Geochemical and Petrological Studies of Permo-Carboniferous Sandstones from the Rangit Pebble-Slate Formation, Sikkim Lesser Himalaya, India: Implication for Provenance, Tectonic Setting, and Paleoclimate

Raj Kumar PRIYA; Vinod TEWARİ; Rakesh RANJAN

doi:https://doi.org/10.25288/tjb.731580

Makale detayları

Geochemical and Petrological Studies of Permo-Carboniferous Sandstones from the Rangit Pebble-Slate Formation, Sikkim Lesser Himalaya, India: Implication for Provenance, Tectonic Setting, and Paleoclimate

Yazarlar:

Raj Kumar PRIYA | Vinod TEWARİ | Rakesh RANJAN

Yayıncı:

TMMOB Jeoloji Mühendisleri Odası

Ana Başlıklar:

Jeoloji, hidroloji, meteoroloji

Dergi:

Geological Bulletin of Turkey 2021 Vol.64 Issue 1, pp.129-142

Belge Tipi:

Makale

Yayın Tarihi:

12/2020

Belge Dili:

İngilizce

Document ID (Org No.):

2000710112

Sıklık:

Üç Yıllık

eISSN:

2564-6745

pISSN:

1016-9164

DOI:

https://doi.org/10.25288/tjb.731580

Özet:

 

The Permo-Carboniferous depositional sequence of Lower Gondwana in Sikkim Lesser Himalaya was investigated through an integrated approach of lithological, petrological, and geochemical studies. Lithologically, it is characterized by glacial diamictite at the base and shale-sandstone facies at the top of a sequence which is interpreted as a glaciomarine deposit. Coarser sandstone and massive diamictite composed of quartz, feldspar, muscovite, zircon, and other lithic fragments are observed in thin section. Geochemistry of all studied samples from the Rangit Pebble Slate Formation shows the dominance of silicon dioxide compared to other elemental oxides. The tectonic discrimination diagram positively infers passive margin sedimentation from a felsic-rich provenance. Chemical Index of Alteration was used to depict the weathering trends of all studied samples which reflect paleo-sedimentation under humid to sub-humid climatic conditions.

 

The Permo-Carboniferous depositional sequence of Lower Gondwana in Sikkim Lesser Himalaya was investigated through an integrated approach of lithological, petrological, and geochemical studies. Lithologically, it is characterized by glacial diamictite at the base and shale-sandstone facies at the top of a sequence which is interpreted as a glaciomarine deposit. Coarser sandstone and massive diamictite composed of quartz, feldspar, muscovite, zircon, and other lithic fragments are observed in thin section. Geochemistry of all studied samples from the Rangit Pebble Slate Formation shows the dominance of silicon dioxide compared to other elemental oxides. The tectonic discrimination diagram positively infers passive margin sedimentation from a felsic-rich provenance. Chemical Index of Alteration was used to depict the weathering trends of all studied samples which reflect paleo-sedimentation under humid to sub-humid climatic conditions.

Makale detayları

Geochemical and Petrological Studies of Permo-Carboniferous Sandstones from the Rangit Pebble-Slate Formation, Sikkim Lesser Himalaya, India: Implication for Provenance, Tectonic Setting, and Paleoclimate

Yazarlar: Raj Kumar PRIYA | Vinod TEWARİ | Rakesh RANJAN

Yayıncı: TMMOB Jeoloji Mühendisleri Odası

Ana Başlıklar: Jeoloji, hidroloji, meteoroloji

Dergi: Geological Bulletin of Turkey 2021 Vol.64 Issue 1, pp.129-142

Belge Tipi: Makale

Yayın Tarihi: 12/2020

Belge Dili: İngilizce

Document ID (Org No.): 2000710112

Sıklık: Üç Yıllık

eISSN: 2564-6745

pISSN: 1016-9164

DOI: https://doi.org/10.25288/tjb.731580

Sayı

Yazarlar:

Raj Kumar PRIYA | Vinod TEWARİ | Rakesh RANJAN

Yayıncı:

TMMOB Jeoloji Mühendisleri Odası

Ana Başlıklar:

Jeoloji, hidroloji, meteoroloji

Dergi:

Geological Bulletin of Turkey 2021 Vol.64 Issue 1, pp.129-142

Belge Tipi:

Makale

Yayın Tarihi:

12/2020

Belge Dili:

İngilizce

Document ID (Org No.):

2000710112

Sıklık:

Üç Yıllık

eISSN:

2564-6745

pISSN:

1016-9164

DOI:

https://doi.org/10.25288/tjb.731580