Abstract
Four distinct components of natural remanent magnetization were isolated from a single site in welded tuffs in the Upper Cretaceous Kisin Group of the Sikhote Alin mountain range, Russia. In order to contribute toward a basis for an interpretation of multicomponent magnetization, rock magnetic experiments were performed on the welded tuffs. All four magnetization components essentially reside in magnetite. The lowest-temperature component up to 300 °C (component A: D = 349:3°, I = 60:9°, α95 = 7.3°, N = 7) is a present day viscous magnetization. The third-removed component (component C: D = 41.4°, I = 51.8°, α95 = 3.5°, N = 8), isolated over the temperature range of 450-560 °C, is a primary remanence. The second- and fourth-demagnetized components (component B: D = 174:7°, I = -53.1°, α95 = 21.2°, N = 3 and component D: D = 188.1°, I = -64.5°, α95 = 4.0°, N = 8. respectively) are secondary magnetizations related to a thermal event in Sikhote Alin between 66 and 51 Ma. Components B and D were acquired through different remagnetization processes. Component B is ascribed to a thermoviscous remanent magnetization carried by single-domain magnetite, and component D is a chemical remanent magnetization.
| Original language | English |
|---|---|
| Pages (from-to) | 431-439 |
| Number of pages | 9 |
| Journal | Journal of Asian Earth Sciences |
| Volume | 21 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - Jan 2003 |
| Externally published | Yes |
Fingerprint
Keywords
- Cretaceous
- Remanent magnetization
- Russia
ASJC Scopus subject areas
- Earth-Surface Processes
- Geology
Cite this
An example of multicomponent magnetization in welded tuffs : A case study of Upper Cretaceous welded tuffs of eastern Russia. / Uno, Koji; Otofuji, Yo Ichiro; Matsuda, Takaaki; Furukawa, Kuniyuki; Mishima, Toshiaki; Kuniko, Yoshiki; Enami, Ryo; Kulinich, Ruslan G.; Zimin, Petr S.; Matunin, Anatoly P.; Sakhno, Vladimir G.
In: Journal of Asian Earth Sciences, Vol. 21, No. 4, 01.2003, p. 431-439.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - An example of multicomponent magnetization in welded tuffs
T2 - A case study of Upper Cretaceous welded tuffs of eastern Russia
AU - Uno, Koji
AU - Otofuji, Yo Ichiro
AU - Matsuda, Takaaki
AU - Furukawa, Kuniyuki
AU - Mishima, Toshiaki
AU - Kuniko, Yoshiki
AU - Enami, Ryo
AU - Kulinich, Ruslan G.
AU - Zimin, Petr S.
AU - Matunin, Anatoly P.
AU - Sakhno, Vladimir G.
PY - 2003/1
Y1 - 2003/1
N2 - Four distinct components of natural remanent magnetization were isolated from a single site in welded tuffs in the Upper Cretaceous Kisin Group of the Sikhote Alin mountain range, Russia. In order to contribute toward a basis for an interpretation of multicomponent magnetization, rock magnetic experiments were performed on the welded tuffs. All four magnetization components essentially reside in magnetite. The lowest-temperature component up to 300 °C (component A: D = 349:3°, I = 60:9°, α95 = 7.3°, N = 7) is a present day viscous magnetization. The third-removed component (component C: D = 41.4°, I = 51.8°, α95 = 3.5°, N = 8), isolated over the temperature range of 450-560 °C, is a primary remanence. The second- and fourth-demagnetized components (component B: D = 174:7°, I = -53.1°, α95 = 21.2°, N = 3 and component D: D = 188.1°, I = -64.5°, α95 = 4.0°, N = 8. respectively) are secondary magnetizations related to a thermal event in Sikhote Alin between 66 and 51 Ma. Components B and D were acquired through different remagnetization processes. Component B is ascribed to a thermoviscous remanent magnetization carried by single-domain magnetite, and component D is a chemical remanent magnetization.
AB - Four distinct components of natural remanent magnetization were isolated from a single site in welded tuffs in the Upper Cretaceous Kisin Group of the Sikhote Alin mountain range, Russia. In order to contribute toward a basis for an interpretation of multicomponent magnetization, rock magnetic experiments were performed on the welded tuffs. All four magnetization components essentially reside in magnetite. The lowest-temperature component up to 300 °C (component A: D = 349:3°, I = 60:9°, α95 = 7.3°, N = 7) is a present day viscous magnetization. The third-removed component (component C: D = 41.4°, I = 51.8°, α95 = 3.5°, N = 8), isolated over the temperature range of 450-560 °C, is a primary remanence. The second- and fourth-demagnetized components (component B: D = 174:7°, I = -53.1°, α95 = 21.2°, N = 3 and component D: D = 188.1°, I = -64.5°, α95 = 4.0°, N = 8. respectively) are secondary magnetizations related to a thermal event in Sikhote Alin between 66 and 51 Ma. Components B and D were acquired through different remagnetization processes. Component B is ascribed to a thermoviscous remanent magnetization carried by single-domain magnetite, and component D is a chemical remanent magnetization.
KW - Cretaceous
KW - Remanent magnetization
KW - Russia
UR - http://www.scopus.com/inward/record.url?scp=0037277915&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0037277915&partnerID=8YFLogxK
U2 - 10.1016/S1367-9120(02)00067-6
DO - 10.1016/S1367-9120(02)00067-6
M3 - Article
AN - SCOPUS:0037277915
VL - 21
SP - 431
EP - 439
JO - Journal of Asian Earth Sciences
JF - Journal of Asian Earth Sciences
SN - 1367-9120
IS - 4
ER -