Results 111 to 120 of about 1,954 (223)

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

Geochemistry of surface sediment cores

, 2001
High concentrations of barium have been found in sediments deposited on the Chilean continental slope after glacial Termination I. When compared to independent proxies of paleoproductivity, the pattern of biogenic barium accumulation does not match the ...
Klump, Jens, Wefer, Gerold, Hebbeln, Dierk   +2 more
core   +1 more source

Regional differences in pelagic productivity in the late Eocene to early Oligocene a comparison of southern high latitudes and lower latitudes

, 2004
Paleoproductivity patterns at the EoceneOligocene boundary in southern high latitudes and in the equatorial oceans were synthesized from the literature.
Schumacher, Stefanie, Lazarus, D.
core   +1 more source

The Lower Cambrian Xiaoerbulake Formation in the Tarim Basin as a potential carbonate source rock

Energy Geoscience
The oil and gas exploration of the Middle and Lower Cambrian in the Tarim Basin reveals widely distributed source rocks with the Yuertusi Formation being recognized as high-quality source rocks that are distributed in a rather small range.
Miaoqing Miao, Zhichao Sun, Zongan Xue, Miao Miao, Kunpeng Jiang, Xuefeng Zhang, Zhongkai Bai, Xiuxiang Lyu, Xingui Zhou, Yongjin Gao, Miao Han, Youxing Yang   +11 more
doaj   +1 more source

Changes in Caribbean paleoproductivity, diversity and benthic foraminiferal test size caused by the Neogene closing of the tropical Atlantic-Pacific ocean gateway

, 2006
The purpose of this study was to test 3 hypotheses: (a) that late Miocene to early Pliocene constriction and complete closure of the Central American Seaway (CAS), connecting tropical Atlantic and East Equatorial Pacific (EEP) oceans, caused decreased ...
Jain, Sreepat
core  

Global assessment of marine paleoproductivity proxies

, 2019
La productivitat primària (PP) marina és un procés clau en el cicle global del carboni marí i, per tant, en el clima del nostre planeta. L’obtenció d’informació quantitativa de PP en el passat es basa en models biogeoquímics, ja que les proxies de paleoproductivitat actuals són qualitatives.
openaire   +1 more source

Paleoproductivity and erosional indicators of two Vermont lake pairs

The sediment cores and water quality of two lake pairs in Vermont were sampled and analyzed to assess paleoproductivity changes over time since the settlement of Europeans, focusing on the rate of increase in productivity between mesotrophic and ...
Smith, Olivia
core   +1 more source

Geochemical Characteristics of the Middle Jurassic Coal-Bearing Mudstones in the Dameigou Area (Qaidam Basin, NW China): Implications for Paleoclimate, Paleoenvironment, and Organic Matter Accumulation. [PDF]

ACS Omega, 2023
Zhou K, Sun J, Yang M, Zhang S, Wang W, Gao R, Zhang P, Wang W, Liu H, Shao L, Lu J.   +10 more
europepmc   +1 more source

Paleoenvironment Evolutionary Characteristics of Niutitang Shale in Western Hubei, Middle Yangtze, China. [PDF]

ACS Omega, 2022
Xu L, Huang S, Liu Z, Zhang Y, Wen Y, Zhou X, Chen W, Ren Z, Wen J.   +8 more
europepmc   +1 more source

Hydrocarbon Generation Potential, Paleoenvironmental Conditions, and Organic Matter Enrichment of the Fengcheng Formation Black Shales in the Hala'alat Mountain, NW Junggar Basin: Chemostratigraphic Insights from Well HQ‑6. [PDF]

ACS Omega
Li Z, Zhang S, Zhou J, Song M, Bai J, Zhang L, Jia Y, Liu R, Guo H, Hu'anishen J, Wei Y.   +10 more
europepmc   +1 more source