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Article: Growth of the Huoerguosi anticline (north Tianshan Mountains) by limb rotation since the late Miocene

TitleGrowth of the Huoerguosi anticline (north Tianshan Mountains) by limb rotation since the late Miocene
Authors
KeywordsCenozoic
Growth Strata
Huoerguosi Anticline
Limb Rotation
Tianshan Mountains
Issue Date2008
PublisherZhongguo Kexue Zazhishe. The Journal's web site is located at http://219.238.6.200/journal?code=98
Citation
Chinese Science Bulletin, 2008, v. 53 n. 19, p. 3028-3036 How to Cite?
AbstractThe Huoerguosi anticline, located in the north Tianshan Mountains piedmont fold-and-thrust belt, is a trending east-west fault-related fold. In the cross section along the Jingou River, its south limb is composed of the pre-growth strata of the Anjihaihe (E2-3 a), the Shawan ((E3-N 1)s), the Taxihe (N1 t) and the lower part of the Dushanzi (N2 d) Formations, trending east-west and dipping to south 55°, and the growth strata of the upper part of the Dushanzi (N2 d) and Xiyu ((N2-Q1)x) Formations, dips of which decrease from 55° at the base of the growth strata to 47° at the bottom of the Xiyu ((N2-Q1)x) Formation to ∼0° at the top of the Xiyu ((N2-Q1)x) Formation. The strata at the north limb of the anticline are vertical or over-turned, and are cut by the breakthrough thrusts to result in the drag fold. In the depth, the anticline is symmetric, and its core comprises the Cretaceous and the Jurassic coal-bearing beds. In the seismic profile, the seismic reflectors of pre-growth strata at the south limb of the anticline dip to south constantly, and ones of the growth strata fan southward, whose dips decrease upward. The geometry of the south limb growth strata outcropped along the Jingou River valley and the deep structure of the anticline shown in the seismic profile indicate that the Huoerguosi anticline is a detachment fold anticline growing by limb rotation. Based on the growth model and magnetostratigraphic age, during the growing process of the Huoerguosi anticline, the average shortening rate absorbed by the south limb is ∼0.46 mm/a, and the average uplifting rate of the anticline is ∼0.86 mm/a which exceeds the average deposition rate, which is in accordance with the fact that the top of the anticline is intensely eroded. Considering symmetric geometry of the Huoerguosi anticline and ignoring the breakthrough thrusts, the shortening of the whole anticline should be more than ∼0.92 mm/a, doubling the shortening rate determined from the growth at the south limb. © 2008 Science in China Press and Springer-Verlag GmbH.
Persistent Identifierhttp://hdl.handle.net/10722/92050
ISSN
2015 Impact Factor: 1.789
ISI Accession Number ID
Funding AgencyGrant Number
National Natural Science Foundation of China40702031
Funding Information:

Supported by the National Natural Science Foundation of China (Grant No. 40702031)

References

 

DC FieldValueLanguage
dc.contributor.authorWang, Sen_HK
dc.contributor.authorChen, Yen_HK
dc.contributor.authorLu, Hen_HK
dc.date.accessioned2010-09-17T10:34:36Z-
dc.date.available2010-09-17T10:34:36Z-
dc.date.issued2008en_HK
dc.identifier.citationChinese Science Bulletin, 2008, v. 53 n. 19, p. 3028-3036en_HK
dc.identifier.issn1001-6538en_HK
dc.identifier.urihttp://hdl.handle.net/10722/92050-
dc.description.abstractThe Huoerguosi anticline, located in the north Tianshan Mountains piedmont fold-and-thrust belt, is a trending east-west fault-related fold. In the cross section along the Jingou River, its south limb is composed of the pre-growth strata of the Anjihaihe (E2-3 a), the Shawan ((E3-N 1)s), the Taxihe (N1 t) and the lower part of the Dushanzi (N2 d) Formations, trending east-west and dipping to south 55°, and the growth strata of the upper part of the Dushanzi (N2 d) and Xiyu ((N2-Q1)x) Formations, dips of which decrease from 55° at the base of the growth strata to 47° at the bottom of the Xiyu ((N2-Q1)x) Formation to ∼0° at the top of the Xiyu ((N2-Q1)x) Formation. The strata at the north limb of the anticline are vertical or over-turned, and are cut by the breakthrough thrusts to result in the drag fold. In the depth, the anticline is symmetric, and its core comprises the Cretaceous and the Jurassic coal-bearing beds. In the seismic profile, the seismic reflectors of pre-growth strata at the south limb of the anticline dip to south constantly, and ones of the growth strata fan southward, whose dips decrease upward. The geometry of the south limb growth strata outcropped along the Jingou River valley and the deep structure of the anticline shown in the seismic profile indicate that the Huoerguosi anticline is a detachment fold anticline growing by limb rotation. Based on the growth model and magnetostratigraphic age, during the growing process of the Huoerguosi anticline, the average shortening rate absorbed by the south limb is ∼0.46 mm/a, and the average uplifting rate of the anticline is ∼0.86 mm/a which exceeds the average deposition rate, which is in accordance with the fact that the top of the anticline is intensely eroded. Considering symmetric geometry of the Huoerguosi anticline and ignoring the breakthrough thrusts, the shortening of the whole anticline should be more than ∼0.92 mm/a, doubling the shortening rate determined from the growth at the south limb. © 2008 Science in China Press and Springer-Verlag GmbH.en_HK
dc.languageengen_HK
dc.publisherZhongguo Kexue Zazhishe. The Journal's web site is located at http://219.238.6.200/journal?code=98en_HK
dc.relation.ispartofChinese Science Bulletinen_HK
dc.subjectCenozoicen_HK
dc.subjectGrowth Strataen_HK
dc.subjectHuoerguosi Anticlineen_HK
dc.subjectLimb Rotationen_HK
dc.subjectTianshan Mountainsen_HK
dc.titleGrowth of the Huoerguosi anticline (north Tianshan Mountains) by limb rotation since the late Mioceneen_HK
dc.typeArticleen_HK
dc.identifier.emailChen, Y:ychenc@hkucc.hku.hken_HK
dc.identifier.authorityChen, Y=rp1318en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1007/s11434-008-0230-8en_HK
dc.identifier.scopuseid_2-s2.0-52949132247en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-52949132247&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume53en_HK
dc.identifier.issue19en_HK
dc.identifier.spage3028en_HK
dc.identifier.epage3036en_HK
dc.identifier.eissn1861-9541-
dc.identifier.isiWOS:000259560900016-

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