Results 11 to 20 of about 3,632 (206)

A Precambrian microcontinent in the Indian Ocean [PDF]

Nature Geoscience, 2013
Ridges of thick, raised crust on the Indian Ocean floor were thought to be mostly volcanic seamounts formed above the Reunion mantle plume. Dating of zircon minerals in Mauritian lavas, however, indicates that fragments of an ancient microcontinent may be preserved beneath the seamounts, contributing to the thickened crust.
Torsvik, Trond Helge; Amundsen, Hans; Hartz, Ebbe Hvidegård; Corfu, Fernando; Kusznir, Nick; Gaina, Carmen; Dubrovin, Pavel; Steinberger, Bernard; Ashwal, Lewis D.; Jamtveit, Bjørn.   +10 more
openaire   +5 more sources

Seismic Volcanostratigraphy: The Key to Resolving the Jan Mayen Microcontinent and Iceland Plateau Rift Evolution

Geochemistry, Geophysics, Geosystems, 2022
Volcanostratigraphic and igneous province mapping of the Jan Mayen microcontinent (JMMC) and Iceland Plateau Rift (IPR) region have provided new insight into the development of rift systems during breakup processes.
Anett Blischke, Bryndís Brandsdóttir, Martyn S. Stoker, Carmen Gaina, Ögmundur Erlendsson, Christian Tegner, Sæmundur A. Halldórsson, Helga M. Helgadóttir, Bjarni Gautason, Sverre Planke, Anthony A. P. Koppers, John R. Hopper   +11 more
doaj   +1 more source

Studying the Depth Structure of the Kyrgyz Tien Shan by Using the Seismic Tomography and Magnetotelluric Sounding Methods

Geosciences, 2021
This paper presents new results of detailed seismic tomography (ST) on the deep structure beneath the Middle Tien Shan to a depth of 60 km. For a better understanding of the detected heterogeneities, the obtained velocity models were compared with the ...
Irina Medved, Elena Bataleva, Michael Buslov   +2 more
doaj   +1 more source

Phanerozoic evolution of the North Tien Shan microcontinent [PDF]

, 2010
Batalev, Vladislav, Buslov, Mikhail, De Grave, Johan, Glorie, Stijn, Van den haute, Peter   +4 more
core   +2 more sources

Geodynamicsand metallogenyof the Keivy domain (Baltic Shield)

Vestnik MGTU, 2020
Geodynamic and petrogeochemical study of the Keivy domain in the Baltic Shield has shown that it was overlapped by surrounding microcontinents in the Archean. As a result, the Baltic Shield was subject to cratonization. Thus, the Keivy microcontinent can
Kozlov N. Е., Sorokhtin N. О., Martynov E. V. , Marchuk T. S.   +3 more
doaj   +1 more source

South Georgia microcontinent: Displaced fragment of the southernmost Andes

Earth-Science Reviews, 2021
Abstract The mountainous, glaciated island of South Georgia is the crest of one of the most isolated fragments of continental crust on Earth. It is located approximately 1700 km east of the southern termination of the Andean Cordillera of South America.
Dalziel, Ian W.D., Macdonald, David I.M., Stone, Philip, Storey, Bryan C.   +3 more
openaire   +2 more sources

Detecting a Sinistral Transpressional Deformation Belt in the Zagros

Geosciences, 2021
The oblique collision between the northeastern margin of the Arabian platform and the Iranian microcontinent has led to transpressional deformation in the Zagros orogenic belt in the central part of the Alpine–Himalayan orogenic belt.
Mohammad Ali Ghanbarian, Ali Yassaghi, Reza Derakhshani   +2 more
doaj   +1 more source

Petrology and Mineralogy of Metamorphic Rocks in The Pringsewu District, Lampung Province, Indonesia

JGEET: Journal of Geoscience, Engineering, Environment and Technology, 2023
The origin of metamorphic rock is greatly influenced by the temperature and pressure changes in every tectonic setting, especially in active subduction margins.
Happy Christin Natalia Sirait, Veni Dewinta   +1 more
doaj   +1 more source

Provenance Response to Rifting and Separation at the Jan Mayen Microcontinent Margin

Geosciences, 2022
The Eocene-Miocene successions recovered at DSDP sites on the Jan Mayen Ridge (NE Atlantic) and on the adjacent East Greenland margin provide a sedimentary record of the rifting and separation of the Jan Mayen Microcontinent from East Greenland.
Andrew Morton, David W. Jolley, Adam G. Szulc, Andrew G. Whitham, Dominic P. Strogen, C. Mark Fanning, Sidney R. Hemming   +6 more
doaj   +1 more source

Sedimentation record in the Konkan-Kerala Basin: implications for the evolution of the Western Ghats and the Western Indian passive margin [PDF]

, 2007
The Konkan and Kerala Basins constitute a major depocentre for sediment from the onshore hinterland of Western India and as such provide a valuable record of the timing and magnitude of Cenozoic denudation along the continental margin.
Allen P.A., Auden J.B., Balakrishnan T.S., Cox K.G., Drury S.A., Ghosh B.N., Gilchrist A.R., Gunnell Y., Gunnell Y., Gunnell Y., Gunnell Y., Hetenyi M., Joseph S., Kalaswad S., Kearey P., King L.C., King L.C., Krishnan M.S., Mathur R.B., McHargue T.R., Naini B.R., Nair K.M., Naqvi S.M., Ollier C.D., Ollier C.D., Pascoe E.H., Persano C., Radhakrishna B.P., Radhakrishna B.P., Raju D.S.N., Rao P.R., Rao S.V., Rao V.P., Schlich R., Singh N.K., Stephen J., Stuwe K., Summerfield M.A., Turcotte D.L., Vaidyanadhan R., Watts A.B., Widdowson M., Widdowson M., Widdowson M.   +43 more
core   +1 more source