Results 11 to 20 of about 3,823,388 (289)

Geology and petrology of Tertiary volcanic rocks of Sarbisheh perlite mine area (eastern Iran) and industrial applications

open access: yesJournal of Economic Geology, 2012
The study area is located at northwest of Sarbisheh in South Khorasan province and eastern border of Lut block. In this area, Tertiary (Eocene-Oligocene to Pliocene) volcanic rocks consisting of basaltic andesite, dacite, rhyodacite, vitreous rhyolite ...
Seayad Sayid Mohammadi
doaj   +3 more sources

AN ACTIVE NEOPROTEROZOIC CONTINENTAL MARGIN OF THE ZAVKHAN MICROCONTINENT (MONGOLIA): ISOTOPIC-GEOCHRONOLOGICAL EVIDENCE

open access: yesГеодинамика и тектонофизика, 2022
There have been presented the results of the study of a thick (no less than 2–3 km), extended (for more than 200 km) volcanogenic formation (Tsetsen-Uul or Yargait) in the south of the Zavkhan terrane of the Central Asian fold belt.
S. I. Shkolnik   +2 more
doaj   +1 more source

Coupling Between Exhumation and Subduction: A Case Study From the Southern Great Xing'an Range, NE Asia

open access: yesGeophysical Research Letters, 2023
The link between subduction and continental exhumation is explored using high‐resolution thermal histories from southern Great Xing'an Range (GXR), NE Asia and integrated with a regional low‐temperature thermochronology data synthesis from the NE Asian ...
Didi Wu   +3 more
doaj   +1 more source

Structure of the lithosphere and conditions of formation of the Chagos-Laccadive Ridge (density and physical modeling)

open access: yesВестник Камчатской региональной ассоциации "Учебно-научный центр". Серия: Науки о Земле, 2020
The Chagos-Laccadiv Range is a linear-elongated structure adjacent to the passive margin of western India. The ridge consists of three segments: northern — Lakkadiv ridge, central — Maldives ridge and southern — bank (archipelago) Chagos.
Шайхуллина А.А.   +4 more
doaj   +1 more source

Escape of methane gas from the seabed along the West Spitsbergen continental margin [PDF]

open access: yes, 2009
More than 250 plumes of gas bubbles have been discovered emanating from the seabed of the West Spitsbergen continental margin, in a depth range of 150-400 m, at and above the present upper limit of the gas hydrate stability zone (GHSZ).
Nisbet, Euan G.   +66 more
core   +1 more source

The geochemical characteristics of Cretaceous volcanics in southern Hainan Island and implications for tectonic evolution in the South China Sea

open access: yesFrontiers in Earth Science, 2023
The southeastern Eurasian plate, where the South China Sea (SCS) is located, lies in a complex tectonic setting between the Pacific and Tethys tectonic belts.
Yang Liu   +3 more
doaj   +1 more source

Mantle Structure and Flow Across the Continent‐Ocean Transition of the Eastern North American Margin: Anisotropic S‐Wave Tomography

open access: yesGeochemistry, Geophysics, Geosystems, 2021
Little has been seismically imaged through the lithosphere and mantle at rifted margins across the continent‐ocean transition. A 2014–2015 community seismic experiment deployed broadband seismic instruments across the shoreline of the eastern North ...
Brennan R. Brunsvik   +2 more
doaj   +1 more source

Late Miocene to early Pliocene stratigraphic record in northern Taranaki Basin: Condensed sedimentation ahead of Northern Graben extension and progradation of the modern continental margin [PDF]

open access: yes, 2004
The middle Pliocene-Pleistocene progradation of the Giant Foresets Formation in Taranaki Basin built up the modern continental margin offshore from western North Island.
Kamp, Peter J.J.   +3 more
core   +1 more source

Present-day stress orientations and tectonic provinces of the NW Borneo collisional margin [PDF]

open access: yes, 2010
Extent: 15p.Borehole failure observed on image and dipmeter logs from 55 petroleum wells across the NW Borneo collisional margin were used to determine maximum horizontal stress (σH) orientations; combined with seismic and outcrop data, they define seven
Richard R. Hillis   +10 more
core   +1 more source

Geochemical Signature of Mesozoic Volcanic and Granitic Rocks in Madina Regency Area, North Sumatra, Indonesia, and its Tectonic Implication

open access: yesIndonesian Journal on Geoscience, 2014
http://dx.doi.org/10.17014/ijog.vol4no2.20094Five samples consisting of two Permian-Triassic basalts, two Triassic-Jurassic granitic rocks, and a Miocene andesite were collected from the Madina Regency area in North Sumatra that is regionally situated on
Iskandar Zulkarnain
doaj   +1 more source

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