Results 31 to 40 of about 735,488 (214)

Multi-stage formation of the Feragen ophiolite, Norway: Implication from petrology and geochemistry of peridotites and chromitites and its potential for prospecting

China Geology
: The ultramafic massif of Feragen, which belongs to the eastern ophiolitic belt of Norway, has abundant amounts of chromite ores. Recent studies have revealed a complex melt evolution in a supra-subduction zone (SSZ) environment. This study presents new
Tian Qiu, Fa-hui Xiong, David G. Gee, Yuan Li, Jing-sui Yang   +4 more
doaj   +1 more source

Evolution Mechanism of Macromolecular Structure in Coal during Heat Treatment: Based on FTIR and XRD In Situ Analysis Techniques

Journal of Spectroscopy, 2019
Owing to the complexity and heterogeneity of coal during pyrolysis, the ex situ analytical techniques cannot accurately reflect the real coal pyrolysis process.
Dun Wu, Wenyong Zhang
doaj   +1 more source

Lamprophyre sites of Wajrakarur Kimberlite Field, Southern India: Potential candidates for developing as geoparks

International Journal of Geoheritage and Parks, 2023
This article presents field description of lamprophyres of the Wajrakarur Kimberlite Field (WKF) emphasising their geoscientific potential to develop and popularize them as geoparks.
Pothuri Ramesh Chandra Phani, Madabhooshi Srinivas, Ioannis Kamvisis, Rokalla Ananda Reddy   +3 more
doaj   +1 more source

Geological and geochemical characteristics and genesis of the Cishan gold deposit in Tongling ore cluster area, Anhui Province

Solid Earth Sciences, 2020
The Cishan gold deposit is a newly discovered medium-scale independent skarn gold deposit located in the Tongling ore cluster area of the Middle-Lower Yangtze Metallogenic Belt, and the ore-related intrusion is the Cishan pyroxene diorite. In this study,
Shasha Liu, Xiaoyong Yang, Linjie Chen, Yinan Li, Kai Zheng, Yu Hong   +5 more
doaj   +1 more source

Petrological and Mineralogical Characteristics of Exposed Materials on the Floors of the Lavoisier and Surrounding Craters

Remote Sensing, 2022
Five floor-fractured craters (FFCs), Lavoisier crater and four craters surrounding it (Lavoisier C, Lavoisier E, Lavoisier F, and Lavoisier H), are distributed along the boundary between the northwestern part of the Oceanus Procellarum and the highlands.
Eung Seok Yi, Kyeong Ja Kim, Christian Wöhler, Alexey A. Berezhnoy, Yong Ha Kim, Seulgi Moon   +5 more
doaj   +1 more source

The Caribbean Region

Trouillot Remixed, 2021
The result of a major international effort involving authors and organizations from 13 countries, this volume summarizes the complex geology and tectonic evolution of the Caribbean plate and its relation to the adjacent North American, South American ...
G. Dengo, J. E. Case
semanticscholar   +1 more source

Mineralogical evolution of the northern Bossoroca ophiolite, São Gabriel terrane

Brazilian Journal of Geology, 2020
Mineralogical evolution of ophiolites is significant to understand paleo-oceanic crust and mantle requiring multi-proxy techniques to identify steps in the processes. We studied the Bossoroca ophiolite from the southern Brasiliano Orogen, a prime example
Amanda Juliano Massuda, Léo Afraneo Hartmann, Gláucia Nascimento Queiroga, Marco Paulo de Castro, Carolina Gonçalves Leandro, Jairo Francisco Savian   +5 more
doaj   +1 more source

Subducted Carbon From Mantle Plume in Mid‐Ocean Ridge Basalts

Geophysical Research Letters
Deciphering the Earth's deep carbon cycle, from mantle plumes to mid‐ocean ridges, remains incompletely understood. In this study, we analyze the magnesium isotope composition of basalts collected from the South Mid‐Atlantic Ridge (SMAR), which have been
Haitao Zhang, Quanshu Yan, Xuefa Shi, Chuanshun Li, Fang Huang, Qiuyu Wen   +5 more
doaj   +1 more source

Investigation of petrology and petrogenesis of the Gaz Boland Neogene basalts, northwest of Shahr-e-Babak

Journal of Economic Geology, 2021
Introduction The Gaz Boland area is located in the northwest of Shahr-e-Babak city within the southern extension of the Urumieh-Dokhtar magmatic arc. The extended convergence history of the Neo-Tethys Ocean between Arabia and Eurasia (from ∼150 to 0 Ma)
Malihe Golestani
doaj   +1 more source

Continental Margin Ophiolites of Neotethys: Remnants of Ancient Ocean-Continent Transition Zone (OCTZ) Lithosphere and their Geochemistry, Mantle Sources and Melt Evolution Patterns

, 2015
We present an overview of the geology , eochemistry and petrogenesis of continental mar gin ophiolites (CMO), which represent the lithospheric remnants of riftgenerated paleo ocean – continent transition zones (OCTZ) in orogenic belts.
E. Saccani, Y. Dilek, M. Marroni, L. Pandolfi   +3 more
semanticscholar   +1 more source