Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Isotopic Sm-Nd signatures of Precambrian Banded Iron Formation from the Fennoscandian shield, East-European Platform, and Bundelkhand craton, India. / Alfimova, N.; Raza, Mohd Baqar; Felitsyn, S.; Matrenichev, V.; Bogomolov, E.; Nasipuri, P.; Saha, L.; Pati, J. K.; Kumar, V.
в: Precambrian Research, Том 328, 15.07.2019, стр. 1-8.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Isotopic Sm-Nd signatures of Precambrian Banded Iron Formation from the Fennoscandian shield, East-European Platform, and Bundelkhand craton, India
AU - Alfimova, N.
AU - Raza, Mohd Baqar
AU - Felitsyn, S.
AU - Matrenichev, V.
AU - Bogomolov, E.
AU - Nasipuri, P.
AU - Saha, L.
AU - Pati, J. K.
AU - Kumar, V.
PY - 2019/7/15
Y1 - 2019/7/15
N2 - In this communication, we report geochemical and Sm-Nd isotope data of Banded Iron Formation (BIF) from Kola-Karelia (Fennoscandian shield), East-European Platform and Bundelkhand craton, N-E India. The BIFs from Kola-Karelia (Algoma type), and Bundelkhand Craton (Algoma type), north-central India, and East-European Platform (Superior type) characterized by alternate domains of quartz-rich and iron-rich layers. Except for magnetite and hematite, orthopyroxene, amphibole, and garnet are the other dominant minerals present the BIF's. The shale-normalized REE spectra of iron-rich layers of Bundelkhand, Kola-Karelia and East European BIFs are similar. The εNd [t] for silica-rich layers is higher compared to the iron-rich layers for all studied samples. The higher εNd [t] values (around +5.0) for silica-rich layers from Kola-Karelia, Bundelkhand BIF and East European Platform suggest a juvenile source for silica. The lower εNd[t] values (−5 to +2) for iron-rich layers from the same samples implies continental source for the iron. The present study suggests that the sedimentation mechanisms of silica and iron for Algoma as well as Superior types BIFs are similar despite spatial diversity.
AB - In this communication, we report geochemical and Sm-Nd isotope data of Banded Iron Formation (BIF) from Kola-Karelia (Fennoscandian shield), East-European Platform and Bundelkhand craton, N-E India. The BIFs from Kola-Karelia (Algoma type), and Bundelkhand Craton (Algoma type), north-central India, and East-European Platform (Superior type) characterized by alternate domains of quartz-rich and iron-rich layers. Except for magnetite and hematite, orthopyroxene, amphibole, and garnet are the other dominant minerals present the BIF's. The shale-normalized REE spectra of iron-rich layers of Bundelkhand, Kola-Karelia and East European BIFs are similar. The εNd [t] for silica-rich layers is higher compared to the iron-rich layers for all studied samples. The higher εNd [t] values (around +5.0) for silica-rich layers from Kola-Karelia, Bundelkhand BIF and East European Platform suggest a juvenile source for silica. The lower εNd[t] values (−5 to +2) for iron-rich layers from the same samples implies continental source for the iron. The present study suggests that the sedimentation mechanisms of silica and iron for Algoma as well as Superior types BIFs are similar despite spatial diversity.
KW - Banded Iron Formation
KW - Bundelkhand craton
KW - Continental runoff
KW - East-European Platform
KW - Juvenile source
KW - Kola-Karelia
KW - Sm-Nd isotope systematics
KW - SEAWATER
KW - YTTRIUM
KW - SI
KW - ALGAE
KW - GREENLAND
KW - RARE-EARTH-ELEMENTS
UR - http://www.scopus.com/inward/record.url?scp=85064245112&partnerID=8YFLogxK
U2 - 10.1016/j.precamres.2019.04.008
DO - 10.1016/j.precamres.2019.04.008
M3 - Article
AN - SCOPUS:85064245112
VL - 328
SP - 1
EP - 8
JO - Precambrian Research
JF - Precambrian Research
SN - 0301-9268
ER -
ID: 41538845