Age and Sources of Dzhagdy Terrane Metasedimentary Rocks in the Mongol–Okhotsk Fold Belt: Detrital Zircon U–Pb and Lu–Hf Isotopic Data

2020 ◽  
Vol 14 (1) ◽  
pp. 20-31 ◽  
Author(s):  
V. A. Zaika ◽  
A. A. Sorokin
2013 ◽  
Vol 24 (3-4) ◽  
pp. 1127-1151 ◽  
Author(s):  
Dongfang Song ◽  
Wenjiao Xiao ◽  
Chunming Han ◽  
Zhonghua Tian ◽  
Zhongmei Wang

2021 ◽  
Author(s):  
Allison Severson ◽  
et al.

U-Pb LA-ICP-MS detrital zircon data for three samples collected along the western boundary of the Avalon terrane in southeastern New England


2021 ◽  
Author(s):  
Allison Severson ◽  
et al.

U-Pb LA-ICP-MS detrital zircon data for three samples collected along the western boundary of the Avalon terrane in southeastern New England


1991 ◽  
Vol 152 ◽  
pp. 85-94
Author(s):  
J.D Friderichsen ◽  
J.A Gilotti ◽  
N Henriksen ◽  
A.K Higgins ◽  
J.M Hull ◽  
...  

The crystalline rocks of Germania Land, Nordmarken and adjacent areas are dominated by grey, migmatitic quartzo-feldspathic orthogneisses with a complex history of emplacement and deformation. Ultramafites, eclogites and metasedimentary rocks are preserved as inclusions or trails of enclaves within the migmatitic orthogneisses. Later intrusive suites include metadolerite dykes, alkali feldspar metaporphyries and metagabbros. All these crystalline rocks have suffered thorough metamorphism and deformation, and three fabric events are recognised. Three systems of late mylonite zones are found: west of the study area in Hertugen af Orleans Land, along the east side of Stormlandet and Germania Land, and in northern Store Koldewey and Lille Koldewey. The region lies within the East Greenland Caledonian fold belt. Available isotopic data suggest the crystalline rocks include Archaean and Early Proterozoic suites. These have undergone variable degrees of later reworking on several occasions. It is unclear how much of the deformation history is Caledonian and how much pre-Caledonian. The latest fault displacements are post-Caledonian, as shown by local preservation of fault bounded outcrops of Carboniferous and Jurassic sedimentary rocks.


1990 ◽  
Vol 148 ◽  
pp. 127-132
Author(s):  
B Chadwick ◽  
C.R.L Friend ◽  
A.K Higgins

The land areas around Dove Bugt are dominated by quartzo-feldspathic orthogneisses with a complex history of emplacement and deformation. The oldest rocks recognised are supracrustal units, mainly marbles and rusty-weathering metasedimentary rocks. Locally gabbro-anorthosite units are associated with the supracrustal rocks. These rock units are cut by different phases of the gneisses, of which the most abundant are grey banded orthogneisses. Two different varieties of pink orthogneiss are also recognised. Different types of tabular amphibolitic bodies, relicts of dykes or sills, cut most rock types. The area lies within the East Greenland Caledonian fold belt, but available isotopic data suggest that the crystalline rocks include Archaean and early Proterozoic suites which have undergone uncertain degrees of Caledonian reworking. It is not clear at present how much of the deformation history of at least four periods of deformation and associated mylonitisation is Caledonian, and how much pre-Caledonian.


2021 ◽  
Author(s):  
Allison Severson ◽  
et al.

U-Pb LA-ICP-MS detrital zircon data for three samples collected along the western boundary of the Avalon terrane in southeastern New England


2019 ◽  
Author(s):  
Megan M. Koch ◽  
◽  
Justin V. Strauss ◽  
Karol Faehnrich ◽  
William C. McClelland

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