Results 81 to 90 of about 5,088 (206)

Persistent Heterogeneities in the Oceanic Lithosphere Due To Differential Freezing Beneath Ridges

Geophysical Research Letters
Oceanic lithosphere, which forms two‐thirds of Earth's surface, is generated at mid‐ocean ridge spreading centers. Yet the internal structure of the lithosphere is not well characterized and often considered to be homogeneous relative to the structure of
Shi Joyce Sim, Ting‐Ying Yu, Chris Havlin   +2 more
doaj   +1 more source

That sinkin’ feeling: Environmentally induced distress on a disappearing island

Medical Anthropology Quarterly, EarlyView.
Abstract Residents of Tangier Island, Virginia, a subsiding island in the Chesapeake Bay, embody psychosocial dimensions of environmental change. Analysis of ethnographic data shows islanders’ experiences and articulations of anxiety, panic, and despair as “that sinkin’ feeling,” resulting from the stress of living with the long‐term threat of imminent
Jonna Yarrington
wiley   +1 more source

Early development of anoxia prior to the main euxinic phase of the Jenkyns Event on the margin of the Western Tethys (Sachrang Basin, Eastern Alps)

Sedimentology, EarlyView.
ABSTRACT Although the global expansion of oxygen‐depleted marine environments during the Early Toarcian Jenkyns Event (or Toarcian Oceanic Anoxic Event) is primarily inferred from successions in the NW European epicontinental basins, the timing of the expansion of anoxia in Tethyan basins, where hydrography potentially played a minor role, is poorly ...
Tamás Müller, Stefan Neumeister, Jan Schlögl, Emanuela Mattioli, Hans‐Jürgen Gawlick, Thomas J. Algeo, Adam Tomašových   +6 more
wiley   +1 more source

The geodynamics of plume-influenced mid-ocean ridges: insights from the Foundation Segment of the Pacific-Antarctic Ridge

Frontiers in Earth Science
The intersection of the Foundation Plume with the Pacific-Antarctic Ridge is a key location in global geodynamics where a mantle plume is approached by and interacting with a fast-spreading mid-ocean ridge.
Philipp A. Brandl, Christoph Beier, Karsten M. Haase, Felix S. Genske, Folkmar Hauff, Marcel Regelous, Colin W. Devey, Lars H. Rüpke   +7 more
doaj   +1 more source

Abiotic hydrogen (H₂) sources and sinks near the Mid-Ocean Ridge (MOR) with implications for the subseafloor biosphere. [PDF]

Proc Natl Acad Sci U S A, 2020
Worman SL, Pratson LF, Karson JA, Schlesinger WH.   +3 more
europepmc   +1 more source

Large-scale groundwater flow and sedimentary diagenesis in continental shelves influence marine chemical budgets

Nature Communications
The major ion chemistry of the ocean has been assumed to be controlled by river input, hydrothermal circulation at mid-ocean ridges, carbonate production, and low-temperature alteration of seafloor basalt, but marine chemical budgets remain difficult to ...
Alicia M. Wilson, Andrew Osborne, Scott M. White   +2 more
doaj   +1 more source

Solid Earth Carbon Degassing and Sequestration Since 1 Billion Years Ago

Geochemistry, Geophysics, Geosystems
Solid Earth CO2 outgassing, driven by plate tectonic processes, is a key driver of carbon cycle models. However, the magnitudes and variations in outgassing are poorly constrained in deep‐time.
R. Dietmar Müller, Adriana Dutkiewicz, Sabin Zahirovic, Andrew S. Merdith, Christopher R. Scotese, Benjamin J. W. Mills, Lauren Ilano, Ben Mather   +7 more
doaj   +1 more source

EARTHQUAKE SWARMS AS EVIDENCE OF VOLCANO-TECTONIC PROCESSES OF THE SLOWEST SPREADING GAKKEL RIDGE IN THE ARCTIC

Геодинамика и тектонофизика
Based on the data from the Arctic regional seismic stations, the article presents the results of studying the swarm seismicity of the Gakkel Mid-Ocean Ridge, located in the Arctic Ocean.
А. N. Morozov, N. V. Vaganova, Y. A. Mikhailova, Е. R. Morozova, I. V. Starkov   +4 more
doaj   +1 more source

MORPHOSTRUCTURE OF ATLANTIC’S BOTTOM AND MEDIUM ATLANTIC RIDGE

Геологія і корисні копалини Світового океану, 2019
The purpose of the study is to characterize the morphostructure and geology of Atlantic's bottom and the Mid Atlantic Ridge using generalized and new data. The basis is the bathymetric map of the Atlantic 1971, according to research data of the Institute
A.M. Zhirnov
doaj   +1 more source

The carbon isotopic signature of the upper mantle is heterogeneous

Communications Earth & Environment
Knowledge of the carbon isotopic (δ13C) signature of the mantle source region of mid–ocean ridge basalts, is key to understanding carbon cycling on a planetary scale.
Yves Moussallam, Kenneth T. Koga, Estelle F. Rose–Koga, Cyril Aubaud, Hyun Joo Lee, Guillaume Georgeais   +5 more
doaj   +1 more source