 7 organic-rich shale of the Yanchang formation, Ordos Basin, China and their geological significance

Frontiers in Earth Science
The Late Triassic Chang 7 Member lacustrine organic-rich shale in the Ordos Basin is the most significant source rock for the Mesozoic oil system in the basin.
Haowen Deng
doaj   +1 more source

Phytoplankton Dynamics and Environmental Variability in the Eastern Equatorial Pacific Over Glacial‐Interglacial Timescales

Paleoceanography and Paleoclimatology, Volume 40, Issue 4, April 2025.
Abstract The Eastern Equatorial Pacific serves as a critical region for understanding the interplay between phytoplankton dynamics and global carbon cycling over glacial‐interglacial timescales. This study investigates the calcareous nannofossils from sediment core MV1014‐02‐17JC (17JC) and previously published diatom assemblage data from core MD02 ...
John A. Sarao Jr., Denise K. Kulhanek
wiley   +1 more source

Astronomically-paced changes in paleoproductivity, winnowing, and mineral flux over Broken Ridge (Indian Ocean) since the Early Miocene

, 2023
<p>This R scripts generate the figure 1-8 of the manuscript published by Lyu et al., Astronomically-paced changes in paleoproductivity, winnowing, and mineral flux over Broken Ridge (Indian Ocean) since the Early Miocene, <i>Paleoceanography ...
Christensen, Beth, Auer, Gerald, Bialik, Or M., Lyu, Jing, Yamaoka, Ryo, De Vleeschouwer, David   +5 more
core   +1 more source

(Appendix A) Stable carbon and oxygen isotopes and paleoproductivity reconstructions for the last 550 kyr of ODP Hole 130-807A from the Ontong Java Plateau, Pacific Ocean

, 2007
(Appendix A) Stable carbon and oxygen isotopes and paleoproductivity reconstructions for the last 550 kyr of ODP Hole 130-807A from the Ontong Java Plateau, Pacific ...
Shiying Zhang (2813257), Pinxian Wang (6961232), Jiangyong Zhang (7907336), Zhang, Shiying, Qianyu Li (2844152), Xinrong Cheng (6968561), Zhang, Jiangyong, Wang, Pinxian, Li, Qianyu, Jin, Haiyan, Cheng, Xinrong, Haiyan Jin (1554490)   +11 more
core   +1 more source

Sedimentary genesis of the lower Triassic Dongping Mn deposit in South China: insights from low organic matter enrichment

Frontiers in Earth Science
The genetic mechanism of the Lower Triassic Dongping carbonate-hosted Mn deposit in South China remains debated, particularly regarding depositional redox conditions and the role of organic matter in Mn carbonate formation.
Peng Long, Peng Long, Tao Long, Rong-Zhi Li, Da-Qing Ding, Xin-Hong Jiang, Yi Zhang, Ling-Nan Zhao, Qin Huang, Sha Jiang, Sha Jiang, Chengying Xie   +11 more
doaj   +1 more source

Paleoenvironmental characteristics of continental shale and its significance to organic matter enrichment: Taking the fifth member of Xujiahe Formation in Tianfu area of Sichuan Basin as an example

Open Geosciences
Lake-phase organic-rich shales are widely developed in the fifth member (Xu5 Member) of the Triassic Xujiahe Formation in the Sichuan Basin. However, due to the lack of understanding of the paleoclimate and paleoenvironment, the mechanism of organic ...
Yang Jian, Jiang Yuqiang, Chen Weihua, Pan Hui, Yang Xing, Li Miao, Liu Tao, Wang Zhanlei, Gu Yifan   +8 more
doaj   +1 more source

Characteristics of paleoenvironment of Paleogene Wenchang Formation in Lufeng 15 Sub-sag, Pearl River Mouth Basin and its controlling effect on source rocks

Frontiers in Earth Science
The Pearl River Mouth Basin is a major hydrocarbon province offshore China, where the lacustrine mudstones of the Paleogene Wenchang Formation serve as the main hydrocarbon source rock.
Yangdi Zheng, Yangdi Zheng, Zhangbo Xiao, Zhangbo Xiao, Hongbo Li, Hongbo Li, Yu Sun, Yu Sun, Xingye Yang, Xingye Yang   +9 more
doaj   +1 more source

Biogenic barium flux in the eastern equatorial Pacific Ocean

, 2020
We present the first regional-scale records of biogenic Barium (xsBa) fluxes in the Panama basin of the eastern-equatorial margin of the Pacific Ocean in order to assess xsBa as a paleoproductivity proxy.
Lyle, Mitchell W, Singh, Ajay Kumar, Marcantonio, Franco   +2 more
core   +1 more source

Petrological and Geochemical Characteristics of the Lower Cambrian Shuijingtuo Formation in the Middle Yangtze Block, South China: Implications for Organic Matter Accumulation on Carbonate Platform

Journal of Marine Science and Engineering
Understanding the development characteristics and controlling factors of organic-rich shales in carbonate platform settings is essential for predicting their distribution and assessing their natural gas exploration potential.
Baomin Zhang, Quansheng Cai, Guotao Zhang, Oumar Ibrahima Kane, Lin Chen, An Liu, Peng Zhou, Ruyue Wang   +7 more
doaj   +1 more source

Biogenic barium fluxes to the deep sea: Implications for paleoproductivity reconstruction

, 1995
Dymond et al. (1992) have recently proposed an algorithm to reconstruct paleoproductivity from biogenic Ba (bio‐Ba) accumulation rates in sediments.
Francois, Roger, Manganini, Steven J., Honjo, Susumu, Roger Francois, Susumu Honjo, Steven J. Manganini, Ravizza, Gregory E., Gregory E. Ravizza   +7 more
core   +1 more source