Results 71 to 80 of about 114,650 (297)

Deconvolving the pre-Himalayan Indian margin – tales of crustal growth and destruction [PDF]

, 2018
The metamorphic core of the Himalaya is composed of Indian cratonic rocks with two distinct crustal affinities that are defined by radiogenic isotopic geochemistry and detrital zircon age spectra.
Ahmad, Ali, Ali, Ali, Ali, Ali, Ali, Amato, Aoki, Be’eri-Shlevin, Be’eri-Shlevin, Blades, Botev, Cawood, Cawood, Cawood, Chen, Chen, Clift, Collins, Collins, Cui, DeCelles, DeCelles, Ding, Dyck, Gansser, Ge, Gehrels, Gehrels, Griffin, Guynn, Gürsu, Han, Hassanzadeh, Hawkesworth, Hopkinson, Horstwood, Hu, Hu, Huang, Iizuka, Iizuka, Isozaki, Kaur, Kay, Keppie, Kohn, Le Fort, Le Fort, Lee, Li, Li, Li, Li, Li, Li, Long, Long, Martin, Martin, McQuarrie, McQuarrie, Merdith, Morag, Morag, Mottram, Myrow, Myrow, Myrow, Nowell, Pan, Parrish, Richards, Roberts, Roberts, Robinson, Robinson, Scholl, Searle, Shen, Shu, Singh, Sláma, Song, Spakman, Spencer, Spencer, Spencer, Spencer, Spencer, Stern, Stern, Su, Tate, Thimm, Thomas, Veevers, von Huene, Wang, Wang, Wang, Wang, Wang, Wang, Wang, Wang, Wang, Wang, Wang, Webb, Webb, Woodhead, Woodhead, Yakymchuk, Yan, Yao, Yao, Yao, Yao, Yao, Yin, Yu, Yu, Yu, Yu, Zhang, Zhang, Zhou, Zhou, Zhu, Zhu, Zou   +132 more
core   +4 more sources

Confirmation of the impact origin of the Late Ordovician Tvären impact structure (southeast Sweden) and emplacement of impactites in a marine setting

Meteoritics &Planetary Science, EarlyView.
Abstract The Tvären structure in southeastern Sweden has been listed as a confirmed marine‐target impact structure for decades. However, to date, no measurements and/or indexed data of planar deformation features in quartz grains from the structure have been published or any other unequivocal evidence of impact.
Katarzyna J. Gajewska, Sanna Alwmark, Mikael Calner, Sylvain Richoz, Jens Ormö, Erik Sturkell, Carl Alwmark   +6 more
wiley   +1 more source

Paleozoic High Tides

Science, 1884
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openaire   +3 more sources

Rifting and arc-related early Paleozoic volcanism along the North Gondwana margin: geochemical and geological evidence from Sardinia (Italy) [PDF]

, 2012
Three series of volcanic rocks accumulated during the Cambrian to Silurian in the metasediment-dominated Variscan basement of Sardinia. They provide a record of the changing geodynamic setting of the North Gondwana margin between Upper Cambrian and ...
BUZZI L, FUNEDDA A., GAGGERO L, OGGIANO G   +3 more
core   +1 more source

Confirming the impact origin of the São Miguel do Tapuio structure, northeastern Brazil

Meteoritics &Planetary Science, EarlyView.
Abstract The São Miguel do Tapuio structure (SMT) is a remarkable, nearcircular feature of about 21 km diameter, centered at 5°37.6′ S, 41°23.3′ W in Piauí state, northeastern Brazil. The structure is located within the sedimentary strata of the Paleozoic–Mesozoic Parnaíba Basin and predominantly comprises sandstones of the Devonian Pimenteiras and ...
Alvaro Penteado Crósta, Neivaldo Araújo de Castro, Marcos Alberto Rodrigues Vasconcelos, Airton Natanael Coelho Dias, Ludovic Ferrière, Wolf Uwe Reimold, Ana Maria Góes, Jackson Alves Martins, Liliana Sayuri Osako, Raimundo Mariano Gomes Castelo Branco   +9 more
wiley   +1 more source

Geochemical support for a climbing habit within the Paleozoic seed fern genus Medullosa [PDF]

, 2011
A long-standing problem in paleobotany is the accurate identification of the growth habits and statures of fossil plants. Tissue-specific analysis of stable carbon isotope ratios in plant fossils can provide an independent perspective on this issue ...
Fischer, Woodward W., Wilson, Jonathan P.   +1 more
core   +2 more sources

Geophysical investigation of the Santa Marta impact structure—Piauí State, Brazil

Meteoritics &Planetary Science, EarlyView.
Abstract The Santa Marta impact structure in northeastern Brazil, recognized as a partially preserved complex crater, was investigated through an integrated geophysical study employing magnetotelluric (MT) and gravity methods. Our research provides constraints on the crater's subsurface architecture.
Elienara Vasconcelos, João De Oliveira, Marcos Vasconcelos, Martyn Unsworth, Andrea Santos‐Matos, Florivaldo Sena   +5 more
wiley   +1 more source

Zircon U–Pb ages of the Paleozoic volcaniclastic strata in the Junggar Basin, NW China

Open Geosciences
A large set of Paleozoic volcaniclastic rocks is exposed in the northwestern margin of the Junggar Basin from the southern part of the Central Asian Orogenic Belt.
Chun Fan
doaj   +1 more source

An exploration breakthrough in Paleozoic petroleum system of Huanghua Depression in Dagang Oilfield and its significance, North China

Petroleum Exploration and Development, 2019
In recent years, several wells in the Qibei and Wumaying buried hills of Dagang Oilfield tapped oil in the Carboniferous–Permian and Ordovician strata.
Xianzheng ZHAO, Xiugang PU, Wenya JIANG, Lihong ZHOU, Fengming JIN, Dunqing XIAO, Lixin FU, Hongjun LI   +7 more
doaj   +1 more source

Fault systems in multiply deformed regions of Eurasia

Russian Journal of Earth Sciences, 2023
We have studied the orogenic fragile deformation of the upper Earth’s crust of several areas of the Eurasian continent, where deformations have occurred many times – in the Tian Shan and Altai-Sayan regions of the Central Asian Paleozoic Fold Belt and in
Burtman V, Kolodyazhnyi S
doaj   +1 more source