Results 11 to 20 of about 1,954 (223)

Paleoproductivity drivers in the Banggai Waters, Sulawesi, Indonesia: Insights from elemental analysis of marine surface sediment [PDF]

BIO Web of Conferences
Marine productivity, a pivotal factor in marine ecosystems and global carbon cycling, is influenced by various factors including upwelling and terrigenous nutrient influx.
Wiguna Taufan, Yuwono Fareza Sasongko, Zuraida Rina, Atmadipoera Agus, Vogel Hendrik, Damanik Adrianus, Tournier Nicolas, Cahyarini Sri Yudawati   +7 more
doaj   +2 more sources

PALEOSALINITY AND PALEOPRODUCTIVITY OF THE SENTOLO FORMATION, SOUTH SERAYU BASIN

Journal of Earth and Marine Technology (JEMT)
The Sentolo Formation is one of the stratigraphic units in the Kulon Progo Mountains located in the South Serayu Basin [1] that characterized by a relatively extensive distribution of limestone.
Esti Solehatun, Sapto Kis Daryono, Ihstar Andin Nur Fatiq, Fatiq, Ihstar Andin Nur, Daryono, Sapto Kis, Solehatun, Esti   +5 more
core   +2 more sources

The Recovery of the Shuram Anomaly and Paleoproductivity Balance [PDF]

Goldschmidt Abstracts, 2020
<p>The global Shuram anomaly records the longest and most negative carbonate carbon isotopic excursion in Earth history. It took place during the late Ediacaran (c. 570 – c. 551 Ma) with δ<sup>13</sup>C<sub>carb</sub>values down to &#8722 ...
Fuencisla Cañadas Blasco, Dominic Papineau, Melanie J. Leng, Graham Shields   +3 more
openaire   +2 more sources

Extraordinarily High Organic Matter Enrichment in Upper Permian Wujiaping Formation in the Kaijiang-Liangping Trough, Sichuan Basin

Energies, 2022
The study of extraordinarily high organic matter content (EHOMC) is beneficial to promote the fine evaluation of shale oil and gas, but so far, there have been few studies on its mechanism.
Yao Du, Xingzhi Wang, Ruifeng Tang, Yiqing Zhu, Cong Yang, Hongfei Zhou, Qian Pang   +6 more
doaj   +1 more source

Geochemical characteristics and organic matter accumulation of Late Ordovician shale in the Upper Yangtze Platform, South China

Energy Reports, 2021
The Ordovician shale (Wufeng Formation) in the Upper Yangtze Platform is now considered a successful development interval, independent of the Longmaxi Formation.
Zhaodong Xi, Shuheng Tang
doaj   +1 more source

Hyperspectral Core-Logging for Past Primary Productivity Assessment

Quaternary, 2022
Past primary productivity is tracked in lake sediments to reconstruct environmental changes. However, the resolution of the routinely used destructive techniques is not suitable for the analysis of a large number of samples due to cost.
Antonin Van Exem, Maxime Debret, Yoann Copard, Kévin Jacq, Charles Verpoorter, Stéphane Marcotte, Benoit Laignel, Boris Vannière   +7 more
doaj   +1 more source

Marine Paleoproductivity From the Last Glacial Maximum to the Holocene in the Southwestern Atlantic: A Coccolithophore Assemblage and Geochemical Proxy Perspective

Frontiers in Earth Science, 2022
In this study, we associated the variations in coccolithophore assemblages with the variability in major elements (Fe, Ca, and Ti) from the continental slope of the western South Atlantic by investigating two marine sediment cores (GL-824 and GL-1109) to
Guilherme A. Pedrão, Marcus V. Hirama, Mariana O. Tomazella, Ana Luiza S. Albuquerque, Cristiano M. Chiessi, Karen B. Costa, Felipe A. L. Toledo   +6 more
doaj   +1 more source

Inorganic geochemistry and petroleum source evaluation of organic black shale in the Mamfe Basin (West Africa)

Solid Earth Sciences, 2019
The shales of the Mamfe basin, West Africa, were studied using inorganic geochemical analysis to investigate the origin of the organic matter, environment of its deposition, paleoproductivity and organic matter preservation, organic matter maturity and ...
Bokanda Ekoko Eric, Ekomane Emile, Njilah Isaac Konfor, Philip Fralick, Bisse Salomon Betrant, Tata Cathryn Ntoboh   +5 more
doaj   +1 more source

Comparing Maize Paleoproduction Models with Experimental Data [PDF]

Journal of Ethnobiology, 2017
In agrarian societies, such as the ancestral Pueblo of the Four Corners region of the US Southwest (c. AD 600–1300), the resilience of crops in the face of climate challenges was of paramount concern. Consequently, students of these societies have invested much effort in modeling the response of traditional crops to ancient weather patterns.
R. Kyle Bocinsky, Mark D. Varien
openaire   +1 more source

Opal studied as a marker of paleoproductivity

Eos, Transactions American Geophysical Union, 1996
Biogenic silica, better known as opal, is one of the three biogenic components of pelagic sediments, along with carbonate and organic matter, and it is a powerful tool for understanding the carbon cycle of the present and past. Opal is formed in surface waters during the photosynthesis of siliceous phytoplankton such as diatoms.
Olivier Ragueneau, Aude Leynaert, Paul Tréguer, David J. Demaster, Robert F. Anderson   +4 more
openaire   +1 more source