Results 131 to 140 of about 7,350 (205)

Diverse morphologies found in living microbial mats and associated microbialites—A field report from the alkaline and hypersaline Nuoertu Lake, Badain Jaran Desert, N‐China

The Depositional Record, Volume 12, Issue 1, February 2026.
Diverse living microbial communities showing stacked mats and finger‐like branching examples that grow with the support of reed grass (phytomicrobialites) as well as aragonitic stromatolitic tufa have been rediscovered in the alkaline and hypersaline Lake Nuoertu in the Badain Jaran Desert N. China.
S. V. Hohl, M. Steiner, X.‐Y. Hu, H.‐Y. Liu   +3 more
wiley   +1 more source

Seasonally Variable Sediment Oxygen Demand Kinetics in Lake Erie's Central Basin

Journal of Geophysical Research: Biogeosciences, Volume 131, Issue 2, February 2026.
Abstract Sediment oxygen demand (SOD) rate measurements in Lake Erie and other lakes are complicated by the fact that SOD can show different degrees of dependence upon water temperature and dissolved oxygen (DO) concentration and different models have been used to describe this process. We incubated sediment cores from three locations within the basin,
Casey M. Godwin, Russ Miller, Mark D. Rowe, Craig A. Stow, Thomas H. Johengen   +4 more
wiley   +1 more source

Orbital Variability in Grazing Proportion: New Insights From Sedimentary Amino Acid δ15N Records of the Western Equatorial Pacific

AGU Advances, Volume 7, Issue 1, February 2026.
Abstract The carbon sequestration capacity of the biological carbon pump (BCP) is determined by surface ocean carbon fixation and the transportation of fixed carbon to the ocean interior, which is closely linked to the trophic structure of planktonic ecosystem.
Chen Li, Haowen Dang, Jinlong Du, Hongliang Li, Jingjing Zhang, Zhimin Jian   +5 more
wiley   +1 more source

Introduction

The Depositional Record, Volume 12, Issue 1, February 2026.
Lee R. Kump, Albert C. Hine, Miquela Ingalls   +2 more
wiley   +1 more source

Silicate and Carbonate Weathering Perturbation at the Eocene‐Oligocene Transition Recorded by Mg Isotopes

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 2, February 2026.
Abstract During the Eocene‐Oligocene Transition (ca. 34 Ma), the Earth underwent a dramatic decline in atmospheric CO2, global cooling, a deepening of the carbonate compensation depth (CCD), and the formation of a permanent ice sheet on Antarctica. The expansion of Antarctic glaciers eroded the underlying bedrock and increased the weathering flux to ...
Adam D. Sproson, Toshihiro Yoshimura, Shigeyuki Wakaki, Takahiro Aze, Yusuke Yokoyama, Tsuyoshi Ishikawa, Naohiko Ohkouchi   +6 more
wiley   +1 more source

Diagenetic and Hydrothermal Processes Produce Heavy Molybdenum Isotope Signatures in Pelagic Sediments of the North and South Pacific

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 2, February 2026.
Abstract Molybdenum isotopes (δ98Mo) have been used for more than two decades to investigate past‐ocean redox conditions due to the distinct behavior of this element in oxic and anoxic environments. The oxic sink is generally accepted to have a near‐constant δ98Mo value of −0.7‰, a value derived primarily from the δ98Mo signatures of Fe–Mn crusts and ...
P. L. Fraga‐Ferreira, C. Siebert, M. Frank, F. Scholz   +3 more
wiley   +1 more source

The Influence of Elevated Temperature on Time‐Dependent Compaction Creep in Bleursville Sandstone

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 2, February 2026.
Abstract The inelastic compaction of sandstone in the upper crust typically occurs at depths where temperatures range from approximately 50°C $50{}^{\circ}\mathrm{C}$ to 150°C $150{}^{\circ}\mathrm{C}$. Previous experimental studies have shown that even this modest temperature increase can reduce the yield stress required to initiate inelastic ...
Mark Jefferd, Nicolas Brantut, Thomas M. Mitchell, Philip G. Meredith   +3 more
wiley   +1 more source

Localized and Transient Oxygenation of Shallow Oceans of Southwestern Laurentia at the Ediacaran-Cambrian Boundary. [PDF]

Geobiology
Chanchai W, Nelson LL, Smith EF, Hardisty DS, Lonsdale MC, Burke JE, Lau KV.   +6 more
europepmc   +1 more source

Sedimentary Architecture of the Stimson Formation at the Naukluft Plateau, Gale Crater, Mars

Journal of Geophysical Research: Planets, Volume 131, Issue 2, February 2026.
Abstract Sedimentary texture, facies, and architecture can be used to reconstruct the palaeoenvironment under which sediments accumulate. On Mars, palaeoenvironmental reconstructions are used to understand ancient Martian atmospheric circulation, surface sedimentary processes, and the presence of water, to provide insight into ancient habitability and ...
Amy E. Dean, Steven G. Banham, Gerhard Paar, Sanjeev Gupta, Joel M. Davis, Ashwin R. Vasavada   +5 more
wiley   +1 more source

Enrichment Characteristics and Genetic Analysis of Rare Earth Elements in the Lower Longtan Formation Coal of Qianbei Coalfield, Guizhou Province. [PDF]

ACS Omega
Li Y, Zhu Y, Yang Z, Wang F, Ding Y, Li B, Yang Y, Hu C.   +7 more
europepmc   +1 more source