Results 71 to 80 of about 4,534 (235)

Truncated drumlins and their implication for past sea level reconstructions

Boreas, EarlyView.
Coastal erosion of glacigenic sediments, particularly in the form of retreating drumlin bluffs, is a key process in paraglacial landscape evolution during periods of relative sea‐level (RSL) rise. As marine transgression reworks formerly subaerial glacial terrains, drumlins act as discrete sediment sources generating characteristic erosional and ...
Riccardo Arosio, Andrew Finlayson, Guillaume Michel, Dayton Dove   +3 more
wiley   +1 more source

Depositional processes of varved sediments from proglacial Lago Frías since 1800 CE (North Patagonian Andes, Argentina)

Boreas, EarlyView.
The glacierized Valle Frías in Northern Patagonia is one of the best‐studied valleys in South America and includes varved sediments from Lago Frías. We complement this lacustrine record with a high‐resolution documentation of varve counts and their composition.
Bernd Zolitschka, Philipp Böning, A. Catalina Gebhardt, M. Alicia Irurzun, Wojciech Tylmann, Christoph Vogt, Claudia S. G. Gogorza   +6 more
wiley   +1 more source

Growth and Chemical Evolution of the Kohistan Arc Crust, Northern Pakistan, Western Himalayas

Geochemistry, Geophysics, Geosystems
Fossil arcs which expose the middle‐lower crust have the potential to shed light on active arc processes because magmatic rocks from the entire history of the arc can be examined.
Paul Sotiriou, Karsten M. Haase, Marcel Regelous   +2 more
doaj   +1 more source

Increased metamorphic conditions in the lower crust during oceanic transform fault evolution [PDF]

Solid Earth
Oceanic transform faults connect the segments of active spreading ridges that slide past each other. In a classical view, transform faults are considered conservative, where no material is added or destroyed.
P. Haas, P. Haas, M. F. H. Thomas, C. Heine, J. Ebbing, A. Seregin, J. van Itterbeeck   +6 more
doaj   +1 more source

Topology‐based Visual Analysis of Hydrothermal Plumes

Computer Graphics Forum, EarlyView.
Abstract Hydrothermal plumes are turbulent structures of intense heat and mineral smoke that rise and disperse into the deep ocean. Existing models generally characterize these systems as a single axisymmetric plume originating from a point source. However, this assumption breaks down in weakly venting, spatially distributed systems, where low‐flux ...
Adhitya Kamakshidasan, Tushar Jain, Karen Bemis, Valerio Pascucci   +3 more
wiley   +1 more source

EARTH CRUST IN OCEANS AND STRIP ANOMALIES OF MAGNETIC FIELD

Геологія і корисні копалини Світового океану, 2019
Examples of the isolation and interpretation of the strip anomalies of the magnetic field of the oceans are considered. Data were used on the eastern edge of the Pacific Ocean over most of the western coast of North America and on the Knipovich Ridge at ...
V.V. Gordienko
doaj   +1 more source

Mafic High‐Pressure Rocks Are Preferentially Exhumed From Warm Subduction Settings

Geochemistry, Geophysics, Geosystems, 2018
The oceanic crust that enters a subduction zone is generally recycled to great depth. In rare and punctuated episodes, however, blueschists and eclogites derived from subducted oceanic crust are exhumed.
Peter E. vanKeken, Ikuko Wada, Geoffrey A. Abers, Bradley R. Hacker, Kelin Wang   +4 more
doaj   +1 more source

Evaluating the protection status and exposure to warming of Caribbean reefs with high functional potential

Conservation Biology, EarlyView.
Abstract Over the past decades, climate change has emerged as a major threat to global biodiversity, negatively affecting the integrity and functioning of ecosystems and the benefits they provide to people. To mitigate these impacts, it is essential to identify climate refugia that support the persistence of the structure and function of reef ...
Sara M. Melo‐Merino, Andrés Lira‐Noriega, Enrique Martínez‐Meyer, Héctor Reyes‐Bonilla, Lorenzo Álvarez‐Filip   +4 more
wiley   +1 more source

Mechanism of crustal extension in the Laxmi Basin, Arabian Sea

Geodesy and Geodynamics, 2015
Continental rifting and magmatism has been extensively studied worldwide as it is believed that continental rifting, break up of continents and associated magmatism lead to genesis of new oceanic crust.
Anju Pandey, Dhananjai K Pandey
doaj   +1 more source

Constitution of Oceanic Crust and Ocean Ridge Magmatism

Journal of Geography (Chigaku Zasshi), 2003
Volumetrically, magmatism at spreading axes occupies more than 60% of present day volcanism, and oceanic crust generated there covers more than two thirds of earth surface. Therefore, studies of the oceanic crust and magmatism at spreading axes yield significant insights to understanding earth evolution. Recent studies on oceanic crust through drilling,
MIYASHITA, Sumio, MAEDA, Jin-ichiro
openaire   +2 more sources