Results 71 to 80 of about 13,020 (209)

Volcanological constraints of Archaean tectonics [PDF]

Volcanological and trace element geochemical data can be integrated to place some constraints upon the size, character and evolutionary history of Archean volcanic plumbing, and hence indirectly, Archean tectonics.
Ayres, L. D., Thurston, P. C.
core   +1 more source

Geochemistry of upper Permian siliceous rocks from the Lower Yangtze region, southeastern China: implications for the origin of chert and Permian ocean chemistry

Petroleum Science, 2018
The Permian Chert Event is of great significance to understanding the geological evolution of the entire Permian; however, the origin of widespread chert formation is debated.
Zhi-Wei Liao, Wen-Xuan Hu, Xiu-Gen Fu, Zhong-Ya Hu   +3 more
doaj   +1 more source

Oxygen Isotope Variations of Basaltic Lavas and Upper Mantle Rocks [PDF]

, 2001
This chapter summarizes the oxygen isotope geochemistry of terrestrial basalts and their mantle sources, including the conceptual framework for interpreting such data and the phenomenology of known variations.
Eiler, John M.
core  

ACTIVE TECTONICS IN THE HELLENIC VOLCANIC ARC: THE KOLUMBO SUBMARINE VOLCANIC ZONE

Bulletin of the Geological Society of Greece, 2017
This paper studies the rupture system of the Anydhros Basin, northeast of Thera island, and its relationship to the submarine volcanic activity along the Kolumbo line. Anydhros Basin is a N45o E trending elongate basin bounded by the Ios-Fault-Zone (IFZ) towards NW and by the AnydhrosFault-Zone (AFZ) towards SE.
Sakellariou, D., Sigurdsson, H., Alexandri, M., Carey, S., Rousakis, G., Nomikou, P., Georgiou, P., Ballas, D.   +7 more
openaire   +3 more sources

Geomorphology and Age Constraints of Seamounts in the Cabo Verde Archipelago, and Their Relationship to Island Ages and Geodynamic Evolution

Geochemistry, Geophysics, Geosystems
The Cabo Verde Archipelago is related to a mantle plume located close to the rotational pole of the African Plate. It consists of islands and seamounts arranged in a horseshoe‐shaped pattern open to the west, thus forming two volcanic chains, each with a
Tom Kwasnitschka, Thor H. Hansteen, Ricardo S. Ramalho, Colin W. Devey, Andreas Klügel, Lisa K. Samrock, Jo‐Anne Wartho   +6 more
doaj   +1 more source

A Preliminary Hazard Assessment of Kolumbo Volcano (Santorini, Greece)

GeoHazards
Volcanic eruptions stand as destructive threats to adjacent communities, unleashing multiple hazards such as earthquakes, tsunamis, pyroclastic flows, and toxic gases.
Anna Katsigera, Paraskevi Nomikou, Kosmas Pavlopoulos   +2 more
doaj   +1 more source

Submarine volcanic microbiota record three volcano-induced tsunamis

Communications Earth & Environment
The precise determination of sediment provenance not only yields insights into past tsunami events but also offers a window into understanding the genesis of tsunamis in distinct environments, such as volcanic regions. Through meticulous analysis of core
Hoil Lee, Yire Choi, Ji Hye Han, Sang Deuk Lee, Sujeong Park, Jin-Hyuck Choi   +5 more
doaj   +1 more source

Seismic structure of the volcanic apron north of Gran Canaria [PDF]

, 1998
High-resolution reflection seismic profiles through the volcanic apron north of Gran Canaria collected during Meteor Cruise 24 were interpreted in the light of results from Leg 157 (Sites 953 and 954).
Funck, Thomas, Lykke-Andersen, H.
core   +1 more source

Submarine volcanic activity: Detection, monitoring, and interpretation

Eos, Transactions American Geophysical Union, 1989
Volcanic edifices on the ocean floor are much more numerous than suggested by available bathymetric charts [Batiza, 1982; Jordan et al., 1983]. More recently, Smith and Jordan [1987] have proposed an exponential model for the distribution of seamounts based on their dimensions.
openaire   +1 more source

POS511 Cruise Report, The Christiana-Santorini Volcanic Complex, 01.04.2017 (Heraklion) - 22.04.2017 (Heraklion) [PDF]

, 2017
R.V. POSEIDON Cruise No.: 511 Dates, Ports: 01.04.2017 (Heraklion) - 22.04.2017 (Heraklion) Research Subject: The Christiana-Santorini Volcanic ...
Cuno, Patrick, Geldmacher, Jörg, Hansteen, Thor, Ioannou, Theodora, Kosbue, Phillip, Kwasnitschka, Tom, Lampridou, Danai, Matthiessen, Torge, Meier, Arne, Nomikou, Paraskevi, Pieper, Martin, Suck, Inken   +11 more
core   +1 more source