Results 61 to 70 of about 13,020 (209)

Morphology of Salina offshore (Southern Tyrrhenian Sea) [PDF]

open access: yes, 2015
In this paper, we present the first complete morphological map of the Salina offshore at a scale of 1:100,000. The submarine flanks of the Salina edifice extend down to −650 to −1300 m, are steep and characterized by an uneven morphology due to the ...
Bosman, A   +3 more
core   +2 more sources

Brief and intensive volcanic emissions from Ontong Java Nui heralded Oceanic Anoxic Event 1a

open access: yesCommunications Earth & Environment
The volcanic episode that formed Ontong Java Nui (OJN) in the western Pacific ~ 120 million-year-ago is thought to have triggered Oceanic Anoxic Event (OAE) 1a, yet the cause-effect relationship remains insufficiently understood. Here, we present a Pb-Os-
Hironao Matsumoto   +10 more
doaj   +1 more source

Water on Mars: Do submarine cyclic steps exist on the red planet?

open access: yesProgress in Earth and Planetary Science, 2018
Submarine cyclic steps have a significant impact on the evolution of the ocean floor on Earth. These upper-flow regime bedforms should be even more common in Martian reduced-gravity environments.
Svetlana Kostic, Isaac B. Smith
doaj   +1 more source

Hydrothermal Activity and Seismicity at Teahitia Seamount: Reactivation of the Society Islands Hotspot?

open access: yesFrontiers in Marine Science, 2020
Along mid-ocean ridges, submarine venting has been found at all spreading rates and in every ocean basin. By contrast, intraplate hydrothermal activity has only been reported from five locations, worldwide.
Christopher R. German   +10 more
doaj   +1 more source

Volcanism on the Pacific Ring of Fire: It's Going to Blow Up! (title provided or enhanced by cataloger) [PDF]

open access: yes
In this activity students familiarize themselves with some basic concepts of volcanology and investigate a portion of the Ring of Fire. They then research the answers to questions on the provided worksheet.
Mel Goodwin
core  

Drilling of shallow marine sulfide-sulfate mineralisation in south-eastern Tyrrhenian Sea, Italy; Seafloor sulfides, Tyrrhenian Sea, highsulfidation; hydrothermal systems, Palinuro [PDF]

open access: yes, 2009
Semi-massive to massive sulfides with abundant late native sulfur were drilled in a shallowwater hydrothermal system in an island arc volcanic setting at the Palinuro volcanic complex in the Tyrrhenian Sea, Italy.
Augustin, Nico   +9 more
core  

From the Arctic to the Tropics: The U.S. UNCLOS Bathymetric Mapping Program [PDF]

open access: yes, 2008
Since CHC2006, the University of New Hampshire’s Center for Coastal & Ocean Mapping/Joint Hydrographic Center has mapped with multibeam, the bathymetry of an additional ~220,000 km2 of seafloor in areas as diverse as the Arctic, the Northern Marianas of ...
Armstrong, Andy   +2 more
core   +1 more source

Cenozoic sedimentary and volcanic rocks of New Zealand: A reference volume of lithology, age and paleoenvironments with maps (PMAPs) and database. [PDF]

open access: yes, 2015
This volume presents descriptive geological data and text about each Cenozoic sedimentary and volcanic geological unit to formation and member level (in some cases) exposed on land in New Zealand, including their lithology, stratigraphic age and inferred
Kamp, Peter J.J.   +2 more
core   +1 more source

High-Resolution Topographic Analyses of Mounds in Southern Acidalia Planitia, Mars: Implications for Possible Mud Volcanism in Submarine and Subaerial Environments

open access: yesGeosciences, 2018
A northern ocean of Mars is still debated and, if it existed, it may have accompanied valley networks and/or outflow channels, which may have led to the emplacement of a large amount of water to the northern lowlands during the Noachian and/or Hesperian ...
Ryodo Hemmi, Hideaki Miyamoto
doaj   +1 more source

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