Zhang, Xiawei Li, Yingjie Wang, Genhou Wang, Shuai Kong, Xingrui Wang, Xiaodong Liu, Zhibin
Published in
Frontiers in Earth Science
Investigation of intra-oceanic subduction can improve our understanding of plate tectonic processes and the history of continental growth. Evidence for intra-oceanic subduction in the Paleo-Asian Ocean has recently become an important focus of research, including the Diyanmiao ophiolite in central Inner Mongolia, North China. Here, we report a newl...
Holness, Marian B.; Humphreys, Madeleine C.S.; Namur, Olivier; 115929; Andersen, Jens C.O.; Tegner, Christian; Nielsen, Troels F.D.;
status: published
Holness, MB Humphreys, MCS Namur, O Andersen, JCØ Tegner, C Nielsen, TFD
Abstract
The Skaergaard Intrusion of East Greenland solidified as a closed system, with the development of progressively more fractionated material at the roof, floor and vertical walls of the magma chamber. We argue, using field observations of the exposed western margin together with detailed microstructural and geochemical analysis, that the mush...
Follmann, Jörg van der Zwan, Froukje M. Preine, Jonas Hübscher, Christian Bousquet, Romain Augustin, Nico
Published in
Frontiers in Earth Science
Plutonic rocks such as gabbros provide information on magmatic and tectonic processes which occur beneath a mid-ocean rift axis as well as on the formation of the oceanic crust. Igneous rocks, reported from the Red Sea Rift valley, have been limited to extrusive basalts so far. The only deeper crustal rocks found in the Red Sea area are from the ri...
Wee, Shu Ying Edgcomb, Virginia P. Beaudoin, David Yvon-Lewis, Shari Sylvan, Jason B.
Published in
Applied and Environmental Microbiology
International Ocean Discovery Program Expedition 360 drilled Hole U1473A at Atlantis Bank, an oceanic core complex on the Southwest Indian Ridge, with the aim of recovering representative samples of the lower oceanic crust. Recovered cores were primarily gabbro and olivine gabbro. These mineralogies may host serpentinization reactions that have the...
Snachev, V. I. Snachev, A. V. Puzhakov, B. A. Romanovskaya, M. A.
Published in
Moscow University Geology Bulletin
Abstract—This article describes the geological structure of the Sarsangi gabbro–diorite–plagiogranite complex located in the boundary zone between the Middle and South Urals. The formation of its massifs took place in the Late Silurian in the abyssal zone at approximately 6.5–7.0 km. The temperature ranges of crystallization of granodiorites and ga...
Naik, Anmol Sheikh, Janisar M Sheth, Hetu Samant, Hrishikesh D’Souza, Shawn
Published in
Journal of Earth System Science
The western Indian volcanic rifted margin, and its large-scale tectonic feature called the Panvel flexure, formed at 62.5 Ma during the late stages of Deccan Traps flood volcanism. We present a geological account of late-stage (≤ 62.5 Ma) Deccan volcanism and plutonism in the relatively poorly studied Thane–Vasai region in the Panvel flexure zone. ...
Ahmed, Ali Kakar, Muhammad Ishaq Naeem, Abdul Ahmed, Nisar Khan, Mehrab Panezai, Muhammad
Published in
Pakistan Journal of Geology
The Zhob Ophiolite is divided into three detached blocks including the Omzha block. The Omzha block is mapped and divided into lithological units such as ultramafic rock, mafic-felsic rock, and volcanic–volcaniclastic–pelagic rocks. These units are quite deformed and mixed up and are associated with one another by thrust faults. Petrography and geo...
Dobretsov, N. L. Sklyarov, E. V. Buslov, M. M. Kulikova, A. V. Lavrenchuk, A. V.
Published in
Petrology
AbstractEclogite-like rocks of the Olkhon terrane correspond to two types according to the mode of occurrence and mineral compositions, although both types developed after the same type of gabbro of a single complex. The rocks of the first type are composed of garnet, clinopyroxene, pargasite (± scapolite, ± anorthite, ± spinel) and occur as thin v...
Silantyev, S. A. Kostitsyn, Yu. A. Shabykova, V. V. Krasnova, E. A. Ermakov, Ya. Yu. Dogadkin, D. N. Zhilkina, A. V.
Published in
Petrology
AbstractThe paper presents the first data on the Sr and Nd isotope composition of rocks from a unique collection of magmatic rocks of all petrographic types (basalts, gabbro, and peridotites) belonging to the lithosphere at the convergent plate boundary in the Aleutian Arc area. The rock samples were collected over large areas in the Northwest Paci...
