Results 31 to 40 of about 1,938 (228)

U-Pb geochronology of the Fort Augustus granite gneiss: constraints on the timing of Neoproterozoic and Palaeozoic tectonothermal events in the NW Highlands of Scotland [PDF]

, 2001
The West Highland granite gneiss suite in Inverness-shire, Scotland, represents a series of S-type, anatectic granites formed by partial melting of host Neoproterozoic metasediments of the Moine Supergroup.
Kinny, P.D., Strachan, R.A., P. D. KINNY, Strachan, RA, Paterson, BA, Friend, C.R.L., Paterson, B.A., Kinny, PD, Rogerson, G., C. R. L. FRIEND, Rogers, G, G. ROGERS, Friend, CRL, R. A. STRACHAN, B. A. PATERSON   +14 more
core   +1 more source

Zircon in amphibolites from Naxos, Aegean Sea, Greece: Origin, significance and tectonic setting

, 2020
We report U–Pb zircon ages of c. 700–550 Ma, 262–220 Ma, 47–38 Ma and 15–14 Ma from amphibolites on Naxos Island in the Aegean extensional province of Greece. The zircon has complex internal structures.
Bolhar, Robert, Ring, U, Ireland, Trevor
core   +2 more sources

Zircon U-Pb geochronology of the Gongzhu Co gneiss in the Zhongba block from Ali, Tibet and its geological significance

地质科技通报, 2023
The Zhongba block, an important tectonic unit of the western segment of the Indus-Tsangpo suture zone (ITSZ) in southern Tibet, is significant for determining tectonic affinity and paleogeographic reconstruction along the northern margin of the Gondwana.
Shengwei Li, Meihua Wei, Ting Huang, Qiang Liu   +3 more
doaj   +1 more source

Zircon dating of the basalt and felsic dyke in Haveri, SW Finland [PDF]

Bulletin of the Geological Society of Finland, 2022
The E-MORB type Haveri basalt differs from the volcanic arc type rocks in the Tampere belt showing no subduction signature. It is considered to have formed in a marginal basin prior to the volcanic arc. We present here zircon U-Pb dating on two samples.
Jaakko Kara, Markku Väisänen, Hugh O'Brien   +2 more
doaj   +1 more source

Geochronology, trace elements and Hf isotopic geochemistry of zircons from Swat orthogneisses, Northern Pakistan

Open Geosciences, 2020
In this study, zircon grains are applied for U–Pb dating, Hf isotopes and trace elements to reveal the origin of magmatism and tectonic evolution of Late Paleozoic rocks of the Indian plate, Northern Pakistan.
Sheikh Lawangin, Lutfi Wasiq, Zhao Zhidan, Awais Muhammad   +3 more
doaj   +1 more source

Provenance of zircon of the lowermost sedimentary cover, Estonia, East-European Craton [PDF]

Bulletin of the Geological Society of Finland, 1999
Bulk and accessory mineral composition of fresh and weathered crystalline rocks, and sedimentary deposits overlying the crystalline-sedimentary unconformity have been examined in core samples from 28 drill holes in Estonia.
M. Konsa, V. Puura
doaj   +1 more source

Deformation-related microstructures in magmatic zircon and implications for diffusion [PDF]

, 2009
An undeformed glomeroporphyritic andesite from the Sunda Arc of Java, Indonesia, contains zoned plagioclase and amphibole glomerocrysts in a fine-grained groundmass and records a complex history of adcumulate formation and subsequent magmatic ...
Reddy, Steven Michael, Smyth, Helen R., Hamilton, Patrick Joseph, Timms, Nicholas E.   +3 more
core   +2 more sources

Cadomian/Pan-African consolidation of the Iberian Massif assessed by its detrital and inherited zircon populations: is the ~610Ma age peak a persistent Cadomian magmatic inheritance or the key to unravel its Pan-African basement?

Geologica Acta, 2023
This work assessed the age distribution of Cadomian/Pan-African orogenic events (550-590 and 605-790Ma, respectively) in several zones of Iberian Massif by means of detrital and inherited zircon analysis compilation.
Martim Chichorro, Ana Rita Solà, Telmo Bento dos Santos, João Lains Amaral, Lourenço Crispim   +4 more
doaj  

Neoproterozoic magmatic evolution of the southern Ouaddaï Massif (Chad)

BSGF - Earth Sciences Bulletin, 2020
This paper presents new petrological, geochemical, isotopic (Nd) and geochronological data on magmatic rocks from the poorly known southern Ouaddaï massif, located at the southern edge of the so-called Saharan metacraton. This area is made of greenschist
Djerossem Félix, Berger Julien, Vanderhaeghe Olivier, Isseini Moussa, Ganne Jérôme, Zeh Armin   +5 more
doaj   +1 more source

S1 and S2: Lower crustal hot zones as zircon incubators? Inherited zircon antecrysts in diorites from a mafic mush reservoir

, 2023
Reference material results (S1) and scanning electron microscope images (S2)
Lim, Hoseong, Nebel, Oliver, Weinberg, Roberto F., Nebel-Jacobsen, Yona, Barrote, Vitor R., Park, Jongkyu, Myeong, Bora, Cawood, Peter A.   +7 more
openaire   +1 more source