Petrogenetic constraints for the genesis of Archaean sanukitoid suites: geochemistry and isotopic evidence from Karelia, Baltic Shield

Kovalenko, A. V.; Clemens, J. D.; Саватенков, В. М.

doi:10.1016/j.lithos.2004.05.006

Cited by 82 publications

(26 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…However, it is evident that the lower Mg number and P 2 O 5 contents and higher K 2 O/Na 2 O ratios of all potassic granites in this study are comparable to typical Phanerozoic high Ba-Sr granites ( Fig. 10a-c; Tarney and Jones, 1994;Fowler et al, 2001;Moyen et al, 2001Moyen et al, , 2003Qian et al, 2003;Fowler et al, 2008;Ye et al, 2008;Choi et al, 2009), and are distinct from Archean sanukitoids and the Closepet-type granites (e.g., Smithies and Champion, 2000;Halla, 2005;Kovalenko et al, 2005;de Oliveira et al, 2009;Martin et al, 2009;de Oliveira et al, 2010). They are also distinguishable from the late Archean sanukitoids and adakitic intrusions in the study area (see Fig.…”

Section: Petrological Classificationsupporting

confidence: 46%

Late Neoarchean potassic high Ba–Sr granites in the Taishan granite–greenstone terrane: Petrogenesis and implications for continental crustal evolution

Peng

Wilde

et al. 2013

Chemical Geology

View full text Add to dashboard Cite

Section: Petrological Classificationsupporting

confidence: 46%

Late Neoarchean potassic high Ba–Sr granites in the Taishan granite–greenstone terrane: Petrogenesis and implications for continental crustal evolution

Peng

Wilde

et al. 2013

Chemical Geology

View full text Add to dashboard Cite

“…characteristics similar to the coeval depleted mantle, whereas others have lower initial ε Nd (t) values (Kovalenko et al, 2005). The later is widely observed by various authors like Shirey and Hanson (1984) who first introduced the term sanukitoid to Archean Shield.…”

Section: Zhou Et Al 2009amentioning

confidence: 85%

Neoarchean (2.5–2.8Ga) crustal growth of the North China Craton revealed by zircon Hf isotope: A synthesis

Wang

Liu

2012

Geoscience Frontiers

View full text Add to dashboard Cite

The crustal growth of the North China Craton (NCC) during the Neoarchean time (2.5e2.8 Ga) is a hotly controversial topic, with some proposing that the main crustal growth occurred in the late Neoarchean (2.5e2.6 Ga), in agreement with the time of the magmatism, whereas others suggest that the main crustal accretion took place during early Neoarchean time (2.7e2.8 Ga), consistent with the time of crustalformation of other cratons in the world. Zircon U-Pb ages and Hf isotope compositions can provide rigorous constraints on the time of crustal growth and the evolution and tectonic division of the NCC. In this contribution, we make a comprehensive review of zircon Hf isotope data in combination with zircon U-Pb geochronology and some geochemistry data from various divisions of the NCC with an aim to constrain the Neoarchean crustal growth of the NCC. The results suggest that both 2.7e2.8 Ga and 2.5e2.6 Ga crustal growth are distributed over the NCC and the former is much wider than previously suggested. The Eastern block is characterized by the main 2.7e2.8 Ga crustal growth with local new crustal-formation at 2.5e2.6 Ga, and the Yinshan block is characterized by w2.7 Ga crustal accretion as revealed by Hf-isotope data of detrital zircons from the Zhaertai Group. Detrital zircon data of the Khondalite Belt indicate that the main crustal growth period of the Western block is Paleoproterozoic involving some w2.6 Ga and minor Early-to Middle-Archean crustal components, and the crustal accretion in the Trans-North China Orogen (TNCO) has a wide age range from 2.5 Ga to 2.9 Ga with a notable regional discrepancy. Zircon Hf isotope compositions, coupled with zircon ages and other geochemical data suggest that the southern margin may not be an extension of the TNCO, and the evolution and tectonic division of the NCC is more complex GEOSCIENCE FRONTIERS journal homepage: www.elsevier.com/locate/gsf GEOSCIENCE FRONTIERS 3(2) (2012) 147e173 than previously proposed, probably involving multi-stage crustal growth and subduction processes. However, there is no doubt that 2.7e2.8 Ga magmatism and crustal-formation are more widely distributed than previously considered, which is further supported by the data of zircons from Precambrian lower crustal rocks, overlying sedimentary cover, modern river sediments and Late Neoarchean syenogranites. ª 2011, China University of Geosciences (Beijing) and Peking University. Production and hosting by Elsevier B.V. All rights reserved.

show abstract

“…Several recent studies of modern andesites including comprehensive melt inclusion measurements [49,55], indicate that such intermediate compositions can indeed form as a result of melt mixing in deep-seated magma chambers with homogenization to form andesitic melts prior to the eruption of arc lavas.…”

Section: Discussionmentioning

confidence: 99%

A Geochemical Overview of Mid-Archaean Metavolcanic Rocks from Southwest Greenland

Szilas

2018

Geosciences

View full text Add to dashboard Cite

Abstract:The present contribution reviews bulk-rock geochemical data for mid-Archaean (ca. 3075-2840 Ma) metavolcanic rocks from the North Atlantic Craton of southwest Greenland. The data set includes the most recent high quality major and trace element geochemical analyses for ten different supracrustal/greenstone belts in the region. When distilling the data set to only include the least altered metavolcanic rocks, by filtering out obviously altered samples, mafic/ultramafic cumulate rocks, late-stage intrusive sheets (dolerites) and migmatites, the remaining data (N = 427) reveal two fundamentally distinct geochemical suites. The contrasting trends that emerge from the filtered geochemical data set, which best represents the melt compositions for these mid-Archaean metavolcanic rocks are: (1) tholeiitic (mainly basaltic) versus (2) calc-alkaline (mainly andesitic). These two rock suites are effectively separated by their La/Sm ratios (below or above three, respectively). It is demonstrated by geochemical modelling that the two contrasting suites cannot be related by either fractional crystallization or crustal assimilation processes, despite occurring within the same metavolcanic sequences. The tholeiitic basaltic rocks were directly mantle-derived, whereas the petrogenesis of the calc-alkaline andesitic rocks involve a significant (>50%) felsic component. The felsic contribution in the calc-alkaline suite could either represent slab-melt metasomatism of their mantle source, mafic-felsic magma mixing, or very large degrees of partial melting of mafic lower crust. At face value, the occurrence of andesites, and the negative Nb-Ta-Ti-anomalies of both suites, is consistent with a subduction zone setting for the origin of these metavolcanic rocks. However, the latter geochemical feature is inherent to processes involving crustal partial melts, and therefore independent lines of evidence are needed to substantiate the hypothesis that plate tectonic processes were already operating by the mid-Archaean.

show abstract

Petrogenetic constraints for the genesis of Archaean sanukitoid suites: geochemistry and isotopic evidence from Karelia, Baltic Shield

Cited by 82 publications

References 22 publications

Late Neoarchean potassic high Ba–Sr granites in the Taishan granite–greenstone terrane: Petrogenesis and implications for continental crustal evolution

Late Neoarchean potassic high Ba–Sr granites in the Taishan granite–greenstone terrane: Petrogenesis and implications for continental crustal evolution

Neoarchean (2.5–2.8Ga) crustal growth of the North China Craton revealed by zircon Hf isotope: A synthesis

A Geochemical Overview of Mid-Archaean Metavolcanic Rocks from Southwest Greenland

Contact Info

Product

Resources

About