File Download
There are no files associated with this item.
Links for fulltext
(May Require Subscription)
- Publisher Website: 10.1016/j.jseaes.2003.10.011
- Scopus: eid_2-s2.0-14944373850
- WOS: WOS:000228247800002
- Find via
Supplementary
- Citations:
- Appears in Collections:
Article: Nd isotopic constraints on crustal formation in the North China Craton
Title | Nd isotopic constraints on crustal formation in the North China Craton |
---|---|
Authors | |
Keywords | Crustal growth Model age North China Craton Sm-Nd Tectonic evolution |
Issue Date | 2005 |
Publisher | Pergamon. The Journal's web site is located at http://www.elsevier.com/locate/jseaes |
Citation | Journal Of Asian Earth Sciences, 2005, v. 24 n. 5 SPEC. ISS., p. 523-545 How to Cite? |
Abstract | Recent tectonic analysis suggests that the North China Craton consists of two Archean continental blocks, called the Eastern and Western Blocks, separated by the Paleoproterozoic Trans-North China Orogen. Although the published geochronological data are not sufficient to constrain the detailed tectonothermal evolution of the craton, the available Nd isotopic data show some important differences in Nd model ages between the tectonic units. The Eastern Block shows two main Nd model age peaks, one between 3.6 and 3.2 Ga and the other between 3.0 and 2.6 Ga. Limited Nd isotopic data from the Western Block show a large range of model ages between 3.2 and 2.4 Ga. These differences are consistent with the recently-proposed model. The Nd isotopic data from mantle-derived mafic rocks indicate that the mantle beneath the North China Craton was depleted in the Archean, consistent with major crustal growth during this period. In the Paleoproterozoic, however, the mantle-derived mafic rocks show negative ε Nd(t) values, implying crustal contamination. This may have resulted from subduction and collision between the Eastern and Western Block, implying that the mechanisms of crustal formation and evolution may have been different between the Archean and Paleoproterozoic. The North China Craton was re-activated by addition of mantle-derived magma into the lower crust in the late Mesozoic, resulting in rejuvenation of the lower crust. This indicates that underplating is also an important mechanism for continental addition, although in this case it may not equate to crustal growth, since it was preceded by removal of lithospheric mantle and possible some lower crust. © 2004 Elsevier Ltd. All rights reserved. |
Persistent Identifier | http://hdl.handle.net/10722/72880 |
ISSN | 2023 Impact Factor: 2.7 2023 SCImago Journal Rankings: 0.964 |
ISI Accession Number ID | |
References |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Wu, F | en_HK |
dc.contributor.author | Zhao, G | en_HK |
dc.contributor.author | Wilde, SA | en_HK |
dc.contributor.author | Sun, D | en_HK |
dc.date.accessioned | 2010-09-06T06:45:59Z | - |
dc.date.available | 2010-09-06T06:45:59Z | - |
dc.date.issued | 2005 | en_HK |
dc.identifier.citation | Journal Of Asian Earth Sciences, 2005, v. 24 n. 5 SPEC. ISS., p. 523-545 | en_HK |
dc.identifier.issn | 1367-9120 | en_HK |
dc.identifier.uri | http://hdl.handle.net/10722/72880 | - |
dc.description.abstract | Recent tectonic analysis suggests that the North China Craton consists of two Archean continental blocks, called the Eastern and Western Blocks, separated by the Paleoproterozoic Trans-North China Orogen. Although the published geochronological data are not sufficient to constrain the detailed tectonothermal evolution of the craton, the available Nd isotopic data show some important differences in Nd model ages between the tectonic units. The Eastern Block shows two main Nd model age peaks, one between 3.6 and 3.2 Ga and the other between 3.0 and 2.6 Ga. Limited Nd isotopic data from the Western Block show a large range of model ages between 3.2 and 2.4 Ga. These differences are consistent with the recently-proposed model. The Nd isotopic data from mantle-derived mafic rocks indicate that the mantle beneath the North China Craton was depleted in the Archean, consistent with major crustal growth during this period. In the Paleoproterozoic, however, the mantle-derived mafic rocks show negative ε Nd(t) values, implying crustal contamination. This may have resulted from subduction and collision between the Eastern and Western Block, implying that the mechanisms of crustal formation and evolution may have been different between the Archean and Paleoproterozoic. The North China Craton was re-activated by addition of mantle-derived magma into the lower crust in the late Mesozoic, resulting in rejuvenation of the lower crust. This indicates that underplating is also an important mechanism for continental addition, although in this case it may not equate to crustal growth, since it was preceded by removal of lithospheric mantle and possible some lower crust. © 2004 Elsevier Ltd. All rights reserved. | en_HK |
dc.language | eng | en_HK |
dc.publisher | Pergamon. The Journal's web site is located at http://www.elsevier.com/locate/jseaes | en_HK |
dc.relation.ispartof | Journal of Asian Earth Sciences | en_HK |
dc.subject | Crustal growth | en_HK |
dc.subject | Model age | en_HK |
dc.subject | North China Craton | en_HK |
dc.subject | Sm-Nd | en_HK |
dc.subject | Tectonic evolution | en_HK |
dc.title | Nd isotopic constraints on crustal formation in the North China Craton | en_HK |
dc.type | Article | en_HK |
dc.identifier.openurl | http://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1367-9120&volume=24&issue=5&spage=523&epage=545&date=FEB&atitle=Nd+isotopic+constraints+on+crustal+formation+in+the+North+China+Craton | en_HK |
dc.identifier.email | Zhao, G:gzhao@hkucc.hku.hk | en_HK |
dc.identifier.authority | Zhao, G=rp00842 | en_HK |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1016/j.jseaes.2003.10.011 | en_HK |
dc.identifier.scopus | eid_2-s2.0-14944373850 | en_HK |
dc.identifier.hkuros | 108533 | en_HK |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-14944373850&selection=ref&src=s&origin=recordpage | en_HK |
dc.identifier.volume | 24 | en_HK |
dc.identifier.issue | 5 SPEC. ISS. | en_HK |
dc.identifier.spage | 523 | en_HK |
dc.identifier.epage | 545 | en_HK |
dc.identifier.isi | WOS:000228247800002 | - |
dc.publisher.place | United Kingdom | en_HK |
dc.identifier.scopusauthorid | Wu, F=40561925600 | en_HK |
dc.identifier.scopusauthorid | Zhao, G=7403296321 | en_HK |
dc.identifier.scopusauthorid | Wilde, SA=35254758600 | en_HK |
dc.identifier.scopusauthorid | Sun, D=7403969024 | en_HK |
dc.identifier.issnl | 1367-9120 | - |