Results 21 to 30 of about 549,859 (138)
Bulletin of the Mineral Research and Exploration, 2019 The Hamit pluton forms part of the Central Anatolian Crystalline Complex. It is located N-NE of Kaman (Kirsehir). It covers an area of about 120 km2. The geochemical contents of 63 rock samples collected from this pluton were analyzed for their origin ...
Fusun YALCIN +3 more
doaj +1 more source
Anais da Academia Brasileira de Ciências, 2003 The Arenópolis volcano-sedimentary sequence is located in the southern part of the Goiás Magmatic Arc and includes a ca. 900 Ma calc-alkaline arc sequence made of volcanic rocks ranging in composition from basalts to rhyolites, metamorphosed under ...
Márcio M. Pimentel +2 more
doaj +1 more source
Ecological Indicators, 2023 Trace element pollution in river sediments from multiple sources can pose ecological risks to aquatic systems. Therefore, the evaluation of elemental contamination and ecological risks in sediments is important for the proper management of a river system.
Md. Rezanul Islam +5 more
doaj +1 more source
Could Stannern-trend eucrites be crustal-contaminated melts? [PDF]
, 2007 In this paper, we show that the composition of Stannern trend eucrites can be satisfactorily explained by contamination of normal main group eucrites by a crustal partial ...
Greenwood, R.C. +6 more
core +5 more sources
Geology and petrology of the margin of the Rhum ultrabasic intrusion, Inner Hebrides, Scotland [PDF]
, 2015 Country rocks surrounding the Rhum Tertiary ultrabasic complex have experienced severe thermal metamorphism, partial melting and mobilization resulting in the formation of extensive areas of intrusion breccia.
Greenwood, Richard C.
core +1 more source
Geology and crystallization conditions of the Särkiniemi intrusion and related nickel-copper ore, central Finland – implications for depth of emplacement of 1.88 Ga nickel-bearing intrusions [PDF]
Bulletin of the Geological Society of Finland, 2020 Several Ni-Cu deposits occur within the Kotalahti area, central Finland, in proximity to an Archaean gneiss dome surrounded by a Palaeoproterozoic craton-margin supracrustal sequence comprising quartzites, limestones, calc-silicate rocks, black schists ...
Hannu V. Makkonen, Pekka Tuisku
doaj +1 more source
Lithostratigraphy, geology and geochemistry of the volcanic rocks of the Vaigat Formation on Disko and Nuussuaq, Paleocene of West Greenland [PDF]
Geological Survey of Denmark and Greenland Bulletin, 2017 The Paleocene volcanic rocks in the Nuussuaq Basin on Disko and Nuussuaq comprise the Vaigat Formation (c. 62–61 Ma) and the Maligât Formation (c. 60 Ma). The Vaigat Formation in this area is 0–1600 m thick and is dominated by olivine-rich picrites.
Asger Ken Pedersen +2 more
doaj
Solid Earth Sciences, 2018 The Triassic alkaline basaltic rocks (TABR) of North Kamarbon are located in Central Alborz, which is regarded as the northern part of the Alpine-Himalayan orogenic belt.
Roghieh Doroozi +3 more
doaj +1 more source
Composition of sources in the Kinkil complex of Western Kamchatka based on the isotopic-geochemical data [PDF]
Вестник Камчатской региональной ассоциации "Учебно-научный центр". Серия: Науки о Земле, 2019 The authors studied the isotope-geochemical composition of the Eocene volcanic rocks from the Kinkilsk complex of Western Kamchatka. The peculiarities of the distribution of high field strength and heavy rare-earth elements and their ratio, as well as ...
Fedorov, P.I. +3 more
doaj +1 more source
Continental growth and the crustal record [PDF]
, 2013 Funding: Natural Environment Research Council (NERC) (grant NE/J021822/1) and the University of St. Andrews.The continental crust is the archive of Earth history.
Hawkesworth, Chris +2 more
core +1 more source